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Merge pull request #1686 from jszakmeister/include-opts-in-fortify-check

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build: include the flags for the build type in the _FORTIFY_SOURCE check
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John Szakmeister 2014-12-18 04:14:14 -05:00
commit 379dcd7d7f
1 changed files with 11 additions and 0 deletions
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11
CMakeLists.txt
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@ -74,6 +74,17 @@ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wconversion")
# does not work with Neovim due to some uses of dynamically-sized structures.
# See https://github.com/neovim/neovim/issues/223 for details.
include(CheckCSourceCompiles)
# Include the build type's default flags in the check for _FORTIFY_SOURCE,
# otherwise we may incorrectly identify the level as acceptable and find out
# later that it was not when optimizations were enabled. CFLAGS is applied
# even though you don't see it in CMAKE_REQUIRED_FLAGS.
set(INIT_FLAGS_NAME CMAKE_C_FLAGS_${CMAKE_BUILD_TYPE})
string(TOUPPER ${INIT_FLAGS_NAME} INIT_FLAGS_NAME)
if(${INIT_FLAGS_NAME})
set(CMAKE_REQUIRED_FLAGS "${${INIT_FLAGS_NAME}}")
endif()
check_c_source_compiles("
#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 1
#error \"_FORTIFY_SOURCE > 1\"