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Only enable -fstack-protector-strong on gcc 4.9+ and default to -fstack-protector
when -fstack-protector-strong is not available, like it was implicitly before r288669 As noted by antoine@, devel/gcc (which is 4.8.5) lacks -fstack-protector-strong support, whereas 4.8.4i (devel/gcc48) has the support. Until a version is available which has -fstack-protector-strong support, be conservative and only enable support with 4.9+. Reviewed by: pfg X-MFC with: r288669, r289465 Differential Revision: https://reviews.freebsd.org/D3924
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=289481
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@ -150,11 +150,13 @@ CXXFLAGS.clang+= -Wno-c++11-extensions
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${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips"
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.if (${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 30500) || \
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(${COMPILER_TYPE} == "gcc" && \
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(${COMPILER_VERSION} == 40201 || ${COMPILER_VERSION} >= 40800))
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(${COMPILER_VERSION} == 40201 || ${COMPILER_VERSION} >= 40900))
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# Don't use -Wstack-protector as it breaks world with -Werror.
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SSP_CFLAGS?= -fstack-protector-strong
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CFLAGS+= ${SSP_CFLAGS}
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.else
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SSP_CFLAGS?= -fstack-protector
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.endif
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CFLAGS+= ${SSP_CFLAGS}
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.endif # SSP && !ARM && !MIPS
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# Allow user-specified additional warning flags, plus compiler specific flag overrides.
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