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Merge pull request #656 from heinrich5991/pr_ddnet_cmake_check_fortify_source

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CMakeLists.txt: Check for _FORTIFY_SOURCE before defining it
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Learath2 2017-03-07 17:04:44 +01:00 committed by GitHub
parent 3c22a3279e fad7989243
commit acd8bc1fe0
1 changed files with 9 additions and 1 deletions
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10
CMakeLists.txt
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@ -123,6 +123,12 @@ else()
set(PLATFORM_LIBS)
endif()
if(CMAKE_CXX_COMPILER_ID MATCHES Clang OR CMAKE_CXX_COMPILER_ID MATCHES GNU)
include(CheckSymbolExists)
check_symbol_exists(_FORTIFY_SOURCE "" FORTIFY_SOURCE_DEFINED)
endif()
########################################################################
# INITALIZE TARGET LISTS
########################################################################
@ -408,7 +414,9 @@ foreach(target ${TARGETS})
target_compile_options(${target} PRIVATE /wd4996) # Use of non-_s functions.
elseif(CMAKE_CXX_COMPILER_ID MATCHES Clang OR CMAKE_CXX_COMPILER_ID MATCHES GNU)
target_compile_options(${target} PRIVATE -fstack-protector-all) # Protect the stack pointer.
target_compile_definitions(${target} PRIVATE $<$<NOT:$<CONFIG:Debug>>:_FORTIFY_SOURCE=1>) # Detect some buffer overflows.
if(NOT FORTIFY_SOURCE_DEFINED)
target_compile_definitions(${target} PRIVATE $<$<NOT:$<CONFIG:Debug>>:_FORTIFY_SOURCE=1>) # Detect some buffer overflows.
endif()
endif()
endforeach()