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author | ru <ru@FreeBSD.org> | 2008-06-25 21:33:28 +0000 |
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committer | ru <ru@FreeBSD.org> | 2008-06-25 21:33:28 +0000 |
commit | 8735fdbd4ceeb78442804b393d49f5e7f56c1967 (patch) | |
tree | 3821989620f33150162837ccfad067791bb346ca /sys/boot/Makefile.inc | |
parent | 762f29e950fd1511beb76c95c5014bb779d4f5ed (diff) | |
download | FreeBSD-src-8735fdbd4ceeb78442804b393d49f5e7f56c1967.zip FreeBSD-src-8735fdbd4ceeb78442804b393d49f5e7f56c1967.tar.gz |
Enable GCC stack protection (aka Propolice) for userland:
- It is opt-out for now so as to give it maximum testing, but it may be
turned opt-in for stable branches depending on the consensus. You
can turn it off with WITHOUT_SSP.
- WITHOUT_SSP was previously used to disable the build of GNU libssp.
It is harmless to steal the knob as SSP symbols have been provided
by libc for a long time, GNU libssp should not have been much used.
- SSP is disabled in a few corners such as system bootstrap programs
(sys/boot), process bootstrap code (rtld, csu) and SSP symbols themselves.
- It should be safe to use -fstack-protector-all to build world, however
libc will be automatically downgraded to -fstack-protector because it
breaks rtld otherwise.
- This option is unavailable on ia64.
Enable GCC stack protection (aka Propolice) for kernel:
- It is opt-out for now so as to give it maximum testing.
- Do not compile your kernel with -fstack-protector-all, it won't work.
Submitted by: Jeremie Le Hen <jeremie@le-hen.org>
Diffstat (limited to 'sys/boot/Makefile.inc')
-rw-r--r-- | sys/boot/Makefile.inc | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/boot/Makefile.inc b/sys/boot/Makefile.inc new file mode 100644 index 0000000..09bde81 --- /dev/null +++ b/sys/boot/Makefile.inc @@ -0,0 +1,3 @@ +# $FreeBSD$ + +WITHOUT_SSP= |