mirror of
https://github.com/isar/libmdbx.git
synced 2024-10-30 11:29:19 +08:00
820 lines
32 KiB
CMake
820 lines
32 KiB
CMake
## Copyright (c) 2012-2022 Leonid Yuriev <leo@yuriev.ru>.
|
||
##
|
||
## Licensed under the Apache License, Version 2.0 (the "License");
|
||
## you may not use this file except in compliance with the License.
|
||
## You may obtain a copy of the License at
|
||
##
|
||
## http://www.apache.org/licenses/LICENSE-2.0
|
||
##
|
||
## Unless required by applicable law or agreed to in writing, software
|
||
## distributed under the License is distributed on an "AS IS" BASIS,
|
||
## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
## See the License for the specific language governing permissions and
|
||
## limitations under the License.
|
||
##
|
||
|
||
if(CMAKE_VERSION VERSION_LESS 3.12)
|
||
cmake_minimum_required(VERSION 3.8.2)
|
||
else()
|
||
cmake_minimum_required(VERSION 3.12)
|
||
endif()
|
||
|
||
cmake_policy(PUSH)
|
||
cmake_policy(VERSION ${CMAKE_MINIMUM_REQUIRED_VERSION})
|
||
|
||
if(CMAKE_VERSION MATCHES ".*MSVC.*" AND CMAKE_VERSION VERSION_LESS 3.16)
|
||
message(FATAL_ERROR "CMake from MSVC kit is unfit! "
|
||
"Please use MSVC2019 with modern CMake the original CMake from https://cmake.org/download/")
|
||
endif()
|
||
|
||
if(NOT (CMAKE_C_COMPILER_LOADED OR CMAKE_CXX_COMPILER_LOADED))
|
||
message(FATAL_ERROR "This module required C or C++ to be enabled")
|
||
endif()
|
||
|
||
if(CMAKE_CXX_COMPILER_LOADED)
|
||
include(CheckCXXSourceRuns)
|
||
include(CheckCXXSourceCompiles)
|
||
include(CheckCXXCompilerFlag)
|
||
endif()
|
||
if(CMAKE_C_COMPILER_LOADED)
|
||
include(CheckCSourceRuns)
|
||
include(CheckCSourceCompiles)
|
||
include(CheckCCompilerFlag)
|
||
endif()
|
||
include(CMakeDependentOption)
|
||
include(CheckLibraryExists)
|
||
include(CheckIncludeFiles)
|
||
|
||
# Check if the same compile family is used for both C and CXX
|
||
if(CMAKE_C_COMPILER_LOADED AND CMAKE_CXX_COMPILER_LOADED AND
|
||
NOT (CMAKE_C_COMPILER_ID STREQUAL CMAKE_CXX_COMPILER_ID))
|
||
message(WARNING "CMAKE_C_COMPILER_ID (${CMAKE_C_COMPILER_ID}) is different "
|
||
"from CMAKE_CXX_COMPILER_ID (${CMAKE_CXX_COMPILER_ID}). "
|
||
"The final binary may be unusable.")
|
||
endif()
|
||
|
||
if(CMAKE_CXX_COMPILER_LOADED)
|
||
set(CMAKE_PRIMARY_LANG "CXX")
|
||
else()
|
||
set(CMAKE_PRIMARY_LANG "C")
|
||
endif()
|
||
|
||
macro(check_compiler_flag flag variable)
|
||
if(CMAKE_CXX_COMPILER_LOADED)
|
||
check_cxx_compiler_flag(${flag} ${variable})
|
||
else()
|
||
check_c_compiler_flag(${flag} ${variable})
|
||
endif()
|
||
endmacro(check_compiler_flag)
