diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 99 |
1 files changed, 58 insertions, 41 deletions
diff --git a/configure.ac b/configure.ac index c5e456f..b8f1531 100644 --- a/configure.ac +++ b/configure.ac @@ -538,7 +538,7 @@ AC_SUBST(HL_FOR) HL_FOR="" AC_MSG_CHECKING([if high level library is enabled]) AC_ARG_ENABLE([hl], [AS_HELP_STRING([--enable-hl], - [Enable the high-level library [default=yes]])], + [Enable the high level library [default=yes]])], [HDF5_HL=$enableval], [HDF5_HL=yes]) @@ -1596,9 +1596,15 @@ AC_CACHE_SAVE AC_MSG_CHECKING([for thread safe support]) AC_ARG_ENABLE([threadsafe], [AS_HELP_STRING([--enable-threadsafe], - [Enable thread-safe capability])], + [Enable thread-safe capability. This will disable the high-level library. + You can override this behavior by specifying --enable-hl and --enable-unsupported. + [default=no]])], [THREADSAFE=$enableval]) +## NOTE: The high-level, C++, and Fortran interfaces are not compatible +## with the thread-safety option because the lock is not hoisted +## into the higher-level API calls. + ## The --enable-threadsafe flag is not compatible with --enable-cxx. ## If the user tried to specify both flags, throw an error, unless ## they also provided the --enable-unsupported flag. @@ -1608,7 +1614,7 @@ if test "X${ALLOW_UNSUPPORTED}" != "Xyes"; then fi fi -## --enable-threadsafe is also incompatible with --enable-fortran, unless +## --enable-threadsafe is also incompatible with --enable-fortran unless ## --enable-unsupported has been specified on the configure line. if test "X${ALLOW_UNSUPPORTED}" != "Xyes"; then if test "X${HDF_FORTRAN}" = "Xyes" -a "X${enable_threadsafe}" = "Xyes"; then @@ -1616,6 +1622,7 @@ if test "X${ALLOW_UNSUPPORTED}" != "Xyes"; then fi fi + case "X-$THREADSAFE" in X-|X-no) AC_MSG_RESULT([no]) @@ -1634,32 +1641,31 @@ if test "X$THREADSAFE" = "Xyes"; then AC_DEFINE([HAVE_THREADSAFE], [1], [Define if we have thread safe support]) ## ---------------------------------------------------------------------- - ## Is the pthreads library present? It has a header file `pthread.h' and + ## Is the Pthreads library present? It has a header file `pthread.h' and ## a library `-lpthread' and their locations might be specified with the ## `--with-pthread' command-line switch. The value is an include path ## and/or a library path. If the library path is specified then it must ## be preceded by a comma. ## ## Thread-safety in HDF5 only uses Pthreads via configure, so the - ## default is "yes", though this only has an effect when + ## default is "check", though this only has an effect when ## --enable-threadsafe is specified. AC_SUBST([HAVE_PTHREAD]) HAVE_PTHREAD=yes AC_ARG_WITH([pthread], [AS_HELP_STRING([--with-pthread=DIR], - [Specify alternative path to Pthreads library when thread-safe capability is built])],, - [withval=yes]) + [Specify alternative path to Pthreads library when + thread-safe capability is built.])],, + [withval=check]) case "$withval" in - yes) + check | yes) AC_CHECK_HEADERS([pthread.h],, [unset HAVE_PTHREAD]) if test "x$HAVE_PTHREAD" = "xyes"; then AC_CHECK_LIB([pthread], [pthread_self],, [unset HAVE_PTHREAD]) fi ;; no) - AC_MSG_CHECKING([for pthread]) - AC_MSG_RESULT([suppressed]) - unset HAVE_PTHREAD + AC_MSG_ERROR([Must use Pthreads with thread safety]) ;; *) case "$withval" in @@ -1708,6 +1714,47 @@ if test "X$THREADSAFE" = "Xyes"; then fi ;; esac + + ## ---------------------------------------------------------------------- + ## Check if pthread_attr_setscope(&attribute, PTHREAD_SCOPE_SYSTEM) + ## is supported on this system + ## + ## Unfortunately, this probably needs to be an AC_RUN_IFELSE since + ## it's impossible to determine if PTHREAD_SCOPE_SYSTEM is + ## supported a priori. POSIX.1-2001 requires that a conformant + ## system need only support one of SYSTEM or PROCESS scopes. + ## + ## For cross-compiling, we've added a pessimistic 'no'. You can + ## hand-hack the config file if you know otherwise. + AC_MSG_CHECKING([Pthreads supports system scope]) + AC_CACHE_VAL([hdf5_cv_system_scope_threads], + [AC_RUN_IFELSE( + [AC_LANG_PROGRAM([ + #if STDC_HEADERS + #include <stdlib.h> + #include <pthread.h> + #endif + ],[ + int main(void) + { + pthread_attr_t attribute; + int ret; + + pthread_attr_init(&attribute); + ret=pthread_attr_setscope(&attribute, PTHREAD_SCOPE_SYSTEM); + exit(ret==0 ? 0 : 1); + } + ])] + , [hdf5_cv_system_scope_threads=yes], [hdf5_cv_system_scope_threads=no], [hdf5_cv_system_scope_threads=no])]) + + if test ${hdf5_cv_system_scope_threads} = "yes"; then + AC_DEFINE([SYSTEM_SCOPE_THREADS], [1], + [Define if your system supports pthread_attr_setscope(&attribute, PTHREAD_SCOPE_SYSTEM) call.]) + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + AC_MSG_NOTICE([Always 'no' if cross-compiling. Edit the config file if your platform supports pthread_attr_setscope(&attribute, PTHREAD_SCOPE_SYSTEM).]) + fi fi ## ---------------------------------------------------------------------- @@ -1962,36 +2009,6 @@ AC_MSG_RESULT([%${hdf5_cv_printf_ll}d and %${hdf5_cv_printf_ll}u]) AC_DEFINE_UNQUOTED([PRINTF_LL_WIDTH], ["$hdf5_cv_printf_ll"], [Width for printf() for type `long long' or `__int64', use `ll']) -## ---------------------------------------------------------------------- -## Check if pthread_attr_setscope(&attribute, PTHREAD_SCOPE_SYSTEM) -## is supported on this system -## -AC_MSG_CHECKING([Threads support system scope]) -AC_CACHE_VAL([hdf5_cv_system_scope_threads], - [AC_TRY_RUN([ - #if STDC_HEADERS - #include <stdlib.h> - #include <pthread.h> - #endif - - int main(void) - { - pthread_attr_t attribute; - int ret; - - pthread_attr_init(&attribute); - ret=pthread_attr_setscope(&attribute, PTHREAD_SCOPE_SYSTEM); - exit(ret==0 ? 0 : 1); - } - ], [hdf5_cv_system_scope_threads=yes], [hdf5_cv_system_scope_threads=no],)]) - -if test ${hdf5_cv_system_scope_threads} = "yes"; then - AC_DEFINE([SYSTEM_SCOPE_THREADS], [1], - [Define if your system supports pthread_attr_setscope(&attribute, PTHREAD_SCOPE_SYSTEM) call.]) - AC_MSG_RESULT([yes]) -else - AC_MSG_RESULT([no]) -fi ## ---------------------------------------------------------------------- ## Turn on debugging by setting compiler flags |