2 # This file is part of the GROMACS molecular simulation package.
4 # Copyright (c) 2012,2013, by the GROMACS development team, led by
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30 # official version at http://www.gromacs.org.
32 # To help us fund GROMACS development, we humbly ask that you cite
33 # the research papers on the package. Check out http://www.gromacs.org.
35 # This macro attempts to parse the version string of the C compiler in use.
36 # With CMake 2.8.9 CMake provides a CMAKE_[C|CXX]_COMPILER_VERSION variable
37 # so we will use that if available.
39 # Currently supported are:
40 # - with cmake >2.8.8 all compilers supported by CMake
41 # - with cmake <=2.8.8: compilers that accept "-dumpversion" argument:
42 # gcc, Intel Compiler (on Linux and Mac OS), Open64, EkoPath, clang
43 # (and probably other gcc-compatible compilers).
44 # - with cmake <=2.8.8: xlC is not supported (it does not take -dumpversion,
45 # but fortunately so far GROMACS never needs to know the version number)
47 # C_COMPILER_VERSION - version string of the current C compiler (CMAKE_C_COMPILER)
48 # CXX_COMPILER_VERSION - version string of the current C++ compiler (CMAKE_CXX_COMPILER)
50 macro(get_compiler_version)
51 if(NOT C_COMPILER_VERSION)
52 set(_cc_dumpversion_res 0)
53 if (DEFINED CMAKE_C_COMPILER_VERSION AND CMAKE_VERSION VERSION_GREATER 2.8.8)
54 set(_cc_version ${CMAKE_C_COMPILER_VERSION})
55 elseif (CMAKE_C_COMPILER_ID MATCHES "XL")
56 set(_cc_dumpversion_res 1)
58 execute_process(COMMAND ${CMAKE_C_COMPILER} -dumpversion
59 RESULT_VARIABLE _cc_dumpversion_res
60 OUTPUT_VARIABLE _cc_version
61 OUTPUT_STRIP_TRAILING_WHITESPACE)
64 if (${_cc_dumpversion_res} EQUAL 0)
65 SET(C_COMPILER_VERSION ${_cc_version}
66 CACHE STRING "C compiler version" FORCE)
68 SET(C_COMPILER_VERSION ""
69 CACHE STRING "C compiler version not available" FORCE)
73 if(NOT CXX_COMPILER_VERSION AND CMAKE_CXX_COMPILER_LOADED)
74 set(_cxx_dumpversion_res 0)
75 if (DEFINED CMAKE_CXX_COMPILER_VERSION AND CMAKE_VERSION VERSION_GREATER 2.8.8)
76 set(_cxx_version ${CMAKE_CXX_COMPILER_VERSION})
77 elseif (CMAKE_CXX_COMPILER_ID MATCHES "XL")
78 set(_cxx_dumpversion_res 1)
80 execute_process(COMMAND ${CMAKE_CXX_COMPILER} -dumpversion
81 RESULT_VARIABLE _cxx_dumpversion_res
82 OUTPUT_VARIABLE _cxx_version
83 OUTPUT_STRIP_TRAILING_WHITESPACE)
86 if (${_cxx_dumpversion_res} EQUAL 0)
87 SET(CXX_COMPILER_VERSION ${_cxx_version}
88 CACHE STRING "C++ compiler version string" FORCE)
90 SET(CXX_COMPILER_VERSION ""
91 CACHE STRING "C++ compiler version string not available" FORCE)
95 if (NOT "${C_COMPILER_VERSION}" STREQUAL "${CXX_COMPILER_VERSION}" AND CMAKE_CXX_COMPILER_LOADED)
96 message(WARNING "The version of the C and C++ compilers does not match. Note that mixing different C/C++ compilers can cause problems!")
99 mark_as_advanced(C_COMPILER_VERSION CXX_COMPILER_VERSION)
102 # This macro attempts to get a reasonable version string for a compiler,
103 # and also extracts compiler flags.
106 # LANGUAGE - C or CXX, the compiler to check for
107 # BUILD_COMPILER - [output variable] string with compiler path, ID and
108 # some compiler-provided information
109 # BUILD_FLAGS - [output variable] flags for the compiler
111 macro(get_compiler_info LANGUAGE BUILD_COMPILER BUILD_FLAGS)
112 if (CMAKE_C_COMPILER_ID MATCHES "XL")
113 set(_flag_to_query_version "-qversion")
115 set(_flag_to_query_version "--version")
117 execute_process(COMMAND ${CMAKE_${LANGUAGE}_COMPILER} ${_flag_to_query_version}
118 RESULT_VARIABLE _exec_result
119 OUTPUT_VARIABLE _compiler_version
120 ERROR_VARIABLE _compiler_version)
123 # Try executing just the compiler command, since --version failed
124 execute_process(COMMAND ${CMAKE_${LANGUAGE}_COMPILER}
125 RESULT_VARIABLE _exec_result
126 OUTPUT_VARIABLE _compiler_version
127 ERROR_VARIABLE _compiler_version)
129 if(NOT "${_compiler_version}" STREQUAL "")
130 string(REGEX MATCH "[^\n]+" _compiler_version "${_compiler_version}")
133 set(${BUILD_COMPILER}
134 "${CMAKE_${LANGUAGE}_COMPILER} ${CMAKE_${LANGUAGE}_COMPILER_ID} ${_compiler_version}")
135 set(_build_flags "${CMAKE_${LANGUAGE}_FLAGS}")
136 string(TOUPPER ${CMAKE_BUILD_TYPE} _build_type)
137 set(_build_flags "${_build_flags} ${CMAKE_${LANGUAGE}_FLAGS_${_build_type}}")
138 set(${BUILD_FLAGS} ${_build_flags})