|
||
|
||
# We support building with Clang and gcc. First check
|
||
# what we're using for build.
|
||
if(CMAKE_C_COMPILER_LOADED AND CMAKE_C_COMPILER_ID MATCHES ".*[Cc][Ll][Aa][Nn][Gg].*")
|
||
set(CMAKE_COMPILER_IS_CLANG ON)
|
||
set(CMAKE_COMPILER_IS_GNUCC OFF)
|
||
endif()
|
||
if(CMAKE_CXX_COMPILER_LOADED AND CMAKE_CXX_COMPILER_ID MATCHES ".*[Cc][Ll][Aa][Nn][Gg].*")
|
||
set(CMAKE_COMPILER_IS_CLANG ON)
|
||
set(CMAKE_COMPILER_IS_GNUCXX OFF)
|
||
endif()
|
||
|
||
if(CMAKE_C_COMPILER_LOADED)
|
||
# Check for Elbrus lcc
|
||
execute_process(COMMAND ${CMAKE_C_COMPILER} --version
|
||
OUTPUT_VARIABLE tmp_lcc_probe_version
|
||
RESULT_VARIABLE tmp_lcc_probe_result ERROR_QUIET)
|
||
if(tmp_lcc_probe_result EQUAL 0)
|
||
string(FIND "${tmp_lcc_probe_version}" "lcc:" tmp_lcc_marker)
|
||
string(FIND "${tmp_lcc_probe_version}" ":e2k-" tmp_e2k_marker)
|
||
if(tmp_lcc_marker GREATER -1 AND tmp_e2k_marker GREATER tmp_lcc_marker)
|
||
execute_process(COMMAND ${CMAKE_C_COMPILER} -print-version
|
||
OUTPUT_VARIABLE CMAKE_C_COMPILER_VERSION
|
||
RESULT_VARIABLE tmp_lcc_probe_result)
|
||
set(CMAKE_COMPILER_IS_ELBRUSC ON)
|
||
set(CMAKE_C_COMPILER_ID "Elbrus")
|
||
else()
|
||
set(CMAKE_COMPILER_IS_ELBRUSC OFF)
|
||
endif()
|
||
unset(tmp_lcc_marker)
|
||
unset(tmp_e2k_marker)
|
||
endif()
|
||
unset(tmp_lcc_probe_version)
|
||
unset(tmp_lcc_probe_result)
|
||
endif()
|
||
|
||
if(CMAKE_CXX_COMPILER_LOADED)
|
||
# Check for Elbrus l++
|
||
execute_process(COMMAND ${CMAKE_CXX_COMPILER} --version
|
||
OUTPUT_VARIABLE tmp_lxx_probe_version
|
||
RESULT_VARIABLE tmp_lxx_probe_result ERROR_QUIET)
|
||
if(tmp_lxx_probe_result EQUAL 0)
|
||
string(FIND "${tmp_lxx_probe_version}" "lcc:" tmp_lcc_marker)
|
||
string(FIND "${tmp_lxx_probe_version}" ":e2k-" tmp_e2k_marker)
|
||
if(tmp_lcc_marker GREATER -1 AND tmp_e2k_marker GREATER tmp_lcc_marker)
|
||
execute_process(COMMAND ${CMAKE_CXX_COMPILER} -print-version
|
||
OUTPUT_VARIABLE CMAKE_CXX_COMPILER_VERSION
|
||
RESULT_VARIABLE tmp_lxx_probe_result)
|
||
set(CMAKE_COMPILER_IS_ELBRUSCXX ON)
|
||
set(CMAKE_CXX_COMPILER_ID "Elbrus")
|
||
else()
|
||
set(CMAKE_COMPILER_IS_ELBRUSCXX OFF)
|
||
endif()
|
||
unset(tmp_lcc_marker)
|
||
unset(tmp_e2k_marker)
|
||
endif()
|
||
unset(tmp_lxx_probe_version)
|
||
unset(tmp_lxx_probe_result)
|
||
endif()
|
||
|
||
# Hard coding the compiler version is ugly from cmake POV, but
|
||
# at least gives user a friendly error message. The most critical
|
||
