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author | Nick Alcock <nick.alcock@oracle.com> | 2016-12-26 10:08:18 +0100 |
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committer | Florian Weimer <fweimer@redhat.com> | 2016-12-26 10:08:19 +0100 |
commit | 03baef1c9cfb396d76cae20a00aee657871e79c4 (patch) | |
tree | ed115b828293aa26c4b5f338391286b25eaa955e /sysdeps | |
parent | 81e0662e5f2c342ffa413826b7b100d56677b613 (diff) | |
download | glibc-03baef1c9cfb396d76cae20a00aee657871e79c4.tar.gz glibc-03baef1c9cfb396d76cae20a00aee657871e79c4.tar.xz glibc-03baef1c9cfb396d76cae20a00aee657871e79c4.zip |
Configure support for --enable-stack-protector [BZ #7065]
This adds =all and =strong, with obvious semantics, defaulting to off. We don't validate the value of the option yet: that's in a later patch. Nor do we use it for anything at this stage. We differentiate between 'the compiler understands -fstack-protector' and 'the user wanted -fstack-protector' so that we can pass -fno-stack-protector in appropriate places even if the user didn't want to turn on -fstack-protector for other parts. (This helps us overcome another existing limitation, that glibc doesn't work with GCCs hacked to pass in -fstack-protector by default.) We also arrange to set the STACK_PROTECTOR_LEVEL #define to a value appropriate for the stack-protection level in use for each file in particular.
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