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-rw-r--r--unix/tcl.m439
1 files changed, 35 insertions, 4 deletions
diff --git a/unix/tcl.m4 b/unix/tcl.m4
index f6e002e..222c375 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -738,6 +738,7 @@ AC_DEFUN([SC_ENABLE_SYMBOLS], [
if test "$tcl_ok" = "no"; then
CFLAGS_DEFAULT='$(CFLAGS_OPTIMIZE)'
LDFLAGS_DEFAULT='$(LDFLAGS_OPTIMIZE)'
+ AC_DEFINE(NDEBUG, 1, [Is no debugging enabled?])
AC_MSG_RESULT([no])
AC_DEFINE(TCL_CFG_OPTIMIZED, 1, [Is this an optimized build?])
else
@@ -749,8 +750,6 @@ AC_DEFUN([SC_ENABLE_SYMBOLS], [
fi
AC_SUBST(CFLAGS_DEFAULT)
AC_SUBST(LDFLAGS_DEFAULT)
- ### FIXME: Surely TCL_CFG_DEBUG should be set to whether we're debugging?
- AC_DEFINE(TCL_CFG_DEBUG, 1, [Is debugging enabled?])
if test "$tcl_ok" = "mem" -o "$tcl_ok" = "all"; then
AC_DEFINE(TCL_MEM_DEBUG, 1, [Is memory debugging enabled?])
@@ -1220,7 +1219,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
CC_SEARCH_FLAGS=""
LD_SEARCH_FLAGS=""
;;
- CYGWIN_*)
+ CYGWIN_*|MINGW32*)
SHLIB_CFLAGS=""
SHLIB_LD='${CC} -shared'
SHLIB_SUFFIX=".dll"
@@ -1231,6 +1230,19 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
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 +2070,7 @@ dnl # preprocessing tests use only CPPFLAGS.
case $system in
AIX-*) ;;
BSD/OS*) ;;
- CYGWIN_*) ;;
+ CYGWIN_*|MINGW32_*) ;;
IRIX*) ;;
NetBSD-*|FreeBSD-*|OpenBSD-*) ;;
Darwin-*) ;;
@@ -2115,6 +2127,25 @@ dnl # preprocessing tests use only CPPFLAGS.
TCL_LIBS="${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.