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security_flags: Add comment about what it does and who uses it 

It was pointed out that people couldn't easily see who used this or
why so add some comments about that.

(From OE-Core rev: 67f09e9086b8fb1c0c8a1dd19419afb1a5af8daf)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Richard Purdie 2015-05-29 14:16:50 +01:00
parent ac87ae7dd2
commit 1c5e37acb9
1 changed files with 7 additions and 0 deletions
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7
meta/conf/distro/include/security_flags.inc
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@ -1,3 +1,10 @@
# Setup extra CFLAGS and LDFLAGS which have 'security' benefits. These
# don't work universally, there are recipes which can't use one, the other
# or both so a blacklist is maintained here. The idea would be over
# time to reduce this list to nothing.
# From a Yocto Project perspective, this file is included and tested
# in the DISTRO="poky-lsb" configuration.
SECURITY_CFLAGS ?= "-fstack-protector-all -pie -fpie -D_FORTIFY_SOURCE=2"
SECURITY_NO_PIE_CFLAGS ?= "-fstack-protector-all -D_FORTIFY_SOURCE=2"
SECURITY_LDFLAGS ?= "-Wl,-z,relro,-z,now"