dnl *************************************************** dnl * Please run autoreconf -if to test your changes! * dnl *************************************************** dnl dnl Python's configure script requires autoconf 2.69 and autoconf-archive. dnl # Set VERSION so we only need to edit in one place (i.e., here) m4_define(PYTHON_VERSION, 3.11) AC_PREREQ([2.69]) AC_INIT([python],[PYTHON_VERSION],[https://bugs.python.org/]) m4_ifdef( [AX_C_FLOAT_WORDS_BIGENDIAN], [], [AC_MSG_ERROR([Please install autoconf-archive package and re-run autoreconf])] )dnl m4_ifdef( [PKG_PROG_PKG_CONFIG], [], [AC_MSG_ERROR([Please install pkgconf's m4 macro package and re-run autoreconf])] )dnl AC_SUBST(BASECPPFLAGS) if test "$srcdir" != . -a "$srcdir" != "$(pwd)"; then # If we're building out-of-tree, we need to make sure the following # resources get picked up before their $srcdir counterparts. # Objects/ -> typeslots.inc # Include/ -> Python.h # Python/ -> importlib.h # (A side effect of this is that these resources will automatically be # regenerated when building out-of-tree, regardless of whether or not # the $srcdir counterpart is up-to-date. 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AC_MSG_CHECKING(which MACOSX_DEPLOYMENT_TARGET to use) cur_target_major=`sw_vers -productVersion | \ sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'` cur_target_minor=`sw_vers -productVersion | \ sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'` cur_target="${cur_target_major}.${cur_target_minor}" if test ${cur_target_major} -eq 10 && \ test ${cur_target_minor} -ge 3 && \ test ${cur_target_minor} -le 5 then # OS X 10.3 through 10.5 cur_target=10.3 if test ${enable_universalsdk} then case "$UNIVERSAL_ARCHS" in all|3-way|intel|64-bit) # These configurations were first supported in 10.5 cur_target='10.5' ;; esac else if test `/usr/bin/arch` = "i386" then # 10.4 was the first release to support Intel archs cur_target="10.4" fi fi fi CONFIGURE_MACOSX_DEPLOYMENT_TARGET=${MACOSX_DEPLOYMENT_TARGET-${cur_target}} # Make sure that MACOSX_DEPLOYMENT_TARGET is set in the # environment with a value that is the same as what we'll use # in the Makefile to ensure that we'll get the same compiler # environment during configure and build time. 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AC_CACHE_CHECK([whether pthreads are available without options], [ac_cv_pthread_is_default], [AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include void* routine(void* p){return NULL;} int main(){ pthread_t p; if(pthread_create(&p,NULL,routine,NULL)!=0) return 1; (void)pthread_detach(p); return 0; } ]])],[ ac_cv_pthread_is_default=yes ac_cv_kthread=no ac_cv_pthread=no ],[ac_cv_pthread_is_default=no],[ac_cv_pthread_is_default=no]) ]) if test $ac_cv_pthread_is_default = yes then ac_cv_kpthread=no else # -Kpthread, if available, provides the right #defines # and linker options to make pthread_create available # Some compilers won't report that they do not support -Kpthread, # so we need to run a program to see whether it really made the # function available. 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This tag serves # as a baseline for bdist module packages AC_MSG_CHECKING(for the system builddate) AIX_BUILDDATE=$(lslpp -Lcq bos.mp64 | awk -F: '{ print $NF }') AC_DEFINE_UNQUOTED([AIX_BUILDDATE], [$AIX_BUILDDATE], [BUILD_GNU_TYPE + AIX_BUILDDATE are used to construct the PEP425 tag of the build system.]) AC_MSG_RESULT($AIX_BUILDDATE) ;; *) ;; esac # check for systems that require aligned memory access AC_CACHE_CHECK([aligned memory access is required], [ac_cv_aligned_required], [AC_RUN_IFELSE([AC_LANG_SOURCE([[ int main() { char s[16]; int i, *p1, *p2; for (i=0; i < 16; i++) s[i] = i; p1 = (int*)(s+1); p2 = (int*)(s+2); if (*p1 == *p2) return 1; return 0; }]])], [ac_cv_aligned_required=no], [ac_cv_aligned_required=yes], [ac_cv_aligned_required=yes]) ]) if test "$ac_cv_aligned_required" = yes ; then AC_DEFINE([HAVE_ALIGNED_REQUIRED], [1], [Define if aligned memory access is required]) fi # str, bytes and memoryview hash algorithm AH_TEMPLATE(Py_HASH_ALGORITHM, [Define hash algorithm for str, bytes and memoryview. SipHash24: 1, FNV: 2, SipHash13: 3, externally defined: 0]) AC_MSG_CHECKING(for --with-hash-algorithm) dnl quadrigraphs "@<:@" and "@:>@" produce "[" and "]" in the output AC_ARG_WITH(hash_algorithm, AS_HELP_STRING([--with-hash-algorithm=@<:@fnv|siphash13|siphash24@:>@], [select hash algorithm for use in Python/pyhash.c (default is SipHash13)]), [ AC_MSG_RESULT($withval) case "$withval" in siphash13) AC_DEFINE(Py_HASH_ALGORITHM, 3) ;; siphash24) AC_DEFINE(Py_HASH_ALGORITHM, 1) ;; fnv) AC_DEFINE(Py_HASH_ALGORITHM, 2) ;; *) AC_MSG_ERROR([unknown hash algorithm '$withval']) ;; esac ], [AC_MSG_RESULT(default)]) validate_tzpath() { # Checks that each element of the path is an absolute path if test -z "$1"; then # Empty string is allowed: it indicates no system TZPATH return 0 fi # Bad paths are those that don't start with / dnl quadrigraphs "@<:@" and "@:>@" produce "[" and "]" in the output if ( echo $1 | grep '\(^\|:\)\(@<:@^/@:>@\|$\)' > /dev/null); then AC_MSG_ERROR([--with-tzpath must contain only absolute paths, not $1]) return 1; fi } TZPATH="/usr/share/zoneinfo:/usr/lib/zoneinfo:/usr/share/lib/zoneinfo:/etc/zoneinfo" AC_MSG_CHECKING(for --with-tzpath) AC_ARG_WITH(tzpath, AS_HELP_STRING([--with-tzpath=] [Select the default time zone search path for zoneinfo.TZPATH]), [ case "$withval" in yes) AC_MSG_ERROR([--with-tzpath requires a value]) ;; *) validate_tzpath "$withval" TZPATH="$withval" AC_MSG_RESULT("$withval") ;; esac ], [validate_tzpath "$TZPATH" AC_MSG_RESULT("$TZPATH")]) AC_SUBST(TZPATH) # Most SVR4 platforms (e.g. Solaris) need -lsocket and -lnsl. AC_CHECK_LIB(nsl, t_open, [LIBS="-lnsl $LIBS"]) # SVR4 AC_CHECK_LIB(socket, socket, [LIBS="-lsocket $LIBS"], [], $LIBS) # SVR4 sockets case $ac_sys_system/$ac_sys_release in Haiku*) AC_CHECK_LIB(network, socket, [LIBS="-lnetwork $LIBS"], [], $LIBS) ;; esac AC_MSG_CHECKING(for --with-libs) AC_ARG_WITH(libs, AS_HELP_STRING([--with-libs='lib1 ...'], [link against additional libs (default is no)]), [ AC_MSG_RESULT($withval) LIBS="$withval $LIBS" ], [AC_MSG_RESULT(no)]) # Check for use of the system expat library AC_MSG_CHECKING(for --with-system-expat) AC_ARG_WITH(system_expat, AS_HELP_STRING([--with-system-expat], [build pyexpat module using an installed expat library, see Doc/library/pyexpat.rst (default is no)]), [], [with_system_expat="no"]) AC_MSG_RESULT($with_system_expat) AS_VAR_IF([with_system_expat], [yes], [ LIBEXPAT_CFLAGS="" LIBEXPAT_LDFLAGS="-lexpat" LIBEXPAT_INTERNAL= ], [ LIBEXPAT_CFLAGS="-I\$(srcdir)/Modules/expat" LIBEXPAT_LDFLAGS="-lm \$(LIBEXPAT_A)" LIBEXPAT_INTERNAL="\$(LIBEXPAT_A)" ]) AC_SUBST([LIBEXPAT_CFLAGS]) AC_SUBST([LIBEXPAT_LDFLAGS]) AC_SUBST([LIBEXPAT_INTERNAL]) # Check for use of the system libffi library AC_MSG_CHECKING(for --with-system-ffi) AC_ARG_WITH(system_ffi, AS_HELP_STRING([--with-system-ffi], [build _ctypes module using an installed ffi library, see Doc/library/ctypes.rst (default is system-dependent)]),,,) if test "$ac_sys_system" = "Darwin" then case "$with_system_ffi" in "") with_system_ffi="no" ;; yes|no) ;; *) AC_MSG_ERROR([--with-system-ffi accepts no arguments]) ;; esac AC_MSG_RESULT($with_system_ffi) else AC_MSG_RESULT(yes) if test "$with_system_ffi" != "" then AC_MSG_WARN([--with(out)-system-ffi is ignored on this platform]) fi with_system_ffi="yes" fi if test "$with_system_ffi" = "yes" && test -n "$PKG_CONFIG"; then LIBFFI_INCLUDEDIR="`"$PKG_CONFIG" libffi --cflags-only-I 2>/dev/null | sed -e 's/^-I//;s/ *$//'`" else LIBFFI_INCLUDEDIR="" fi AC_SUBST(LIBFFI_INCLUDEDIR) # Check for use of the system libmpdec library AC_MSG_CHECKING(for --with-system-libmpdec) AC_ARG_WITH(system_libmpdec, AS_HELP_STRING([--with-system-libmpdec], [build _decimal module using an installed libmpdec library, see Doc/library/decimal.rst (default is no)]), [], [with_system_libmpdec="no"]) AC_MSG_RESULT($with_system_libmpdec) AS_VAR_IF([with_system_libmpdec], [yes], [ LIBMPDEC_CFLAGS="" LIBMPDEC_LDFLAGS="-lmpdec" LIBMPDEC_INTERNAL= ], [ LIBMPDEC_CFLAGS="-I\$(srcdir)/Modules/_decimal/libmpdec" LIBMPDEC_LDFLAGS="-lm \$(LIBMPDEC_A)" LIBMPDEC_INTERNAL="\$(LIBMPDEC_A)" ]) AC_SUBST([LIBMPDEC_CFLAGS]) AC_SUBST([LIBMPDEC_LDFLAGS]) AC_SUBST([LIBMPDEC_INTERNAL]) # Check whether _decimal should use a coroutine-local or thread-local context AC_MSG_CHECKING(for --with-decimal-contextvar) AC_ARG_WITH(decimal_contextvar, AS_HELP_STRING([--with-decimal-contextvar], [build _decimal module using a coroutine-local rather than a thread-local context (default is yes)]), [], [with_decimal_contextvar="yes"]) if test "$with_decimal_contextvar" != "no" then AC_DEFINE(WITH_DECIMAL_CONTEXTVAR, 1, [Define if you want build the _decimal module using a coroutine-local rather than a thread-local context]) fi AC_MSG_RESULT($with_decimal_contextvar) # Check for libmpdec machine flavor AC_MSG_CHECKING(for decimal libmpdec machine) AS_CASE([$ac_sys_system], [Darwin*], [libmpdec_system=Darwin], [SunOS*], [libmpdec_system=sunos], [libmpdec_system=other] ) libmpdec_machine=unknown if test "$libmpdec_system" = Darwin; then AS_CASE([$MACOSX_DEFAULT_ARCH], [i386], [libmpdec_machine=ansi32], [ppc], [libmpdec_machine=ansi32], [x86_64], [libmpdec_machine=x64], [ppc64], [libmpdec_machine=ansi64], [arm64], [libmpdec_machine=ansi64], [libmpdec_machine=universal] ) elif test $ac_cv_sizeof_size_t -eq 8; then if test "$ac_cv_gcc_asm_for_x64" = yes; then libmpdec_machine=x64 elif test "$ac_cv_type___uint128_t" = yes; then libmpdec_machine=uint128 else libmpdec_machine=ansi64 fi elif test $ac_cv_sizeof_size_t -eq 4; then if test "$ac_cv_gcc_asm_for_x87" = yes -a "$libmpdec_system" != sunos; then AS_CASE([$CC], [*gcc*], [libmpdec_machine=ppro], [*clang*], [libmpdec_machine=ppro], [libmpdec_machine=ansi32] ) else libmpdec_machine=ansi32 fi fi AC_MSG_RESULT([$libmpdec_machine]) AS_CASE([$libmpdec_machine], [x64], [AS_VAR_APPEND([LIBMPDEC_CFLAGS], [" -DCONFIG_64=1 -DASM=1"])], [uint128], [AS_VAR_APPEND([LIBMPDEC_CFLAGS], [" -DCONFIG_64=1 -DANSI=1 -DHAVE_UINT128_T=1"])], [ansi64], [AS_VAR_APPEND([LIBMPDEC_CFLAGS], [" -DCONFIG_64=1 -DANSI=1"])], [ppro], [AS_VAR_APPEND([LIBMPDEC_CFLAGS], [" -DCONFIG_32=1 -DANSI=1 -DASM=1 -Wno-unknown-pragmas"])], [ansi32], [AS_VAR_APPEND([LIBMPDEC_CFLAGS], [" -DCONFIG_32=1 -DANSI=1"])], [ansi-legacy], [AS_VAR_APPEND([LIBMPDEC_CFLAGS], [" -DCONFIG_32=1 -DANSI=1 -DLEGACY_COMPILER=1"])], [universal], [AS_VAR_APPEND([LIBMPDEC_CFLAGS], [" -DUNIVERSAL=1"])], [AC_MSG_ERROR([_decimal: unsupported architecture])] ) if test "$have_ipa_pure_const_bug" = yes; then # Some versions of gcc miscompile inline asm: # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46491 # https://gcc.gnu.org/ml/gcc/2010-11/msg00366.html AS_VAR_APPEND([LIBMPDEC_CFLAGS], [" -fno-ipa-pure-const"]) fi if test "$have_glibc_memmove_bug" = yes; then # _FORTIFY_SOURCE wrappers for memmove and bcopy are incorrect: # https://sourceware.org/ml/libc-alpha/2010-12/msg00009.html AS_VAR_APPEND([LIBMPDEC_CFLAGS], [" -U_FORTIFY_SOURCE"]) fi dnl Check for SQLite library. Use pkg-config if available. PKG_CHECK_MODULES( [LIBSQLITE3], [sqlite3 >= 3.7.15], [], [ LIBSQLITE3_LIBS="-lsqlite3" LIBSQLITE3_CFLAGS= ] ) AS_VAR_APPEND([LIBSQLITE3_CFLAGS], [' -I$(srcdir)/Modules/_sqlite']) dnl bpo-45774/GH-29507: The CPP check in AC_CHECK_HEADER