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# ~~~
################################################################################
#
# Compilers
#
################################################################################
#
# sets (cached):
#
# CMAKE_C_COMPILER_IS_<TYPE>
# CMAKE_CXX_COMPILER_IS_<TYPE>
#
# where TYPE is:
# - GNU
# - CLANG
# - INTEL
# - INTEL_ICC
# - INTEL_ICPC
# - PGI
# - XLC
# - HP_ACC
# - MIPS
# - MSVC
# ~~~
# include guard
if(__compilers_is_loaded)
return()
endif()
set(__compilers_is_loaded ON)
include(CheckLanguage)
include(CheckCCompilerFlag)
include(CheckCSourceCompiles)
include(CheckCSourceRuns)
include(CheckCXXCompilerFlag)
include(CheckCXXSourceCompiles)
include(CheckCXXSourceRuns)
# ##############################################################################
# macro converting string to list
# ##############################################################################
macro(to_list _VAR _STR)
string(REPLACE " " " " ${_VAR} "${_STR}")
string(REPLACE " " ";" ${_VAR} "${_STR}")
endmacro(
to_list
_VAR
_STR)
# ##############################################################################
# macro converting string to list
# ##############################################################################
macro(to_string _VAR _STR)
string(REPLACE ";" " " ${_VAR} "${_STR}")
endmacro(
to_string
_VAR
_STR)
# ##############################################################################
# Macro to add to string
# ##############################################################################
macro(add _VAR _FLAG)
if(NOT "${_FLAG}" STREQUAL "")
if("${${_VAR}}" STREQUAL "")
set(${_VAR} "${_FLAG}")
else()
set(${_VAR} "${${_VAR}} ${_FLAG}")
endif()
endif()
endmacro()
# ##############################################################################
# macro to remove duplicates from string
# ##############################################################################
macro(set_no_duplicates _VAR)
if(NOT "${ARGN}" STREQUAL "")
set(${_VAR} "${ARGN}")
endif()
# remove the duplicates
if(NOT "${${_VAR}}" STREQUAL "")
# create list of flags
to_list(_VAR_LIST "${${_VAR}}")
list(REMOVE_DUPLICATES _VAR_LIST)
to_string(${_VAR} "${_VAR_LIST}")
endif(NOT "${${_VAR}}" STREQUAL "")
endmacro(set_no_duplicates _VAR)
# ##############################################################################
# check C flag
# ##############################################################################
macro(ADD_C_FLAG_IF_AVAIL FLAG)
if(NOT "${FLAG}" STREQUAL "")
string(REGEX REPLACE "^-" "c_" FLAG_NAME "${FLAG}")
string(REPLACE "-" "_" FLAG_NAME "${FLAG_NAME}")
string(REPLACE " " "_" FLAG_NAME "${FLAG_NAME}")
string(REPLACE "=" "_" FLAG_NAME "${FLAG_NAME}")
check_c_compiler_flag("${FLAG}" ${FLAG_NAME})
if(${FLAG_NAME})
list(APPEND ${PROJECT_NAME}_C_FLAGS "${FLAG}")
endif()
endif()
endmacro()
# ##############################################################################
# check CXX flag
# ##############################################################################
macro(ADD_CXX_FLAG_IF_AVAIL FLAG)
if(NOT "${FLAG}" STREQUAL "")
string(REGEX REPLACE "^-" "cxx_" FLAG_NAME "${FLAG}")
string(REPLACE "-" "_" FLAG_NAME "${FLAG_NAME}")
string(REPLACE " " "_" FLAG_NAME "${FLAG_NAME}")
string(REPLACE "=" "_" FLAG_NAME "${FLAG_NAME}")
check_cxx_compiler_flag("${FLAG}" ${FLAG_NAME})
if(${FLAG_NAME})
list(APPEND ${PROJECT_NAME}_CXX_FLAGS "${FLAG}")
endif()
endif()
endmacro()
# ##############################################################################
# determine compiler types for each language
# ##############################################################################
foreach(LANG C CXX)
macro(SET_COMPILER_VAR VAR _BOOL)
set(CMAKE_${LANG}_COMPILER_IS_${VAR}
${_BOOL}
CACHE BOOL "CMake ${LANG} compiler identification (${VAR})")
mark_as_advanced(CMAKE_${LANG}_COMPILER_IS_${VAR})
endmacro()
if(("${LANG}" STREQUAL "C" AND CMAKE_COMPILER_IS_GNUCC)
OR ("${LANG}" STREQUAL "CXX" AND CMAKE_COMPILER_IS_GNUCXX))
# GNU compiler
set_compiler_var(GNU ON)
elseif(CMAKE_${LANG}_COMPILER MATCHES "icc.*")
# Intel icc compiler
set_compiler_var(INTEL ON)
set_compiler_var(INTEL_ICC ON)
elseif(CMAKE_${LANG}_COMPILER MATCHES "icpc.*")
# Intel icpc compiler
set_compiler_var(INTEL ON)
set_compiler_var(INTEL_ICPC ON)
elseif(CMAKE_${LANG}_COMPILER_ID MATCHES "Clang" OR CMAKE_${LANG}_COMPILER_ID
MATCHES "AppleClang")
# Clang/LLVM compiler
set_compiler_var(CLANG ON)
elseif(CMAKE_${LANG}_COMPILER_ID MATCHES "PGI")
# PGI compiler
set_compiler_var(PGI ON)
elseif(CMAKE_${LANG}_COMPILER MATCHES "xlC" AND UNIX)
# IBM xlC compiler
set_compiler_var(XLC ON)
elseif(CMAKE_${LANG}_COMPILER MATCHES "aCC" AND UNIX)
# HP aC++ compiler
set_compiler_var(HP_ACC ON)
elseif(
CMAKE_${LANG}_COMPILER MATCHES "CC"
AND CMAKE_SYSTEM_NAME MATCHES "IRIX"
AND UNIX)
# IRIX MIPSpro CC Compiler
set_compiler_var(MIPS ON)
elseif(CMAKE_${LANG}_COMPILER_ID MATCHES "Intel")
set_compiler_var(INTEL ON)
set(CTYPE ICC)
if("${LANG}" STREQUAL "CXX")
set(CTYPE ICPC)
endif()
set_compiler_var(INTEL_${CTYPE} ON)
elseif(CMAKE_${LANG}_COMPILER MATCHES "MSVC")
# Windows Visual Studio compiler
set_compiler_var(MSVC ON)
endif()
# set other to no
foreach(
TYPE
GNU
INTEL
INTEL_ICC
INTEL_ICPC
CLANG
PGI
XLC
HP_ACC
MIPS
MSVC)
if(NOT ${CMAKE_${LANG}_COMPILER_IS_${TYPE}})
set_compiler_var(${TYPE} OFF)
endif()
endforeach()
if(APPLE)
set(CMAKE_INCLUDE_SYSTEM_FLAG_${LANG} "-isystem ")
endif(APPLE)
endforeach()
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