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Bumped CMake mimimum version to 3.11 because of include_guard.

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Cristian Adam
2018-04-24 04:52:02 +02:00
parent 98fdb657ce
commit d456f10a12
13 changed files with 153 additions and 447 deletions
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92
CMakeChecksCache/CheckSymbolExists.cmake
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@@ -1,6 +1,6 @@
# MIT License
# Copyright (c) 2017 Cristian Adam
# Copyright (c) 2017-2018 Cristian Adam
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
@@ -20,92 +20,14 @@
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
cmake_minimum_required(VERSION 3.4.3)
include_guard(GLOBAL)
set(cache_file ${CMAKE_CHECKS_CACHE_FILE})
if(NOT cache_file)
set(cache_file ${CMAKE_BINARY_DIR}/cmake_checks_cache.txt)
endif()
cmake_minimum_required(VERSION 3.11)
# Found a bug in cmake, they already have a _check_symbol_exists implementation macro o_O
# include(${CMAKE_ROOT}/Modules/CheckSymbolExists.cmake)
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
macro(official_check_symbol_exists SYMBOL FILES VARIABLE)
if(CMAKE_C_COMPILER_LOADED)
official_check_symbol_exists_impl("${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckSymbolExists.c" "${SYMBOL}" "${FILES}" "${VARIABLE}" )
elseif(CMAKE_CXX_COMPILER_LOADED)
official_check_symbol_exists_impl("${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckSymbolExists.cxx" "${SYMBOL}" "${FILES}" "${VARIABLE}" )
else()
message(FATAL_ERROR "CHECK_SYMBOL_EXISTS needs either C or CXX language enabled")
endif()
endmacro()
macro(official_check_symbol_exists_impl SOURCEFILE SYMBOL FILES VARIABLE)
if(NOT DEFINED "${VARIABLE}" OR "x${${VARIABLE}}" STREQUAL "x${VARIABLE}")
set(CMAKE_CONFIGURABLE_FILE_CONTENT "/* */\n")
set(MACRO_CHECK_SYMBOL_EXISTS_FLAGS ${CMAKE_REQUIRED_FLAGS})
if(CMAKE_REQUIRED_LIBRARIES)
set(CHECK_SYMBOL_EXISTS_LIBS
LINK_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
else()
set(CHECK_SYMBOL_EXISTS_LIBS)
endif()
if(CMAKE_REQUIRED_INCLUDES)
set(CMAKE_SYMBOL_EXISTS_INCLUDES
"-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}")
else()
set(CMAKE_SYMBOL_EXISTS_INCLUDES)
endif()
foreach(FILE ${FILES})
string(APPEND CMAKE_CONFIGURABLE_FILE_CONTENT
"#include <${FILE}>\n")
endforeach()
string(APPEND CMAKE_CONFIGURABLE_FILE_CONTENT
"\nint main(int argc, char** argv)\n{\n (void)argv;\n#ifndef ${SYMBOL}\n return ((int*)(&${SYMBOL}))[argc];\n#else\n (void)argc;\n return 0;\n#endif\n}\n")
configure_file("${CMAKE_ROOT}/Modules/CMakeConfigurableFile.in"
"${SOURCEFILE}" @ONLY)
if(NOT CMAKE_REQUIRED_QUIET)
message(STATUS "Looking for ${SYMBOL}")
endif()
try_compile(${VARIABLE}
${CMAKE_BINARY_DIR}
"${SOURCEFILE}"
COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
${CHECK_SYMBOL_EXISTS_LIBS}
CMAKE_FLAGS
-DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_SYMBOL_EXISTS_FLAGS}
"${CMAKE_SYMBOL_EXISTS_INCLUDES}"
OUTPUT_VARIABLE OUTPUT)
if(${VARIABLE})
if(NOT CMAKE_REQUIRED_QUIET)
message(STATUS "Looking for ${SYMBOL} - found")
endif()
set(${VARIABLE} 1 CACHE INTERNAL "Have symbol ${SYMBOL}")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
"Determining if the ${SYMBOL} "
"exist passed with the following output:\n"
"${OUTPUT}\nFile ${SOURCEFILE}:\n"
"${CMAKE_CONFIGURABLE_FILE_CONTENT}\n")
else()
if(NOT CMAKE_REQUIRED_QUIET)
message(STATUS "Looking for ${SYMBOL} - not found")
endif()
set(${VARIABLE} "" CACHE INTERNAL "Have symbol ${SYMBOL}")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
"Determining if the ${SYMBOL} "
"exist failed with the following output:\n"
"${OUTPUT}\nFile ${SOURCEFILE}:\n"
"${CMAKE_CONFIGURABLE_FILE_CONTENT}\n")
endif()
endif()
endmacro()
include(DumpCMakeVariables)
include(${CMAKE_ROOT}/Modules/CheckSymbolExists.cmake)
macro(check_symbol_exists symbol header variable)
official_check_symbol_exists(${symbol} "${header}" ${variable})
file(APPEND ${cache_file} "set(${variable} \"${${variable}}\" CACHE INTERNAL \"Have symbol ${symbol}\")\n")
_check_symbol_exists(${symbol} "${header}" ${variable})
file(APPEND ${CMAKE_BINARY_DIR}/cmake_checks_cache.txt "set(${variable} \"${${variable}}\" CACHE INTERNAL \"Have symbol ${symbol}\")\n")
endmacro()