can fail on FreeBSD, dnl hence CPPFLAGS instead of CFLAGS. We still need to save CFLAGS, because it dnl is touched by AC_CHECK_HEADER. AS_VAR_COPY([save_CFLAGS], [CFLAGS]) AS_VAR_COPY([save_CPPFLAGS], [CPPFLAGS]) AS_VAR_COPY([save_LDFLAGS], [LDFLAGS]) AS_VAR_COPY([save_LIBS], [LIBS]) CPPFLAGS="$LIBSQLITE3_CFLAGS $CFLAGS" LDFLAGS="$LIBSQLITE3_LIBS $LDFLAGS" AC_CHECK_HEADER([sqlite3.h], [ AC_CHECK_LIB([sqlite3], [sqlite3_open_v2], [ have_sqlite3=yes AC_COMPILE_IFELSE([ AC_LANG_PROGRAM([ #include #if SQLITE_VERSION_NUMBER < 3007015 # error "SQLite 3.7.15 or higher required" #endif ], []) ], [have_supported_sqlite3=yes], [have_supported_sqlite3=no]) ], [have_sqlite3=no]) AC_CHECK_LIB([sqlite3], [sqlite3_load_extension]) ]) AS_VAR_COPY([CFLAGS], [save_CFLAGS]) AS_VAR_COPY([CPPFLAGS], [save_CPPFLAGS]) AS_VAR_COPY([LDFLAGS], [save_LDFLAGS]) AS_VAR_COPY([LIBS], [save_LIBS]) # Check for support for loadable sqlite extensions AC_MSG_CHECKING(for --enable-loadable-sqlite-extensions) AC_ARG_ENABLE(loadable-sqlite-extensions, AS_HELP_STRING([--enable-loadable-sqlite-extensions], [support loadable extensions in _sqlite module, see Doc/library/sqlite3.rst (default is no)]), [AS_VAR_IF([have_sqlite3_load_extension], [no], [AC_MSG_WARN([Your version of SQLite does not support loadable extensions])])], [enable_loadable_sqlite_extensions=no]) AC_MSG_RESULT($enable_loadable_sqlite_extensions) AS_VAR_IF([enable_loadable_sqlite_extensions], [yes], [ AC_DEFINE(PY_SQLITE_ENABLE_LOAD_EXTENSION, 1, [Define to 1 to build the sqlite module with loadable extensions support.]) ]) # Check for --with-tcltk-includes=path and --with-tcltk-libs=path AC_SUBST(TCLTK_INCLUDES) AC_SUBST(TCLTK_LIBS) AC_MSG_CHECKING(for --with-tcltk-includes) AC_ARG_WITH(tcltk-includes, AS_HELP_STRING([--with-tcltk-includes='-I...'], [override search for Tcl and Tk include files]), [], [with_tcltk_includes="default"]) AC_MSG_RESULT($with_tcltk_includes) AC_MSG_CHECKING(for --with-tcltk-libs) AC_ARG_WITH(tcltk-libs, AS_HELP_STRING([--with-tcltk-libs='-L...'], [override search for Tcl and Tk libs]), [], [with_tcltk_libs="default"]) AC_MSG_RESULT($with_tcltk_libs) if test "x$with_tcltk_includes" = xdefault || test "x$with_tcltk_libs" = xdefault then if test "x$with_tcltk_includes" != "x$with_tcltk_libs" then AC_MSG_ERROR([use both --with-tcltk-includes='...' and --with-tcltk-libs='...' or neither]) fi if test -n "$PKG_CONFIG" && "$PKG_CONFIG" --exists tcl tk; then TCLTK_INCLUDES="`"$PKG_CONFIG" tcl tk --cflags-only-I 2>/dev/null`" TCLTK_LIBS="`"$PKG_CONFIG" tcl tk --libs 2>/dev/null`" else TCLTK_INCLUDES="" TCLTK_LIBS="" fi else TCLTK_INCLUDES="$with_tcltk_includes" TCLTK_LIBS="$with_tcltk_libs" fi # check for _gdbmmodulec dependencies AC_CHECK_HEADERS([gdbm.h], [ LIBS_SAVE=$LIBS AC_CHECK_LIB([gdbm], [gdbm_open]) LIBS=$LIBS_SAVE ]) # check for _dbmmodule.c dependencies AC_CHECK_HEADERS([ndbm.h], [ LIBS_SAVE="$LIBS" AC_CHECK_LIB([ndbm], [dbm_open]) LIBS="$LIBS_SAVE" AC_CHECK_LIB([gdbm_compat], [dbm_open]) LIBS="$LIBS_SAVE" ]) # "gdbm-ndbm.h" and "gdbm/ndbm.h" are both normalized to "gdbm_ndbm_h" # unset ac_cv_header_gdbm_ndbm_h to prevent false positive cache hits. AS_UNSET([ac_cv_header_gdbm_ndbm_h]) AC_CACHE_VAL([ac_cv_header_gdbm_slash_ndbm_h], [ AC_CHECK_HEADER( [gdbm/ndbm.h], [ac_cv_header_gdbm_slash_ndbm_h=yes], [ac_cv_header_gdbm_slash_ndbm_h=no] ) ]) AS_VAR_IF([ac_cv_header_gdbm_slash_ndbm_h], [yes], [ AC_DEFINE([HAVE_GDBM_NDBM_H], [1], [Define to 1 if you have the header file.]) ]) AS_UNSET([ac_cv_header_gdbm_ndbm_h]) AC_CACHE_VAL([ac_cv_header_gdbm_dash_ndbm_h], [ AC_CHECK_HEADER( [gdbm-ndbm.h], [ac_cv_header_gdbm_dash_ndbm_h=yes], [ac_cv_header_gdbm_dash_ndbm_h=no] ) ]) AS_VAR_IF([ac_cv_header_gdbm_dash_ndbm_h], [yes], [ AC_DEFINE([HAVE_GDBM_DASH_NDBM_H], [1], [Define to 1 if you have the header file.]) ]) AS_UNSET([ac_cv_header_gdbm_ndbm_h]) if test "$ac_cv_header_gdbm_slash_ndbm_h" = yes -o "$ac_cv_header_gdbm_dash_ndbm_h" = yes; then LIBS_SAVE="$LIBS" AC_CHECK_LIB([gdbm_compat], [dbm_open]) LIBS="$LIBS_SAVE" fi # Check for libdb >= 5 with dbm_open() # db.h re-defines the name of the function AC_CHECK_HEADERS([db.h], [ AC_CACHE_CHECK([for libdb], [ac_cv_have_libdb], [ LIBS_SAVE="$LIBS" LIBS="$LIBS -ldb" AC_LINK_IFELSE([AC_LANG_PROGRAM([ #define DB_DBM_HSEARCH 1 #include #if DB_VERSION_MAJOR < 5 #error "dh.h: DB_VERSION_MAJOR < 5 is not supported." #endif ], [DBM *dbm = dbm_open(NULL, 0, 0)]) ], [ac_cv_have_libdb=yes], [ac_cv_have_libdb=no]) LIBS="$LIBS_SAVE" ]) AS_VAR_IF([ac_cv_have_libdb], [yes], [ AC_DEFINE([HAVE_LIBDB], [1], [Define to 1 if you have the `db' library (-ldb).]) ]) ]) # Check for --with-dbmliborder AC_MSG_CHECKING(for --with-dbmliborder) AC_ARG_WITH(dbmliborder, AS_HELP_STRING([--with-dbmliborder=db1:db2:...], [override order to check db backends for dbm; a valid value is a colon separated string with the backend names `ndbm', `gdbm' and `bdb'.]), [ if test x$with_dbmliborder = xyes then AC_MSG_ERROR([proper usage is --with-dbmliborder=db1:db2:...]) else as_save_IFS=$IFS IFS=: for db in $with_dbmliborder; do if test x$db != xndbm && test x$db != xgdbm && test x$db != xbdb then AC_MSG_ERROR([proper usage is --with-dbmliborder=db1:db2:...]) fi done IFS=$as_save_IFS fi]) AC_MSG_RESULT($with_dbmliborder) # Templates for things AC_DEFINEd more than once. # For a single AC_DEFINE, no template is needed. AH_TEMPLATE(_REENTRANT, [Define to force use of thread-safe errno, h_errno, and other functions]) if test "$ac_cv_pthread_is_default" = yes then # Defining _REENTRANT on system with POSIX threads should not hurt. AC_DEFINE(_REENTRANT) posix_threads=yes if test "$ac_sys_system" = "SunOS"; then CFLAGS="$CFLAGS -D_REENTRANT" fi elif test "$ac_cv_kpthread" = "yes" then CC="$CC -Kpthread" if test "$ac_cv_cxx_thread" = "yes"; then CXX="$CXX -Kpthread" fi posix_threads=yes elif test "$ac_cv_kthread" = "yes" then CC="$CC -Kthread" if test "$ac_cv_cxx_thread" = "yes"; then CXX="$CXX -Kthread" fi posix_threads=yes elif test "$ac_cv_pthread" = "yes" then CC="$CC -pthread" if test "$ac_cv_cxx_thread" = "yes"; then CXX="$CXX -pthread" fi posix_threads=yes else if test ! -z "$withval" -a -d "$withval" then LDFLAGS="$LDFLAGS -L$withval" fi # According to the POSIX spec, a pthreads implementation must # define _POSIX_THREADS in unistd.h. Some apparently don't # (e.g. gnu pth with pthread emulation) AC_MSG_CHECKING(for _POSIX_THREADS in unistd.h) AC_EGREP_CPP(yes, [ #include #ifdef _POSIX_THREADS yes #endif ], unistd_defines_pthreads=yes, unistd_defines_pthreads=no) AC_MSG_RESULT($unistd_defines_pthreads) AC_DEFINE(_REENTRANT) # Just looking for pthread_create in libpthread is not enough: # on HP/UX, pthread.h renames pthread_create to a different symbol name. # So we really have to include pthread.h, and then link. _libs=$LIBS LIBS="$LIBS -lpthread" AC_MSG_CHECKING([for pthread_create in -lpthread]) AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include #include void * start_routine (void *arg) { exit (0); }]], [[ pthread_create (NULL, NULL, start_routine, NULL)]])],[ AC_MSG_RESULT(yes) posix_threads=yes ],[ LIBS=$_libs AC_CHECK_FUNC(pthread_detach, [ posix_threads=yes ],[ AC_CHECK_LIB(pthreads, pthread_create, [ posix_threads=yes LIBS="$LIBS -lpthreads" ], [ AC_CHECK_LIB(c_r, pthread_create, [ posix_threads=yes LIBS="$LIBS -lc_r" ], [ AC_CHECK_LIB(pthread, __pthread_create_system, [ posix_threads=yes LIBS="$LIBS -lpthread" ], [ AC_CHECK_LIB(cma, pthread_create, [ posix_threads=yes LIBS="$LIBS -lcma" ],[ AC_MSG_ERROR([could not find pthreads on your system]) ]) ])])])])]) AC_CHECK_LIB(mpc, usconfig, [ LIBS="$LIBS -lmpc" ]) fi if test "$posix_threads" = "yes"; then if test "$unistd_defines_pthreads" = "no"; then AC_DEFINE(_POSIX_THREADS, 1, [Define if you have POSIX threads, and your system does not define that.]) fi # Bug 662787: Using semaphores causes unexplicable hangs on Solaris 8. case $ac_sys_system/$ac_sys_release in SunOS/5.6) AC_DEFINE(HAVE_PTHREAD_DESTRUCTOR, 1, [Defined for Solaris 2.6 bug in pthread header.]) ;; SunOS/5.8) AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1, [Define if the Posix semaphores do not work on your system]) ;; AIX/*) AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1, [Define if the Posix semaphores do not work on your system]) ;; esac AC_CACHE_CHECK([if PTHREAD_SCOPE_SYSTEM is supported], [ac_cv_pthread_system_supported], [AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include void *foo(void *parm) { return NULL; } main() { pthread_attr_t attr; pthread_t id; if (pthread_attr_init(&attr)) return (-1); if (pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM)) return (-1); if (pthread_create(&id, &attr, foo, NULL)) return (-1); return (0); }]])], [ac_cv_pthread_system_supported=yes], [ac_cv_pthread_system_supported=no], [ac_cv_pthread_system_supported=no]) ]) if test "$ac_cv_pthread_system_supported" = "yes"; then AC_DEFINE(PTHREAD_SYSTEM_SCHED_SUPPORTED, 1, [Defined if PTHREAD_SCOPE_SYSTEM supported.]) fi AC_CHECK_FUNCS(pthread_sigmask, [case $ac_sys_system in CYGWIN*) AC_DEFINE(HAVE_BROKEN_PTHREAD_SIGMASK, 1, [Define if pthread_sigmask() does not work on your system.]) ;; esac]) AC_CHECK_FUNCS(pthread_getcpuclockid) fi # Check for enable-ipv6 AH_TEMPLATE(ENABLE_IPV6, [Define if --enable-ipv6 is specified]) AC_MSG_CHECKING([if --enable-ipv6 is specified]) AC_ARG_ENABLE(ipv6, AS_HELP_STRING([--enable-ipv6], [enable ipv6 (with ipv4) support, see Doc/library/socket.rst (default is yes if supported)]), [ case "$enableval" in no) AC_MSG_RESULT(no) ipv6=no ;; *) AC_MSG_RESULT(yes) AC_DEFINE(ENABLE_IPV6) ipv6=yes ;; esac ], [ dnl the check does not work on cross compilation case... AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ /* AF_INET6 available check */ #include #include ]], [[int domain = AF_INET6;]])],[ AC_MSG_RESULT(yes) ipv6=yes ],[ AC_MSG_RESULT(no) ipv6=no ]) if test "$ipv6" = "yes"; then AC_MSG_CHECKING(if RFC2553 API is available) AC_COMPILE_IFELSE([ AC_LANG_PROGRAM([[#include #include ]], [[struct sockaddr_in6 x; x.sin6_scope_id;]]) ],[ AC_MSG_RESULT(yes) ipv6=yes ],[ AC_MSG_RESULT(no, IPv6 disabled) ipv6=no ]) fi if test "$ipv6" = "yes"; then AC_DEFINE(ENABLE_IPV6) fi ]) ipv6type=unknown ipv6lib=none ipv6trylibc=no if test "$ipv6" = "yes"; then AC_MSG_CHECKING([ipv6 stack type]) for i in inria kame linux-glibc linux-inet6 solaris toshiba v6d zeta; do case $i in inria) dnl http://www.kame.net/ AC_EGREP_CPP(yes, [ #include #ifdef IPV6_INRIA_VERSION yes #endif], [ipv6type=$i]) ;; kame) dnl http://www.kame.net/ AC_EGREP_CPP(yes, [ #include #ifdef __KAME__ yes #endif], [ipv6type=$i; ipv6lib=inet6 ipv6libdir=/usr/local/v6/lib ipv6trylibc=yes]) ;; linux-glibc) dnl http://www.v6.linux.or.jp/ AC_EGREP_CPP(yes, [ #include #if defined(__GLIBC__) && ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)) yes #endif], [ipv6type=$i; ipv6trylibc=yes]) ;; linux-inet6) dnl http://www.v6.linux.or.jp/ if test -d /usr/inet6; then ipv6type=$i ipv6lib=inet6 ipv6libdir=/usr/inet6/lib BASECFLAGS="-I/usr/inet6/include $BASECFLAGS" fi ;; solaris) if test -f /etc/netconfig; then if $GREP -q tcp6 /etc/netconfig; then ipv6type=$i ipv6trylibc=yes fi fi ;; toshiba) AC_EGREP_CPP(yes, [ #include #ifdef _TOSHIBA_INET6 yes #endif], [ipv6type=$i; ipv6lib=inet6; ipv6libdir=/usr/local/v6/lib]) ;; v6d) AC_EGREP_CPP(yes, [ #include #ifdef __V6D__ yes #endif], [ipv6type=$i; ipv6lib=v6; ipv6libdir=/usr/local/v6/lib; BASECFLAGS="-I/usr/local/v6/include $BASECFLAGS"]) ;; zeta) AC_EGREP_CPP(yes, [ #include #ifdef _ZETA_MINAMI_INET6 yes #endif], [ipv6type=$i; ipv6lib=inet6; ipv6libdir=/usr/local/v6/lib]) ;; esac if test "$ipv6type" != "unknown"; then break fi done AC_MSG_RESULT($ipv6type) fi if test "$ipv6" = "yes" -a "$ipv6lib" != "none"; then if test -d $ipv6libdir -a -f $ipv6libdir/lib$ipv6lib.a; then LIBS="-L$ipv6libdir -l$ipv6lib $LIBS" echo "using lib$ipv6lib" else if test $ipv6trylibc = "yes"; then echo "using libc" else echo 'Fatal: no $ipv6lib library found. cannot continue.' echo "You need to fetch lib$ipv6lib.a from appropriate" echo 'ipv6 kit and compile beforehand.' exit 1 fi fi fi AC_CACHE_CHECK([CAN_RAW_FD_FRAMES], [ac_cv_can_raw_fd_frames], [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ /* CAN_RAW_FD_FRAMES available check */ #include ]], [[int can_raw_fd_frames = CAN_RAW_FD_FRAMES;]])], [ac_cv_can_raw_fd_frames=yes], [ac_cv_can_raw_fd_frames=no]) ]) AS_VAR_IF([ac_cv_can_raw_fd_frames], [yes], [ AC_DEFINE(HAVE_LINUX_CAN_RAW_FD_FRAMES, 1, [Define if compiling using Linux 3.6 or later.]) ]) AC_CACHE_CHECK([for CAN_RAW_JOIN_FILTERS], [ac_cv_can_raw_join_filters], [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include ]], [[int can_raw_join_filters = CAN_RAW_JOIN_FILTERS;]])], [ac_cv_can_raw_join_filters=yes], [ac_cv_can_raw_join_filters=no]) ]) AS_VAR_IF([ac_cv_can_raw_join_filters], [yes], [ AC_DEFINE(HAVE_LINUX_CAN_RAW_JOIN_FILTERS, 1, [Define if compiling using Linux 4.1 or later.]) ]) # Check for --with-doc-strings AC_MSG_CHECKING(for --with-doc-strings) AC_ARG_WITH(doc-strings, AS_HELP_STRING([--with-doc-strings], [enable documentation strings (default is yes)])) if test -z "$with_doc_strings" then with_doc_strings="yes" fi if test "$with_doc_strings" != "no" then AC_DEFINE(WITH_DOC_STRINGS, 1, [Define if you want documentation strings in extension modules]) fi AC_MSG_RESULT($with_doc_strings) # Check for Python-specific malloc support AC_MSG_CHECKING(for --with-pymalloc) AC_ARG_WITH(pymalloc, AS_HELP_STRING([--with-pymalloc], [enable specialized mallocs (default is yes)])) if test -z "$with_pymalloc" then with_pymalloc="yes" fi if test "$with_pymalloc" != "no" then AC_DEFINE(WITH_PYMALLOC, 1, [Define if you want to compile in Python-specific mallocs]) fi AC_MSG_RESULT($with_pymalloc) # Check whether objects such as float, tuple and dict are using # freelists to optimization memory allocation. AC_MSG_CHECKING(for --with-freelists) AC_ARG_WITH(freelists, AS_HELP_STRING([--with-freelists], [enable object freelists (default is yes)])) if test -z "$with_freelists" then with_freelists="yes" fi if test "$with_freelists" != "no" then AC_DEFINE(WITH_FREELISTS, 1, [Define if you want to compile in object freelists optimization]) fi AC_MSG_RESULT($with_freelists) # Check for --with-c-locale-coercion AC_MSG_CHECKING(for --with-c-locale-coercion) AC_ARG_WITH(c-locale-coercion, AS_HELP_STRING([--with-c-locale-coercion], [enable C locale coercion to a UTF-8 based locale (default is yes)])) if test -z "$with_c_locale_coercion" then with_c_locale_coercion="yes" fi if test "$with_c_locale_coercion" != "no" then AC_DEFINE(PY_COERCE_C_LOCALE, 1, [Define if you want to coerce the C locale to a UTF-8 based locale]) fi AC_MSG_RESULT($with_c_locale_coercion) # Check for Valgrind support AC_MSG_CHECKING([for --with-valgrind]) AC_ARG_WITH([valgrind], AS_HELP_STRING([--with-valgrind], [enable Valgrind support (default is no)]),, with_valgrind=no) AC_MSG_RESULT([$with_valgrind]) if test "$with_valgrind" != no; then AC_CHECK_HEADER([valgrind/valgrind.h], [AC_DEFINE([WITH_VALGRIND], 1, [Define if you want pymalloc to be disabled when running under valgrind])], [AC_MSG_ERROR([Valgrind support requested but headers not available])] ) OPT="-DDYNAMIC_ANNOTATIONS_ENABLED=1 $OPT" fi # Check for DTrace support AC_MSG_CHECKING(for --with-dtrace) AC_ARG_WITH(dtrace, AS_HELP_STRING([--with-dtrace],[enable DTrace support (default is no)]),, with_dtrace=no) AC_MSG_RESULT($with_dtrace) AC_SUBST(DTRACE) AC_SUBST(DFLAGS) AC_SUBST(DTRACE_HEADERS) AC_SUBST(DTRACE_OBJS) DTRACE= DTRACE_HEADERS= DTRACE_OBJS= if test "$with_dtrace" = "yes" then AC_PATH_PROG(DTRACE, [dtrace], [not found]) if test "$DTRACE" = "not found"; then AC_MSG_ERROR([dtrace command not found on \$PATH]) fi AC_DEFINE(WITH_DTRACE, 1, [Define if you want to compile in DTrace support]) DTRACE_HEADERS="Include/pydtrace_probes.h" # On OS X, DTrace providers do not need to be explicitly compiled and # linked into the binary. Correspondingly, dtrace(1) is missing the ELF # generation flag '-G'. We check for presence of this flag, rather than # hardcoding support by OS, in the interest of robustness. AC_CACHE_CHECK([whether DTrace probes require linking], [ac_cv_dtrace_link], [dnl ac_cv_dtrace_link=no echo 'BEGIN{}' > conftest.d "$DTRACE" $DFLAGS -G -s conftest.d -o conftest.o > /dev/null 2>&1 && \ ac_cv_dtrace_link=yes ]) if test "$ac_cv_dtrace_link" = "yes"; then DTRACE_OBJS="Python/pydtrace.o" fi fi # -I${DLINCLDIR} is added to the compile rule for importdl.o AC_SUBST(DLINCLDIR) DLINCLDIR=. # the dlopen() function means we might want to use dynload_shlib.o. some # platforms have dlopen(), but don't want to use it. AC_CHECK_FUNCS(dlopen) # DYNLOADFILE specifies which dynload_*.o file we will use for dynamic # loading of modules. AC_SUBST(DYNLOADFILE) AC_MSG_CHECKING(DYNLOADFILE) if test -z "$DYNLOADFILE" then case $ac_sys_system/$ac_sys_release in hp*|HP*) DYNLOADFILE="dynload_hpux.o";; *) # use dynload_shlib.c and dlopen() if we have it; otherwise stub # out any dynamic loading if test "$ac_cv_func_dlopen" = yes then DYNLOADFILE="dynload_shlib.o" else DYNLOADFILE="dynload_stub.o" fi ;; esac fi AC_MSG_RESULT($DYNLOADFILE) if test "$DYNLOADFILE" != "dynload_stub.o" then AC_DEFINE(HAVE_DYNAMIC_LOADING, 1, [Defined when any dynamic module loading is enabled.]) fi # MACHDEP_OBJS can be set to platform-specific object files needed by Python AC_SUBST(MACHDEP_OBJS) AC_MSG_CHECKING(MACHDEP_OBJS) if test -z "$MACHDEP_OBJS" then MACHDEP_OBJS=$extra_machdep_objs else MACHDEP_OBJS="$MACHDEP_OBJS $extra_machdep_objs" fi if test -z "$MACHDEP_OBJS"; then AC_MSG_RESULT([none]) else AC_MSG_RESULT([$MACHDEP_OBJS]) fi # checks for library functions AC_CHECK_FUNCS(alarm accept4 setitimer getitimer bind_textdomain_codeset chown \ clock confstr close_range copy_file_range ctermid dup3 execv explicit_bzero \ explicit_memset faccessat fchmod fchmodat fchown fchownat \ fdwalk fexecve fdopendir fork fpathconf fstatat ftime ftruncate futimesat \ futimens futimes gai_strerror getentropy \ getgrgid_r getgrnam_r \ getgrouplist getgroups getlogin getloadavg getpeername getpgid getpid \ getpriority getresuid getresgid getpwent getpwnam_r getpwuid_r getspnam getspent getsid getwd \ if_nameindex \ initgroups kill killpg lchown lockf linkat lstat lutimes mmap \ memrchr mbrtowc mkdirat mkfifo \ madvise mkfifoat mknod mknodat mktime mremap nice openat pathconf pause pipe2 plock poll \ posix_fallocate posix_fadvise posix_spawn posix_spawnp pread preadv preadv2 \ pthread_condattr_setclock pthread_init pthread_kill pwrite pwritev pwritev2 \ readlink readlinkat readv realpath renameat \ sem_open sem_timedwait sem_clockwait sem_getvalue sem_unlink sendfile setegid seteuid \ setgid sethostname \ setlocale setregid setreuid setresuid setresgid setsid setpgid setpgrp setpriority setuid setvbuf \ sched_get_priority_max sched_setaffinity sched_setscheduler sched_setparam \ sched_rr_get_interval \ sigaction sigaltstack sigfillset siginterrupt sigpending sigrelse \ sigtimedwait sigwait sigwaitinfo snprintf splice strftime strlcpy strsignal symlinkat sync \ sysconf tcgetpgrp tcsetpgrp tempnam timegm times tmpfile tmpnam tmpnam_r \ truncate uname unlinkat utimensat utimes vfork waitid waitpid wait3 wait4 \ wcscoll wcsftime wcsxfrm wmemcmp writev _getpty rtpSpawn) # Force lchmod off for Linux. Linux disallows changing the mode of symbolic # links. Some libc implementations have a stub lchmod implementation that always # returns an error. if test "$MACHDEP" != linux; then AC_CHECK_FUNCS(lchmod) fi AC_CHECK_DECL(dirfd, AC_DEFINE(HAVE_DIRFD, 1, Define if you have the 'dirfd' function or macro.), , [#include #include ]) dnl PY_CHECK_FUNC(FUNCTION, [INCLUDES], [AC_DEFINE-VAR]) AC_DEFUN([PY_CHECK_FUNC], [ AS_VAR_PUSHDEF([py_var], [ac_cv_func_$1]) AS_VAR_PUSHDEF([py_define], m4_ifblank([$3], [[HAVE_]m4_toupper($1)], [$3])) AC_CACHE_CHECK( [for $1], [py_var], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([$2], [void *x=$1])], [AS_VAR_SET([py_var], [yes])], [AS_VAR_SET([py_var], [no])])] ) AS_VAR_IF( [py_var], [yes], [AC_DEFINE([py_define], [1], [Define if you have the '$1' function.])]) AS_VAR_POPDEF([py_var]) AS_VAR_POPDEF([py_define]) ]) # For some functions, having a definition is not sufficient, since # we want to take their address. PY_CHECK_FUNC([chroot], [#include ]) PY_CHECK_FUNC([link], [#include ]) PY_CHECK_FUNC([symlink], [#include ]) PY_CHECK_FUNC([fchdir], [#include ]) PY_CHECK_FUNC([fsync], [#include ]) PY_CHECK_FUNC([fdatasync], [#include ]) PY_CHECK_FUNC([epoll], [#include ]) PY_CHECK_FUNC([epoll_create1], [#include ]) PY_CHECK_FUNC([kqueue],[ #include #include ]) PY_CHECK_FUNC([prlimit], [ #include #include ]) PY_CHECK_FUNC([_dyld_shared_cache_contains_path], [#include ], [HAVE_DYLD_SHARED_CACHE_CONTAINS_PATH]) PY_CHECK_FUNC([memfd_create], [ #ifdef HAVE_SYS_MMAN_H #include #endif #ifdef HAVE_SYS_MEMFD_H #include #endif ]) PY_CHECK_FUNC([eventfd], [ #ifdef HAVE_SYS_EVENTFD_H #include #endif ]) # On some systems (eg. FreeBSD 5), we would find a definition of the # functions ctermid_r, setgroups in the library, but no prototype # (e.g. because we use _XOPEN_SOURCE). See whether we can take their # address to avoid compiler warnings and potential miscompilations # because of the missing prototypes. PY_CHECK_FUNC([ctermid_r], [#include ]) AC_CACHE_CHECK([for flock declaration], [ac_cv_flock_decl], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [#include ], [void* p = flock] )], [ac_cv_flock_decl=yes], [ac_cv_flock_decl=no] ) ]) if test "x${ac_cv_flock_decl}" = xyes; then AC_CHECK_FUNCS(flock,, AC_CHECK_LIB(bsd,flock, [AC_DEFINE(HAVE_FLOCK) AC_DEFINE(FLOCK_NEEDS_LIBBSD, 1, Define if flock needs to be linked with bsd library.) ]) ) fi PY_CHECK_FUNC([getpagesize], [#include ]) AC_CACHE_CHECK([for broken unsetenv], [ac_cv_broken_unsetenv], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [#include ], [int res = unsetenv("DUMMY")])], [ac_cv_broken_unsetenv=no], [ac_cv_broken_unsetenv=yes] ) ]) AS_VAR_IF([ac_cv_broken_unsetenv], [yes], [ AC_DEFINE(HAVE_BROKEN_UNSETENV, 1, [Define if 'unsetenv' does not return an int.]) ]) dnl check for true AC_CHECK_PROGS(TRUE, true, /bin/true) dnl On some systems (e.g. Solaris 9), hstrerror and inet_aton are in -lresolv dnl On others, they are in the C library, so we to take no action AC_CHECK_LIB(c, inet_aton, [$ac_cv_prog_TRUE], AC_CHECK_LIB(resolv, inet_aton) ) # On Tru64, chflags seems to be present, but calling it will # exit Python AC_CACHE_CHECK([for chflags], [ac_cv_have_chflags], [dnl AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include int main(int argc, char*argv[]) { if(chflags(argv[0], 0) != 0) return 1; return 0; } ]])], [ac_cv_have_chflags=yes], [ac_cv_have_chflags=no], [ac_cv_have_chflags=cross]) ]) if test "$ac_cv_have_chflags" = cross ; then