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authorjan.nijtmans <nijtmans@users.sourceforge.net>2012-03-30 09:49:25 (GMT)
committerjan.nijtmans <nijtmans@users.sourceforge.net>2012-03-30 09:49:25 (GMT)
commit59c52ee2fb7fcc819a92861101a8dd4b77c9f606 (patch)
treeae1366468409076e10cf9e8952fe77bd51012e4e
parente4e0688230bab9b433d43f26f6a9e36b0a32b083 (diff)
parent3a73c145323d7a85af7f9e5ad7de9e601cbaf903 (diff)
downloadtcl-59c52ee2fb7fcc819a92861101a8dd4b77c9f606.zip
tcl-59c52ee2fb7fcc819a92861101a8dd4b77c9f606.tar.gz
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[Bug 3511806] Compiler checks too early
(autoconf still to be run!)
-rw-r--r--ChangeLog9
-rw-r--r--unix/configure.in12
-rw-r--r--unix/tcl.m436
-rw-r--r--unix/tclUnixPort.h2
-rw-r--r--win/configure.in246
-rw-r--r--win/tcl.m4165
-rw-r--r--win/tclWinPort.h7
7 files changed, 225 insertions, 252 deletions
diff --git a/ChangeLog b/ChangeLog
index bffb230..b13ebb5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2012-03-30 Jan Nijtmans <nijtmans@users.sf.net>
+
+ * unix/tcl.m4: [Bug 3511806] Compiler checks too early
+ * unix/configure.in: This change allows to build the cygwin
+ * unix/tclUnixPort.h: and mingw32 ports of Tcl/Tk to build
+ * win/tcl.m4: out-of-the-box using a native or cross-
+ * win/configure.in: compiler.
+ * win/tclWinPort.h: (autoconf still to be run!)
+
2012-03-27 Jan Nijtmans <nijtmans@users.sf.net>
* generic/tcl.h: [Bug 3508771] Wrong Tcl_StatBuf used on MinGW
diff --git a/unix/configure.in b/unix/configure.in
index a30c2b4..b3df242 100644
--- a/unix/configure.in
+++ b/unix/configure.in
@@ -247,7 +247,9 @@ SC_TIME_HANDLER
# lack blkcnt_t.
#--------------------------------------------------------------------
+if test "$ac_cv_cygwin" != "yes"; then
AC_CHECK_MEMBERS([struct stat.st_blocks, struct stat.st_blksize])
+fi
AC_CHECK_TYPES([blkcnt_t])
AC_CHECK_FUNC(fstatfs, , [AC_DEFINE(NO_FSTATFS, 1, [Do we have fstatfs()?])])
@@ -381,7 +383,7 @@ AC_CHECK_FUNC(opendir, , [AC_DEFINE(USE_DIRENT2_H, 1, [May we include <dirent2.h
#--------------------------------------------------------------------
AC_CACHE_CHECK([union wait], tcl_cv_union_wait, [
- AC_TRY_LINK([#include <sys/types.h>
+ AC_TRY_LINK([#include <sys/types.h>
#include <sys/wait.h>], [
union wait x;
WIFEXITED(x); /* Generates compiler error if WIFEXITED
@@ -590,7 +592,7 @@ fi
#--------------------------------------------------------------------
# The statements below check for systems where POSIX-style
-# non-blocking I/O (O_NONBLOCK) doesn't work or is unimplemented.
+# non-blocking I/O (O_NONBLOCK) doesn't work or is unimplemented.
