CMake/Modules/CMakeDetermineCCompiler.cmake

61 lines
2.5 KiB
CMake
Raw Normal View History

2002-10-22 18:34:07 +04:00
# 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
2002-10-22 18:34:07 +04:00
2002-11-09 01:24:45 +03:00
IF(NOT CMAKE_C_COMPILER)
2002-12-06 18:02:19 +03:00
SET(CMAKE_CXX_COMPILER_INIT NOTFOUND)
2002-12-06 18:09:41 +03:00
# prefer the environment variable CC
2002-11-19 20:18:12 +03:00
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 ${CMAKE_C_COMPILER_INIT})
MESSAGE(SEND_ERROR "Could not find compiler set in environment variable CC:\n$ENV{CC}.")
ENDIF(EXISTS ${CMAKE_C_COMPILER_INIT})
2002-12-06 18:02:19 +03:00
ENDIF($ENV{CC} MATCHES ".+")
2002-12-06 18:09:41 +03:00
# next try prefer the compiler specified by the generator
2002-12-06 18:02:19 +03:00
IF(CMAKE_GENERATOR_CC)
2002-12-06 18:16:21 +03:00
IF(NOT CMAKE_C_COMPILER_INIT)
SET(CMAKE_C_COMPILER_INIT ${CMAKE_GENERATOR_CC})
ENDIF(NOT CMAKE_C_COMPILER_INIT)
2002-12-06 18:02:19 +03:00
ENDIF(CMAKE_GENERATOR_CC)
2002-12-06 18:09:41 +03:00
# if no compiler has been specified yet, then look for one
2002-12-06 18:16:21 +03:00
IF(NOT CMAKE_C_COMPILER_INIT)
2002-11-19 23:55:19 +03:00
# if not in the envionment then search for the compiler in the path
2003-01-06 17:04:18 +03:00
SET(CMAKE_C_COMPILER_LIST gcc cc cl bcc xlc)
2002-11-19 23:55:19 +03:00
FIND_PROGRAM(CMAKE_C_COMPILER_FULLPATH NAMES ${CMAKE_C_COMPILER_LIST} )
GET_FILENAME_COMPONENT(CMAKE_C_COMPILER_INIT
${CMAKE_C_COMPILER_FULLPATH} NAME)
2002-12-06 18:16:21 +03:00
ENDIF(NOT CMAKE_C_COMPILER_INIT)
2002-12-06 18:09:41 +03:00
2002-11-19 20:18:12 +03:00
SET(CMAKE_C_COMPILER ${CMAKE_C_COMPILER_INIT} CACHE STRING "C compiler")
2002-11-09 01:24:45 +03:00
ENDIF(NOT CMAKE_C_COMPILER)
MARK_AS_ADVANCED(CMAKE_C_COMPILER)
2002-12-06 18:09:41 +03:00
2002-10-24 00:53:53 +04:00
FIND_PROGRAM(CMAKE_AR NAMES ar PATHS /bin /usr/bin /usr/local/bin)
FIND_PROGRAM(CMAKE_RANLIB NAMES ranlib PATHS /bin /usr/bin /usr/local/bin)
IF(NOT CMAKE_RANLIB)
SET(CMAKE_RANLIB : CACHE INTERNAL "noop for ranlib")
2002-10-24 00:53:53 +04:00
ENDIF(NOT CMAKE_RANLIB)
MARK_AS_ADVANCED(CMAKE_RANLIB)
2002-12-06 18:09:41 +03:00
2002-10-23 02:17:07 +04:00
# test to see if the c compiler is gnu
EXEC_PROGRAM(${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.*" )
2002-11-19 20:18:12 +03:00
SET(CMAKE_COMPILER_IS_GNUCC 1)
ENDIF("${CMAKE_COMPILER_OUTPUT}" MATCHES ".*THIS_IS_GNU.*" )
2002-10-23 02:17:07 +04:00
ENDIF(NOT CMAKE_COMPILER_RETURN)
2002-10-22 23:04:52 +04:00
2002-10-25 22:08:17 +04:00
# configure variables set in this file for fast reload later on
2002-10-24 00:53:53 +04:00
CONFIGURE_FILE(${CMAKE_ROOT}/Modules/CMakeCCompiler.cmake.in
${CMAKE_BINARY_DIR}/CMakeCCompiler.cmake IMMEDIATE)
MARK_AS_ADVANCED(CMAKE_AR CMAKE_C_COMPILER_FULLPATH)