AC_CHECK_FUNC([chflags], [ac_cv_have_chflags="yes"], [ac_cv_have_chflags="no"]) fi if test "$ac_cv_have_chflags" = yes ; then AC_DEFINE(HAVE_CHFLAGS, 1, [Define to 1 if you have the 'chflags' function.]) fi AC_CACHE_CHECK([for lchflags], [ac_cv_have_lchflags], [dnl AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include int main(int argc, char*argv[]) { if(lchflags(argv[0], 0) != 0) return 1; return 0; } ]])],[ac_cv_have_lchflags=yes],[ac_cv_have_lchflags=no],[ac_cv_have_lchflags=cross]) ]) if test "$ac_cv_have_lchflags" = cross ; then AC_CHECK_FUNC([lchflags], [ac_cv_have_lchflags="yes"], [ac_cv_have_lchflags="no"]) fi if test "$ac_cv_have_lchflags" = yes ; then AC_DEFINE(HAVE_LCHFLAGS, 1, [Define to 1 if you have the 'lchflags' function.]) fi dnl Check for compression libraries AC_CHECK_HEADERS([zlib.h], [ save_LIBS="$LIBS" AC_CHECK_LIB([z], [gzread]) LIBS="$save_LIBS" AC_CHECK_LIB([z], [inflateCopy], [AC_DEFINE(HAVE_ZLIB_COPY, 1, [Define if the zlib library has inflateCopy])]) LIBS="$save_LIBS" ]) AC_CHECK_HEADERS([bzlib.h], [ save_LIBS="$LIBS" AC_CHECK_LIB([bz2], [BZ2_bzCompress]) LIBS="$save_LIBS" ]) AC_CHECK_HEADERS([lzma.h], [ save_LIBS="$LIBS" AC_CHECK_LIB([lzma], [lzma_easy_encoder]) LIBS="$save_LIBS" ]) PY_CHECK_FUNC([hstrerror], [#include ]) PY_CHECK_FUNC([inet_aton], [ #include #include #include #include ]) PY_CHECK_FUNC([inet_pton], [ #include #include #include #include ]) # On some systems, setgroups is in unistd.h, on others, in grp.h PY_CHECK_FUNC([setgroups], [ #include #ifdef HAVE_GRP_H #include #endif ]) # check for openpty and forkpty AC_CHECK_FUNCS(openpty,, AC_CHECK_LIB(util,openpty, [AC_DEFINE(HAVE_OPENPTY) LIBS="$LIBS -lutil"], AC_CHECK_LIB(bsd,openpty, [AC_DEFINE(HAVE_OPENPTY) LIBS="$LIBS -lbsd"]) ) ) AC_CHECK_FUNCS(forkpty,, AC_CHECK_LIB(util,forkpty, [AC_DEFINE(HAVE_FORKPTY) LIBS="$LIBS -lutil"], AC_CHECK_LIB(bsd,forkpty, [AC_DEFINE(HAVE_FORKPTY) LIBS="$LIBS -lbsd"]) ) ) # check for long file support functions AC_CHECK_FUNCS(fseek64 fseeko fstatvfs ftell64 ftello statvfs) AC_REPLACE_FUNCS(dup2) AC_CHECK_FUNCS(getpgrp, AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[getpgrp(0);]])], [AC_DEFINE(GETPGRP_HAVE_ARG, 1, [Define if getpgrp() must be called as getpgrp(0).])], []) ) AC_CHECK_FUNCS(setpgrp, AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[setpgrp(0,0);]])], [AC_DEFINE(SETPGRP_HAVE_ARG, 1, [Define if setpgrp() must be called as setpgrp(0, 0).])], []) ) # We search for both crypt and crypt_r as one or the other may be defined # This gets us our -lcrypt in LIBS when required on the target platform. # Save/restore LIBS to avoid linking libpython with libcrypt. LIBS_SAVE=$LIBS AC_SEARCH_LIBS(crypt_r, crypt) LIBS="$LIBS_SAVE" AC_SEARCH_LIBS(crypt, crypt) AC_CHECK_FUNC(crypt_r, AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include ]], [[ struct crypt_data d; char *r = crypt_r("", "", &d); ]])], [AC_DEFINE(HAVE_CRYPT_R, 1, [Define if you have the crypt_r() function.])], []) ) LIBS=$LIBS_SAVE AC_CHECK_FUNCS(clock_gettime, [], [ AC_CHECK_LIB(rt, clock_gettime, [ LIBS="$LIBS -lrt" AC_DEFINE(HAVE_CLOCK_GETTIME, 1) AC_DEFINE(TIMEMODULE_LIB, [rt], [Library needed by timemodule.c: librt may be needed for clock_gettime()]) ]) ]) AC_CHECK_FUNCS(clock_getres, [], [ AC_CHECK_LIB(rt, clock_getres, [ AC_DEFINE(HAVE_CLOCK_GETRES, 1) ]) ]) AC_CHECK_FUNCS(clock_settime, [], [ AC_CHECK_LIB(rt, clock_settime, [ AC_DEFINE(HAVE_CLOCK_SETTIME, 1) ]) ]) AC_CHECK_FUNCS(clock_nanosleep, [], [ AC_CHECK_LIB(rt, clock_nanosleep, [ AC_DEFINE(HAVE_CLOCK_NANOSLEEP, 1) ]) ]) AC_CHECK_FUNCS(nanosleep, [], [ AC_CHECK_LIB(rt, nanosleep, [ AC_DEFINE(HAVE_NANOSLEEP, 1) ]) ]) AC_CACHE_CHECK([for major, minor, and makedev], [ac_cv_device_macros], [ AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #if defined(MAJOR_IN_MKDEV) #include #elif defined(MAJOR_IN_SYSMACROS) #include #else #include #endif ]], [[ makedev(major(0),minor(0)); ]])],[ac_cv_device_macros=yes], [ac_cv_device_macros=no]) ]) AS_VAR_IF([ac_cv_device_macros], [yes], [ AC_DEFINE(HAVE_DEVICE_MACROS, 1, [Define to 1 if you have the device macros.]) ]) dnl no longer used, now always defined for backwards compatibility AC_DEFINE(SYS_SELECT_WITH_SYS_TIME, 1, [Define if you can safely include both and (which you can't on SCO ODT 3.0).]) # On OSF/1 V5.1, getaddrinfo is available, but a define # for [no]getaddrinfo in netdb.h. AC_CACHE_CHECK([for getaddrinfo], [ac_cv_func_getaddrinfo], [ AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include #include #include #include ]], [[getaddrinfo(NULL, NULL, NULL, NULL);]])], [ac_cv_func_getaddrinfo=yes], [ac_cv_func_getaddrinfo=no]) ]) AS_VAR_IF([ac_cv_func_getaddrinfo], [yes], [ AC_CACHE_CHECK([getaddrinfo bug], [ac_cv_buggy_getaddrinfo], AC_RUN_IFELSE([AC_LANG_SOURCE([[[ #include #include #include #include #include #include int main() { int passive, gaierr, inet4 = 0, inet6 = 0; struct addrinfo hints, *ai, *aitop; char straddr[INET6_ADDRSTRLEN], strport[16]; for (passive = 0; passive <= 1; passive++) { memset(&hints, 0, sizeof(hints)); hints.ai_family = AF_UNSPEC; hints.ai_flags = passive ? AI_PASSIVE : 0; hints.ai_socktype = SOCK_STREAM; hints.ai_protocol = IPPROTO_TCP; if ((gaierr = getaddrinfo(NULL, "54321", &hints, &aitop)) != 0) { (void)gai_strerror(gaierr); goto bad; } for (ai = aitop; ai; ai = ai->ai_next) { if (ai->ai_addr == NULL || ai->ai_addrlen == 0 || getnameinfo(ai->ai_addr, ai->ai_addrlen, straddr, sizeof(straddr), strport, sizeof(strport), NI_NUMERICHOST|NI_NUMERICSERV) != 0) { goto bad; } switch (ai->ai_family) { case AF_INET: if (strcmp(strport, "54321") != 0) { goto bad; } if (passive) { if (strcmp(straddr, "0.0.0.0") != 0) { goto bad; } } else { if (strcmp(straddr, "127.0.0.1") != 0) { goto bad; } } inet4++; break; case AF_INET6: if (strcmp(strport, "54321") != 0) { goto bad; } if (passive) { if (strcmp(straddr, "::") != 0) { goto bad; } } else { if (strcmp(straddr, "::1") != 0) { goto bad; } } inet6++; break; case AF_UNSPEC: goto bad; break; default: /* another family support? */ break; } } freeaddrinfo(aitop); aitop = NULL; } if (!(inet4 == 0 || inet4 == 2)) goto bad; if (!(inet6 == 0 || inet6 == 2)) goto bad; if (aitop) freeaddrinfo(aitop); return 0; bad: if (aitop) freeaddrinfo(aitop); return 1; } ]]])], [ac_cv_buggy_getaddrinfo=no], [ac_cv_buggy_getaddrinfo=yes], [ if test "${enable_ipv6+set}" = set; then ac_cv_buggy_getaddrinfo="no -- configured with --(en|dis)able-ipv6" else ac_cv_buggy_getaddrinfo=yes fi])) dnl if ac_cv_func_getaddrinfo ]) if test "$ac_cv_func_getaddrinfo" = no -o "$ac_cv_buggy_getaddrinfo" = yes then if test $ipv6 = yes then echo 'Fatal: You must get working getaddrinfo() function.' echo ' or you can specify "--disable-ipv6"'. exit 1 fi else AC_DEFINE(HAVE_GETADDRINFO, 1, [Define if you have the getaddrinfo function.]) fi AC_CHECK_FUNCS(getnameinfo) dnl autoconf 2.71 deprecates AC_HEADER_TIME, keep for backwards compatibility dnl TIME_WITH_SYS_TIME works on all supported systems that have sys/time.h AS_VAR_IF([ac_cv_header_sys_time_h], [yes], [ AC_DEFINE([TIME_WITH_SYS_TIME], 1, [Define to 1 if you can safely include both and .]) ]) # checks for structures AC_STRUCT_TM AC_STRUCT_TIMEZONE AC_CHECK_MEMBERS([struct stat.st_rdev]) AC_CHECK_MEMBERS([struct stat.st_blksize]) AC_CHECK_MEMBERS([struct stat.st_flags]) AC_CHECK_MEMBERS([struct stat.st_gen]) AC_CHECK_MEMBERS([struct stat.st_birthtime]) AC_CHECK_MEMBERS([struct stat.st_blocks]) AC_CHECK_MEMBERS([struct passwd.pw_gecos, struct passwd.pw_passwd], [], [], [[ #include #include ]]) # Issue #21085: In Cygwin, siginfo_t does not have si_band field. AC_CHECK_MEMBERS([siginfo_t.si_band], [], [], [[#include ]]) AC_CACHE_CHECK([for time.h that defines altzone], [ac_cv_header_time_altzone], [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[return altzone;]])], [ac_cv_header_time_altzone=yes], [ac_cv_header_time_altzone=no]) ]) if test $ac_cv_header_time_altzone = yes; then AC_DEFINE(HAVE_ALTZONE, 1, [Define this if your time.h defines altzone.]) fi AC_CACHE_CHECK([for addrinfo], [ac_cv_struct_addrinfo], AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[struct addrinfo a]])], [ac_cv_struct_addrinfo=yes], [ac_cv_struct_addrinfo=no])) if test $ac_cv_struct_addrinfo = yes; then AC_DEFINE(HAVE_ADDRINFO, 1, [struct addrinfo (netdb.h)]) fi AC_CACHE_CHECK([for sockaddr_storage], [ac_cv_struct_sockaddr_storage], AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ # include # include ]], [[struct sockaddr_storage s]])], [ac_cv_struct_sockaddr_storage=yes], [ac_cv_struct_sockaddr_storage=no])) if test $ac_cv_struct_sockaddr_storage = yes; then AC_DEFINE(HAVE_SOCKADDR_STORAGE, 1, [struct sockaddr_storage (sys/socket.h)]) fi AC_CACHE_CHECK([for sockaddr_alg], [ac_cv_struct_sockaddr_alg], AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ # include # include # include ]], [[struct sockaddr_alg s]])], [ac_cv_struct_sockaddr_alg=yes], [ac_cv_struct_sockaddr_alg=no])) if test $ac_cv_struct_sockaddr_alg = yes; then AC_DEFINE(HAVE_SOCKADDR_ALG, 1, [struct sockaddr_alg (linux/if_alg.h)]) fi # checks for compiler characteristics AC_C_CHAR_UNSIGNED AC_C_CONST AC_CACHE_CHECK([for working signed char], [ac_cv_working_signed_char_c], [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[signed char c;]])], [ac_cv_working_signed_char_c=yes], [ac_cv_working_signed_char_c=no]) ]) AS_VAR_IF([ac_cv_working_signed_char_c], [no], [ AC_DEFINE(signed, , [Define to empty if the keyword does not work.]) ]) AC_CACHE_CHECK([for prototypes], [ac_cv_function_prototypes], [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[int foo(int x) { return 0; }]], [[return foo(10);]])], [ac_cv_function_prototypes=yes], [ac_cv_function_prototypes=no]) ]) AS_VAR_IF([ac_cv_function_prototypes], [yes], [ AC_DEFINE(HAVE_PROTOTYPES, 1, [Define if your compiler supports function prototype]) ]) works=no AC_CACHE_CHECK([for variable length prototypes and stdarg.h], [ac_cv_stdarg_prototypes], [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include int foo(int x, ...) { va_list va; va_start(va, x); va_arg(va, int); va_arg(va, char *); va_arg(va, double); return 0; } ]], [[return foo(10, "", 3.14);]])], [ac_cv_stdarg_prototypes=yes], [ac_cv_stdarg_prototypes=no]) ]) AS_VAR_IF([ac_cv_stdarg_prototypes], [yes], [ AC_DEFINE(HAVE_STDARG_PROTOTYPES, 1, [Define if your compiler supports variable length function prototypes (e.g. void fprintf(FILE *, char *, ...);) *and* ]) ]) # check for socketpair PY_CHECK_FUNC([socketpair], [ #include #include ]) # check if sockaddr has sa_len member AC_CACHE_CHECK([if sockaddr has sa_len member], [ac_cv_struct_sockaddr_sa_len], [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include #include ]], [[struct sockaddr x; x.sa_len = 0;]])], [ac_cv_struct_sockaddr_sa_len=yes], [ac_cv_struct_sockaddr_sa_len=no]) ]) AS_VAR_IF([ac_cv_struct_sockaddr_sa_len], [yes], [ AC_DEFINE(HAVE_SOCKADDR_SA_LEN, 1, [Define if sockaddr has sa_len member]) ]) # sigh -- gethostbyname_r is a mess; it can have 3, 5 or 6 arguments :-( AH_TEMPLATE(HAVE_GETHOSTBYNAME_R, [Define this if you have some version of gethostbyname_r()]) AC_CHECK_FUNC(gethostbyname_r, [ AC_DEFINE(HAVE_GETHOSTBYNAME_R) AC_MSG_CHECKING([gethostbyname_r with 6 args]) OLD_CFLAGS=$CFLAGS CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ # include ]], [[ char *name; struct hostent *he, *res; char buffer[2048]; int buflen = 2048; int