109 lines
4.1 KiB
CMake
109 lines
4.1 KiB
CMake
|
|
# 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
|
|
#
|
|
# Sets the following variables:
|
|
# CMAKE_CXX_COMPILER
|
|
# CMAKE_COMPILER_IS_GNUCXX
|
|
# CMAKE_AR
|
|
# CMAKE_RANLIB
|
|
|
|
|
|
IF(NOT CMAKE_CXX_COMPILER)
|
|
SET(CMAKE_CXX_COMPILER_INIT NOTFOUND)
|
|
|
|
# prefer the environment variable CXX
|
|
IF($ENV{CXX} MATCHES ".+")
|
|
GET_FILENAME_COMPONENT(CMAKE_CXX_COMPILER_INIT $ENV{CXX} PROGRAM PROGRAM_ARGS CMAKE_CXX_FLAGS_ENV_INIT)
|
|
IF(CMAKE_CXX_FLAGS_ENV_INIT)
|
|
SET(CMAKE_CXX_COMPILER_ARG1 "${CMAKE_CXX_FLAGS_ENV_INIT}" CACHE STRING "First argument to CXX compiler")
|
|
ENDIF(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 ${CMAKE_CXX_COMPILER_INIT})
|
|
ENDIF($ENV{CXX} MATCHES ".+")
|
|
|
|
# next prefer the generator specified compiler
|
|
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)
|
|
|
|
# finally list compilers to try
|
|
IF(CMAKE_CXX_COMPILER_INIT)
|
|
SET(CMAKE_CXX_COMPILER_LIST ${CMAKE_CXX_COMPILER_INIT})
|
|
ELSE(CMAKE_CXX_COMPILER_INIT)
|
|
SET(CMAKE_CXX_COMPILER_LIST c++ g++ CC aCC cl bcc xlC)
|
|
ENDIF(CMAKE_CXX_COMPILER_INIT)
|
|
|
|
# Find the compiler.
|
|
FIND_PROGRAM(CMAKE_CXX_COMPILER NAMES ${CMAKE_CXX_COMPILER_LIST} DOC "C++ compiler")
|
|
IF(CMAKE_CXX_COMPILER_INIT AND NOT CMAKE_CXX_COMPILER)
|
|
SET(CMAKE_CXX_COMPILER "${CMAKE_CXX_COMPILER_INIT}" CACHE FILEPATH "C++ compiler" FORCE)
|
|
ENDIF(CMAKE_CXX_COMPILER_INIT AND NOT CMAKE_CXX_COMPILER)
|
|
ENDIF(NOT CMAKE_CXX_COMPILER)
|
|
MARK_AS_ADVANCED(CMAKE_CXX_COMPILER)
|
|
|
|
GET_FILENAME_COMPONENT(COMPILER_LOCATION "${CMAKE_CXX_COMPILER}" PATH)
|
|
|
|
FIND_PROGRAM(CMAKE_AR NAMES ar PATHS ${COMPILER_LOCATION})
|
|
MARK_AS_ADVANCED(CMAKE_AR)
|
|
|
|
FIND_PROGRAM(CMAKE_RANLIB NAMES ranlib)
|
|
IF(NOT CMAKE_RANLIB)
|
|
SET(CMAKE_RANLIB : CACHE INTERNAL "noop for ranlib")
|
|
ENDIF(NOT CMAKE_RANLIB)
|
|
MARK_AS_ADVANCED(CMAKE_RANLIB)
|
|
|
|
# This block was used before the compiler was identified by building a
|
|
# source file. Unless g++ crashes when building a small C++
|
|
# executable this should no longer be needed.
|
|
#
|
|
# The g++ that comes with BeOS 5 segfaults if you run "g++ -E"
|
|
# ("gcc -E" is fine), which throws up a system dialog box that hangs cmake
|
|
# until the user clicks "OK"...so for now, we just assume it's g++.
|
|
# IF(BEOS)
|
|
# SET(CMAKE_COMPILER_IS_GNUCXX 1)
|
|
# SET(CMAKE_COMPILER_IS_GNUCXX_RUN 1)
|
|
# ENDIF(BEOS)
|
|
|
|
# Build a small source file to identify the compiler.
|
|
IF(${CMAKE_GENERATOR} MATCHES "Visual Studio")
|
|
SET(CMAKE_CXX_COMPILER_ID_RUN 1)
|
|
SET(CMAKE_CXX_PLATFORM_ID "Windows")
|
|
|
|
# TODO: Set the compiler id. It is probably MSVC but
|
|
# the user may be using an integrated Intel compiler.
|
|
# SET(CMAKE_CXX_COMPILER_ID "MSVC")
|
|
ENDIF(${CMAKE_GENERATOR} MATCHES "Visual Studio")
|
|
IF(NOT CMAKE_CXX_COMPILER_ID_RUN)
|
|
SET(CMAKE_CXX_COMPILER_ID_RUN 1)
|
|
|
|
# Try to identify the compiler.
|
|
SET(CMAKE_CXX_COMPILER_ID)
|
|
INCLUDE(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerId.cmake)
|
|
CMAKE_DETERMINE_COMPILER_ID(CXX CXXFLAGS ${CMAKE_ROOT}/Modules/CMakeCXXCompilerId.cpp)
|
|
|
|
# Set old compiler and platform id variables.
|
|
IF("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
|
|
SET(CMAKE_COMPILER_IS_GNUCXX 1)
|
|
ENDIF("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
|
|
IF("${CMAKE_CXX_PLATFORM_ID}" MATCHES "MinGW")
|
|
SET(CMAKE_COMPILER_IS_MINGW 1)
|
|
ELSEIF("${CMAKE_CXX_PLATFORM_ID}" MATCHES "Cygwin")
|
|
SET(CMAKE_COMPILER_IS_CYGWIN 1)
|
|
ENDIF("${CMAKE_CXX_PLATFORM_ID}" MATCHES "MinGW")
|
|
ENDIF(NOT CMAKE_CXX_COMPILER_ID_RUN)
|
|
|
|
# configure all variables set in this file
|
|
CONFIGURE_FILE(${CMAKE_ROOT}/Modules/CMakeCXXCompiler.cmake.in
|
|
${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeCXXCompiler.cmake IMMEDIATE)
|
|
|
|
SET(CMAKE_CXX_COMPILER_ENV_VAR "CXX")
|