checkccompilerflag.cmake

来自「编译器」· CMAKE 代码 · 共 22 行

# - Check whether the C compiler supports a given flag.
# CHECK_C_COMPILER_FLAG(FLAG VARIABLE)
#
#  FLAG - the compiler flag
#  VARIABLE - variable to store the result

# Copyright (c) 2006, Alexander Neundorf, <[e-mail]>
#
# Redistribution and use is allowed according to the terms of the BSD license.
# For details see the accompanying COPYING-CMAKE-SCRIPTS file.


INCLUDE(CheckCSourceCompiles)

MACRO (CHECK_C_COMPILER_FLAG _FLAG _RESULT)
   SET(SAFE_CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS}")
   SET(CMAKE_REQUIRED_DEFINITIONS "${_FLAG}")
   CHECK_C_SOURCE_COMPILES("int main() { return 0;}" ${_RESULT})
   SET (CMAKE_REQUIRED_DEFINITIONS "${SAFE_CMAKE_REQUIRED_DEFINITIONS}")
ENDMACRO (CHECK_C_COMPILER_FLAG)