37 lines
1.7 KiB
CMake
37 lines
1.7 KiB
CMake
# determine the compiler to use for C programs
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# NOTE, a generator may set CMAKE_C_COMPILER before
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# loading this file to force a compiler.
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# use environment variable CCC first if defined by user, next use
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# the cmake variable CMAKE_GENERATOR_CC which can be defined by a generator
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# as a default compiler
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IF(NOT CMAKE_C_COMPILER)
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FIND_PROGRAM(CMAKE_C_COMPILER_FULLPATH NAMES $ENV{CC} ${CMAKE_GENERATOR_CC} gcc cc cl bcc )
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GET_FILENAME_COMPONENT(CMAKE_C_COMPILER ${CMAKE_C_COMPILER_FULLPATH} NAME_WE)
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# set this to notfound right after so that it is searched for each time this
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# file is included
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SET(CMAKE_C_COMPILER_FULLPATH NOTFOUND CACHE INTERNAL "full path to c compiler" FORCE)
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SET(CMAKE_C_COMPILER ${CMAKE_C_COMPILER} CACHE STRING "C++ compiler")
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ENDIF(NOT CMAKE_C_COMPILER)
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MARK_AS_ADVANCED(CMAKE_C_COMPILER)
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FIND_PROGRAM(CMAKE_AR NAMES ar PATHS /bin /usr/bin /usr/local/bin)
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FIND_PROGRAM(CMAKE_RANLIB NAMES ranlib PATHS /bin /usr/bin /usr/local/bin)
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IF(NOT CMAKE_RANLIB)
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SET(CMAKE_RANLIB : CACHE INTERNAL "noop for ranlib")
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ENDIF(NOT CMAKE_RANLIB)
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MARK_AS_ADVANCED(CMAKE_RANLIB)
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# test to see if the c compiler is gnu
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EXEC_PROGRAM(${CMAKE_C_COMPILER} ARGS -E ${CMAKE_ROOT}/Modules/CMakeTestGNU.c OUTPUT_VARIABLE CMAKE_COMPILER_OUTPUT RETURN_VALUE CMAKE_COMPILER_RETURN)
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IF(NOT CMAKE_COMPILER_RETURN)
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IF(${CMAKE_COMPILER_OUTPUT} MATCHES ".*THIS_IS_GNU.*" )
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SET(CMAKE_COMPILER_IS_GNUGCC 1)
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ENDIF(${CMAKE_COMPILER_OUTPUT} MATCHES ".*THIS_IS_GNU.*" )
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ENDIF(NOT CMAKE_COMPILER_RETURN)
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# configure variables set in this file for fast reload later on
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CONFIGURE_FILE(${CMAKE_ROOT}/Modules/CMakeCCompiler.cmake.in
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${PROJECT_BINARY_DIR}/CMakeCCompiler.cmake IMMEDIATE)
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MARK_AS_ADVANCED(CMAKE_AR CMAKE_C_COMPILER_FULLPATH)
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