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100 lines
4.0 KiB
100 lines
4.0 KiB
cmake_minimum_required(VERSION 3.23) |
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# Make sure the user doesn't play dirty with symlinks |
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get_filename_component(srcdir "${CMAKE_SOURCE_DIR}" REALPATH) |
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get_filename_component(bindir "${CMAKE_BINARY_DIR}" REALPATH) |
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# Disallow in-source builds |
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if(${srcdir} STREQUAL ${bindir}) |
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message(FATAL_ERROR "In-source builds are not allowed." |
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" Please create a directory and run cmake from there, passing the path" |
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" to this source directory as the last argument. This process created" |
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" the file `CMakeCache.txt' and the directory `CMakeFiles' in ${srcdir}." |
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" Please remove them.") |
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endif() |
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project(odm CXX) |
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if(NOT CMAKE_BUILD_TYPE) |
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set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build, options are: Debug Release RelWithDebInfo MinSizeRel" FORCE) |
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endif() |
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set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake/modules/" CACHE INTERNAL "Location of our custom CMake modules." FORCE) |
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include_directories(include) |
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# Checking compiler options |
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set(default_options -Wall) |
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set(linker_options -Wall) |
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include(CheckCXXCompilerFlag) |
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set(saved_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS}) |
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# C++20 is required |
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CHECK_CXX_COMPILER_FLAG(-std=c++20 COMPILER_SUPPORTS_CXX20) |
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if(COMPILER_SUPPORTS_CXX20) |
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set(default_options ${default_options} -std=c++20) |
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else() |
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message(FATAL_ERROR "The compiler ${CMAKE_CXX_COMPILER} has no C++20 support. Please use a different C++ compiler.") |
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endif() |
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# OpenMP is required |
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CHECK_CXX_COMPILER_FLAG(-fopenmp COMPILER_SUPPORTS_OPENMP) |
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if(COMPILER_SUPPORTS_OPENMP) |
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set(default_options ${default_options} -fopenmp) |
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set(linker_options ${linker_options} -fopenmp) |
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else() |
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message(FATAL_ERROR "The compiler ${CMAKE_CXX_COMPILER} has no OpenMP support. Please use a different C++ compiler.") |
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endif() |
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# Link time optimization check |
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set(CMAKE_REQUIRED_FLAGS -flto=auto) |
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CHECK_CXX_COMPILER_FLAG(-flto=auto COMPILER_SUPPORTS_FLTO) |
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if(COMPILER_SUPPORTS_FLTO AND NOT CMAKE_BUILD_TYPE STREQUAL "Debug") |
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set(default_options ${default_options} -flto=auto) |
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set(linker_options ${linker_options} -flto=auto) |
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endif() |
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unset(CMAKE_REQUIRED_FLAGS) |
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# Clang can use lto only with gold linker |
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if(NOT COMPILER_SUPPORTS_FLTO) |
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set(CMAKE_REQUIRED_FLAGS -flto\ -fuse-ld=gold) |
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CHECK_CXX_COMPILER_FLAG(-flto\ -fuse-ld=gold COMPILER_SUPPORTS_FLTO_GOLD) |
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if(COMPILER_SUPPORTS_FLTO_GOLD AND NOT CMAKE_BUILD_TYPE STREQUAL "Debug") |
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set(default_options ${default_options} -flto) |
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set(linker_options ${linker_options} -flto\ -fuse-ld=gold) |
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endif() |
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unset(CMAKE_REQUIRED_FLAGS) |
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endif() |
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# Dwarf-4 support check |
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set(CMAKE_REQUIRED_FLAGS -gdwarf-4) |
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CHECK_CXX_COMPILER_FLAG(-gdwarf-4 COMPILER_SUPPORTS_DWARF4) |
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if(COMPILER_SUPPORTS_DWARF4 AND (CMAKE_BUILD_TYPE STREQUAL "Debug" OR CMAKE_BUILD_TYPE STREQUAL "RelWithDebInfo")) |
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set(default_options ${default_options} -gdwarf-4) |
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set(linker_options ${linker_options} -gdwarf-4) |
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endif() |
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unset(CMAKE_REQUIRED_FLAGS) |
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# -ipo flag check (Intel compiler link time optimization) |
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set(CMAKE_REQUIRED_FLAGS -ipo) |
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CHECK_CXX_COMPILER_FLAG(-ipo COMPILER_SUPPORTS_IPO) |
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if(COMPILER_SUPPORTS_IPO AND NOT CMAKE_BUILD_TYPE STREQUAL "Debug") |
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set(default_options ${default_options} -ipo) |
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set(linker_options ${linker_options} -ipo) |
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endif() |
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unset(CMAKE_REQUIRED_FLAGS) |
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# Default hidden visibility check |
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set(CMAKE_REQUIRED_FLAGS -fvisibility=hidden) |
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CHECK_CXX_COMPILER_FLAG(-fvisibility=hidden COMPILER_SUPPORTS_HIDDEN) |
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if(COMPILER_SUPPORTS_HIDDEN) |
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set(default_options ${default_options} -fvisibility=hidden) |
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set(linker_options ${linker_options} -fvisibility=hidden) |
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endif() |
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unset(CMAKE_REQUIRED_FLAGS) |
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# Export dynamic. Required as modules mast call functions from main programm |
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set(CMAKE_REQUIRED_FLAGS -Wl,--export-dynamic) |
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CHECK_CXX_COMPILER_FLAG(-Wl,--export-dynamic COMPILER_SUPPORTS_EXPORTDYNAMIC) |
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if(COMPILER_SUPPORTS_EXPORTDYNAMIC) |
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set(linker_options ${linker_options} -Wl,--export-dynamic) |
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else() |
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message(FATAL_ERROR "The compiler ${CMAKE_CXX_COMPILER} has no support of --export-dynamic. Please use a different C++ compiler.") |
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endif() |
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unset(CMAKE_REQUIRED_FLAGS) |
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add_compile_options(${default_options}) |
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set(CMAKE_REQUIRED_FLAGS ${saved_CMAKE_REQUIRED_FLAGS}) |
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add_subdirectory(src)
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