# On these systems (mostly older ones), use the old BSD-style
# FIONBIO approach instead.
#--------------------------------------------------------------------
@@ -785,12 +787,12 @@ if test "$FRAMEWORK_BUILD" = "1" ; then
PRIVATE_INCLUDE_DIR="${libdir}/PrivateHeaders"
HTML_DIR="${libdir}/Resources/Documentation/Reference/Tcl"
EXTRA_INSTALL="install-private-headers html-tcl"
- EXTRA_BUILD_HTML='@ln -fs contents.htm "$(HTML_INSTALL_DIR)"/TclTOC.html'
+ EXTRA_BUILD_HTML='@ln -fs contents.htm "$(HTML_INSTALL_DIR)"/TclTOC.html'
EXTRA_INSTALL_BINARIES='@echo "Installing Info.plist to $(LIB_INSTALL_DIR)/Resources" && mkdir -p "$(LIB_INSTALL_DIR)/Resources" && $(INSTALL_DATA) Tcl-Info.plist "$(LIB_INSTALL_DIR)/Resources/Info.plist"'
EXTRA_INSTALL_BINARIES="$EXTRA_INSTALL_BINARIES"' && echo "Installing license.terms to $(LIB_INSTALL_DIR)/Resources" && $(INSTALL_DATA) "$(TOP_DIR)/license.terms" "$(LIB_INSTALL_DIR)/Resources"'
EXTRA_INSTALL_BINARIES="$EXTRA_INSTALL_BINARIES"' && echo "Finalizing Tcl.framework" && rm -f "$(LIB_INSTALL_DIR)/../Current" && ln -s "$(VERSION)" "$(LIB_INSTALL_DIR)/../Current" && for f in "$(LIB_FILE)" tclConfig.sh Resources Headers PrivateHeaders; do rm -f "$(LIB_INSTALL_DIR)/../../$$f" && ln -s "Versions/Current/$$f" "$(LIB_INSTALL_DIR)/../.."; done && f="$(STUB_LIB_FILE)" && rm -f "$(LIB_INSTALL_DIR)/../../$$f" && ln -s "Versions/$(VERSION)/$$f" "$(LIB_INSTALL_DIR)/../.."'
- # Don't use AC_DEFINE for the following as the framework version define
- # needs to go into the Makefile even when using autoheader, so that we
+ # Don't use AC_DEFINE for the following as the framework version define
+ # needs to go into the Makefile even when using autoheader, so that we
# can pick up a potential make override of VERSION. Also, don't put this
# into CFLAGS as it should not go into tclConfig.sh
EXTRA_CC_SWITCHES='-DTCL_FRAMEWORK_VERSION=\"$(VERSION)\"'
diff --git a/unix/tcl.m4 b/unix/tcl.m4
index fe9b136..ca77586 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -1237,7 +1237,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
CC_SEARCH_FLAGS=""
LD_SEARCH_FLAGS=""
;;
- CYGWIN_*)
+ CYGWIN_*|MINGW32*)
SHLIB_CFLAGS=""
SHLIB_LD='${CC} -shared'
SHLIB_SUFFIX=".dll"
@@ -1248,6 +1248,19 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
TCL_NEEDS_EXP_FILE=1
TCL_EXPORT_FILE_SUFFIX='${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"
@@ -2069,7 +2082,7 @@ dnl # preprocessing tests use only CPPFLAGS.
case $system in
AIX-*) ;;
BSD/OS*) ;;
- CYGWIN_*) ;;
+ CYGWIN_*|MINGW32_*) ;;
IRIX*) ;;
NetBSD-*|FreeBSD-*|OpenBSD-*) ;;
Darwin-*) ;;
@@ -2114,6 +2127,25 @@ dnl # preprocessing tests use only CPPFLAGS.
TCL_LIBS="${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.
diff --git a/unix/tclUnixPort.h b/unix/tclUnixPort.h
index fef748b..82fc8bb 100644
--- a/unix/tclUnixPort.h
+++ b/unix/tclUnixPort.h
@@ -76,8 +76,6 @@ typedef off_t Tcl_SeekOffset;
#ifdef __CYGWIN__
MODULE_SCOPE int TclOSstat(const char *name, Tcl_StatBuf *statBuf);
MODULE_SCOPE int TclOSlstat(const char *name, Tcl_StatBuf *statBuf);
-#undef HAVE_STRUCT_STAT_ST_BLOCKS
-#undef HAVE_STRUCT_STAT_ST_BLKSIZE
#elif defined(HAVE_STRUCT_STAT64)
# define TclOSstat stat64
# define TclOSlstat lstat64
diff --git a/win/configure.in b/win/configure.in
index 1b8c25a..dd1f745 100644
--- a/win/configure.in
+++ b/win/configure.in
@@ -67,225 +67,6 @@ AC_CHECK_TOOL(RC, windres)
AC_PROG_MAKE_SET
#--------------------------------------------------------------------
-# Perform additinal compiler tests.
