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| author | jan.nijtmans <nijtmans@users.sourceforge.net> | 2012-04-02 09:48:06 (GMT) |
|---|---|---|
| committer | jan.nijtmans <nijtmans@users.sourceforge.net> | 2012-04-02 09:48:06 (GMT) |
| commit | 6fb70434886c81f401e6941b84adcfa80454dc39 (patch) | |
| tree | c1c388415687a10fe7e876469402a54d53ff3939 /unix/tcl.m4 | |
| parent | f5388f87a1561b44ad0b3ceaefa06ba58125adbe (diff) | |
| parent | 33bde427645f8931d8634cdba1819b5e66a69bd0 (diff) | |
| download | tk-6fb70434886c81f401e6941b84adcfa80454dc39.zip tk-6fb70434886c81f401e6941b84adcfa80454dc39.tar.gz tk-6fb70434886c81f401e6941b84adcfa80454dc39.tar.bz2 | |
[Bug 3511806] Compiler checks too early
(autoconf still to be run!)
Diffstat (limited to 'unix/tcl.m4')
| -rw-r--r-- | unix/tcl.m4 | 41 |
1 files changed, 37 insertions, 4 deletions
diff --git a/unix/tcl.m4 b/unix/tcl.m4 index cb6c842..74a577d 100644 --- a/unix/tcl.m4 +++ b/unix/tcl.m4 @@ -1220,17 +1220,30 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [ CC_SEARCH_FLAGS="" LD_SEARCH_FLAGS="" ;; - CYGWIN_*) + CYGWIN_*|MINGW32*) SHLIB_CFLAGS="" SHLIB_LD='${CC} -shared' SHLIB_SUFFIX=".dll" - DL_OBJS="tclLoadDl.o" + DL_OBJS="tclLoadDl.o tclWinError.o" DL_LIBS="-ldl" CC_SEARCH_FLAGS="" LD_SEARCH_FLAGS="" TCL_NEEDS_EXP_FILE=1 TCL_EXPORT_FILE_SUFFIX='${VERSION}\$\{DBGX\}.dll.a' TCL_SHLIB_LD_EXTRAS='-Wl,--out-implib,$[@].a' + AC_CACHE_CHECK(for Cygwin version of gcc, + ac_cv_cygwin, + AC_TRY_COMPILE([ + #ifdef __CYGWIN__ + #error cygwin + #endif + ], [], + ac_cv_cygwin=no, + ac_cv_cygwin=yes) + ) + if test "$ac_cv_cygwin" = "no"; then + AC_MSG_ERROR([${CC} is not a cygwin compiler.]) + fi ;; dgux*) SHLIB_CFLAGS="-K PIC" @@ -2058,7 +2071,7 @@ dnl # preprocessing tests use only CPPFLAGS. case $system in AIX-*) ;; BSD/OS*) ;; - CYGWIN_*) ;; + CYGWIN_*|MINGW32_*) ;; IRIX*) ;; NetBSD-*|FreeBSD-*|OpenBSD-*) ;; Darwin-*) ;; @@ -2115,6 +2128,25 @@ dnl # preprocessing tests use only CPPFLAGS. TCL_LIBS="${DL_LIBS} ${LIBS} ${MATH_LIBS}"]) AC_SUBST(TCL_LIBS) + # See if the compiler supports casting to a union type. + # This is used to stop gcc from printing a compiler + # warning when initializing a union member. + + AC_CACHE_CHECK(for cast to union support, + tcl_cv_cast_to_union, + AC_TRY_COMPILE([], + [ + union foo { int i; double d; }; + union foo f = (union foo) (int) 0; + ], + tcl_cv_cast_to_union=yes, + tcl_cv_cast_to_union=no) + ) + if test "$tcl_cv_cast_to_union" = "yes"; then + AC_DEFINE(HAVE_CAST_TO_UNION, 1, + [Defined when compiler supports casting to union type.]) + fi + # FIXME: This subst was left in only because the TCL_DL_LIBS # entry in tclConfig.sh uses it. It is not clear why someone # would use TCL_DL_LIBS instead of TCL_LIBS. @@ -3264,7 +3296,8 @@ AC_DEFUN([SC_TCL_IPV6],[ #include <netdb.h> ]]) if test "x$NEED_FAKE_RFC2553" = "x1"; then - AC_DEFINE(NEED_FAKE_RFC2553) + AC_DEFINE([NEED_FAKE_RFC2553], 1, + [Use compat implementation of getaddrinfo() and friends]) AC_LIBOBJ([fake-rfc2553]) AC_CHECK_FUNC(strlcpy) fi |