# demand for C++ compiler is support of C++11 lambdas, added
|
||
# only in version 4.5 https://gcc.gnu.org/projects/cxx0x.html
|
||
if(CMAKE_COMPILER_IS_GNUCC)
|
||
if(CMAKE_C_COMPILER_VERSION VERSION_LESS 4.5
|
||
AND NOT CMAKE_COMPILER_IS_ELBRUSC)
|
||
message(FATAL_ERROR "
|
||
Your GCC version is ${CMAKE_C_COMPILER_VERSION}, please update")
|
||
endif()
|
||
endif()
|
||
if(CMAKE_COMPILER_IS_GNUCXX)
|
||
if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.5
|
||
AND NOT CMAKE_COMPILER_IS_ELBRUSCXX)
|
||
message(FATAL_ERROR "
|
||
Your G++ version is ${CMAKE_CXX_COMPILER_VERSION}, please update")
|
||
endif()
|
||
endif()
|
||
|
||
if(CMAKE_CL_64)
|
||
set(MSVC64 1)
|
||
endif()
|
||
if(WIN32 AND CMAKE_COMPILER_IS_GNU${CMAKE_PRIMARY_LANG})
|
||
execute_process(COMMAND ${CMAKE_${CMAKE_PRIMARY_LANG}_COMPILER} -dumpmachine
|
||
OUTPUT_VARIABLE __GCC_TARGET_MACHINE
|
||
OUTPUT_STRIP_TRAILING_WHITESPACE)
|
||
if(__GCC_TARGET_MACHINE MATCHES "amd64|x86_64|AMD64")
|
||
set(MINGW64 1)
|
||
endif()
|
||
unset(__GCC_TARGET_MACHINE)
|
||
endif()
|
||
|
||
if(NOT DEFINED IOS)
|
||
if(APPLE AND (CMAKE_SYSTEM_NAME STREQUAL "iOS"
|
||
OR DEFINED CMAKE_IOS_DEVELOPER_ROOT
|
||
OR DEFINED IOS_PLATFORM OR DEFINED IOS_ARCH))
|
||
set(IOS TRUE)
|
||
else()
|
||
set(IOS FALSE)
|
||
endif()
|
||
endif()
|
||
|
||
if(NOT DEFINED CMAKE_TARGET_BITNESS)
|
||
if (CMAKE_SIZEOF_VOID_P LESS 4)
|
||
set(CMAKE_TARGET_BITNESS 16)
|
||
elseif (CMAKE_SIZEOF_VOID_P LESS 8)
|
||
set(CMAKE_TARGET_BITNESS 32)
|
||
else()
|
||
set(CMAKE_TARGET_BITNESS 64)
|
||
endif()
|
||
endif()
|
||
|
||
if(CMAKE_COMPILER_IS_ELBRUSC OR CMAKE_COMPILER_IS_ELBRUSCXX OR CMAKE_SYSTEM_PROCESSOR MATCHES "e2k.*|E2K.*|elbrus.*|ELBRUS.*")
|
||
set(E2K TRUE)
|
||
set(CMAKE_SYSTEM_ARCH "Elbrus")
|
||
elseif((MSVC64 OR MINGW64) AND CMAKE_TARGET_BITNESS EQUAL 64)
|
||
set(X86_64 TRUE)
|
||
set(CMAKE_SYSTEM_ARCH "x86_64")
|
||
elseif(MINGW OR (MSVC AND NOT CMAKE_CROSSCOMPILING))
|
||
set(X86_32 TRUE)
|
||
set(CMAKE_SYSTEM_ARCH "x86")
|
||
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64.*|x86_64.*|AMD64.*" AND CMAKE_TARGET_BITNESS EQUAL 64)
|
||
set(X86_64 TRUE)
|
||
set(CMAKE_SYSTEM_ARCH "x86_64")
|
||
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "i686.*|i386.*|x86.*")
|
||
set(X86_32 TRUE)
|
||
set(CMAKE_SYSTEM_ARCH "x86")
|
||
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64.*|AARCH64.*|ARM64.*)" AND CMAKE_TARGET_BITNESS EQUAL 64)
|
||
set(AARCH64 TRUE)
|
||