-#--------------------------------------------------------------------
-
-dnl Currently AC_CYGWIN is disabled since it invokes AC_CANONICAL_HOST
-dnl under autoconf 2.5X.
-dnl
-dnl AC_CYGWIN
-
-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 "$ac_cv_cygwin" = "yes" ; then
- AC_MSG_ERROR([Compiling under Cygwin is not currently supported.
-A maintainer for the Cygwin port of Tcl/Tk is needed. See the README
-file for information about building with Mingw.])
-fi
-
-
-AC_CACHE_CHECK(for SEH support in compiler,
- tcl_cv_seh,
-AC_TRY_RUN([
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#undef WIN32_LEAN_AND_MEAN
-
-int main(int argc, char** argv) {
- int a, b = 0;
- __try {
- a = 666 / b;
- }
- __except (EXCEPTION_EXECUTE_HANDLER) {
- return 0;
- }
- return 1;
-}
-],
- tcl_cv_seh=yes,
- tcl_cv_seh=no,
- tcl_cv_seh=no)
-)
-if test "$tcl_cv_seh" = "no" ; then
- AC_DEFINE(HAVE_NO_SEH, 1,
- [Defined when mingw does not support SEH])
-fi
-
-#
-# Check to see if the excpt.h include file provided contains the
-# definition for EXCEPTION_DISPOSITION; if not, which is the case
-# with Cygwin's version as of 2002-04-10, define it to be int,
-# sufficient for getting the current code to work.
-#
-AC_CACHE_CHECK(for EXCEPTION_DISPOSITION support in include files,
- tcl_cv_eh_disposition,
-AC_TRY_COMPILE([
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#undef WIN32_LEAN_AND_MEAN
-],
-[
- EXCEPTION_DISPOSITION x;
-],
- tcl_cv_eh_disposition=yes,
- tcl_cv_eh_disposition=no)
-)
-if test "$tcl_cv_eh_disposition" = "no" ; then
- AC_DEFINE(EXCEPTION_DISPOSITION, int,
- [Defined when cygwin/mingw does not support EXCEPTION DISPOSITION])
-fi
-
-
-# Check to see if the winsock2.h include file provided contains
-# typedefs like LPFN_ACCEPT and friends.
-#
-AC_CACHE_CHECK(for LPFN_ACCEPT support in winsock2.h,
- tcl_cv_lpfn_decls,
-AC_TRY_COMPILE([
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#undef WIN32_LEAN_AND_MEAN
-#include <winsock2.h>
-],
-[
- LPFN_ACCEPT accept;
-],
- tcl_cv_lpfn_decls=yes,
- tcl_cv_lpfn_decls=no)
-)
-if test "$tcl_cv_lpfn_decls" = "no" ; then
- AC_DEFINE(HAVE_NO_LPFN_DECLS, 1,
- [Defined when cygwin/mingw does not support LPFN_ACCEPT and friends.])
-fi
-
-# Check to see if winnt.h defines CHAR, SHORT, and LONG
-# even if VOID has already been #defined. The win32api
-# used by mingw and cygwin is known to do this.
-
-AC_CACHE_CHECK(for winnt.h that ignores VOID define,
- tcl_cv_winnt_ignore_void,
-AC_TRY_COMPILE([
-#define VOID void
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#undef WIN32_LEAN_AND_MEAN
-],
-[
- CHAR c;
- SHORT s;
- LONG l;
-],
- tcl_cv_winnt_ignore_void=yes,
- tcl_cv_winnt_ignore_void=no)
-)
-if test "$tcl_cv_winnt_ignore_void" = "yes" ; then
- AC_DEFINE(HAVE_WINNT_IGNORE_VOID, 1,
- [Defined when cygwin/mingw ignores VOID define in winnt.h])
-fi
-
-# Check to see if malloc.h is missing the alloca function
-# declaration. This is known to be a problem with Mingw.
-# If we compiled without the function declaration, it
-# would work but we would get a warning message from gcc.
-# If we add the function declaration ourselves, it
-# would not compile correctly because the _alloca
-# function expects the argument to be passed in a
-# register and not on the stack. Instead, we just
-# call it from inline asm code.
