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| author | NotTsunami <4589807+NotTsunami@users.noreply.github.com> | 2021-07-12 13:46:56 -0400 |
|---|---|---|
| committer | Martijn van Beurden <mvanb1@gmail.com> | 2022-04-13 17:37:50 +0200 |
| commit | 617efda90d046377bb911fb4f30e4f5445b7d781 (patch) | |
| tree | 98474d25d13711b0a0c59059b989efe722b247e6 /CMakeLists.txt | |
| parent | f5efd956d90cb8fce5f1a02d804ebb2150052c84 (diff) | |
| download | flac-617efda90d046377bb911fb4f30e4f5445b7d781.tar.gz | |
CMake: Make FORTIFY_SOURCE optional
* Also add in checking for libssp for MinGW
Diffstat (limited to 'CMakeLists.txt')
| -rw-r--r-- | CMakeLists.txt | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index 24d22d27..c8bc8174 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -17,6 +17,7 @@ option(BUILD_PROGRAMS "Build and install programs" ON) option(BUILD_EXAMPLES "Build and install examples" ON) option(BUILD_TESTING "Build tests" ON) option(BUILD_DOCS "Build and install doxygen documents" ON) +option(WITH_FORTIFY_SOURCE "Enable protection against buffer overflows" ON) option(WITH_STACK_PROTECTOR "Enable GNU GCC stack smash protection" ON) option(INSTALL_MANPAGES "Install MAN pages" ON) option(INSTALL_PKGCONFIG_MODULES "Install PkgConfig modules" ON) @@ -78,6 +79,15 @@ check_c_compiler_flag(-Wdeclaration-after-statement HAVE_DECL_AFTER_STMT_FLAG) check_c_compiler_flag(-mstackrealign HAVE_STACKREALIGN_FLAG) check_cxx_compiler_flag(-Weffc++ HAVE_WEFFCXX_FLAG) +if(MINGW AND (WITH_FORTIFY_SOURCE OR WITH_STACK_PROTECTOR)) + check_library_exists(ssp __stack_chk_fail "" HAVE_LIBSSP) + if(NOT HAVE_LIBSSP) + message(WARNING "Could not find libssp in MinGW, stack protection and/or FORTIFY_SOURCE are unavailable") + endif() +elseif(NOT MSVC) + set(HAVE_LIBSSP 1) +endif() + if(WITH_STACK_PROTECTOR) if(NOT MSVC) check_c_compiler_flag("-fstack-protector-strong" HAVE_STACK_PROTECTOR_FLAG) @@ -95,7 +105,13 @@ add_compile_options( $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<BOOL:${HAVE_WEFFCXX_FLAG}>>:-Weffc++> $<$<AND:$<COMPILE_LANGUAGE:C>,$<BOOL:${HAVE_DECL_AFTER_STMT_FLAG}>>:-Wdeclaration-after-statement>) -if(HAVE_STACK_PROTECTOR_FLAG) +if(HAVE_LIBSSP) # Implies WITH_FORTIFY_SOURCE + add_definitions(-D_FORTIFY_SOURCE=2) +else(WITH_FORTIFY_SOURCE) + add_definitions(-D_FORTIFY_SOURCE=1) +endif() + +if(HAVE_STACK_PROTECTOR_FLAG AND HAVE_LIBSSP) add_compile_options($<$<OR:$<COMPILE_LANGUAGE:C>,$<COMPILE_LANGUAGE:CXX>>:-fstack-protector-strong>) endif() |