171 lines
6.4 KiB
CMake
171 lines
6.4 KiB
CMake
# - Configures C++14 compiler, setting TDLib-specific compilation options.
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function(td_set_up_compiler)
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set(CMAKE_EXPORT_COMPILE_COMMANDS 1 PARENT_SCOPE)
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set(CMAKE_POSITION_INDEPENDENT_CODE ON PARENT_SCOPE)
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include(illumos)
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if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
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set(GCC 1)
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set(GCC 1 PARENT_SCOPE)
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elseif (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
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set(CLANG 1)
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set(CLANG 1 PARENT_SCOPE)
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elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
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set(INTEL 1)
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set(INTEL 1 PARENT_SCOPE)
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elseif (NOT MSVC)
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message(FATAL_ERROR "Compiler isn't supported")
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endif()
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include(CheckCXXCompilerFlag)
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if (GCC OR CLANG OR INTEL)
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if (WIN32 AND INTEL)
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set(STD14_FLAG /Qstd=c++14)
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else()
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set(STD14_FLAG -std=c++14)
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endif()
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check_cxx_compiler_flag(${STD14_FLAG} HAVE_STD14)
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if (NOT HAVE_STD14)
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string(REPLACE "c++14" "c++1y" STD14_FLAG "${STD14_FLAG}")
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check_cxx_compiler_flag(${STD14_FLAG} HAVE_STD1Y)
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set(HAVE_STD14 ${HAVE_STD1Y})
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endif()
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elseif (MSVC)
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set(HAVE_STD14 MSVC_VERSION>=1900)
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endif()
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if (NOT HAVE_STD14)
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message(FATAL_ERROR "No C++14 support in the compiler. Please upgrade the compiler.")
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endif()
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if (MSVC)
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if (CMAKE_CXX_FLAGS_DEBUG MATCHES "/RTC1")
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string(REPLACE "/RTC1" " " CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}")
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endif()
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add_definitions(-D_SCL_SECURE_NO_WARNINGS -D_CRT_SECURE_NO_WARNINGS)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /utf-8 /GR- /W4 /wd4100 /wd4127 /wd4324 /wd4505 /wd4814 /wd4702 /bigobj")
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elseif (CLANG OR GCC)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${STD14_FLAG} -fno-omit-frame-pointer -fno-exceptions -fno-rtti")
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if (APPLE)
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set(TD_LINKER_FLAGS "-Wl,-dead_strip")
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if (NOT CMAKE_BUILD_TYPE MATCHES "Deb")
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set(TD_LINKER_FLAGS "${TD_LINKER_FLAGS},-x,-S")
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endif()
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else()
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ffunction-sections -fdata-sections")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ffunction-sections -fdata-sections")
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if (CMAKE_SYSTEM_NAME STREQUAL "SunOS")
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set(TD_LINKER_FLAGS "-Wl,-z,ignore")
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elseif (EMSCRIPTEN)
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set(TD_LINKER_FLAGS "-Wl,--gc-sections")
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else()
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set(TD_LINKER_FLAGS "-Wl,--gc-sections -Wl,--exclude-libs,ALL")
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endif()
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endif()
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set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${TD_LINKER_FLAGS}")
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${TD_LINKER_FLAGS}")
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if (WIN32 OR CYGWIN)
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if (GCC)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wa,-mbig-obj")
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endif()
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endif()
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elseif (INTEL)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${STD14_FLAG}")
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endif()
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if (WIN32)
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add_definitions(-DNTDDI_VERSION=0x06020000 -DWINVER=0x0602 -D_WIN32_WINNT=0x0602 -DPSAPI_VERSION=1 -DNOMINMAX -DUNICODE -D_UNICODE -DWIN32_LEAN_AND_MEAN)
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endif()
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if (CYGWIN)
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add_definitions(-D_DEFAULT_SOURCE=1 -DFD_SETSIZE=4096)
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endif()
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# _FILE_OFFSET_BITS is broken in Android NDK r15, r15b and r17 and doesn't work prior to Android 7.0
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add_definitions(-D_FILE_OFFSET_BITS=64)
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# _GNU_SOURCE might not be defined by g++
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add_definitions(-D_GNU_SOURCE)
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if (CMAKE_SYSTEM_NAME STREQUAL "SunOS")
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -lsocket -lnsl")
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if (ILLUMOS)
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add_definitions(-DTD_ILLUMOS=1)
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endif()
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endif()
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include(AddCXXCompilerFlag)
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if (NOT MSVC)
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add_cxx_compiler_flag("-Wall")
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add_cxx_compiler_flag("-Wextra")
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add_cxx_compiler_flag("-Wimplicit-fallthrough=2")
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add_cxx_compiler_flag("-Wpointer-arith")
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add_cxx_compiler_flag("-Wcast-qual")
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add_cxx_compiler_flag("-Wsign-compare")
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add_cxx_compiler_flag("-Wduplicated-branches")
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add_cxx_compiler_flag("-Wduplicated-cond")
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add_cxx_compiler_flag("-Walloc-zero")
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add_cxx_compiler_flag("-Wlogical-op")
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add_cxx_compiler_flag("-Wno-tautological-compare")
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add_cxx_compiler_flag("-Wpointer-arith")
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add_cxx_compiler_flag("-Wvla")
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add_cxx_compiler_flag("-Wnon-virtual-dtor")
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add_cxx_compiler_flag("-Wno-unused-parameter")
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add_cxx_compiler_flag("-Wconversion")
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add_cxx_compiler_flag("-Wno-sign-conversion")
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add_cxx_compiler_flag("-Wc++14-compat-pedantic")
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add_cxx_compiler_flag("-Wdeprecated")
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add_cxx_compiler_flag("-Wno-unused-command-line-argument")
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add_cxx_compiler_flag("-Qunused-arguments")
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add_cxx_compiler_flag("-Wodr")
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add_cxx_compiler_flag("-flto-odr-type-merging")
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# add_cxx_compiler_flag("-Werror")
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# add_cxx_compiler_flag("-Wcast-align")
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#std::int32_t <-> int and off_t <-> std::size_t/std::int64_t
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# add_cxx_compiler_flag("-Wuseless-cast")
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#external headers like openssl
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# add_cxx_compiler_flag("-Wzero-as-null-pointer-constant")
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endif()
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if (GCC AND NOT (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.0))
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add_cxx_compiler_flag("-Wno-maybe-uninitialized") # too many false positives
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endif()
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if (WIN32 AND GCC AND NOT (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 8.0))
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# warns about casts of function pointers returned by GetProcAddress
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add_cxx_compiler_flag("-Wno-cast-function-type")
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endif()
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if (GCC AND NOT (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 9.0))
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# warns about a lot of "return std::move", which are not redundant for compilers without fix for DR 1579, i.e. GCC 4.9 or clang 3.8
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# see http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#1579
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add_cxx_compiler_flag("-Wno-redundant-move")
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endif()
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if (GCC AND NOT (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 12.0))
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add_cxx_compiler_flag("-Wno-stringop-overflow") # some false positives
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endif()
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if (CLANG AND (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.5))
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# https://stackoverflow.com/questions/26744556/warning-returning-a-captured-reference-from-a-lambda
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add_cxx_compiler_flag("-Wno-return-stack-address")
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endif()
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#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -isystem /usr/include/c++/v1")
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#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
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#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=thread")
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#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address")
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#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=undefined")
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#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=leak")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}" PARENT_SCOPE)
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set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}" PARENT_SCOPE)
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set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}" PARENT_SCOPE)
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}" PARENT_SCOPE)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}" PARENT_SCOPE)
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endfunction()
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