Fix compiler flags check error (#88)

CMakeLists.txt

@@ -74,21 +74,24 @@ if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
 endif()
 foreach(FLAG ${FLAGS})
  string(REGEX REPLACE "[-=+]" "_" F ${FLAG})
- check_c_compiler_flag(${FLAG} ${F})
- if(${F})
+ set(C_F C_${F})
+ set(CXX_F CXX_${F})
+ check_c_compiler_flag(${FLAG} ${C_F})
+ if(${C_F})
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${FLAG}")
  endif()
- check_cxx_compiler_flag(${FLAG} ${F})
- if(${F})
+ check_cxx_compiler_flag(${FLAG} ${CXX_F})
+ if(${CXX_F})
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${FLAG}")
  endif()
 endforeach()
 
 # Set CXX flags
 foreach(FLAG -Wno-c++98-compat -Wno-global-constructors)
  string(REGEX REPLACE "[-=+]" "_" F ${FLAG})
- check_cxx_compiler_flag(${FLAG} ${F})
- if(${F})
+ set(CXX_F CXX_${F})
+ check_cxx_compiler_flag(${FLAG} ${CXX_F})
+ if(${CXX_F})
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${FLAG}")
  endif()
 endforeach()
@@ -128,8 +131,8 @@ if(CMAKE_BUILD_TYPE MATCHES Debug)
  HAVE_ASAN_ADDRESS_IS_POISONED)
  cmake_reset_check_state()
  set(CMAKE_REQUIRED_FLAGS -fsanitize=address,undefined,leak)
- check_c_compiler_flag("" _fsanitize_address_undefined_leak)
- if(_fsanitize_address_undefined_leak)
+ check_c_compiler_flag("" C_fsanitize_address_undefined_leak)
+ if(C_fsanitize_address_undefined_leak)
  string(CONCAT CMAKE_C_FLAGS "${CMAKE_C_FLAGS} "
  "-fsanitize=address,undefined,leak")
  string(CONCAT CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} "
@@ -148,12 +151,14 @@ if(CMAKE_BUILD_TYPE MATCHES Debug)
  )
  foreach(FLAG ${FLAGS})
  string(REGEX REPLACE "[-=+]" "_" F ${FLAG})
- check_c_compiler_flag(${FLAG} ${F})
- if(${F})
+ set(C_F C_${F})
+ set(CXX_F CXX_${F})
+ check_c_compiler_flag(${FLAG} ${C_F})
+ if(${C_F})
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${FLAG}")
  endif()
- check_cxx_compiler_flag(${FLAG} ${F})
- if(${F})
+ check_cxx_compiler_flag(${FLAG} ${CXX_F})
+ if(${CXX_F})
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${FLAG}")
  endif()
  endforeach()