Commit 9a083bce authored by Stephen Kelly's avatar Stephen Kelly

Project: Split the compiler id detection into a separate function.

This can be extended with parameters to control the output and re-used
in other contexts.
parent 9d285600
#=============================================================================
# Copyright 2014 Stephen Kelly <steveire@gmail.com>
#
# 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.)
function(_readFile file)
include(${file})
get_filename_component(name ${file} NAME_WE)
string(REGEX REPLACE "-.*" "" CompilerId ${name})
set(_compiler_id_version_compute_${CompilerId} ${_compiler_id_version_compute} PARENT_SCOPE)
set(_compiler_id_pp_test_${CompilerId} ${_compiler_id_pp_test} PARENT_SCOPE)
endfunction()
function(compiler_id_detection outvar lang)
file(GLOB lang_files
"${CMAKE_ROOT}/Modules/Compiler/*-${lang}-DetermineCompiler.cmake")
if (NOT lang STREQUAL Fortran)
file(GLOB non_lang_files
"${CMAKE_ROOT}/Modules/Compiler/*-DetermineCompiler.cmake")
endif()
set(files ${lang_files} ${non_lang_files})
if (files)
foreach(file ${files})
_readFile(${file})
endforeach()
set(ordered_compilers
# Order is relevant here. For example, compilers which pretend to be
# GCC must appear before the actual GCC.
Comeau
Intel
PathScale
AppleClang
Clang
Embarcadero
Borland
Watcom
OpenWatcom
SunPro
HP
Compaq
zOS
XL
VisualAge
PGI
Cray
TI
SCO
GNU
MSVC
ADSP
IAR
MIPSpro)
set(pp_if "#if")
set(CMAKE_${lang}_COMPILER_ID_CONTENT "/* Version number components: V=Version, R=Revision, P=Patch
Version date components: YYYY=Year, MM=Month, DD=Day */\n")
foreach(Id ${ordered_compilers})
if (NOT _compiler_id_pp_test_${Id})
message(FATAL_ERROR "No preprocessor test for \"${Id}\"")
endif()
set(id_content "${pp_if} ${_compiler_id_pp_test_${Id}}\n# define COMPILER_ID \"${Id}\"${_compiler_id_version_compute_${Id}}\n")
set(CMAKE_${lang}_COMPILER_ID_CONTENT "${CMAKE_${lang}_COMPILER_ID_CONTENT}\n${id_content}")
set(pp_if "#elif")
endforeach()
set(platform_compiler_detection "
/* These compilers are either not known or too old to define an
identification macro. Try to identify the platform and guess that
it is the native compiler. */
#elif defined(__sgi)
# define COMPILER_ID \"MIPSpro\"
#elif defined(__hpux) || defined(__hpua)
# define COMPILER_ID \"HP\"
#else /* unknown compiler */
# define COMPILER_ID \"\"
#endif")
set(CMAKE_${lang}_COMPILER_ID_CONTENT "${CMAKE_${lang}_COMPILER_ID_CONTENT}\n${platform_compiler_detection}")
endif()
set(${outvar} ${CMAKE_${lang}_COMPILER_ID_CONTENT} PARENT_SCOPE)
endfunction()
......@@ -97,13 +97,7 @@ function(CMAKE_DETERMINE_COMPILER_ID lang flagvar src)
set(CMAKE_${lang}_SIMULATE_VERSION "${CMAKE_${lang}_SIMULATE_VERSION}" PARENT_SCOPE)
endfunction()
function(_readFile file)
include(${file})
get_filename_component(name ${file} NAME_WE)
string(REGEX REPLACE "-.*" "" CompilerId ${name})
set(_compiler_id_version_compute_${CompilerId} ${_compiler_id_version_compute} PARENT_SCOPE)
set(_compiler_id_pp_test_${CompilerId} ${_compiler_id_pp_test} PARENT_SCOPE)
endfunction()
include(CMakeCompilerIdDetection)
#-----------------------------------------------------------------------------
# Function to write the compiler id source file.
......@@ -111,73 +105,7 @@ function(CMAKE_DETERMINE_COMPILER_ID_WRITE lang src)
find_file(src_in ${src}.in PATHS ${CMAKE_ROOT}/Modules ${CMAKE_MODULE_PATH} NO_DEFAULT_PATH NO_CMAKE_FIND_ROOT_PATH)
file(READ ${src_in} ID_CONTENT_IN)
file(GLOB lang_files
"${CMAKE_ROOT}/Modules/Compiler/*-${lang}-DetermineCompiler.cmake")
if (NOT lang STREQUAL Fortran)
file(GLOB non_lang_files
"${CMAKE_ROOT}/Modules/Compiler/*-${lang}-DetermineCompiler.cmake")
endif()
set(files ${lang_files} ${non_lang_files})
if (files)
foreach(file ${files})
_readFile(${file})
endforeach()
set(pp_if "#if")
set(CMAKE_CXX_COMPILER_ID_CONTENT "/* Version number components: V=Version, R=Revision, P=Patch
Version date components: YYYY=Year, MM=Month, DD=Day */\n")
foreach(Id
Comeau
Intel
PathScale
AppleClang
Clang
Embarcadero
Borland
Watcom
OpenWatcom
SunPro
HP
Compaq
zOS
XL
VisualAge
PGI
Cray
TI
SCO
GNU
MSVC
ADSP
IAR
MIPSpro)
if (NOT _compiler_id_pp_test_${Id})
message(FATAL_ERROR "No test for \"${Id}\"")
endif()
set(id_content "${pp_if} ${_compiler_id_pp_test_${Id}}\n# define COMPILER_ID \"${Id}\"${_compiler_id_version_compute_${Id}}\n")
set(CMAKE_CXX_COMPILER_ID_CONTENT "${CMAKE_CXX_COMPILER_ID_CONTENT}\n${id_content}")
set(pp_if "#elif")
endforeach()
set(platform_compiler_detection "
/* These compilers are either not known or too old to define an
identification macro. Try to identify the platform and guess that
it is the native compiler. */
#elif defined(__sgi)
# define COMPILER_ID \"MIPSpro\"
#elif defined(__hpux) || defined(__hpua)
# define COMPILER_ID \"HP\"
#else /* unknown compiler */
# define COMPILER_ID \"\"
#endif")
set(CMAKE_CXX_COMPILER_ID_CONTENT "${CMAKE_CXX_COMPILER_ID_CONTENT}\n${platform_compiler_detection}")
endif()
compiler_id_detection(CMAKE_${lang}_COMPILER_ID_CONTENT ${lang})
unset(src_in CACHE)
string(CONFIGURE "${ID_CONTENT_IN}" ID_CONTENT_OUT @ONLY)
......
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