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authorMike Frysinger <vapier@gentoo.org>2015-10-19 13:07:28 -0400
committerMike Frysinger <vapier@gentoo.org>2015-10-19 15:36:48 -0400
commit6ab674ebff5e60c62b126d0ac2e774e581916afe (patch)
tree72e72448b982e3715630f091e3be4612244f6589 /time
parentcf6d542db3dfe26402b6adaa740a578b54767f65 (diff)
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use -fstack-protector-strong when available
With gcc-4.9, a new -fstack-protector-strong flag is available that is between -fstack-protector (pretty weak) and -fstack-protector-all (pretty strong) that provides good trade-offs between overhead but still providing good coverage. Update the places in glibc that use ssp to use this flag when it's available. This also kills off the indirection of hardcoding the flag name in the Makefiles and adding it based on a have-ssp boolean. Instead, the build always expands the $(stack-protector) variable to the best ssp setting. This makes the build logic a bit simpler and allows people to easily set to a diff flag like: make stack-protector=-fstack-protector-all
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