diff options
Diffstat (limited to 'share/cmake-3.5/Modules/CheckCXXSourceCompiles.cmake')
| -rwxr-xr-x | share/cmake-3.5/Modules/CheckCXXSourceCompiles.cmake | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/share/cmake-3.5/Modules/CheckCXXSourceCompiles.cmake b/share/cmake-3.5/Modules/CheckCXXSourceCompiles.cmake new file mode 100755 index 0000000..f8736e2 --- /dev/null +++ b/share/cmake-3.5/Modules/CheckCXXSourceCompiles.cmake @@ -0,0 +1,112 @@ +#.rst: +# CheckCXXSourceCompiles +# ---------------------- +# +# Check if given C++ source compiles and links into an executable +# +# CHECK_CXX_SOURCE_COMPILES(<code> <var> [FAIL_REGEX <fail-regex>]) +# +# :: +# +# <code> - source code to try to compile, must define 'main' +# <var> - variable to store whether the source code compiled +# Will be created as an internal cache variable. +# <fail-regex> - fail if test output matches this regex +# +# The following variables may be set before calling this macro to modify +# the way the check is run: +# +# :: +# +# CMAKE_REQUIRED_FLAGS = string of compile command line flags +# CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar) +# CMAKE_REQUIRED_INCLUDES = list of include directories +# CMAKE_REQUIRED_LIBRARIES = list of libraries to link +# CMAKE_REQUIRED_QUIET = execute quietly without messages + +#============================================================================= +# Copyright 2005-2009 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.) + + + +macro(CHECK_CXX_SOURCE_COMPILES SOURCE VAR) + if(NOT DEFINED "${VAR}") + set(_FAIL_REGEX) + set(_key) + foreach(arg ${ARGN}) + if("${arg}" MATCHES "^(FAIL_REGEX)$") + set(_key "${arg}") + elseif(_key) + list(APPEND _${_key} "${arg}") + else() + message(FATAL_ERROR "Unknown argument:\n ${arg}\n") + endif() + endforeach() + + set(MACRO_CHECK_FUNCTION_DEFINITIONS + "-D${VAR} ${CMAKE_REQUIRED_FLAGS}") + if(CMAKE_REQUIRED_LIBRARIES) + set(CHECK_CXX_SOURCE_COMPILES_ADD_LIBRARIES + LINK_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES}) + else() + set(CHECK_CXX_SOURCE_COMPILES_ADD_LIBRARIES) + endif() + if(CMAKE_REQUIRED_INCLUDES) + set(CHECK_CXX_SOURCE_COMPILES_ADD_INCLUDES + "-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}") + else() + set(CHECK_CXX_SOURCE_COMPILES_ADD_INCLUDES) + endif() + file(WRITE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.cxx" + "${SOURCE}\n") + + if(NOT CMAKE_REQUIRED_QUIET) + message(STATUS "Performing Test ${VAR}") + endif() + try_compile(${VAR} + ${CMAKE_BINARY_DIR} + ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.cxx + COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} + ${CHECK_CXX_SOURCE_COMPILES_ADD_LIBRARIES} + CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS} + "${CHECK_CXX_SOURCE_COMPILES_ADD_INCLUDES}" + OUTPUT_VARIABLE OUTPUT) + + foreach(_regex ${_FAIL_REGEX}) + if("${OUTPUT}" MATCHES "${_regex}") + set(${VAR} 0) + endif() + endforeach() + + if(${VAR}) + set(${VAR} 1 CACHE INTERNAL "Test ${VAR}") + if(NOT CMAKE_REQUIRED_QUIET) + message(STATUS "Performing Test ${VAR} - Success") + endif() + file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log + "Performing C++ SOURCE FILE Test ${VAR} succeeded with the following output:\n" + "${OUTPUT}\n" + "Source file was:\n${SOURCE}\n") + else() + if(NOT CMAKE_REQUIRED_QUIET) + message(STATUS "Performing Test ${VAR} - Failed") + endif() + set(${VAR} "" CACHE INTERNAL "Test ${VAR}") + file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log + "Performing C++ SOURCE FILE Test ${VAR} failed with the following output:\n" + "${OUTPUT}\n" + "Source file was:\n${SOURCE}\n") + endif() + endif() +endmacro() + |