diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 20 |
1 files changed, 20 insertions, 0 deletions
@@ -2301,6 +2301,25 @@ fi echores $_named_asm_args +if darwin && test "$cc_vendor" = "gnu" ; then +echocheck "GCC support of -mstackrealign" +# GCC 4.2 and some earlier Apple versions support this flag on x86. Since +# Mac OS X/Intel has an ABI different from Windows this is needed to avoid +# crashes when loading Win32 DLLs. Unfortunately some gcc versions create +# wrong code with this flag, but this can be worked around by adding +# -fno-unit-at-a-time as described in the blog post at +# http://www.dribin.org/dave/blog/archives/2006/12/05/missing_third_param/ +cat > $TMPC << EOF +__attribute__((noinline)) static int foo3(int i1, int i2, int i3) { return i3; } +int main(void) { return foo3(1,2,3) == 3 ? 0 : 1; } +EOF + cc_check -O4 -mstackrealign && tmp_run && _stackrealign=-mstackrealign + test -z "$_stackrealign" && cc_check -O4 -mstackrealign -fno-unit-at-a-time \ + && tmp_run && _stackrealign="-mstackrealign -fno-unit-at-a-time" + test -n "$_stackrealign" && echores "yes" || echores "no" +fi # if darwin && test "$cc_vendor" = "gnu" ; then + + # Checking for CFLAGS _install_strip="-s" if test "$_profile" != "" || test "$_debug" != "" ; then @@ -7527,6 +7546,7 @@ EXTRA_INC = $_inc_extra EXTRAXX_INC = $_inc_extra $_inc_extraxx OPTFLAGS = $CFLAGS \$(EXTRA_INC) CXXFLAGS = $CXXFLAGS \$(EXTRAXX_INC) +CFLAG_STACKREALIGN = $_stackrealign INSTALLSTRIP = $_install_strip CHARSET = $_charset HELP_FILE = $_mp_help |