-
-AC_CACHE_CHECK(for alloca declaration in malloc.h,
- tcl_cv_malloc_decl_alloca,
-AC_TRY_COMPILE([
-#include <malloc.h>
-],
-[
- size_t arg = 0;
- void* ptr;
- ptr = alloca;
- ptr = alloca(arg);
-],
- tcl_cv_malloc_decl_alloca=yes,
- tcl_cv_malloc_decl_alloca=no)
-)
-if test "$tcl_cv_malloc_decl_alloca" = "no" &&
- test "${GCC}" = "yes" ; then
- AC_DEFINE(HAVE_ALLOCA_GCC_INLINE, 1,
- [Defined when gcc should use inline ASM to call alloca.])
-fi
-
-# See if the compiler supports casting to a union type.
-# This is used to stop gcc from printing a compiler
-# warning when initializing a union member.
-
-AC_CACHE_CHECK(for cast to union support,
- tcl_cv_cast_to_union,
-AC_TRY_COMPILE([],
-[
- union foo { int i; double d; };
- union foo f = (union foo) (int) 0;
-],
- tcl_cv_cast_to_union=yes,
- tcl_cv_cast_to_union=no)
-)
-if test "$tcl_cv_cast_to_union" = "yes"; then
- AC_DEFINE(HAVE_CAST_TO_UNION, 1,
- [Defined when compiler supports casting to union type.])
-fi
-
-# See if declarations like FINDEX_INFO_LEVELS are
-# missing from winbase.h. This is known to be
-# a problem with VC++ 5.2.
-
-AC_CACHE_CHECK(for FINDEX_INFO_LEVELS in winbase.h,
- tcl_cv_findex_enums,
-AC_TRY_COMPILE([
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#undef WIN32_LEAN_AND_MEAN
-],
-[
- FINDEX_INFO_LEVELS i;
- FINDEX_SEARCH_OPS j;
-],
- tcl_cv_findex_enums=yes,
- tcl_cv_findex_enums=no)
-)
-if test "$tcl_cv_findex_enums" = "no"; then
- AC_DEFINE(HAVE_NO_FINDEX_ENUMS, 1,
- [Defined when enums are missing from winbase.h])
-fi
-
-# See if MWMO_ALERTABLE is missing from winuser.h
-# This is known to be a problem with Mingw.
-
-AC_CACHE_CHECK(for MWMO_ALERTABLE in winuser.h,
- tcl_cv_mwmo_alertable,
-AC_TRY_COMPILE([
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#undef WIN32_LEAN_AND_MEAN
-],
-[
- int i = MWMO_ALERTABLE;
-],
- tcl_cv_mwmo_alertable=yes,
- tcl_cv_mwmo_alertable=no)
-)
-if test "$tcl_cv_mwmo_alertable" = "no"; then
- AC_DEFINE(HAVE_NO_MWMO_ALERTABLE, 1,
- [Defined when MWMO_ALERTABLE is missing from winuser.h])
-fi
-
-#--------------------------------------------------------------------
# Determines the correct binary file extension (.o, .obj, .exe etc.)
#--------------------------------------------------------------------
@@ -351,6 +132,33 @@ AC_CHECK_TYPE([uintptr_t], [
fi
])
#--------------------------------------------------------------------
+# Perform additinal compiler tests.
+#--------------------------------------------------------------------
+
+# See if declarations like FINDEX_INFO_LEVELS are
+# missing from winbase.h. This is known to be
+# a problem with VC++ 5.2.
+
+AC_CACHE_CHECK(for FINDEX_INFO_LEVELS in winbase.h,
+ tcl_cv_findex_enums,
+AC_TRY_COMPILE([
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#undef WIN32_LEAN_AND_MEAN
+],
+[
+ FINDEX_INFO_LEVELS i;
+ FINDEX_SEARCH_OPS j;
+],
+ tcl_cv_findex_enums=yes,
+ tcl_cv_findex_enums=no)
+)
+if test "$tcl_cv_findex_enums" = "no"; then
+ AC_DEFINE(HAVE_NO_FINDEX_ENUMS, 1,
+ [Defined when enums are missing from winbase.h])
