mirror of
https://github.com/isar/libmdbx.git
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mdbx-cmake: fixes for old C/C++ compilers and/or CMake.
This commit is contained in:
Leonid Yuriev
parent
505ee31635
commit
95199c754a
@ -299,7 +299,9 @@ if(NOT HAS_C11 LESS 0)
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else()
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set(MDBX_C_STANDARD 99)
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endif()
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if(MDBX_C_STANDARD)
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message(STATUS "Use C${MDBX_C_STANDARD} for libmdbx")
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endif()
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if(${CMAKE_SYSTEM_NAME} STREQUAL "Windows" AND EXISTS "${MDBX_SOURCE_DIR}/ntdll.def")
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if(MSVC)
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@ -485,9 +487,11 @@ if(MDBX_INSTALL_STATIC)
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else()
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add_library(mdbx-static STATIC EXCLUDE_FROM_ALL ${LIBMDBX_SOURCES})
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endif()
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set_target_properties(mdbx-static PROPERTIES PUBLIC_HEADER mdbx.h)
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if(MDBX_C_STANDARD)
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set_target_properties(mdbx-static PROPERTIES
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C_STANDARD ${MDBX_C_STANDARD} C_STANDARD_REQUIRED ON
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PUBLIC_HEADER mdbx.h)
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C_STANDARD ${MDBX_C_STANDARD} C_STANDARD_REQUIRED ON)
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endif()
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target_compile_definitions(mdbx-static PRIVATE MDBX_BUILD_SHARED_LIBRARY=0)
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target_setup_options(mdbx-static)
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libmdbx_setup_libs(mdbx-static INTERFACE)
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@ -502,9 +506,11 @@ endif()
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# build shared library
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if(MDBX_BUILD_SHARED_LIBRARY)
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add_library(mdbx SHARED ${LIBMDBX_SOURCES})
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set_target_properties(mdbx PROPERTIES PUBLIC_HEADER mdbx.h)
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if(MDBX_C_STANDARD)
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set_target_properties(mdbx PROPERTIES
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C_STANDARD ${MDBX_C_STANDARD} C_STANDARD_REQUIRED ON
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PUBLIC_HEADER mdbx.h)
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C_STANDARD ${MDBX_C_STANDARD} C_STANDARD_REQUIRED ON)
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endif()
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target_compile_definitions(mdbx PRIVATE LIBMDBX_EXPORTS MDBX_BUILD_SHARED_LIBRARY=1 INTERFACE LIBMDBX_IMPORTS)
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target_setup_options(mdbx)
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libmdbx_setup_libs(mdbx PRIVATE)
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@ -557,8 +563,10 @@ if(MDBX_BUILD_TOOLS)
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foreach(TOOL mdbx_chk mdbx_copy mdbx_stat mdbx_dump mdbx_load)
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add_executable(${TOOL} mdbx.h ${MDBX_SOURCE_DIR}/${TOOL}.c ${WINGETOPT_SRC})
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if(MDBX_C_STANDARD)
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set_target_properties(${TOOL} PROPERTIES
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C_STANDARD ${MDBX_C_STANDARD} C_STANDARD_REQUIRED ON)
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endif()
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target_setup_options(${TOOL})
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target_link_libraries(${TOOL} ${TOOL_MDBX_LIB})
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endforeach()
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@ -254,6 +254,17 @@ else()
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set(CMAKE_REQUIRED_FLAGS "")
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endif()
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# Crutch for old C++ compilers and/or CMake to enabling C++11
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if(CMAKE_CXX_COMPILER_LOADED)
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list(FIND CMAKE_CXX_COMPILE_FEATURES cxx_std_11 HAS_CXX11)
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if(HAS_CXX11 LESS 0)
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check_compiler_flag("-std=gnu++11" CXX_FALLBACK_STDGNU11)
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if(NOT CXX_FALLBACK_STDGNU11)
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check_compiler_flag("-std=c++11" CXX_FALLBACK_STD11)
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endif()
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endif()
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endif()
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# Check for LTO support by GCC
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if(CMAKE_COMPILER_IS_GNU${CMAKE_PRIMARY_LANG})
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unset(gcc_collect)
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@ -487,8 +498,12 @@ endif()
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macro(setup_compile_flags)
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# save initial C/CXX flags
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if(NOT INITIAL_CMAKE_FLAGS_SAVED)
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if(CMAKE_CXX_COMPILER_LOADED)
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set(INITIAL_CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} CACHE STRING "Initial CMake's flags" FORCE)
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endif()
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if(CMAKE_C_COMPILER_LOADED)
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set(INITIAL_CMAKE_C_FLAGS ${CMAKE_C_FLAGS} CACHE STRING "Initial CMake's flags" FORCE)
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endif()
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set(INITIAL_CMAKE_EXE_LINKER_FLAGS ${CMAKE_EXE_LINKER_FLAGS} CACHE STRING "Initial CMake's flags" FORCE)
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set(INITIAL_CMAKE_SHARED_LINKER_FLAGS ${CMAKE_SHARED_LINKER_FLAGS} CACHE STRING "Initial CMake's flags" FORCE)
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set(INITIAL_CMAKE_STATIC_LINKER_FLAGS ${CMAKE_STATIC_LINKER_FLAGS} CACHE STRING "Initial CMake's flags" FORCE)
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@ -497,8 +512,18 @@ macro(setup_compile_flags)
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endif()
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# reset C/CXX flags
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if(CMAKE_CXX_COMPILER_LOADED)