h_errnop; (void) gethostbyname_r(name, he, buffer, buflen, &res, &h_errnop) ]])],[ AC_DEFINE(HAVE_GETHOSTBYNAME_R) AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1, [Define this if you have the 6-arg version of gethostbyname_r().]) AC_MSG_RESULT(yes) ],[ AC_MSG_RESULT(no) AC_MSG_CHECKING([gethostbyname_r with 5 args]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ # include ]], [[ char *name; struct hostent *he; char buffer[2048]; int buflen = 2048; int h_errnop; (void) gethostbyname_r(name, he, buffer, buflen, &h_errnop) ]])], [ AC_DEFINE(HAVE_GETHOSTBYNAME_R) AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1, [Define this if you have the 5-arg version of gethostbyname_r().]) AC_MSG_RESULT(yes) ], [ AC_MSG_RESULT(no) AC_MSG_CHECKING([gethostbyname_r with 3 args]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ # include ]], [[ char *name; struct hostent *he; struct hostent_data data; (void) gethostbyname_r(name, he, &data); ]])], [ AC_DEFINE(HAVE_GETHOSTBYNAME_R) AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1, [Define this if you have the 3-arg version of gethostbyname_r().]) AC_MSG_RESULT(yes) ], [ AC_MSG_RESULT(no) ]) ]) ]) CFLAGS=$OLD_CFLAGS ], [ AC_CHECK_FUNCS(gethostbyname) ]) AC_SUBST(HAVE_GETHOSTBYNAME_R_6_ARG) AC_SUBST(HAVE_GETHOSTBYNAME_R_5_ARG) AC_SUBST(HAVE_GETHOSTBYNAME_R_3_ARG) AC_SUBST(HAVE_GETHOSTBYNAME_R) AC_SUBST(HAVE_GETHOSTBYNAME) # checks for system services # (none yet) # Linux requires this for correct f.p. operations AC_CHECK_FUNC(__fpu_control, [], [AC_CHECK_LIB(ieee, __fpu_control) ]) # check for --with-libm=... AC_SUBST(LIBM) case $ac_sys_system in Darwin) ;; *) LIBM=-lm esac AC_MSG_CHECKING(for --with-libm=STRING) AC_ARG_WITH(libm, AS_HELP_STRING([--with-libm=STRING], [override libm math library to STRING (default is system-dependent)]), [ if test "$withval" = no then LIBM= AC_MSG_RESULT(force LIBM empty) elif test "$withval" != yes then LIBM=$withval AC_MSG_RESULT(set LIBM="$withval") else AC_MSG_ERROR([proper usage is --with-libm=STRING]) fi], [AC_MSG_RESULT(default LIBM="$LIBM")]) # check for --with-libc=... AC_SUBST(LIBC) AC_MSG_CHECKING(for --with-libc=STRING) AC_ARG_WITH(libc, AS_HELP_STRING([--with-libc=STRING], [override libc C library to STRING (default is system-dependent)]), [ if test "$withval" = no then LIBC= AC_MSG_RESULT(force LIBC empty) elif test "$withval" != yes then LIBC=$withval AC_MSG_RESULT(set LIBC="$withval") else AC_MSG_ERROR([proper usage is --with-libc=STRING]) fi], [AC_MSG_RESULT(default LIBC="$LIBC")]) # ************************************** # * Check for gcc x64 inline assembler * # ************************************** AC_CACHE_CHECK([for x64 gcc inline assembler], [ac_cv_gcc_asm_for_x64], [ AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[ __asm__ __volatile__ ("movq %rcx, %rax"); ]])],[ac_cv_gcc_asm_for_x64=yes],[ac_cv_gcc_asm_for_x64=no]) ]) AS_VAR_IF([ac_cv_gcc_asm_for_x64], [yes], [ AC_DEFINE(HAVE_GCC_ASM_FOR_X64, 1, [Define if we can use x64 gcc inline assembler]) ]) # ************************************************** # * Check for various properties of floating point * # ************************************************** AX_C_FLOAT_WORDS_BIGENDIAN if test "$ax_cv_c_float_words_bigendian" = "yes" then AC_DEFINE(DOUBLE_IS_BIG_ENDIAN_IEEE754, 1, [Define if C doubles are 64-bit IEEE 754 binary format, stored with the most significant byte first]) elif test "$ax_cv_c_float_words_bigendian" = "no" then AC_DEFINE(DOUBLE_IS_LITTLE_ENDIAN_IEEE754, 1, [Define if C doubles are 64-bit IEEE 754 binary format, stored with the least significant byte first]) else # Some ARM platforms use a mixed-endian representation for doubles. # While Python doesn't currently have full support for these platforms # (see e.g., issue 1762561), we can at least make sure that float <-> string # conversions work. # FLOAT_WORDS_BIGENDIAN doesnt actually detect this case, but if it's not big # or little, then it must be this? AC_DEFINE(DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754, 1, [Define if C doubles are 64-bit IEEE 754 binary format, stored in ARM mixed-endian order (byte order 45670123)]) fi # The short float repr introduced in Python 3.1 requires the # correctly-rounded string <-> double conversion functions from # Python/dtoa.c, which in turn require that the FPU uses 53-bit # rounding; this is a problem on x86, where the x87 FPU has a default # rounding precision of 64 bits. For gcc/x86, we can fix this by # using inline assembler to get and set the x87 FPU control word. # This inline assembler syntax may also work for suncc and icc, # so we try it on all platforms. AC_CACHE_CHECK([whether we can use gcc inline assembler to get and set x87 control word], [ac_cv_gcc_asm_for_x87], [ AC_LINK_IFELSE( [AC_LANG_PROGRAM([[]], [[ unsigned short cw; __asm__ __volatile__ ("fnstcw %0" : "=m" (cw)); __asm__ __volatile__ ("fldcw %0" : : "m" (cw)); ]])],[ac_cv_gcc_asm_for_x87=yes],[ac_cv_gcc_asm_for_x87=no]) ]) AS_VAR_IF([ac_cv_gcc_asm_for_x87], [yes], [ AC_DEFINE(HAVE_GCC_ASM_FOR_X87, 1, [Define if we can use gcc inline assembler to get and set x87 control word]) ]) AC_CACHE_CHECK([whether we can use gcc inline assembler to get and set mc68881 fpcr], [ac_cv_gcc_asm_for_mc68881], [ AC_LINK_IFELSE( [AC_LANG_PROGRAM([[]], [[ unsigned int fpcr; __asm__ __volatile__ ("fmove.l %%fpcr,%0" : "=g" (fpcr)); __asm__ __volatile__ ("fmove.l %0,%%fpcr" : : "g" (fpcr)); ]])],[ac_cv_gcc_asm_for_mc68881=yes],[ac_cv_gcc_asm_for_mc68881=no]) ]) AS_VAR_IF([ac_cv_gcc_asm_for_mc68881], [yes], [ AC_DEFINE(HAVE_GCC_ASM_FOR_MC68881, 1, [Define if we can use gcc inline assembler to get and set mc68881 fpcr]) ]) # Detect whether system arithmetic is subject to x87-style double # rounding issues. The result of this test has little meaning on non # IEEE 754 platforms. On IEEE 754, test should return 1 if rounding # mode is round-to-nearest and double rounding issues are present, and # 0 otherwise. See http://bugs.python.org/issue2937 for more info. AC_CACHE_CHECK([for x87-style double rounding], [ac_cv_x87_double_rounding], [ # $BASECFLAGS may affect the result ac_save_cc="$CC" CC="$CC $BASECFLAGS" AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include int main() { volatile double x, y, z; /* 1./(1-2**-53) -> 1+2**-52 (correct), 1.0 (double rounding) */ x = 0.99999999999999989; /* 1-2**-53 */ y = 1./x; if (y != 1.) exit(0); /* 1e16+2.99999 -> 1e16+2. (correct), 1e16+4. (double rounding) */ x = 1e16; y = 2.99999; z = x + y; if (z != 1e16+4.) exit(0); /* both tests show evidence of double rounding */ exit(1); } ]])], [ac_cv_x87_double_rounding=no], [ac_cv_x87_double_rounding=yes], [ac_cv_x87_double_rounding=no]) CC="$ac_save_cc" ]) AS_VAR_IF([ac_cv_x87_double_rounding], [yes], [ AC_DEFINE(X87_DOUBLE_ROUNDING, 1, [Define if arithmetic is subject to x87-style double rounding issue]) ]) # ************************************ # * Check for mathematical functions * # ************************************ LIBS_SAVE=$LIBS LIBS="$LIBS $LIBM" AC_CHECK_FUNCS( [acosh asinh atanh erf erfc expm1 log1p log2], [], [AC_MSG_ERROR([Python requires C99 compatible libm])] ) LIBS=$LIBS_SAVE # For multiprocessing module, check that sem_open # actually works. For FreeBSD versions <= 7.2, # the kernel module that provides POSIX semaphores # isn't loaded by default, so an attempt to call # sem_open results in a 'Signal 12' error. AC_CACHE_CHECK([whether POSIX semaphores are enabled], [ac_cv_posix_semaphores_enabled], AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #include #include #include int main(void) { sem_t *a = sem_open("/autoconf", O_CREAT, S_IRUSR|S_IWUSR, 0); if (a == SEM_FAILED) { perror("sem_open"); return 1; } sem_close(a); sem_unlink("/autoconf"); return 0; } ]])], [ac_cv_posix_semaphores_enabled=yes], [ac_cv_posix_semaphores_enabled=no], [ac_cv_posix_semaphores_enabled=yes]) ) if test $ac_cv_posix_semaphores_enabled = no then AC_DEFINE(POSIX_SEMAPHORES_NOT_ENABLED, 1, [Define if POSIX semaphores aren't enabled on your system]) fi # Multiprocessing check for broken sem_getvalue AC_CACHE_CHECK([for broken sem_getvalue], [ac_cv_broken_sem_getvalue], AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #include #include #include int main(void){ sem_t *a = sem_open("/autocftw", O_CREAT, S_IRUSR|S_IWUSR, 0); int count; int res; if(a==SEM_FAILED){ perror("sem_open"); return 1; } res = sem_getvalue(a, &count); sem_close(a); sem_unlink("/autocftw"); return res==-1 ? 1 : 0; } ]])], [ac_cv_broken_sem_getvalue=no], [ac_cv_broken_sem_getvalue=yes], [ac_cv_broken_sem_getvalue=yes]) ) if test $ac_cv_broken_sem_getvalue = yes then AC_DEFINE(HAVE_BROKEN_SEM_GETVALUE, 1, [define to 1 if your sem_getvalue is broken.]) fi AC_CHECK_DECLS([RTLD_LAZY, RTLD_NOW, RTLD_GLOBAL, RTLD_LOCAL, RTLD_NODELETE, RTLD_NOLOAD, RTLD_DEEPBIND, RTLD_MEMBER], [], [], [[#include ]]) # determine what size digit to use for Python's longs AC_MSG_CHECKING([digit size for Python's longs]) AC_ARG_ENABLE(big-digits, AS_HELP_STRING([--enable-big-digits@<:@=15|30@:>@],[use big digits (30 or 15 bits) for Python longs (default is system-dependent)]]), [case $enable_big_digits in yes) enable_big_digits=30 ;; no) enable_big_digits=15 ;; [15|30]) ;; *) AC_MSG_ERROR([bad value $enable_big_digits for --enable-big-digits; value should be 15 or 30]) ;; esac AC_MSG_RESULT($enable_big_digits) AC_DEFINE_UNQUOTED(PYLONG_BITS_IN_DIGIT, $enable_big_digits, [Define as the preferred size in bits of long digits]) ], [AC_MSG_RESULT(no value specified)]) # check for wchar.h AC_CHECK_HEADER(wchar.h, [ AC_DEFINE(HAVE_WCHAR_H, 1, [Define if the compiler provides a wchar.h header file.]) wchar_h="yes" ], wchar_h="no" ) # determine wchar_t size if test "$wchar_h" = yes then AC_CHECK_SIZEOF(wchar_t, 4, [#include ]) fi AC_MSG_CHECKING(for UCS-4 tcl) have_ucs4_tcl=no AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include #if TCL_UTF_MAX != 6 # error "NOT UCS4_TCL" #endif]], [[]])],[ AC_DEFINE(HAVE_UCS4_TCL, 1, [Define this if you have tcl and TCL_UTF_MAX==6]) have_ucs4_tcl=yes ],[]) AC_MSG_RESULT($have_ucs4_tcl) # check whether wchar_t is signed or not if test "$wchar_h" = yes then # check whether wchar_t is signed or not AC_CACHE_CHECK([whether wchar_t is signed], [ac_cv_wchar_t_signed], [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include int main() { /* Success: exit code 0 */ return ((((wchar_t) -1) < ((wchar_t) 0)) ? 0 : 1); } ]])], [ac_cv_wchar_t_signed=yes], [ac_cv_wchar_t_signed=no], [ac_cv_wchar_t_signed=yes])]) fi AC_MSG_CHECKING(whether wchar_t is usable) # wchar_t is only usable if it maps to an unsigned type if test "$ac_cv_sizeof_wchar_t" -ge 2 \ -a "$ac_cv_wchar_t_signed" = "no" then AC_DEFINE(HAVE_USABLE_WCHAR_T, 1, [Define if you have a useable wchar_t type defined in wchar.h; useable means wchar_t must be an unsigned type with at least 16 bits. (see Include/unicodeobject.h).]) AC_MSG_RESULT(yes) else AC_MSG_RESULT(no) fi case $ac_sys_system/$ac_sys_release in SunOS/*) if test -f /etc/os-release; then OS_NAME=$(awk -F= '/^NAME=/ {print substr($2,2,length($2)-2)}' /etc/os-release) if test "x$OS_NAME" = "xOracle Solaris"; then # bpo-43667: In Oracle Solaris, the internal form of wchar_t in # non-Unicode locales is not Unicode and hence cannot be used directly. # https://docs.oracle.com/cd/E37838_01/html/E61053/gmwke.html AC_DEFINE(HAVE_NON_UNICODE_WCHAR_T_REPRESENTATION, 1, [Define if the internal form of wchar_t in non-Unicode locales is not Unicode.]) fi fi ;; esac # check for endianness AC_C_BIGENDIAN # ABI version string for Python extension modules. This appears between the # periods in shared library file names, e.g. foo..so. It is calculated # from the following attributes which affect the ABI of this Python build (in # this order): # # * The Python implementation (always 'cpython-' for us) # * The major and minor version numbers # * --with-pydebug (adds a 'd') # # Thus for example, Python 3.2 built with wide unicode, pydebug, and pymalloc, # would get a shared library ABI version tag of 'cpython-32dmu' and shared # libraries would be named 'foo.cpython-32dmu.so'. # # In Python 3.2 and older, --with-wide-unicode added a 'u' flag. # In Python 3.7 and older, --with-pymalloc added a 'm' flag. AC_SUBST(SOABI) AC_MSG_CHECKING(ABIFLAGS) AC_MSG_RESULT($ABIFLAGS) AC_MSG_CHECKING(SOABI) SOABI='cpython-'`echo $VERSION | tr -d .