+fi
+
+#--------------------------------------------------------------------
# Set the default compiler switches based on the --enable-symbols
# option. This macro depends on C flags, and should be called
# after SC_CONFIG_CFLAGS macro is called.
diff --git a/win/tcl.m4 b/win/tcl.m4
index 83a4ea3..9a5fa7b 100644
--- a/win/tcl.m4
+++ b/win/tcl.m4
@@ -411,6 +411,39 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
# which requires x86|amd64|ia64.
MACHINE="X86"
+ if test "$GCC" = "yes"; then
+
+ AC_CACHE_CHECK(for cross-compile version of gcc,
+ ac_cv_cross,
+ AC_TRY_COMPILE([
+ #ifdef __WIN32__
+ #error cross-compiler
+ #endif
+ ], [],
+ ac_cv_cross=yes,
+ ac_cv_cross=no)
+ )
+
+ if test "$ac_cv_cross" = "yes"; then
+ case "$do64bit" in
+ amd64|x64|yes)
+ CC="x86_64-w64-mingw32-gcc"
+ LD="x86_64-w64-mingw32-ld"
+ AR="x86_64-w64-mingw32-ar"
+ RANLIB="x86_64-w64-mingw32-ranlib"
+ RC="x86_64-w64-mingw32-windres"
+ ;;
+ *)
+ CC="i686-w64-mingw32-gcc"
+ LD="i686-w64-mingw32-ld"
+ AR="i686-w64-mingw32-ar"
+ RANLIB="i686-w64-mingw32-ranlib"
+ RC="i686-w64-mingw32-windres"
+ ;;
+ esac
+ fi
+ fi
+
# Check for a bug in gcc's windres that causes the
# compile to fail when a Windows native path is
# passed into windres. The mingw toolchain requires
@@ -436,7 +469,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
cyg_conftest=
fi
- if test "$CYGPATH" = "echo" || test "$ac_cv_cygwin" = "yes"; then
+ if test "$CYGPATH" = "echo"; then
DEPARG='"$<"'
else
DEPARG='"$(shell $(CYGPATH) $<)"'
@@ -444,6 +477,22 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
# set various compiler flags depending on whether we are using gcc or cl
+ if test "${GCC}" = "yes" ; then
+ AC_CACHE_CHECK(for mingw32 version of gcc,
+ ac_cv_win32,
+ AC_TRY_COMPILE([
+ #ifdef __WIN32__
+ #error win32
+ #endif
+ ], [],
+ ac_cv_win32=no,
+ ac_cv_win32=yes)
+ )
+ if test "$ac_cv_win32" != "yes"; then
+ AC_MSG_ERROR([${CC} cannot produce win32 executables.])
+ fi
+ fi
+
AC_MSG_CHECKING([compiler flags])
if test "${GCC}" = "yes" ; then
SHLIB_LD=""
@@ -465,21 +514,6 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
extra_cflags="-pipe"
extra_ldflags="-pipe"
- if test "$ac_cv_cygwin" = "yes"; then
- touch ac$$.c
- if ${CC} -c -mwin32 ac$$.c >/dev/null 2>&1; then
- case "$extra_cflags" in
- *-mwin32*) ;;
- *) extra_cflags="-mwin32 $extra_cflags" ;;
- esac
- case "$extra_ldflags" in
- *-mwin32*) ;;
- *) extra_ldflags="-mwin32 $extra_ldflags" ;;
- esac
- fi
- rm -f ac$$.o ac$$.c
- fi
-
if test "${SHARED_BUILD}" = "0" ; then
# static
AC_MSG_RESULT([using static flags])
@@ -559,9 +593,9 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
;;
*)
AC_TRY_COMPILE([
- #ifdef _WIN64
+ #ifdef _WIN64
#error 64-bit
- #endif
+ #endif
], [],
tcl_win_64bit=no,
tcl_win_64bit=yes
@@ -792,6 +826,101 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
AC_DEFINE(TCL_CFG_DO64BIT)
fi
+ if test "${GCC}" = "yes" ; then
+ AC_CACHE_CHECK(for SEH support in compiler,
+ tcl_cv_seh,
+ AC_TRY_RUN([
+ #define WIN32_LEAN_AND_MEAN
+ #include <windows.h>
+ #undef WIN32_LEAN_AND_MEAN
+
+ int main(int argc, char** argv) {
+ int a, b = 0;
+ __try {
+ a = 666 / b;
+ }
+ __except (EXCEPTION_EXECUTE_HANDLER) {
+ return 0;
+ }
+ return 1;
+ }
+ ],
+ tcl_cv_seh=yes,
+ tcl_cv_seh=no,
+ tcl_cv_seh=no)
+ )
+ if test "$tcl_cv_seh" = "no" ; then
+ AC_DEFINE(HAVE_NO_SEH, 1,
+ [Defined when mingw does not support SEH])
+ fi
+
+ #
+ # Check to see if the excpt.h include file provided contains the
+ # definition for EXCEPTION_DISPOSITION; if not, which is the case
+ # with Cygwin's version as of 2002-04-10, define it to be int,
+ # sufficient for getting the current code to work.
