CMake/Modules/CMakeDetermineASMCompiler.cmake
Alex Neundorf b333779e34 Detect a COMPILER_ID also for ASM.
For assembler, the "compiler ID" cannot be detected by "compiling" a
source file, since there is not source file all assemblers understand.
Instead the function CMAKE_DETERMINE_COMPILER_ID_VENDOR() is used to
run the assembler and check its output.
For this the CMAKE_DETERMINE_COMPILER_ID_VENDOR() function had to be
extended so that it creates the run directory if it doesn't exist yet.

In CMakeASMInformation.cmake now also CMAKE_ASM_COMPILER_ID is used
(but there are no such files yet, will come with the support for the
IAR toolchain).

Alex
2010-08-15 16:36:38 +02:00

114 lines
5.3 KiB
CMake

#=============================================================================
# Copyright 2007-2009 Kitware, Inc.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
# determine the compiler to use for ASM programs
IF(NOT CMAKE_ASM${ASM_DIALECT}_COMPILER)
# prefer the environment variable ASM
IF($ENV{ASM${ASM_DIALECT}} MATCHES ".+")
SET(CMAKE_ASM${ASM_DIALECT}_COMPILER_INIT "$ENV{ASM${ASM_DIALECT}}")
ENDIF($ENV{ASM${ASM_DIALECT}} MATCHES ".+")
# finally list compilers to try
IF(CMAKE_ASM${ASM_DIALECT}_COMPILER_INIT)
SET(CMAKE_ASM${ASM_DIALECT}_COMPILER_LIST ${CMAKE_ASM${ASM_DIALECT}_COMPILER_INIT})
ELSE(CMAKE_ASM${ASM_DIALECT}_COMPILER_INIT)
SET(CMAKE_ASM${ASM_DIALECT}_COMPILER_LIST ${_CMAKE_TOOLCHAIN_PREFIX}as ${_CMAKE_TOOLCHAIN_PREFIX}gas)
ENDIF(CMAKE_ASM${ASM_DIALECT}_COMPILER_INIT)
# Find the compiler.
IF (_CMAKE_USER_CXX_COMPILER_PATH OR _CMAKE_USER_C_COMPILER_PATH)
FIND_PROGRAM(CMAKE_ASM${ASM_DIALECT}_COMPILER NAMES ${CMAKE_ASM${ASM_DIALECT}_COMPILER_LIST} PATHS ${_CMAKE_USER_C_COMPILER_PATH} ${_CMAKE_USER_CXX_COMPILER_PATH} DOC "Assembler" NO_DEFAULT_PATH)
ENDIF (_CMAKE_USER_CXX_COMPILER_PATH OR _CMAKE_USER_C_COMPILER_PATH)
FIND_PROGRAM(CMAKE_ASM${ASM_DIALECT}_COMPILER NAMES ${CMAKE_ASM${ASM_DIALECT}_COMPILER_LIST} PATHS ${_CMAKE_TOOLCHAIN_LOCATION} DOC "Assembler")
ELSE(NOT CMAKE_ASM${ASM_DIALECT}_COMPILER)
# we only get here if CMAKE_ASM${ASM_DIALECT}_COMPILER was specified using -D or a pre-made CMakeCache.txt
# (e.g. via ctest) or set in CMAKE_TOOLCHAIN_FILE
#
# if a compiler was specified by the user but without path,
# now try to find it with the full path
# if it is found, force it into the cache,
# if not, don't overwrite the setting (which was given by the user) with "NOTFOUND"
GET_FILENAME_COMPONENT(_CMAKE_USER_ASM${ASM_DIALECT}_COMPILER_PATH "${CMAKE_ASM${ASM_DIALECT}_COMPILER}" PATH)
IF(NOT _CMAKE_USER_ASM${ASM_DIALECT}_COMPILER_PATH)
FIND_PROGRAM(CMAKE_ASM${ASM_DIALECT}_COMPILER_WITH_PATH NAMES ${CMAKE_ASM${ASM_DIALECT}_COMPILER})
MARK_AS_ADVANCED(CMAKE_ASM${ASM_DIALECT}_COMPILER_WITH_PATH)
IF(CMAKE_ASM${ASM_DIALECT}_COMPILER_WITH_PATH)
