76 lines
3.2 KiB
CMake
76 lines
3.2 KiB
CMake
# determine the compiler to use for C programs
|
|
# NOTE, a generator may set CMAKE_C_COMPILER before
|
|
# loading this file to force a compiler.
|
|
# use environment variable CCC first if defined by user, next use
|
|
# the cmake variable CMAKE_GENERATOR_CC which can be defined by a generator
|
|
# as a default compiler
|
|
|
|
IF(NOT CMAKE_C_COMPILER)
|
|
SET(CMAKE_CXX_COMPILER_INIT NOTFOUND)
|
|
|
|
# prefer the environment variable CC
|
|
IF($ENV{CC} MATCHES ".+")
|
|
GET_FILENAME_COMPONENT(CMAKE_C_COMPILER_INIT $ENV{CC} PROGRAM PROGRAM_ARGS CMAKE_C_FLAGS_ENV_INIT)
|
|
IF(EXISTS ${CMAKE_C_COMPILER_INIT})
|
|
ELSE(EXISTS ${CMAKE_C_COMPILER_INIT})
|
|
MESSAGE(FATAL_ERROR "Could not find compiler set in environment variable CC:\n$ENV{CC}.")
|
|
ENDIF(EXISTS ${CMAKE_C_COMPILER_INIT})
|
|
ENDIF($ENV{CC} MATCHES ".+")
|
|
|
|
# next try prefer the compiler specified by the generator
|
|
IF(CMAKE_GENERATOR_CC)
|
|
IF(NOT CMAKE_C_COMPILER_INIT)
|
|
SET(CMAKE_C_COMPILER_INIT ${CMAKE_GENERATOR_CC})
|
|
ENDIF(NOT CMAKE_C_COMPILER_INIT)
|
|
ENDIF(CMAKE_GENERATOR_CC)
|
|
|
|
# if no compiler has been specified yet, then look for one
|
|
IF(NOT CMAKE_C_COMPILER_INIT)
|
|
# if not in the envionment then search for the compiler in the path
|
|
SET(CMAKE_C_COMPILER_LIST gcc cc cl bcc xlc)
|
|
FIND_PROGRAM(CMAKE_C_COMPILER_FULLPATH NAMES ${CMAKE_C_COMPILER_LIST} )
|
|
GET_FILENAME_COMPONENT(CMAKE_C_COMPILER_INIT
|
|
${CMAKE_C_COMPILER_FULLPATH} NAME)
|
|
SET(CMAKE_C_COMPILER_FULLPATH "${CMAKE_C_COMPILER_FULLPATH}" CACHE INTERNAL "full path to the compiler cmake found")
|
|
ENDIF(NOT CMAKE_C_COMPILER_INIT)
|
|
|
|
SET(CMAKE_C_COMPILER ${CMAKE_C_COMPILER_INIT} CACHE STRING "C compiler")
|
|
ENDIF(NOT CMAKE_C_COMPILER)
|
|
MARK_AS_ADVANCED(CMAKE_C_COMPILER)
|
|
|
|
FIND_PROGRAM(CMAKE_AR NAMES ar )
|
|
|
|
FIND_PROGRAM(CMAKE_RANLIB NAMES ranlib)
|
|
IF(NOT CMAKE_RANLIB)
|
|
SET(CMAKE_RANLIB : CACHE INTERNAL "noop for ranlib")
|
|
ENDIF(NOT CMAKE_RANLIB)
|
|
MARK_AS_ADVANCED(CMAKE_RANLIB)
|
|
|
|
# test to see if the c compiler is gnu
|
|
EXEC_PROGRAM(${CMAKE_C_COMPILER} ARGS -E "\"${CMAKE_ROOT}/Modules/CMakeTestGNU.c\"" OUTPUT_VARIABLE CMAKE_COMPILER_OUTPUT RETURN_VALUE CMAKE_COMPILER_RETURN)
|
|
IF(NOT CMAKE_COMPILER_RETURN)
|
|
IF("${CMAKE_COMPILER_OUTPUT}" MATCHES ".*THIS_IS_GNU.*" )
|
|
SET(CMAKE_COMPILER_IS_GNUCC 1)
|
|
FILE(APPEND ${CMAKE_BINARY_DIR}/CMakeOutput.log
|
|
"Determining if the C compiler is GNU succeeded with "
|
|
"the following output:\n${CMAKE_COMPILER_OUTPUT}\n\n")
|
|
ELSE("${CMAKE_COMPILER_OUTPUT}" MATCHES ".*THIS_IS_GNU.*" )
|
|
FILE(APPEND ${CMAKE_BINARY_DIR}/CMakeOutput.log
|
|
"Determining if the C compiler is GNU failed with "
|
|
"the following output:\n${CMAKE_COMPILER_OUTPUT}\n\n")
|
|
ENDIF("${CMAKE_COMPILER_OUTPUT}" MATCHES ".*THIS_IS_GNU.*" )
|
|
IF("${CMAKE_COMPILER_OUTPUT}" MATCHES ".*THIS_IS_MINGW.*" )
|
|
SET(CMAKE_COMPILER_IS_MINGW 1)
|
|
ENDIF("${CMAKE_COMPILER_OUTPUT}" MATCHES ".*THIS_IS_MINGW.*" )
|
|
IF("${CMAKE_COMPILER_OUTPUT}" MATCHES ".*THIS_IS_CYGWIN.*" )
|
|
SET(CMAKE_COMPILER_IS_CYGWIN 1)
|
|
ENDIF("${CMAKE_COMPILER_OUTPUT}" MATCHES ".*THIS_IS_CYGWIN.*" )
|
|
|
|
ENDIF(NOT CMAKE_COMPILER_RETURN)
|
|
|
|
|
|
# configure variables set in this file for fast reload later on
|
|
CONFIGURE_FILE(${CMAKE_ROOT}/Modules/CMakeCCompiler.cmake.in
|
|
${CMAKE_BINARY_DIR}/CMakeCCompiler.cmake IMMEDIATE)
|
|
MARK_AS_ADVANCED(CMAKE_AR)
|