diff options
| author | H.J. Lu <hjl.tools@gmail.com> | 2020-05-15 09:06:50 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2020-05-15 09:07:17 -0700 |
| commit | 4c1a5d8b71e29b71e0bc1004480c12c5fc427cb7 (patch) | |
| tree | 00192b598877094aa647955fecc5997ced114e06 /config | |
| parent | 0ec52417fd9b3bef5227cdc9a18ff4f0247b0ea4 (diff) | |
| download | gcc-4c1a5d8b71e29b71e0bc1004480c12c5fc427cb7.tar.gz | |
x86: Also check if -fcf-protection works
When defaulting CET run-time support to auto, check if -fcf-protection
works. Even if the stage1 GCC doesn't support -fcf-protection, since
the final GCC does, CET run-time support will be enabled by default if
binutils support CET.
config/
PR bootstrap/95147
* cet.m4 (GCC_CET_FLAGS): Also check if -fcf-protection works
when defaulting to auto.
libatomic/
PR bootstrap/95147
* configure: Regenerated.
libbacktrace/
PR bootstrap/95147
* configure: Regenerated.
libgcc/
PR bootstrap/95147
* configure: Regenerated.
libgfortran/
PR bootstrap/95147
* configure: Regenerated.
libgomp/
PR bootstrap/95147
* configure: Regenerated.
libitm/
PR bootstrap/95147
* configure: Regenerated.
libobjc/
PR bootstrap/95147
* configure: Regenerated.
libphobos/
PR bootstrap/95147
* configure: Regenerated.
libquadmath/
PR bootstrap/95147
* configure: Regenerated.
libsanitizer/
PR bootstrap/95147
* configure: Regenerated.
libssp/
PR bootstrap/95147
* configure: Regenerated.
libstdc++-v3/
PR bootstrap/95147
* configure: Regenerated.
libvtv/
PR bootstrap/95147
* configure: Regenerated.
zlib/
PR bootstrap/95147
* configure: Regenerated.
Diffstat (limited to 'config')
| -rw-r--r-- | config/ChangeLog | 6 | ||||
| -rw-r--r-- | config/cet.m4 | 3 |
2 files changed, 9 insertions, 0 deletions
diff --git a/config/ChangeLog b/config/ChangeLog index d36c5bb4976..a4d54749669 100644 --- a/config/ChangeLog +++ b/config/ChangeLog @@ -1,3 +1,9 @@ +2020-05-15 H.J. Lu <hongjiu.lu@intel.com> + + PR bootstrap/95147 + * cet.m4 (GCC_CET_FLAGS): Also check if -fcf-protection works + when defaulting to auto. + 2020-05-14 H.J. Lu <hongjiu.lu@intel.com> * cet.m4 (GCC_CET_FLAGS): Change default to auto. diff --git a/config/cet.m4 b/config/cet.m4 index 63c6ea9ee02..2bb2c8a95ac 100644 --- a/config/cet.m4 +++ b/config/cet.m4 @@ -13,6 +13,8 @@ case "$host" in auto) # Check if target supports multi-byte NOPs # and if assembler supports CET insn. + save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -fcf-protection" AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [], @@ -25,6 +27,7 @@ asm ("setssbsy"); ])], [enable_cet=yes], [enable_cet=no]) + CFLAGS="$save_CFLAGS" ;; yes) # Check if assembler supports CET. |