`${ABIFLAGS}${PLATFORM_TRIPLET:+-$PLATFORM_TRIPLET} AC_MSG_RESULT($SOABI) # Release and debug (Py_DEBUG) ABI are compatible, but not Py_TRACE_REFS ABI if test "$Py_DEBUG" = 'true' -a "$with_trace_refs" != "yes"; then # Similar to SOABI but remove "d" flag from ABIFLAGS AC_SUBST(ALT_SOABI) ALT_SOABI='cpython-'`echo $VERSION | tr -d .``echo $ABIFLAGS | tr -d d`${PLATFORM_TRIPLET:+-$PLATFORM_TRIPLET} AC_DEFINE_UNQUOTED(ALT_SOABI, "${ALT_SOABI}", [Alternative SOABI used in debug build to load C extensions built in release mode]) fi AC_SUBST(EXT_SUFFIX) EXT_SUFFIX=.${SOABI}${SHLIB_SUFFIX} AC_MSG_CHECKING(LDVERSION) LDVERSION='$(VERSION)$(ABIFLAGS)' AC_MSG_RESULT($LDVERSION) # On Android and Cygwin the shared libraries must be linked with libpython. AC_SUBST(LIBPYTHON) if test -n "$ANDROID_API_LEVEL" -o "$MACHDEP" = "cygwin"; then LIBPYTHON="-lpython${VERSION}${ABIFLAGS}" else LIBPYTHON='' fi AC_SUBST(BINLIBDEST) BINLIBDEST='$(LIBDIR)/python$(VERSION)' # Check for --with-platlibdir # /usr/$LIDIRNAME/python$VERSION AC_SUBST(PLATLIBDIR) PLATLIBDIR="lib" AC_MSG_CHECKING(for --with-platlibdir) AC_ARG_WITH(platlibdir, AS_HELP_STRING([--with-platlibdir=DIRNAME], [Python library directory name (default is "lib")]), [ # ignore 3 options: # --with-platlibdir # --with-platlibdir= # --without-platlibdir if test -n "$withval" -a "$withval" != yes -a "$withval" != no then AC_MSG_RESULT(yes) PLATLIBDIR="$withval" BINLIBDEST='${exec_prefix}/${PLATLIBDIR}/python$(VERSION)' else AC_MSG_RESULT(no) fi], [AC_MSG_RESULT(no)]) dnl define LIBPL after ABIFLAGS and LDVERSION is defined. AC_SUBST(PY_ENABLE_SHARED) if test x$PLATFORM_TRIPLET = x; then LIBPL='$(prefix)'"/${PLATLIBDIR}/python${VERSION}/config-${LDVERSION}" else LIBPL='$(prefix)'"/${PLATLIBDIR}/python${VERSION}/config-${LDVERSION}-${PLATFORM_TRIPLET}" fi AC_SUBST(LIBPL) # Check for --with-wheel-pkg-dir=PATH AC_SUBST(WHEEL_PKG_DIR) WHEEL_PKG_DIR="" AC_MSG_CHECKING(for --with-wheel-pkg-dir) AC_ARG_WITH(wheel-pkg-dir, AS_HELP_STRING([--with-wheel-pkg-dir=PATH], [Directory of wheel packages used by ensurepip (default: none)]), [ if test -n "$withval"; then AC_MSG_RESULT(yes) WHEEL_PKG_DIR="$withval" else AC_MSG_RESULT(no) fi], [AC_MSG_RESULT(no)]) # Check whether right shifting a negative integer extends the sign bit # or fills with zeros (like the Cray J90, according to Tim Peters). AC_CACHE_CHECK([whether right shift extends the sign bit], [ac_cv_rshift_extends_sign], [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ int main() { return (((-1)>>3 == -1) ? 0 : 1); } ]])], [ac_cv_rshift_extends_sign=yes], [ac_cv_rshift_extends_sign=no], [ac_cv_rshift_extends_sign=yes])]) if test "$ac_cv_rshift_extends_sign" = no then AC_DEFINE(SIGNED_RIGHT_SHIFT_ZERO_FILLS, 1, [Define if i>>j for signed int i does not extend the sign bit when i < 0]) fi # check for getc_unlocked and related locking functions AC_CACHE_CHECK([for getc_unlocked() and friends], [ac_cv_have_getc_unlocked], [ AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ FILE *f = fopen("/dev/null", "r"); flockfile(f); getc_unlocked(f); funlockfile(f); ]])],[ac_cv_have_getc_unlocked=yes],[ac_cv_have_getc_unlocked=no])]) if test "$ac_cv_have_getc_unlocked" = yes then AC_DEFINE(HAVE_GETC_UNLOCKED, 1, [Define this if you have flockfile(), getc_unlocked(), and funlockfile()]) fi AC_ARG_WITH([readline], [AS_HELP_STRING([--with(out)-readline@<:@=editline@:>@], [use Editline for backend or disable readline module])], [], [with_readline=yes]) # check where readline lives py_cv_lib_readline=no # save the value of LIBS so we don't actually link Python with readline LIBS_no_readline=$LIBS if test "$with_readline" != no; then case "$with_readline" in editline|edit) LIBREADLINE=edit AC_DEFINE(WITH_EDITLINE, 1, [Define to build the readline module against Editline.]) ;; yes|readline) LIBREADLINE=readline ;; *) AC_MSG_ERROR([proper usage is --with(out)-readline@<:@=editline@:>@]) ;; esac # On some systems we need to link readline to a termcap compatible # library. NOTE: Keep the precedence of listed libraries synchronised # with setup.py. AC_MSG_CHECKING([how to link readline libs]) for py_libtermcap in "" tinfo ncursesw ncurses curses termcap; do if test -z "$py_libtermcap"; then READLINE_LIBS="-l$LIBREADLINE" else READLINE_LIBS="-l$LIBREADLINE -l$py_libtermcap" fi LIBS="$READLINE_LIBS $LIBS_no_readline" AC_LINK_IFELSE( [AC_LANG_CALL([],[readline])], [py_cv_lib_readline=yes]) if test $py_cv_lib_readline = yes; then break fi done # Uncomment this line if you want to use READLINE_LIBS in Makefile or scripts #AC_SUBST([READLINE_LIBS]) if test $py_cv_lib_readline = no; then AC_MSG_RESULT([none]) else AC_MSG_RESULT([$READLINE_LIBS]) AC_DEFINE(HAVE_LIBREADLINE, 1, [Define to build the readline module.]) fi fi if test "$py_cv_lib_readline" = yes; then # check for readline 2.2 AC_CHECK_DECL(rl_completion_append_character, AC_DEFINE(HAVE_RL_COMPLETION_APPEND_CHARACTER, 1, [Define if you have readline 2.2]),, [ #include /* Must be first for Gnu Readline */ #ifdef WITH_EDITLINE # include #else # include #endif ]) AC_CHECK_DECL(rl_completion_suppress_append, AC_DEFINE(HAVE_RL_COMPLETION_SUPPRESS_APPEND, 1, [Define if you have rl_completion_suppress_append]),, [ #include /* Must be first for Gnu Readline */ #ifdef WITH_EDITLINE # include #else # include #endif ]) # check for readline 4.0 AC_CHECK_LIB($LIBREADLINE, rl_pre_input_hook, AC_DEFINE(HAVE_RL_PRE_INPUT_HOOK, 1, [Define if you have readline 4.0]),,$READLINE_LIBS) # also in 4.0 AC_CHECK_LIB($LIBREADLINE, rl_completion_display_matches_hook, AC_DEFINE(HAVE_RL_COMPLETION_DISPLAY_MATCHES_HOOK, 1, [Define if you have readline 4.0]),,$READLINE_LIBS) # also in 4.0, but not in editline AC_CHECK_LIB($LIBREADLINE, rl_resize_terminal, AC_DEFINE(HAVE_RL_RESIZE_TERMINAL, 1, [Define if you have readline 4.0]),,$READLINE_LIBS) # check for readline 4.2 AC_CHECK_LIB($LIBREADLINE, rl_completion_matches, AC_DEFINE(HAVE_RL_COMPLETION_MATCHES, 1, [Define if you have readline 4.2]),,$READLINE_LIBS) # also in readline 4.2 AC_CHECK_DECL(rl_catch_signals, AC_DEFINE(HAVE_RL_CATCH_SIGNAL, 1, [Define if you can turn off readline's signal handling.]),, [ #include /* Must be first for Gnu Readline */ #ifdef WITH_EDITLINE # include #else # include #endif ]) AC_CHECK_LIB($LIBREADLINE, append_history, AC_DEFINE(HAVE_RL_APPEND_HISTORY, 1, [Define if readline supports append_history]),,$READLINE_LIBS) fi # End of readline checks: restore LIBS LIBS=$LIBS_no_readline AC_CACHE_CHECK([for broken nice()], [ac_cv_broken_nice], [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include int main() { int val1 = nice(1); if (val1 != -1 && val1 == nice(2)) exit(0); exit(1); } ]])], [ac_cv_broken_nice=yes], [ac_cv_broken_nice=no], [ac_cv_broken_nice=no])]) if test "$ac_cv_broken_nice" = yes then AC_DEFINE(HAVE_BROKEN_NICE, 1, [Define if nice() returns success/failure instead of the new priority.]) fi AC_CACHE_CHECK([for broken poll()], [ac_cv_broken_poll], AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include int main() { struct pollfd poll_struct = { 42, POLLIN|POLLPRI|POLLOUT, 0 }; int poll_test; close (42); poll_test = poll(&poll_struct, 1, 0); if (poll_test < 0) return 0; else if (poll_test == 0 && poll_struct.revents != POLLNVAL) return 0; else return 1; } ]])], [ac_cv_broken_poll=yes], [ac_cv_broken_poll=no], [ac_cv_broken_poll=no])) if test "$ac_cv_broken_poll" = yes then AC_DEFINE(HAVE_BROKEN_POLL, 1, [Define if poll() sets errno on invalid file descriptors.]) fi # check tzset(3) exists and works like we expect it to AC_CACHE_CHECK([for working tzset()], [ac_cv_working_tzset], [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #include #if HAVE_TZNAME extern char *tzname[]; #endif int main() { /* Note that we need to ensure that not only does tzset(3) do 'something' with localtime, but it works as documented in the library reference and as expected by the test suite. This includes making sure that tzname is set properly if tm->tm_zone does not exist since it is the alternative way of getting timezone info. Red Hat 6.2 doesn't understand the southern hemisphere after New Year's Day. */ time_t groundhogday = 1044144000; /* GMT-based */ time_t midyear = groundhogday + (365 * 24 * 3600 / 2); putenv("TZ=UTC+0"); tzset(); if (localtime(&groundhogday)->tm_hour != 0) exit(1); #if HAVE_TZNAME /* For UTC, tzname[1] is sometimes "", sometimes " " */ if (strcmp(tzname[0], "UTC") || (tzname[1][0] != 0 && tzname[1][0] != ' ')) exit(1); #endif putenv("TZ=EST+5EDT,M4.1.0,M10.5.0"); tzset(); if (localtime(&groundhogday)->tm_hour != 19) exit(1); #if HAVE_TZNAME if (strcmp(tzname[0], "EST") || strcmp(tzname[1], "EDT")) exit(1); #endif putenv("TZ=AEST-10AEDT-11,M10.5.0,M3.5.0"); tzset(); if (localtime(&groundhogday)->tm_hour != 11) exit(1); #if HAVE_TZNAME if (strcmp(tzname[0], "AEST") || strcmp(tzname[1], "AEDT")) exit(1); #endif #if HAVE_STRUCT_TM_TM_ZONE if (strcmp(localtime(&groundhogday)->tm_zone, "AEDT")) exit(1); if (strcmp(localtime(&midyear)->tm_zone, "AEST")) exit(1); #endif exit(0); } ]])], [ac_cv_working_tzset=yes], [ac_cv_working_tzset=no], [ac_cv_working_tzset=no])]) if test "$ac_cv_working_tzset" = yes then AC_DEFINE(HAVE_WORKING_TZSET, 1, [Define if tzset() actually switches the local timezone in a meaningful way.]) fi # Look for subsecond timestamps in struct stat AC_CACHE_CHECK([for tv_nsec in struct stat], [ac_cv_stat_tv_nsec], AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ struct stat st; st.st_mtim.tv_nsec = 1; ]])], [ac_cv_stat_tv_nsec=yes], [ac_cv_stat_tv_nsec=no])) if test "$ac_cv_stat_tv_nsec" = yes then AC_DEFINE(HAVE_STAT_TV_NSEC, 1, [Define if you have struct stat.st_mtim.tv_nsec]) fi # Look for BSD style subsecond timestamps in struct stat AC_CACHE_CHECK([for tv_nsec2 in struct stat], [ac_cv_stat_tv_nsec2], AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ struct stat st; st.st_mtimespec.tv_nsec = 1; ]])], [ac_cv_stat_tv_nsec2=yes], [ac_cv_stat_tv_nsec2=no])) if test "$ac_cv_stat_tv_nsec2" = yes then AC_DEFINE(HAVE_STAT_TV_NSEC2, 1, [Define if you have struct stat.st_mtimensec]) fi # first curses header check ac_save_cppflags="$CPPFLAGS" if test "$cross_compiling" = no; then CPPFLAGS="$CPPFLAGS -I/usr/include/ncursesw" fi AC_CHECK_HEADERS(curses.h ncurses.h) # On Solaris, term.h requires curses.h AC_CHECK_HEADERS(term.h,,,[ #ifdef HAVE_CURSES_H #include #endif ]) # On HP/UX 11.0, mvwdelch is a block with a return statement AC_CACHE_CHECK([whether mvwdelch is an