+ #
+ AC_CACHE_CHECK(for EXCEPTION_DISPOSITION support in include files,
+ tcl_cv_eh_disposition,
+ AC_TRY_COMPILE([
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+# undef WIN32_LEAN_AND_MEAN
+ ],[
+ EXCEPTION_DISPOSITION x;
+ ],
+ tcl_cv_eh_disposition=yes,
+ tcl_cv_eh_disposition=no)
+ )
+ if test "$tcl_cv_eh_disposition" = "no" ; then
+ AC_DEFINE(EXCEPTION_DISPOSITION, int,
+ [Defined when cygwin/mingw does not support EXCEPTION DISPOSITION])
+ fi
+
+ # Check to see if winnt.h defines CHAR, SHORT, and LONG
+ # even if VOID has already been #defined. The win32api
+ # used by mingw and cygwin is known to do this.
+
+ AC_CACHE_CHECK(for winnt.h that ignores VOID define,
+ tcl_cv_winnt_ignore_void,
+ AC_TRY_COMPILE([
+ #define VOID void
+ #define WIN32_LEAN_AND_MEAN
+ #include <windows.h>
+ #undef WIN32_LEAN_AND_MEAN
+ ], [
+ CHAR c;
+ SHORT s;
+ LONG l;
+ ],
+ tcl_cv_winnt_ignore_void=yes,
+ tcl_cv_winnt_ignore_void=no)
+ )
+ if test "$tcl_cv_winnt_ignore_void" = "yes" ; then
+ AC_DEFINE(HAVE_WINNT_IGNORE_VOID, 1,
+ [Defined when cygwin/mingw ignores VOID define in winnt.h])
+ fi
+
+ # See if the compiler supports casting to a union type.
+ # This is used to stop gcc from printing a compiler
+ # warning when initializing a union member.
+
+ AC_CACHE_CHECK(for cast to union support,
+ tcl_cv_cast_to_union,
+ AC_TRY_COMPILE([],
+ [
+ union foo { int i; double d; };
+ union foo f = (union foo) (int) 0;
+ ],
+ tcl_cv_cast_to_union=yes,
+ tcl_cv_cast_to_union=no)
+ )
+ if test "$tcl_cv_cast_to_union" = "yes"; then
+ AC_DEFINE(HAVE_CAST_TO_UNION, 1,
+ [Defined when compiler supports casting to union type.])
+ fi
+ fi
+
# DL_LIBS is empty, but then we match the Unix version
AC_SUBST(DL_LIBS)
AC_SUBST(CFLAGS_DEBUG)
diff --git a/win/tclWinPort.h b/win/tclWinPort.h
index e2cac52..da685ad 100644
--- a/win/tclWinPort.h
+++ b/win/tclWinPort.h
@@ -371,11 +371,6 @@ typedef DWORD_PTR * PDWORD_PTR;
#endif /* __BORLANDC__ */
#ifdef __WATCOMC__
- /*
- * OpenWatcom uses a wine derived winsock2.h that is missing the
- * LPFN_* typedefs.
- */
-# define HAVE_NO_LPFN_DECLS
# if !defined(__CHAR_SIGNED__)
# error "You must use the -j switch to ensure char is signed."
# endif
@@ -438,7 +433,7 @@ typedef DWORD_PTR * PDWORD_PTR;
/*
* Older version of Mingw are known to lack a MWMO_ALERTABLE define.
*/
-#if defined(HAVE_NO_MWMO_ALERTABLE)
+#if !defined(MWMO_ALERTABLE)
# define MWMO_ALERTABLE 2
#endif