SET(CMAKE_ASM${ASM_DIALECT}_COMPILER ${CMAKE_ASM${ASM_DIALECT}_COMPILER_WITH_PATH} CACHE FILEPATH "Assembler" FORCE)
ENDIF(CMAKE_ASM${ASM_DIALECT}_COMPILER_WITH_PATH)
ENDIF(NOT _CMAKE_USER_ASM${ASM_DIALECT}_COMPILER_PATH)
ENDIF(NOT CMAKE_ASM${ASM_DIALECT}_COMPILER)
MARK_AS_ADVANCED(CMAKE_ASM${ASM_DIALECT}_COMPILER)
IF (NOT _CMAKE_TOOLCHAIN_LOCATION)
GET_FILENAME_COMPONENT(_CMAKE_TOOLCHAIN_LOCATION "${CMAKE_ASM${ASM_DIALECT}_COMPILER}" PATH)
ENDIF (NOT _CMAKE_TOOLCHAIN_LOCATION)
IF(NOT CMAKE_ASM${ASM_DIALECT}_COMPILER_ID)
# Table of per-vendor compiler id flags with expected output.
LIST(APPEND CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDORS GNU )
SET(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_FLAGS_GNU "--version")
SET(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID_VENDOR_REGEX_GNU "GNU assembler")
CMAKE_DETERMINE_COMPILER_ID_VENDOR(ASM${ASM_DIALECT})
IF(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID)
MESSAGE(STATUS "The ASM${ASM_DIALECT} compiler identification is ${CMAKE_ASM${ASM_DIALECT}_COMPILER_ID}")
ELSE(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID)
MESSAGE(STATUS "The ASM${ASM_DIALECT} compiler identification is unknown")
ENDIF(CMAKE_ASM${ASM_DIALECT}_COMPILER_ID)
ENDIF()
# If we have a gas/as cross compiler, they have usually some prefix, like
# e.g. powerpc-linux-gas, arm-elf-gas or i586-mingw32msvc-gas .
# The other tools of the toolchain usually have the same prefix
# NAME_WE cannot be used since then this test will fail for names lile
# "arm-unknown-nto-qnx6.3.0-gas.exe", where BASENAME would be
# "arm-unknown-nto-qnx6" instead of the correct "arm-unknown-nto-qnx6.3.0-"
IF (NOT _CMAKE_TOOLCHAIN_PREFIX)
GET_FILENAME_COMPONENT(COMPILER_BASENAME "${CMAKE_ASM${ASM_DIALECT}_COMPILER}" NAME)
IF (COMPILER_BASENAME MATCHES "^(.+-)g?as(\\.exe)?$")
STRING(REGEX REPLACE "^(.+-)g?as(\\.exe)?$" "\\1" _CMAKE_TOOLCHAIN_PREFIX "${COMPILER_BASENAME}")
ENDIF (COMPILER_BASENAME MATCHES "^(.+-)g?as(\\.exe)?$")
ENDIF (NOT _CMAKE_TOOLCHAIN_PREFIX)
INCLUDE(CMakeFindBinUtils)
SET(CMAKE_ASM${ASM_DIALECT}_COMPILER_ENV_VAR "ASM${ASM_DIALECT}")
IF(CMAKE_ASM${ASM_DIALECT}_COMPILER)
MESSAGE(STATUS "Found assembler: ${CMAKE_ASM${ASM_DIALECT}_COMPILER}")
ELSE(CMAKE_ASM${ASM_DIALECT}_COMPILER)
MESSAGE(STATUS "Didn't find assembler")
ENDIF(CMAKE_ASM${ASM_DIALECT}_COMPILER)
SET(_CMAKE_ASM_COMPILER "${CMAKE_ASM${ASM_DIALECT}_COMPILER}")
SET(_CMAKE_ASM_COMPILER_ARG1 "${CMAKE_ASM${ASM_DIALECT}_COMPILER_ARG1}")
SET(_CMAKE_ASM_COMPILER_ENV_VAR "${CMAKE_ASM${ASM_DIALECT}_COMPILER_ENV_VAR}")
# configure variables set in this file for fast reload later on
CONFIGURE_FILE(${CMAKE_ROOT}/Modules/CMakeASMCompiler.cmake.in
${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeASM${ASM_DIALECT}Compiler.cmake IMMEDIATE @ONLY)
SET(_CMAKE_ASM_COMPILER)
SET(_CMAKE_ASM_COMPILER_ARG1)
SET(_CMAKE_ASM_COMPILER_ENV_VAR)