diff options
Diffstat (limited to 'gcc-4.9/gcc/configure.ac')
| -rw-r--r-- | gcc-4.9/gcc/configure.ac | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/configure.ac b/gcc-4.9/gcc/configure.ac index 49dfb62f1..c7a593f52 100644 --- a/gcc-4.9/gcc/configure.ac +++ b/gcc-4.9/gcc/configure.ac @@ -4568,6 +4568,35 @@ GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR]) if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1, [Define if your linker supports .eh_frame_hdr.]) + AC_ARG_ENABLE(eh-frame-hdr-for-static, + [AS_HELP_STRING([--enable-eh-frame-hdr-for-static], + [enable linker PT_GNU_EH_FRAME support for static executable])], + [case $enable_eh_frame_hdr_for_static in + yes | no) ;; + *) AC_MSG_ERROR(['$enable_eh_frame_hdr_for_static' is an invalid +value for --enable-eh-frame-hdr-for-static. +Valid choices are 'yes' and 'no'.]) ;; + esac], +# Only support for glibc 2.3.0 or higher with AT_PHDR/AT_PHNUM from +# Linux kernel. + [[if test x$host = x$build -a x$host = x$target && + ldd --version 2>&1 >/dev/null && + glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then + glibcmajor=`expr "$glibcver" : "\([0-9]*\)"` + glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"` + glibcnum=`expr $glibcmajor \* 1000 + $glibcminor` + if test "$glibcnum" -ge 2003 ; then + auvx=`LD_SHOW_AUXV=1 ldd 2>/dev/null` + if echo "$auvx" | grep AT_PHDR > /dev/null && + echo "$auvx" | grep AT_PHNUM > /dev/null; then + enable_eh_frame_hdr_for_static=yes + fi + fi + fi]]) + if test x$enable_eh_frame_hdr_for_static = xyes; then + AC_DEFINE(USE_EH_FRAME_HDR_FOR_STATIC, 1, +[Define if your system supports PT_GNU_EH_FRAME for static executable.]) + fi fi AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr) |