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| author | Lynn Boger <laboger@linux.vnet.ibm.com> | 2015-09-30 18:06:11 -0500 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2015-09-30 23:06:11 +0000 |
| commit | 402565b61f9783473472fcfd729efa8c1e355d2b (patch) | |
| tree | 37eb8b2f85d9a656044717d6a82ffa026692d05c /gcc/configure.ac | |
| parent | 7dc396e20f0efa59cad65d95d53ff1541d9ae807 (diff) | |
| download | gcc-402565b61f9783473472fcfd729efa8c1e355d2b.zip gcc-402565b61f9783473472fcfd729efa8c1e355d2b.tar.gz gcc-402565b61f9783473472fcfd729efa8c1e355d2b.tar.bz2 | |
re PR go/66870 (split stack issues on ppc64le and ppc64)
PR target/66870
* config/rs6000/sysv4.h (TARGET_CAN_SPLIT_STACK_64BIT): Define.
* configure.ac: Define HAVE_GOLD_ALTERNATE_SPLIT_STACK on Power
based on gold linker version.
* gcc.c: Add -fuse-ld=gold to STACK_SPLIT_SPEC if
HAVE_GOLD_ALTERNATE_SPLIT_STACK defined.
* configure, config.in: Regenerate.
go:
* gospec.c (lang_specific_driver): Set appropriate split stack
options for 64 bit compiles based on TARGET_CAN_SPLIT_STACK_64BIT.
From-SVN: r228311
Diffstat (limited to 'gcc/configure.ac')
| -rw-r--r-- | gcc/configure.ac | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/gcc/configure.ac b/gcc/configure.ac index 49ca31a..88fb9bf 100644 --- a/gcc/configure.ac +++ b/gcc/configure.ac @@ -2247,6 +2247,42 @@ if test x$gcc_cv_ld != x; then fi AC_MSG_RESULT($ld_is_gold) +AC_MSG_CHECKING(gold linker with split stack support as non default) +# Check to see if default ld is not gold, but gold is +# available and has support for split stack. If gcc was configured +# with gold then no checking is done. +# +if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then + +# For platforms other than powerpc64*, enable as appropriate. + + gold_non_default=no + ld_gold=`which ${gcc_cv_ld}.gold` +# Make sure this gold has minimal split stack support + if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then + ld_vers=`$ld_gold --version | sed 1q` + gold_vers=`echo $ld_vers | sed -n \ + -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'` + case $target in +# check that the gold version contains the complete split stack support +# on powerpc64 big and little endian + powerpc64*-*-*) + case "$gold_vers" in + 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes + ;; + *) gold_non_default=no + ;; + esac + ;; + esac + fi + if test $gold_non_default = yes; then + AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1, + [Define if the gold linker supports split stack and is available as a non-default]) + fi +fi +AC_MSG_RESULT($gold_non_default) + ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld AC_SUBST(ORIGINAL_LD_FOR_TARGET) case "$ORIGINAL_LD_FOR_TARGET" in |