diff options
Diffstat (limited to 'gcc/configure')
| -rwxr-xr-x | gcc/configure | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/gcc/configure b/gcc/configure index f557c2d..79ed496b 100755 --- a/gcc/configure +++ b/gcc/configure @@ -15514,6 +15514,54 @@ _ACEOF fi +# Test for stack protector support in target C library. +case "$target" in + *-*-linux*) + echo "$as_me:$LINENO: checking __stack_chk_fail in target GNU C library" >&5 +echo $ECHO_N "checking __stack_chk_fail in target GNU C library... $ECHO_C" >&6 +if test "${gcc_cv_libc_provides_ssp+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + gcc_cv_libc_provides_ssp=no + if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then + if test "x$with_sysroot" = x; then + glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include" + elif test "x$with_sysroot" = xyes; then + glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include" + else + glibc_header_dir="${with_sysroot}/usr/include" + fi + else + glibc_header_dir=/usr/include + fi + # glibc 2.4 and later provides __stack_chk_fail and + # either __stack_chk_guard, or TLS access to stack guard canary. + if test -f $glibc_header_dir/features.h \ + && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \ + $glibc_header_dir/features.h > /dev/null; then + if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \ + $glibc_header_dir/features.h > /dev/null; then + gcc_cv_libc_provides_ssp=yes + elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \ + $glibc_header_dir/features.h > /dev/null \ + && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \ + $glibc_header_dir/features.h > /dev/null; then + gcc_cv_libc_provides_ssp=yes + fi + fi +fi +echo "$as_me:$LINENO: result: $gcc_cv_libc_provides_ssp" >&5 +echo "${ECHO_T}$gcc_cv_libc_provides_ssp" >&6 ;; + *) gcc_cv_libc_provides_ssp=no ;; +esac +if test x$gcc_cv_libc_provides_ssp = xyes; then + +cat >>confdefs.h <<\_ACEOF +#define TARGET_LIBC_PROVIDES_SSP 1 +_ACEOF + +fi + # Find out what GC implementation we want, or may, use. # Check whether --with-gc or --without-gc was given. |