expression], [ac_cv_mvwdelch_is_expression], AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ int rtn; rtn = mvwdelch(0,0,0); ]])], [ac_cv_mvwdelch_is_expression=yes], [ac_cv_mvwdelch_is_expression=no])) if test "$ac_cv_mvwdelch_is_expression" = yes then AC_DEFINE(MVWDELCH_IS_EXPRESSION, 1, [Define if mvwdelch in curses.h is an expression.]) fi # Issue #25720: ncurses has introduced the NCURSES_OPAQUE symbol making opaque # structs since version 5.7. If the macro is defined as zero before including # [n]curses.h, ncurses will expose fields of the structs regardless of the # configuration. AC_CACHE_CHECK([whether WINDOW has _flags], [ac_cv_window_has_flags], AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #define NCURSES_OPAQUE 0 #include ]], [[ WINDOW *w; w->_flags = 0; ]])], [ac_cv_window_has_flags=yes], [ac_cv_window_has_flags=no])) if test "$ac_cv_window_has_flags" = yes then AC_DEFINE(WINDOW_HAS_FLAGS, 1, [Define if WINDOW in curses.h offers a field _flags.]) fi dnl PY_CHECK_CURSES_FUNC(FUNCTION) AC_DEFUN([PY_CHECK_CURSES_FUNC], [ AS_VAR_PUSHDEF([py_var], [ac_cv_lib_curses_$1]) AS_VAR_PUSHDEF([py_define], [HAVE_CURSES_]m4_toupper($1)) AC_CACHE_CHECK( [for curses function $1], [py_var], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [#include ], [ #ifndef $1 void *x=$1 #endif ])], [AS_VAR_SET([py_var], [yes])], [AS_VAR_SET([py_var], [no])])] ) AS_VAR_IF( [py_var], [yes], [AC_DEFINE([py_define], [1], [Define if you have the '$1' function.])]) AS_VAR_POPDEF([py_var]) AS_VAR_POPDEF([py_define]) ]) PY_CHECK_CURSES_FUNC([is_pad]) PY_CHECK_CURSES_FUNC([is_term_resized]) PY_CHECK_CURSES_FUNC([resize_term]) PY_CHECK_CURSES_FUNC([resizeterm]) PY_CHECK_CURSES_FUNC([immedok]) PY_CHECK_CURSES_FUNC([syncok]) PY_CHECK_CURSES_FUNC([wchgat]) PY_CHECK_CURSES_FUNC([filter]) PY_CHECK_CURSES_FUNC([has_key]) PY_CHECK_CURSES_FUNC([typeahead]) PY_CHECK_CURSES_FUNC([use_env]) CPPFLAGS=$ac_save_cppflags AC_MSG_NOTICE([checking for device files]) dnl NOTE: Inform user how to proceed with files when cross compiling. if test "x$cross_compiling" = xyes; then if test "${ac_cv_file__dev_ptmx+set}" != set; then AC_MSG_CHECKING([for /dev/ptmx]) AC_MSG_RESULT([not set]) AC_MSG_ERROR([set ac_cv_file__dev_ptmx to yes/no in your CONFIG_SITE file when cross compiling]) fi if test "${ac_cv_file__dev_ptc+set}" != set; then AC_MSG_CHECKING([for /dev/ptc]) AC_MSG_RESULT([not set]) AC_MSG_ERROR([set ac_cv_file__dev_ptc to yes/no in your CONFIG_SITE file when cross compiling]) fi fi AC_CHECK_FILE(/dev/ptmx, [], []) if test "x$ac_cv_file__dev_ptmx" = xyes; then AC_DEFINE(HAVE_DEV_PTMX, 1, [Define to 1 if you have the /dev/ptmx device file.]) fi AC_CHECK_FILE(/dev/ptc, [], []) if test "x$ac_cv_file__dev_ptc" = xyes; then AC_DEFINE(HAVE_DEV_PTC, 1, [Define to 1 if you have the /dev/ptc device file.]) fi if test $ac_sys_system = Darwin then LIBS="$LIBS -framework CoreFoundation" fi AC_CACHE_CHECK([for %zd printf() format support], ac_cv_have_size_t_format, [dnl AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #include #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_SSIZE_T typedef ssize_t Py_ssize_t; #elif SIZEOF_VOID_P == SIZEOF_LONG typedef long Py_ssize_t; #else typedef int Py_ssize_t; #endif int main() { char buffer[256]; if(sprintf(buffer, "%zd", (size_t)123) < 0) return 1; if (strcmp(buffer, "123")) return 1; if (sprintf(buffer, "%zd", (Py_ssize_t)-123) < 0) return 1; if (strcmp(buffer, "-123")) return 1; return 0; } ]])], [ac_cv_have_size_t_format=yes], [ac_cv_have_size_t_format=no], [ac_cv_have_size_t_format="cross -- assuming yes" ])]) if test "$ac_cv_have_size_t_format" != no ; then AC_DEFINE(PY_FORMAT_SIZE_T, "z", [Define to printf format modifier for Py_ssize_t]) fi AC_CHECK_TYPE(socklen_t,, AC_DEFINE(socklen_t,int, [Define to `int' if does not define.]),[ #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif ]) AC_CACHE_CHECK([for broken mbstowcs], [ac_cv_broken_mbstowcs], AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include int main() { size_t len = -1; const char *str = "text"; len = mbstowcs(NULL, str, 0); return (len != 4); } ]])], [ac_cv_broken_mbstowcs=no], [ac_cv_broken_mbstowcs=yes], [ac_cv_broken_mbstowcs=no])) if test "$ac_cv_broken_mbstowcs" = yes then AC_DEFINE(HAVE_BROKEN_MBSTOWCS, 1, [Define if mbstowcs(NULL, "text", 0) does not return the number of wide chars that would be converted.]) fi # Check for --with-computed-gotos AC_MSG_CHECKING(for --with-computed-gotos) AC_ARG_WITH(computed-gotos, AS_HELP_STRING([--with-computed-gotos], [enable computed gotos in evaluation loop (enabled by default on supported compilers)]), [ if test "$withval" = yes then AC_DEFINE(USE_COMPUTED_GOTOS, 1, [Define if you want to use computed gotos in ceval.c.]) AC_MSG_RESULT(yes) fi if test "$withval" = no then AC_DEFINE(USE_COMPUTED_GOTOS, 0, [Define if you want to use computed gotos in ceval.c.]) AC_MSG_RESULT(no) fi ], [AC_MSG_RESULT(no value specified)]) AC_CACHE_CHECK([whether $CC supports computed gotos], [ac_cv_computed_gotos], AC_RUN_IFELSE([AC_LANG_SOURCE([[[ int main(int argc, char **argv) { static void *targets[1] = { &&LABEL1 }; goto LABEL2; LABEL1: return 0; LABEL2: goto *targets[0]; return 1; } ]]])], [ac_cv_computed_gotos=yes], [ac_cv_computed_gotos=no], [if test "${with_computed_gotos+set}" = set; then ac_cv_computed_gotos="$with_computed_gotos -- configured --with(out)-computed-gotos" else ac_cv_computed_gotos=no fi])) case "$ac_cv_computed_gotos" in yes*) AC_DEFINE(HAVE_COMPUTED_GOTOS, 1, [Define if the C compiler supports computed gotos.]) esac case $ac_sys_system in AIX*) AC_DEFINE(HAVE_BROKEN_PIPE_BUF, 1, [Define if the system reports an invalid PIPE_BUF value.]) ;; esac AC_SUBST(THREADHEADERS) for h in `(cd $srcdir;echo Python/thread_*.h)` do THREADHEADERS="$THREADHEADERS \$(srcdir)/$h" done AC_SUBST(SRCDIRS) SRCDIRS="\ Modules \ Modules/_blake2 \ Modules/_ctypes \ Modules/_decimal \ Modules/_decimal/libmpdec \ Modules/_io \ Modules/_multiprocessing \ Modules/_sha3 \ Modules/_sqlite \ Modules/_xxtestfuzz \ Modules/cjkcodecs \ Modules/expat \ Objects \ Parser \ Programs \ Python \ Python/deepfreeze" AC_MSG_CHECKING(for build directories) for dir in $SRCDIRS; do if test ! -d $dir; then mkdir $dir fi done AC_MSG_RESULT(done) # Availability of -O2: AC_CACHE_CHECK([for -O2], [ac_cv_compile_o2], [ saved_cflags="$CFLAGS" CFLAGS="-O2" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], [ac_cv_compile_o2=yes], [ac_cv_compile_o2=no]) CFLAGS="$saved_cflags" ]) # _FORTIFY_SOURCE wrappers for memmove and bcopy are incorrect: # http://sourceware.org/ml/libc-alpha/2010-12/msg00009.html AC_MSG_CHECKING(for glibc _FORTIFY_SOURCE/memmove bug) saved_cflags="$CFLAGS" CFLAGS="-O2 -D_FORTIFY_SOURCE=2" if test "$ac_cv_compile_o2" = no; then CFLAGS="" fi AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #include void foo(void *p, void *q) { memmove(p, q, 19); } int main() { char a[32] = "123456789000000000"; foo(&a[9], a); if (strcmp(a, "123456789123456789000000000") != 0) return 1; foo(a, &a[9]); if (strcmp(a, "123456789000000000") != 0) return 1; return 0; } ]])], [have_glibc_memmove_bug=no], [have_glibc_memmove_bug=yes], [have_glibc_memmove_bug=undefined]) CFLAGS="$saved_cflags" AC_MSG_RESULT($have_glibc_memmove_bug) if test "$have_glibc_memmove_bug" = yes; then AC_DEFINE(HAVE_GLIBC_MEMMOVE_BUG, 1, [Define if glibc has incorrect _FORTIFY_SOURCE wrappers for memmove and bcopy.]) fi if test "$ac_cv_gcc_asm_for_x87" = yes; then # Some versions of gcc miscompile inline asm: # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46491 # http://gcc.gnu.org/ml/gcc/2010-11/msg00366.html case $CC in *gcc*) AC_MSG_CHECKING(for gcc ipa-pure-const bug) saved_cflags="$CFLAGS" CFLAGS="-O2" AC_RUN_IFELSE([AC_LANG_SOURCE([[ __attribute__((noinline)) int foo(int *p) { int r; asm ( "movl \$6, (%1)\n\t" "xorl %0, %0\n\t" : "=r" (r) : "r" (p) : "memory" ); return r; } int main() { int p = 8; if ((foo(&p) ? : p) != 6) return 1; return 0; } ]])], [have_ipa_pure_const_bug=no], [have_ipa_pure_const_bug=yes], [have_ipa_pure_const_bug=undefined]) CFLAGS="$saved_cflags" AC_MSG_RESULT($have_ipa_pure_const_bug) if test "$have_ipa_pure_const_bug" = yes; then AC_DEFINE(HAVE_IPA_PURE_CONST_BUG, 1, [Define if gcc has the ipa-pure-const bug.]) fi ;; esac fi # Check for stdatomic.h AC_CACHE_CHECK([for stdatomic.h], [ac_cv_header_stdatomic_h], [ AC_LINK_IFELSE( [ AC_LANG_SOURCE([[ #include atomic_int int_var; atomic_uintptr_t uintptr_var; int main() { atomic_store_explicit(&int_var, 5, memory_order_relaxed); atomic_store_explicit(&uintptr_var, 0, memory_order_relaxed); int loaded_value = atomic_load_explicit(&int_var, memory_order_seq_cst); return 0; } ]]) ],[ac_cv_header_stdatomic_h=yes],[ac_cv_header_stdatomic_h=no]) ]) AS_VAR_IF([ac_cv_header_stdatomic_h], [yes], [ AC_DEFINE(HAVE_STD_ATOMIC, 1, [Has stdatomic.h with atomic_int and atomic_uintptr_t]) ]) # Check for GCC >= 4.7 and clang __atomic builtin functions AC_CACHE_CHECK([for builtin __atomic_load_n and __atomic_store_n functions], [ac_cv_builtin_atomic], [ AC_LINK_IFELSE( [ AC_LANG_SOURCE([[ int val; int main() { __atomic_store_n(&val, 1, __ATOMIC_SEQ_CST); (void)__atomic_load_n(&val, __ATOMIC_SEQ_CST); return 0; } ]]) ],[ac_cv_builtin_atomic=yes],[ac_cv_builtin_atomic=no]) ]) AS_VAR_IF([ac_cv_builtin_atomic], [yes], [ AC_DEFINE(HAVE_BUILTIN_ATOMIC, 1, [Has builtin __atomic_load_n() and __atomic_store_n() functions]) ]) # ensurepip option AC_MSG_CHECKING(for ensurepip) AC_ARG_WITH(ensurepip, [AS_HELP_STRING([--with-ensurepip@<:@=install|upgrade|no@:>@], ["install" or "upgrade" using bundled pip (default is upgrade)])], [], [with_ensurepip=upgrade]) AS_CASE($with_ensurepip, [yes|upgrade],[ENSUREPIP=upgrade], [install],[ENSUREPIP=install], [no],[ENSUREPIP=no], [AC_MSG_ERROR([--with-ensurepip=upgrade|install|no])]) AC_MSG_RESULT($ENSUREPIP) AC_SUBST(ENSUREPIP) # check if the dirent structure of a d_type field and DT_UNKNOWN is defined AC_CACHE_CHECK([if the dirent structure of a d_type field], [ac_cv_dirent_d_type], [ AC_LINK_IFELSE( [ AC_LANG_SOURCE([[ #include int main() { struct dirent entry; return entry.d_type == DT_UNKNOWN; } ]]) ],[ac_cv_dirent_d_type=yes],[ac_cv_dirent_d_type=no]) ]) AS_VAR_IF([ac_cv_dirent_d_type], [yes], [ AC_DEFINE(HAVE_DIRENT_D_TYPE, 1, [Define to 1 if the dirent structure has a d_type field]) ]) # check if the Linux getrandom() syscall is available AC_CACHE_CHECK([for the Linux getrandom() syscall], [ac_cv_getrandom_syscall], [ AC_LINK_IFELSE( [ AC_LANG_SOURCE([[ #include #include #include int main() { char buffer[1]; const size_t buflen = sizeof(buffer); const int flags = GRND_NONBLOCK; /* ignore the result, Python checks for ENOSYS and EAGAIN at runtime */ (void)syscall(SYS_getrandom, buffer, buflen, flags); return 0; } ]]) ],[ac_cv_getrandom_syscall=yes],[ac_cv_getrandom_syscall=no]) ]) AS_VAR_IF([ac_cv_getrandom_syscall], [yes], [ AC_DEFINE(HAVE_GETRANDOM_SYSCALL, 1, [Define to 1 if the Linux getrandom() syscall is available]) ]) # check if the getrandom() function is available # the test was written for the Solaris function of AC_CACHE_CHECK([for the getrandom() function], [ac_cv_func_getrandom], [ AC_LINK_IFELSE( [ AC_LANG_SOURCE([[ #include int main() { char buffer[1]; const size_t buflen = sizeof(buffer); const int flags = 0; /* ignore the result, Python checks for ENOSYS at runtime */ (void)getrandom(buffer, buflen, flags); return 