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https://github.com/KhronosGroup/glslang
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cb261e3c21
This was a copy-paste screwup, where the first line of the copyright had the company name was updated, but the company name mid way though was not.
139 lines
5.3 KiB
CMake
139 lines
5.3 KiB
CMake
# Copyright (C) 2020 The Khronos Group Inc.
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#
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials provided
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# with the distribution.
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#
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# Neither the name of The Khronos Group Inc. nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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# The macro choose_msvc_crt() takes a list of possible
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# C runtimes to choose from, in the form of compiler flags,
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# to present to the user. (MTd for /MTd, etc)
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#
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# The macro is invoked at the end of the file.
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#
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# CMake already sets CRT flags in the CMAKE_CXX_FLAGS_* and
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# CMAKE_C_FLAGS_* variables by default. To let the user
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# override that for each build type:
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# 1. Detect which CRT is already selected, and reflect this in
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# LLVM_USE_CRT_* so the user can have a better idea of what
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# changes they're making.
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# 2. Replace the flags in both variables with the new flag via a regex.
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# 3. set() the variables back into the cache so the changes
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# are user-visible.
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### Helper macros: ###
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macro(make_crt_regex regex crts)
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set(${regex} "")
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foreach(crt ${${crts}})
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# Trying to match the beginning or end of the string with stuff
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# like [ ^]+ didn't work, so use a bunch of parentheses instead.
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set(${regex} "${${regex}}|(^| +)/${crt}($| +)")
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endforeach(crt)
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string(REGEX REPLACE "^\\|" "" ${regex} "${${regex}}")
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endmacro(make_crt_regex)
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macro(get_current_crt crt_current regex flagsvar)
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# Find the selected-by-CMake CRT for each build type, if any.
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# Strip off the leading slash and any whitespace.
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string(REGEX MATCH "${${regex}}" ${crt_current} "${${flagsvar}}")
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string(REPLACE "/" " " ${crt_current} "${${crt_current}}")
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string(STRIP "${${crt_current}}" ${crt_current})
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endmacro(get_current_crt)
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# Replaces or adds a flag to a variable.
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# Expects 'flag' to be padded with spaces.
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macro(set_flag_in_var flagsvar regex flag)
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string(REGEX MATCH "${${regex}}" current_flag "${${flagsvar}}")
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if("${current_flag}" STREQUAL "")
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set(${flagsvar} "${${flagsvar}}${${flag}}")
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else()
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string(REGEX REPLACE "${${regex}}" "${${flag}}" ${flagsvar} "${${flagsvar}}")
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endif()
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string(STRIP "${${flagsvar}}" ${flagsvar})
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# Make sure this change gets reflected in the cache/gui.
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# CMake requires the docstring parameter whenever set() touches the cache,
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# so get the existing docstring and re-use that.
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get_property(flagsvar_docs CACHE ${flagsvar} PROPERTY HELPSTRING)
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set(${flagsvar} "${${flagsvar}}" CACHE STRING "${flagsvar_docs}" FORCE)
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endmacro(set_flag_in_var)
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macro(choose_msvc_crt MSVC_CRT)
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if(LLVM_USE_CRT)
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message(FATAL_ERROR
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"LLVM_USE_CRT is deprecated. Use the CMAKE_BUILD_TYPE-specific
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variables (LLVM_USE_CRT_DEBUG, etc) instead.")
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endif()
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make_crt_regex(MSVC_CRT_REGEX ${MSVC_CRT})
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foreach(build_type ${CMAKE_CONFIGURATION_TYPES} ${CMAKE_BUILD_TYPE})
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string(TOUPPER "${build_type}" build)
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if (NOT LLVM_USE_CRT_${build})
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get_current_crt(LLVM_USE_CRT_${build}
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MSVC_CRT_REGEX
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CMAKE_CXX_FLAGS_${build})
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set(LLVM_USE_CRT_${build}
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"${LLVM_USE_CRT_${build}}"
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CACHE STRING "Specify VC++ CRT to use for ${build_type} configurations."
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FORCE)
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set_property(CACHE LLVM_USE_CRT_${build}
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PROPERTY STRINGS ;${${MSVC_CRT}})
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endif(NOT LLVM_USE_CRT_${build})
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endforeach(build_type)
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foreach(build_type ${CMAKE_CONFIGURATION_TYPES} ${CMAKE_BUILD_TYPE})
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string(TOUPPER "${build_type}" build)
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if ("${LLVM_USE_CRT_${build}}" STREQUAL "")
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set(flag_string " ")
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else()
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set(flag_string " /${LLVM_USE_CRT_${build}} ")
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list(FIND ${MSVC_CRT} ${LLVM_USE_CRT_${build}} idx)
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if (idx LESS 0)
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message(FATAL_ERROR
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"Invalid value for LLVM_USE_CRT_${build}: ${LLVM_USE_CRT_${build}}. Valid options are one of: ${${MSVC_CRT}}")
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endif (idx LESS 0)
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message(STATUS "Using ${build_type} VC++ CRT: ${LLVM_USE_CRT_${build}}")
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endif()
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foreach(lang C CXX)
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set_flag_in_var(CMAKE_${lang}_FLAGS_${build} MSVC_CRT_REGEX flag_string)
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endforeach(lang)
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endforeach(build_type)
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endmacro(choose_msvc_crt MSVC_CRT)
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# List of valid CRTs for MSVC
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set(MSVC_CRT
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MD
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MDd
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MT
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MTd)
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choose_msvc_crt(MSVC_CRT)
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