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55 lines
1.7 KiB
CMake
55 lines
1.7 KiB
CMake
# SPDX-License-Identifier: MPL-2.0
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function(default_build_type val)
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if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
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message(STATUS "No build type selected, default to Release")
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set(CMAKE_BUILD_TYPE
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${val}
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CACHE STRING "Build type (default ${val})" FORCE)
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endif()
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endfunction()
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function(set_std_fs_lib)
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# from pybind11 Check if we need to add -lstdc++fs or -lc++fs or nothing
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if(DEFINED CMAKE_CXX_STANDARD AND CMAKE_CXX_STANDARD LESS 17)
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set(STD_FS_NO_LIB_NEEDED TRUE)
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elseif(MSVC)
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set(STD_FS_NO_LIB_NEEDED TRUE)
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else()
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file(
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WRITE ${CMAKE_CURRENT_BINARY_DIR}/main.cpp
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"#include <filesystem>\nint main(int argc, char ** argv) {\n std::filesystem::path p(argv[0]);\n return p.string().length();\n}"
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)
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try_compile(
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STD_FS_NO_LIB_NEEDED ${CMAKE_CURRENT_BINARY_DIR}
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SOURCES ${CMAKE_CURRENT_BINARY_DIR}/main.cpp
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COMPILE_DEFINITIONS -std=c++17)
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try_compile(
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STD_FS_NEEDS_STDCXXFS ${CMAKE_CURRENT_BINARY_DIR}
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SOURCES ${CMAKE_CURRENT_BINARY_DIR}/main.cpp
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COMPILE_DEFINITIONS -std=c++17
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LINK_LIBRARIES stdc++fs)
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try_compile(
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STD_FS_NEEDS_CXXFS ${CMAKE_CURRENT_BINARY_DIR}
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SOURCES ${CMAKE_CURRENT_BINARY_DIR}/main.cpp
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COMPILE_DEFINITIONS -std=c++17
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LINK_LIBRARIES c++fs)
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endif()
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if(${STD_FS_NEEDS_STDCXXFS})
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set(STD_FS_LIB
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stdc++fs
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PARENT_SCOPE)
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elseif(${STD_FS_NEEDS_CXXFS})
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set(STD_FS_LIB
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c++fs
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PARENT_SCOPE)
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elseif(${STD_FS_NO_LIB_NEEDED})
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set(STD_FS_LIB
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""
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PARENT_SCOPE)
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else()
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message(WARNING "Unknown C++17 compiler - not passing -lstdc++fs")
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set(STD_FS_LIB "")
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endif()
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endfunction()
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