workaround for mingw bug [http://comments.gmane.org/gmane.comp.gnu.mingw.user/41724]

2 files changed, 84 insertions, 6 deletions

diff --git a/win/configure b/win/configure
index b53481f..34bbd5b 100755
--- a/win/configure
+++ b/win/configure
@@ -3574,6 +3574,8 @@ echo "${ECHO_T}yes" >&6
     # set various compiler flags depending on whether we are using gcc or cl
 
     if test "${GCC}" = "yes" ; then
+	extra_cflags="-pipe"
+	extra_ldflags="-pipe"
 	echo "$as_me:$LINENO: checking for mingw32 version of gcc" >&5
 echo $ECHO_N "checking for mingw32 version of gcc... $ECHO_C" >&6
 if test "${ac_cv_win32+set}" = set; then
@@ -3637,6 +3639,70 @@ echo "${ECHO_T}$ac_cv_win32" >&6
 echo "$as_me: error: ${CC} cannot produce win32 executables." >&2;}
    { (exit 1); exit 1; }; }
 	fi
+
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -mwindows -municode -Dmain=xxmain"
+	echo "$as_me:$LINENO: checking for working -municode linker flag" >&5
+echo $ECHO_N "checking for working -municode linker flag... $ECHO_C" >&6
+if test "${ac_cv_municode+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+	#include <windows.h>
+	int APIENTRY wWinMain(HINSTANCE a, HINSTANCE b, LPWSTR c, int d) {return 0;}
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_municode=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_municode=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_municode" >&5
+echo "${ECHO_T}$ac_cv_municode" >&6
+	CFLAGS=$hold_cflags
+	if test "$ac_cv_municode" = "no" ; then
+	    extra_ldflags="$extra_ldflags -static-libgcc"
+	fi
     fi
 
     echo "$as_me:$LINENO: checking compiler flags" >&5
@@ -3658,9 +3724,6 @@ echo $ECHO_N "checking compiler flags... $ECHO_C" >&6
 	MAKE_EXE="\${CC} -o \$@"
 	LIBPREFIX="lib"
 
-	extra_cflags="-pipe"
-	extra_ldflags="-pipe"
-
 	if test "${SHARED_BUILD}" = "0" ; then
 	    # static
             echo "$as_me:$LINENO: result: using static flags" >&5
diff --git a/win/tcl.m4 b/win/tcl.m4
index 5696366..589a8c0 100644
--- a/win/tcl.m4
+++ b/win/tcl.m4
@@ -632,6 +632,8 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
     # set various compiler flags depending on whether we are using gcc or cl
 
     if test "${GCC}" = "yes" ; then
+	extra_cflags="-pipe"
+	extra_ldflags="-pipe"
 	AC_CACHE_CHECK(for mingw32 version of gcc,
 	    ac_cv_win32,
 	    AC_TRY_COMPILE([
@@ -645,6 +647,22 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 	if test "$ac_cv_win32" != "yes"; then
 	    AC_MSG_ERROR([${CC} cannot produce win32 executables.])
 	fi
+
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -mwindows -municode -Dmain=xxmain"
+	AC_CACHE_CHECK(for working -municode linker flag,
+	    ac_cv_municode,
+	AC_TRY_LINK([
+	#include <windows.h>
+	int APIENTRY wWinMain(HINSTANCE a, HINSTANCE b, LPWSTR c, int d) {return 0;}
+	],
+	[],
+	    ac_cv_municode=yes,
+	    ac_cv_municode=no)
+	)
+	CFLAGS=$hold_cflags
+	if test "$ac_cv_municode" = "no" ; then
+	    extra_ldflags="$extra_ldflags -static-libgcc"
+	fi
     fi
 
     AC_MSG_CHECKING([compiler flags])
@@ -665,9 +683,6 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 	MAKE_EXE="\${CC} -o \[$]@"
 	LIBPREFIX="lib"
 
-	extra_cflags="-pipe"
-	extra_ldflags="-pipe"
-
 	if test "${SHARED_BUILD}" = "0" ; then
 	    # static
             AC_MSG_RESULT([using static flags])