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| author | Ian Lance Taylor <ian@gcc.gnu.org> | 2015-09-15 17:05:14 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2015-09-15 17:05:14 +0000 |
| commit | c33c18cdc6b29a312464cb16996530b47a333c98 (patch) | |
| tree | 48f95ab84097839a2967b885b72d89e96a35bcf7 /libgo/configure | |
| parent | 10e0393ceb569239f7ea1bfb2f3116df4effe747 (diff) | |
| download | gcc-c33c18cdc6b29a312464cb16996530b47a333c98.tar.gz | |
libgo: test linking split-stack and non-split-stack together
PPC has split-stack support in current GCC, but old version of gold will
reject attempts to link PPC split-stack and non-split-stack code
together. Test for that, and don't compile the C code with
-fsplit-stack if it doesn't work.
Reviewed-on: https://go-review.googlesource.com/14594
From-SVN: r227802
Diffstat (limited to 'libgo/configure')
| -rwxr-xr-x | libgo/configure | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/libgo/configure b/libgo/configure index 29d16e75b04..9c79574c9e7 100755 --- a/libgo/configure +++ b/libgo/configure @@ -14007,7 +14007,32 @@ CFLAGS=$CFLAGS_hold fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libgo_cv_c_split_stack_supported" >&5 $as_echo "$libgo_cv_c_split_stack_supported" >&6; } -if test "$libgo_cv_c_split_stack_supported" = yes; then + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether linker supports split/non-split linked together" >&5 +$as_echo_n "checking whether linker supports split/non-split linked together... " >&6; } +if test "${libgo_cv_c_linker_split_non_split+set}" = set; then : + $as_echo_n "(cached) " >&6 +else + cat > conftest1.c << EOF +extern void f(); +int main() { f(); return 0; } +EOF +cat > conftest2.c << EOF +void f() {} +EOF +$CC -c -fsplit-stack $CFLAGS $CPPFLAGS conftest1.c +$CC -c $CFLAGS $CPPFLAGS conftest2.c +if $CC -o conftest conftest1.$ac_objext conftest2.$ac_objext; then + libgo_cv_c_linker_split_non_split=yes +else + libgo_cv_c_linker_split_non_split=no +fi +rm -f conftest1.* conftest2.* conftest +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libgo_cv_c_linker_split_non_split" >&5 +$as_echo "$libgo_cv_c_linker_split_non_split" >&6; } + +if test "$libgo_cv_c_split_stack_supported" = yes -a "$libgo_cv_c_linker_split_non_split" = yes; then SPLIT_STACK=-fsplit-stack $as_echo "#define USING_SPLIT_STACK 1" >>confdefs.h @@ -14016,7 +14041,7 @@ else SPLIT_STACK= fi - if test "$libgo_cv_c_split_stack_supported" = yes; then + if test "$libgo_cv_c_split_stack_supported" = yes -a "$libgo_cv_c_linker_split_non_split" = yes; then USING_SPLIT_STACK_TRUE= USING_SPLIT_STACK_FALSE='#' else |