CMake/Modules/CMakeDetermineCXXCompiler.c...

64 lines
2.8 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_CXX_COMPILER before
# loading this file to force a compiler.
# use environment variable CXX first if defined by user, next use
# the cmake variable CMAKE_GENERATOR_CXX 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_CXX_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 CXX
2002-11-19 20:18:12 +03:00
IF($ENV{CXX} MATCHES ".+")
GET_FILENAME_COMPONENT(CMAKE_CXX_COMPILER_INIT $ENV{CXX} PROGRAM PROGRAM_ARGS CMAKE_CXX_FLAGS_ENV_INIT)
IF(EXISTS ${CMAKE_CXX_COMPILER_INIT})
ELSE(EXISTS ${CMAKE_CXX_COMPILER_INIT})
MESSAGE(FATAL_ERROR "Could not find compiler set in environment variable CXX:\n$ENV{CXX}.\n${CMAKE_CXX_COMPILER_INIT}")
ENDIF(EXISTS ${CMAKE_CXX_COMPILER_INIT})
2002-12-06 18:02:19 +03:00
ENDIF($ENV{CXX} MATCHES ".+")
2002-12-06 18:09:41 +03:00
# next prefer the generator specified compiler
2002-12-06 18:02:19 +03:00
IF(CMAKE_GENERATOR_CXX)
IF(NOT CMAKE_CXX_COMPILER_INIT)
SET(CMAKE_CXX_COMPILER_INIT ${CMAKE_GENERATOR_CXX})
ENDIF(NOT CMAKE_CXX_COMPILER_INIT)
ENDIF(CMAKE_GENERATOR_CXX)
2002-12-06 18:09:41 +03:00
# if no compiler has been found yet, then try to find one
2002-12-06 18:02:19 +03:00
IF(NOT CMAKE_CXX_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_CXX_COMPILER_LIST c++ g++ CC aCC cl bcc xlC)
2002-11-19 23:55:19 +03:00
FIND_PROGRAM(CMAKE_CXX_COMPILER_FULLPATH NAMES ${CMAKE_CXX_COMPILER_LIST})
GET_FILENAME_COMPONENT(CMAKE_CXX_COMPILER_INIT
${CMAKE_CXX_COMPILER_FULLPATH} NAME)
SET(CMAKE_CXX_COMPILER_FULLPATH "${CMAKE_CXX_COMPILER_FULLPATH}" CACHE INTERNAL "full path to the compiler cmake found")
2002-12-06 18:02:19 +03:00
ENDIF(NOT CMAKE_CXX_COMPILER_INIT)
2002-11-19 20:18:12 +03:00
SET(CMAKE_CXX_COMPILER ${CMAKE_CXX_COMPILER_INIT}
CACHE STRING "C++ compiler")
2002-11-09 01:24:45 +03:00
ENDIF(NOT CMAKE_CXX_COMPILER)
MARK_AS_ADVANCED(CMAKE_CXX_COMPILER)
2002-10-23 02:17:07 +04:00
2002-10-23 02:17:07 +04:00
# test to see if the cxx compiler is gnu
EXEC_PROGRAM(${CMAKE_CXX_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_GNUCXX 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("${CMAKE_COMPILER_OUTPUT}" MATCHES ".*THIS_IS_GNU.*" )
2002-10-23 02:17:07 +04:00
ENDIF(NOT CMAKE_COMPILER_RETURN)
2002-10-24 00:53:53 +04:00
2002-10-25 22:08:17 +04:00
# configure all variables set in this file
CONFIGURE_FILE(${CMAKE_ROOT}/Modules/CMakeCXXCompiler.cmake.in
${CMAKE_BINARY_DIR}/CMakeCXXCompiler.cmake IMMEDIATE)