1 # This macro attempts to parse the version string of the C compiler in use.
2 # Currently supported are only compilers that accept "-dumpversion" argument:
3 # gcc, Intel Compiler (on Linux and Mac OS), Open64, EkoPath.
5 # C_COMPILER_VERSION - version string of the current C compiler (CMAKE_C_COMPILER)
6 # CXX_COMPILER_VERSION - version string of the current C++ compiler (CMAKE_CXX_COMPILER)
8 macro(get_compiler_version)
9 if(NOT C_COMPILER_VERSION)
10 execute_process(COMMAND ${CMAKE_C_COMPILER} -dumpversion
11 RESULT_VARIABLE _cc_dumpversion_res
12 OUTPUT_VARIABLE _cc_dumpversion_out
13 ERROR_VARIABLE _cc_dumpversion_err
14 OUTPUT_STRIP_TRAILING_WHITESPACE)
16 if (${_cc_dumpversion_res} EQUAL 0)
17 SET(C_COMPILER_VERSION ${_cc_dumpversion_out}
18 CACHE STRING "C compiler verstion string" FORCE)
20 SET(C_COMPILER_VERSION ""
21 CACHE STRING "C compiler verstion string not available" FORCE)
25 if(NOT CXX_COMPILER_VERSION AND CMAKE_CXX_COMPILER_LOADED)
26 execute_process(COMMAND ${CMAKE_CXX_COMPILER} -dumpversion
27 RESULT_VARIABLE _cxx_dumpversion_res
28 OUTPUT_VARIABLE _cxx_dumpversion_out
29 ERROR_VARIABLE _cxx_dumpversion_err
30 OUTPUT_STRIP_TRAILING_WHITESPACE)
32 if (${_cxx_dumpversion_res} EQUAL 0)
33 SET(CXX_COMPILER_VERSION ${_cxx_dumpversion_out}
34 CACHE STRING "C++ compiler verstion string" FORCE)
36 SET(CXX_COMPILER_VERSION ""
37 CACHE STRING "C++ compiler verstion string not available" FORCE)
41 if (NOT "${C_COMPILER_VERSION}" STREQUAL "${CXX_COMPILER_VERSION}" AND CMAKE_CXX_COMPILER_LOADED)
42 message(WARNING "The version string of the C and C++ compilers does not match!")
45 mark_as_advanced(C_COMPILER_VERSION CXX_COMPILER_VERSION)