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set(CXX_FLAGS ${INITIAL_CMAKE_CXX_FLAGS})
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# Crutch for old C++ compilers and/or CMake to enabling C++11
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if(CXX_FALLBACK_STDGNU11)
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add_compile_flags("CXX" "-std=gnu++11")
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elseif(CXX_FALLBACK_STD11)
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add_compile_flags("CXX" "-std=c++11")
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endif()
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endif()
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if(CMAKE_C_COMPILER_LOADED)
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set(C_FLAGS ${INITIAL_CMAKE_C_FLAGS})
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endif()
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set(EXE_LINKER_FLAGS ${INITIAL_CMAKE_EXE_LINKER_FLAGS})
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set(SHARED_LINKER_FLAGS ${INITIAL_CMAKE_SHARED_LINKER_FLAGS})
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set(STATIC_LINKER_FLAGS ${INITIAL_CMAKE_STATIC_LINKER_FLAGS})
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@ -721,20 +746,25 @@ macro(setup_compile_flags)
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endif()
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# push C/CXX flags into the cache
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if(CMAKE_CXX_COMPILER_LOADED)
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set(CMAKE_CXX_FLAGS ${CXX_FLAGS} CACHE STRING "Flags used by the C++ compiler during all build types" FORCE)
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unset(CXX_FLAGS)
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endif()
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if(CMAKE_C_COMPILER_LOADED)
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set(CMAKE_C_FLAGS ${C_FLAGS} CACHE STRING "Flags used by the C compiler during all build types" FORCE)
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unset(C_FLAGS)
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endif()
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set(CMAKE_EXE_LINKER_FLAGS ${EXE_LINKER_FLAGS} CACHE STRING "Flags used by the linker" FORCE)
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set(CMAKE_SHARED_LINKER_FLAGS ${SHARED_LINKER_FLAGS} CACHE STRING "Flags used by the linker during the creation of dll's" FORCE)
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set(CMAKE_STATIC_LINKER_FLAGS ${STATIC_LINKER_FLAGS} CACHE STRING "Flags used by the linker during the creation of static libraries" FORCE)
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set(CMAKE_MODULE_LINKER_FLAGS ${MODULE_LINKER_FLAGS} CACHE STRING "Flags used by the linker during the creation of modules" FORCE)
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unset(CXX_FLAGS)
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unset(C_FLAGS)
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unset(EXE_LINKER_FLAGS)
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unset(SHARED_LINKER_FLAGS)
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unset(STATIC_LINKER_FLAGS)
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unset(MODULE_LINKER_FLAGS)
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endmacro(setup_compile_flags)
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if(CMAKE_CXX_COMPILER_LOADED)
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# determine library for for std::filesystem
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set(LIBCXX_FILESYSTEM "")
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if(CMAKE_COMPILER_IS_GNUCXX)
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@ -748,5 +778,6 @@ elseif(CMAKE_COMPILER_IS_CLANG)
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set(LIBCXX_FILESYSTEM "stdc++fs")
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endif()
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endif()
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endif()
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cmake_policy(POP)
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@ -27,9 +27,37 @@ add_executable(mdbx_test
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nested.cc
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)
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list(FIND CMAKE_CXX_COMPILE_FEATURES cxx_std_20 HAS_CXX20)
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list(FIND CMAKE_CXX_COMPILE_FEATURES cxx_std_17 HAS_CXX17)
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list(FIND CMAKE_CXX_COMPILE_FEATURES cxx_std_14 HAS_CXX14)
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list(FIND CMAKE_CXX_COMPILE_FEATURES cxx_std_11 HAS_CXX11)
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if(NOT DEFINED MDBX_CXX_STANDARD)
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if(DEFINED CMAKE_CXX_STANDARD)
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set(MDBX_CXX_STANDARD ${CMAKE_CXX_STANDARD})
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elseif(NOT HAS_CXX20 LESS 0)
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set(MDBX_CXX_STANDARD 20)
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elseif(NOT HAS_CXX17 LESS 0)
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set(MDBX_CXX_STANDARD 17)
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elseif(NOT HAS_CXX14 LESS 0)
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set(MDBX_CXX_STANDARD 14)
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elseif(NOT HAS_CXX11 LESS 0)
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set(MDBX_CXX_STANDARD 11)
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endif()
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endif()
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if(MDBX_CXX_STANDARD)
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message(STATUS "Use C++${MDBX_CXX_STANDARD} for libmdbx")
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if(NOT SUBPROJECT OR NOT DEFINED CMAKE_CXX_STANDARD)
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set(CMAKE_CXX_STANDARD ${MDBX_CXX_STANDARD})
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endif()
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endif()
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if(MDBX_CXX_STANDARD)
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set_target_properties(mdbx_test PROPERTIES
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INTERPROCEDURAL_OPTIMIZATION $<BOOL:${INTERPROCEDURAL_OPTIMIZATION}>
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CXX_STANDARD 17 CXX_STANDARD_REQUIRED ON)
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CXX_STANDARD ${MDBX_CXX_STANDARD} CXX_STANDARD_REQUIRED ON)
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endif()
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set_target_properties(mdbx_test PROPERTIES
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INTERPROCEDURAL_OPTIMIZATION $<BOOL:${INTERPROCEDURAL_OPTIMIZATION}>)
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target_setup_options(mdbx_test)
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target_link_libraries(mdbx_test ${TOOL_MDBX_LIB} ${LIB_MATH} ${CMAKE_THREAD_LIBS_INIT})
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