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9db3116226
Ancient versions of CMake required else(), endif(), and similar block
termination commands to have arguments matching the command starting the
block. This is no longer the preferred style.
Run the following shell code:
for c in else endif endforeach endfunction endmacro endwhile; do
echo 's/\b'"$c"'\(\s*\)(.\+)/'"$c"'\1()/'
done >convert.sed &&
git ls-files -z -- bootstrap '*.cmake' '*.cmake.in' '*CMakeLists.txt' |
egrep -z -v '^(Utilities/cm|Source/kwsys/)' |
egrep -z -v 'Tests/CMakeTests/While-Endwhile-' |
xargs -0 sed -i -f convert.sed &&
rm convert.sed
96 lines
3.8 KiB
CMake
96 lines
3.8 KiB
CMake
# - Check if given C source compiles and links into an executable
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# CHECK_C_SOURCE_COMPILES(<code> <var> [FAIL_REGEX <fail-regex>])
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# <code> - source code to try to compile, must define 'main'
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# <var> - variable to store whether the source code compiled
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# <fail-regex> - fail if test output matches this regex
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# The following variables may be set before calling this macro to
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# modify the way the check is run:
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#
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# CMAKE_REQUIRED_FLAGS = string of compile command line flags
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# CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
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# CMAKE_REQUIRED_INCLUDES = list of include directories
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# CMAKE_REQUIRED_LIBRARIES = list of libraries to link
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#=============================================================================
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# Copyright 2005-2009 Kitware, Inc.
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#
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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file Copyright.txt for details.
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#
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# This software is distributed WITHOUT ANY WARRANTY; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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# License text for the above reference.)
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include("${CMAKE_CURRENT_LIST_DIR}/CMakeExpandImportedTargets.cmake")
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macro(CHECK_C_SOURCE_COMPILES SOURCE VAR)
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if("${VAR}" MATCHES "^${VAR}$")
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set(_FAIL_REGEX)
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set(_key)
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foreach(arg ${ARGN})
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if("${arg}" MATCHES "^(FAIL_REGEX)$")
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set(_key "${arg}")
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elseif(_key)
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list(APPEND _${_key} "${arg}")
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else()
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message(FATAL_ERROR "Unknown argument:\n ${arg}\n")
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endif()
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endforeach()
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set(MACRO_CHECK_FUNCTION_DEFINITIONS
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"-D${VAR} ${CMAKE_REQUIRED_FLAGS}")
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if(CMAKE_REQUIRED_LIBRARIES)
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# this one translates potentially used imported library targets to their files on disk
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CMAKE_EXPAND_IMPORTED_TARGETS(_ADJUSTED_CMAKE_REQUIRED_LIBRARIES LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} CONFIGURATION "${CMAKE_TRY_COMPILE_CONFIGURATION}")
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set(CHECK_C_SOURCE_COMPILES_ADD_LIBRARIES
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"-DLINK_LIBRARIES:STRING=${_ADJUSTED_CMAKE_REQUIRED_LIBRARIES}")
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else()
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set(CHECK_C_SOURCE_COMPILES_ADD_LIBRARIES)
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endif()
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if(CMAKE_REQUIRED_INCLUDES)
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set(CHECK_C_SOURCE_COMPILES_ADD_INCLUDES
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"-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}")
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else()
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set(CHECK_C_SOURCE_COMPILES_ADD_INCLUDES)
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endif()
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file(WRITE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.c"
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"${SOURCE}\n")
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message(STATUS "Performing Test ${VAR}")
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try_compile(${VAR}
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${CMAKE_BINARY_DIR}
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${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.c
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COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
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CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS}
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"${CHECK_C_SOURCE_COMPILES_ADD_LIBRARIES}"
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"${CHECK_C_SOURCE_COMPILES_ADD_INCLUDES}"
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OUTPUT_VARIABLE OUTPUT)
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foreach(_regex ${_FAIL_REGEX})
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if("${OUTPUT}" MATCHES "${_regex}")
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set(${VAR} 0)
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endif()
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endforeach()
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if(${VAR})
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set(${VAR} 1 CACHE INTERNAL "Test ${VAR}")
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message(STATUS "Performing Test ${VAR} - Success")
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Performing C SOURCE FILE Test ${VAR} succeded with the following output:\n"
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"${OUTPUT}\n"
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"Source file was:\n${SOURCE}\n")
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else()
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message(STATUS "Performing Test ${VAR} - Failed")
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set(${VAR} "" CACHE INTERNAL "Test ${VAR}")
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Performing C SOURCE FILE Test ${VAR} failed with the following output:\n"
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"${OUTPUT}\n"
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"Source file was:\n${SOURCE}\n")
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endif()
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endif()
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endmacro()
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