diff --git a/cmake/compilerFlags.cmake b/cmake/compilerFlags.cmake index 0418aa61..28472e4a 100644 --- a/cmake/compilerFlags.cmake +++ b/cmake/compilerFlags.cmake @@ -1,4 +1,5 @@ # These flags applies to exiv2lib, the applications, and to the xmp code +include(CheckCCompilerFlag) if ( MINGW OR UNIX OR MSYS ) # MINGW, Linux, APPLE, CYGWIN if (${CMAKE_CXX_COMPILER_ID} STREQUAL GNU) @@ -22,16 +23,18 @@ if ( MINGW OR UNIX OR MSYS ) # MINGW, Linux, APPLE, CYGWIN if (COMPILER_IS_GCC OR COMPILER_IS_CLANG) - - # This fails under Fedora, MinGW GCC 8.3.0 and CYGWIN/MSYS 9.3.0 - if (NOT (MINGW OR CMAKE_HOST_SOLARIS OR CYGWIN OR MSYS) ) - if (COMPILER_IS_GCC AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 8.0) - add_compile_options(-fstack-clash-protection -fcf-protection) + # This fails under Fedora - MinGW - Gcc 8.3 + if (NOT MINGW) + check_c_compiler_flag(-fstack-clash-protection HAS_FSTACK_CLASH_PROTECTION) + check_c_compiler_flag(-fcf-protection HAS_FCF_PROTECTION) + check_c_compiler_flag(-fstack-protector-strong HAS_FSTACK_PROTECTOR_STRONG) + if(HAS_FSTACK_CLASH_PROTECTION) + add_compile_options(-fstack-clash-protection) endif() - - if( (COMPILER_IS_GCC AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 5.0) # Not in GCC 4.8 - OR (COMPILER_IS_CLANG AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 3.7) # Not in Clang 3.4.2 - ) + if(HAS_FCF_PROTECTION) + add_compile_options(-fcf-protection) + endif() + if(HAS_FSTACK_PROTECTOR_STRONG) add_compile_options(-fstack-protector-strong) endif() endif()