0; } ]]) ],[ac_cv_func_getrandom=yes],[ac_cv_func_getrandom=no]) ]) AS_VAR_IF([ac_cv_func_getrandom], [yes], [ AC_DEFINE(HAVE_GETRANDOM, 1, [Define to 1 if the getrandom() function is available]) ]) # checks for POSIX shared memory, used by Modules/_multiprocessing/posixshmem.c # shm_* may only be available if linking against librt save_LIBS="$LIBS" save_includes_default="$ac_includes_default" AC_SEARCH_LIBS(shm_open, rt) if test "$ac_cv_search_shm_open" = "-lrt"; then AC_DEFINE(SHM_NEEDS_LIBRT, 1, [Define to 1 if you must link with -lrt for shm_open().]) fi AC_CHECK_HEADERS(sys/mman.h) # temporarily override ac_includes_default for AC_CHECK_FUNCS below ac_includes_default="\ ${ac_includes_default} #ifndef __cplusplus # ifdef HAVE_SYS_MMAN_H # include # endif #endif " AC_CHECK_FUNCS([shm_open shm_unlink]) # we don't want to link with librt always, restore LIBS LIBS="$save_LIBS" ac_includes_default="$save_includes_default" # Check for usable OpenSSL AX_CHECK_OPENSSL([have_openssl=yes],[have_openssl=no]) # rpath to libssl and libcrypto AC_MSG_CHECKING(for --with-openssl-rpath) AC_ARG_WITH(openssl-rpath, AS_HELP_STRING([--with-openssl-rpath=@<:@DIR|auto|no@:>@], [Set runtime library directory (rpath) for OpenSSL libraries, no (default): don't set rpath, auto: auto-detect rpath from --with-openssl and pkg-config, DIR: set an explicit rpath ]), [], [with_openssl_rpath=no] ) AS_CASE($with_openssl_rpath, [auto|yes],[OPENSSL_RPATH=auto], [no],[OPENSSL_RPATH=], [AS_IF( [test -d "$with_openssl_rpath"], [OPENSSL_RPATH="$with_openssl_rpath"], AC_MSG_ERROR([--with-openssl-rpath "$with_openssl_rpath" is not a directory])) ] ) AC_MSG_RESULT($OPENSSL_RPATH) AC_SUBST([OPENSSL_RPATH]) # check if OpenSSL libraries work as expected AC_CACHE_CHECK([whether OpenSSL provides required APIs], [ac_cv_working_openssl], [ save_LIBS="$LIBS" save_CFLAGS="$CFLAGS" save_LDFLAGS="$LDFLAGS" LIBS="$LIBS $OPENSSL_LIBS" CFLAGS="$CFLAGS_NODIST $OPENSSL_INCLUDES" LDFLAGS="$LDFLAGS $OPENSSL_LDFLAGS" AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include #include #include #if OPENSSL_VERSION_NUMBER < 0x10101000L #error "OpenSSL >= 1.1.1 is required" #endif static void keylog_cb(const SSL *ssl, const char *line) {} ]], [[ /* SSL APIs */ SSL_CTX *ctx = SSL_CTX_new(TLS_client_method()); SSL_CTX_set_keylog_callback(ctx, keylog_cb); SSL *ssl = SSL_new(ctx); X509_VERIFY_PARAM *param = SSL_get0_param(ssl); X509_VERIFY_PARAM_set1_host(param, "python.org", 0); SSL_free(ssl); SSL_CTX_free(ctx); /* hashlib APIs */ OBJ_nid2sn(NID_md5); OBJ_nid2sn(NID_sha1); OBJ_nid2sn(NID_sha3_512); OBJ_nid2sn(NID_blake2b512); EVP_PBE_scrypt(NULL, 0, NULL, 0, 2, 8, 1, 0, NULL, 0); ]])], [ac_cv_working_openssl=yes], [ac_cv_working_openssl=no]) LIBS="$save_LIBS" CFLAGS="$save_CFLAGS" LDFLAGS="$save_LDFLAGS" ]) # ssl module default cipher suite string AH_TEMPLATE(PY_SSL_DEFAULT_CIPHERS, [Default cipher suites list for ssl module. 1: Python's preferred selection, 2: leave OpenSSL defaults untouched, 0: custom string]) AH_TEMPLATE(PY_SSL_DEFAULT_CIPHER_STRING, [Cipher suite string for PY_SSL_DEFAULT_CIPHERS=0] ) AC_MSG_CHECKING(for --with-ssl-default-suites) AC_ARG_WITH(ssl-default-suites, AS_HELP_STRING([--with-ssl-default-suites=@<:@python|openssl|STRING@:>@], [override default cipher suites string, python: use Python's preferred selection (default), openssl: leave OpenSSL's defaults untouched, STRING: use a custom string, python and STRING also set TLS 1.2 as minimum TLS version]), [ AC_MSG_RESULT($withval) case "$withval" in python) AC_DEFINE(PY_SSL_DEFAULT_CIPHERS, 1) ;; openssl) AC_DEFINE(PY_SSL_DEFAULT_CIPHERS, 2) ;; *) AC_DEFINE(PY_SSL_DEFAULT_CIPHERS, 0) AC_DEFINE_UNQUOTED(PY_SSL_DEFAULT_CIPHER_STRING, "$withval") ;; esac ], [ AC_MSG_RESULT(python) AC_DEFINE(PY_SSL_DEFAULT_CIPHERS, 1) ]) # builtin hash modules default_hashlib_hashes="md5,sha1,sha256,sha512,sha3,blake2" AC_DEFINE([PY_BUILTIN_HASHLIB_HASHES], [], [enabled builtin hash modules] ) AC_MSG_CHECKING(for --with-builtin-hashlib-hashes) AC_ARG_WITH(builtin-hashlib-hashes, AS_HELP_STRING([--with-builtin-hashlib-hashes=md5,sha1,sha256,sha512,sha3,blake2], [builtin hash modules, md5, sha1, sha256, sha512, sha3 (with shake), blake2]), [ AS_CASE([$with_builtin_hashlib_hashes], [yes], [with_builtin_hashlib_hashes=$default_hashlib_hashes], [no], [with_builtin_hashlib_hashes=""] ) ], [with_builtin_hashlib_hashes=$default_hashlib_hashes]) AC_MSG_RESULT($with_builtin_hashlib_hashes) AC_DEFINE_UNQUOTED(PY_BUILTIN_HASHLIB_HASHES, "$with_builtin_hashlib_hashes") as_save_IFS=$IFS IFS=, for builtin_hash in $with_builtin_hashlib_hashes; do AS_CASE($builtin_hash, [md5], [with_builtin_md5=yes], [sha1], [with_builtin_sha1=yes], [sha256], [with_builtin_sha256=yes], [sha512], [with_builtin_sha512=yes], [sha3], [with_builtin_sha3=yes], [blake2], [with_builtin_blake2=yes] ) done IFS=$as_save_IFS # --with-experimental-isolated-subinterpreters AH_TEMPLATE(EXPERIMENTAL_ISOLATED_SUBINTERPRETERS, [Better isolate subinterpreters, experimental build mode.]) AC_MSG_CHECKING(for --with-experimental-isolated-subinterpreters) AC_ARG_WITH(experimental-isolated-subinterpreters, AS_HELP_STRING([--with-experimental-isolated-subinterpreters], [better isolate subinterpreters, experimental build mode (default is no)]), [ if test "$withval" != no then AC_MSG_RESULT(yes); AC_DEFINE(EXPERIMENTAL_ISOLATED_SUBINTERPRETERS) else AC_MSG_RESULT(no); fi], [AC_MSG_RESULT(no)]) # --with-static-libpython STATIC_LIBPYTHON=1 AC_MSG_CHECKING(for --with-static-libpython) AC_ARG_WITH(static-libpython, AS_HELP_STRING([--without-static-libpython], [do not build libpythonMAJOR.MINOR.a and do not install python.o (default is yes)]), [ if test "$withval" = no then AC_MSG_RESULT(no); STATIC_LIBPYTHON=0 else AC_MSG_RESULT(yes); fi], [AC_MSG_RESULT(yes)]) LIBRARY_DEPS='$(PY3LIBRARY) $(EXPORTSYMS)' if test "$PY_ENABLE_SHARED" = 1 || test "$enable_framework" ; then LIBRARY_DEPS="\$(LDLIBRARY) $LIBRARY_DEPS" if test "$STATIC_LIBPYTHON" = 1; then LIBRARY_DEPS="\$(LIBRARY) $LIBRARY_DEPS" fi else LIBRARY_DEPS="\$(LIBRARY) $LIBRARY_DEPS" fi AC_SUBST(STATIC_LIBPYTHON) AC_SUBST(LIBRARY_DEPS) # Check whether to disable test modules. Once set, setup.py will not build # test extension modules and "make install" will not install test suites. AC_MSG_CHECKING(for --disable-test-modules) AC_ARG_ENABLE(test-modules, AS_HELP_STRING([--disable-test-modules], [don't build nor install test modules])) if test "$enable_test_modules" = no; then TEST_MODULES=no AC_MSG_RESULT(yes) else TEST_MODULES=yes AC_MSG_RESULT(no) fi AC_SUBST(TEST_MODULES) dnl Modules that are not available on some platforms dnl AIX has shadow passwords, but access is not via getspent() dnl VxWorks does not provide crypt() function AS_CASE([$ac_sys_system], [AIX], [py_stdlib_not_available="_scproxy spwd"], [VxWorks*], [py_stdlib_not_available="_scproxy _crypt termios grp"], [Darwin], [py_stdlib_not_available="ossaudiodev spwd"], [CYGWIN*], [py_stdlib_not_available="_scproxy nis"], [QNX*], [py_stdlib_not_available="_scproxy nis"], [FreeBSD*], [py_stdlib_not_available="_scproxy spwd"], [py_stdlib_not_available="_scproxy"] ) dnl _MODULE_BLOCK_ADD([VAR], [VALUE]) dnl internal: adds $1=quote($2) to MODULE_BLOCK AC_DEFUN([_MODULE_BLOCK_ADD], [AS_VAR_APPEND([MODULE_BLOCK], ["$1=_AS_QUOTE([$2])$as_nl"])]) MODULE_BLOCK= dnl Check for stdlib extension modules dnl PY_STDLIB_MOD([NAME], [ENABLED-TEST], [SUPPORTED-TEST], [CFLAGS], [LDFLAGS]) dnl sets MODULE_$NAME based on $py_stdlib_not_available, ENABLED-TEST, dnl and SUPPORTED_TEST. ENABLED-TEST and SUPPORTED-TEST default to true if dnl empty. dnl n/a: $NAME in $py_stdlib_not_available (not available on platform) dnl yes: enabled and supported dnl missing: enabled and not supported dnl disabled: not enabled dnl sets MODULE_$NAME_CFLAGS and MODULE_$NAME_LDFLAGS AC_DEFUN([PY_STDLIB_MOD], [ AC_MSG_CHECKING([for stdlib extension module $1]) m4_pushdef([modcond], [MODULE_]m4_toupper([$1]))dnl m4_pushdef([modstate], [py_cv_module_$1])dnl AS_CASE([$py_stdlib_not_available], [*$1*], [modstate=n/a], [ AS_IF(m4_ifblank([$2], [true], [$2]), [AS_IF([m4_ifblank([$3], [true], [$3])], [modstate=yes], [modstate=missing])], [modstate=disabled] ) ] ) _MODULE_BLOCK_ADD(modcond, [$modstate]) AS_VAR_IF([modstate], [yes], [ _MODULE_BLOCK_ADD([MODULE_]m4_toupper([$1])[_CFLAGS], [$4]) _MODULE_BLOCK_ADD([MODULE_]m4_toupper([$1])[_LDFLAGS], [$5]) AM_CONDITIONAL(modcond, [true]) ], [ AM_CONDITIONAL(modcond, [false]) ]) AC_MSG_RESULT([$modstate]) m4_popdef([modcond])dnl m4_popdef([modstate])dnl ]) dnl Define simple, always enabled stdlib extension module dnl PY_STDLIB_MOD_SIMPLE([NAME], [CFLAGS], [LDFLAGS]) dnl cflags and ldflags are optional AC_DEFUN([PY_STDLIB_MOD_SIMPLE], [ m4_pushdef([modcond], [MODULE_]m4_toupper([$1]))dnl AM_CONDITIONAL(modcond, [true]) m4_ifval([$2], [ _MODULE_BLOCK_ADD([MODULE_]m4_toupper([$1])[_CFLAGS], [$2]) ]) m4_ifval([$3], [ _MODULE_BLOCK_ADD([MODULE_]m4_toupper([$1])[_LDFLAGS], [$3]) ]) m4_popdef([modcond])dnl ]) dnl static modules in Modules/Setup.bootstrap PY_STDLIB_MOD_SIMPLE([_io], [-I\$(srcdir)/Modules/_io], []) PY_STDLIB_MOD_SIMPLE([time], [], [$TIMEMODULE_LIB]) dnl always enabled extension modules PY_STDLIB_MOD_SIMPLE([_datetime], [], [$TIMEMODULE_LIB $LIBM]) dnl platform specific extensions PY_STDLIB_MOD([ossaudiodev], [], [test "$ac_cv_header_linux_soundcard_h" = yes -o "$ac_cv_header_sys_soundcard_h" = yes]) dnl _elementtree loads libexpat via CAPI hook in pyexpat PY_STDLIB_MOD([pyexpat], [], [], [$LIBEXPAT_CFLAGS], [$LIBEXPAT_LDFLAGS]) PY_STDLIB_MOD([_elementtree], [], [], [$LIBEXPAT_CFLAGS], []) dnl By default we always compile these even when OpenSSL is available dnl (issue #14693). The modules are small. PY_STDLIB_MOD([_md5], [test "$with_builtin_md5" = yes]) PY_STDLIB_MOD([_sha1], [test "$with_builtin_sha1" = yes]) PY_STDLIB_MOD([_sha256], [test "$with_builtin_sha256" = yes]) PY_STDLIB_MOD([_sha512], [test "$with_builtin_sha512" = yes]) PY_STDLIB_MOD([_sha3], [test "$with_builtin_sha3" = yes]) PY_STDLIB_MOD([_blake2], [test "$with_builtin_blake2" = yes]) PY_STDLIB_MOD([_decimal], [], [], [$LIBMPDEC_CFLAGS], [$LIBMPDEC_LDFLAGS]) PY_STDLIB_MOD([_sqlite3], [test "$have_sqlite3" = "yes"], [test "$have_supported_sqlite3" = "yes"], [$LIBSQLITE3_CFLAGS], [$LIBSQLITE3_LIBS]) # substitute multiline block, must come after last PY_STDLIB_MOD() AC_SUBST([MODULE_BLOCK]) # generate output files AC_CONFIG_FILES(Makefile.pre Misc/python.pc Misc/python-embed.pc Misc/python-config.sh) AC_CONFIG_FILES([Modules/Setup.stdlib]) AC_CONFIG_FILES([Modules/ld_so_aix], [chmod +x Modules/ld_so_aix]) AC_OUTPUT echo "creating Modules/Setup.local" >&AS_MESSAGE_FD if test ! -f Modules/Setup.local then echo "# Edit this file for local setup changes" >Modules/Setup.local fi echo "creating Makefile" >&AS_MESSAGE_FD $SHELL $srcdir/Modules/makesetup -c $srcdir/Modules/config.c.in \ -s Modules \ Modules/Setup.local $srcdir/Modules/Setup.bootstrap $srcdir/Modules/Setup mv config.c Modules if test -z "$PKG_CONFIG"; then echo "" >&AS_MESSAGE_FD echo "pkg-config is missing. Some dependencies may not be detected correctly." >&AS_MESSAGE_FD fi if test "$Py_OPT" = 'false' -a "$Py_DEBUG" != 'true'; then echo "" >&AS_MESSAGE_FD echo "" >&AS_MESSAGE_FD echo "If you want a release build with all stable optimizations active (PGO, etc)," >&AS_MESSAGE_FD echo "please run ./configure --enable-optimizations" >&AS_MESSAGE_FD echo "" >&AS_MESSAGE_FD echo "" >&AS_MESSAGE_FD fi