set(CMAKE_SYSTEM_ARCH "ARM64")
|
||
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(arm.*|ARM.*)")
|
||
set(ARM32 TRUE)
|
||
set(CMAKE_SYSTEM_ARCH "ARM")
|
||
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc)64le.*" AND CMAKE_TARGET_BITNESS EQUAL 64)
|
||
set(PPC64LE TRUE)
|
||
set(CMAKE_SYSTEM_ARCH "PPC64LE")
|
||
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc)64.*" AND CMAKE_TARGET_BITNESS EQUAL 64)
|
||
set(PPC64 TRUE)
|
||
set(CMAKE_SYSTEM_ARCH "PPC64")
|
||
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc).*")
|
||
set(PPC32 TRUE)
|
||
set(CMAKE_SYSTEM_ARCH "PPC")
|
||
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(mips|MIPS)64.*" AND CMAKE_TARGET_BITNESS EQUAL 64)
|
||
set(MIPS64 TRUE)
|
||
set(CMAKE_SYSTEM_ARCH "MIPS64")
|
||
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(mips|MIPS).*")
|
||
set(MIPS32 TRUE)
|
||
set(CMAKE_SYSTEM_ARCH "MIPS")
|
||
endif()
|
||
|
||
if(MSVC)
|
||
check_compiler_flag("/WX" CC_HAS_WERROR)
|
||
else()
|
||
#
|
||
# GCC started to warn for unused result starting from 4.2, and
|
||
# this is when it introduced -Wno-unused-result
|
||
# GCC can also be built on top of llvm runtime (on mac).
|
||
check_compiler_flag("-Wno-unknown-pragmas" CC_HAS_WNO_UNKNOWN_PRAGMAS)
|
||
check_compiler_flag("-Wextra" CC_HAS_WEXTRA)
|
||
check_compiler_flag("-Werror" CC_HAS_WERROR)
|
||
check_compiler_flag("-fexceptions" CC_HAS_FEXCEPTIONS)
|
||
check_compiler_flag("-fno-semantic-interposition" CC_HAS_FNO_SEMANTIC_INTERPOSITION)
|
||
if(CMAKE_CXX_COMPILER_LOADED)
|
||
check_cxx_compiler_flag("-fcxx-exceptions" CC_HAS_FCXX_EXCEPTIONS)
|
||
endif()
|
||
check_compiler_flag("-funwind-tables" CC_HAS_FUNWIND_TABLES)
|
||
check_compiler_flag("-fno-omit-frame-pointer" CC_HAS_FNO_OMIT_FRAME_POINTER)
|
||
check_compiler_flag("-fno-common" CC_HAS_FNO_COMMON)
|
||
check_compiler_flag("-ggdb" CC_HAS_GGDB)
|
||
check_compiler_flag("-fvisibility=hidden" CC_HAS_VISIBILITY)
|
||
check_compiler_flag("-march=native" CC_HAS_ARCH_NATIVE)
|
||
check_compiler_flag("-Og" CC_HAS_DEBUG_FRIENDLY_OPTIMIZATION)
|
||
check_compiler_flag("-Wall" CC_HAS_WALL)
|
||
check_compiler_flag("-Ominimal" CC_HAS_OMINIMAL)
|
||
check_compiler_flag("-ffunction-sections -fdata-sections" CC_HAS_SECTIONS)
|
||
check_compiler_flag("-ffast-math" CC_HAS_FASTMATH)
|
||
check_compiler_flag("-Wno-attributes" CC_HAS_WNO_ATTRIBUTES)
|
||
|
||
# Check for an omp support
|
||
set(CMAKE_REQUIRED_FLAGS "-fopenmp -Werror")
|
||
if(CMAKE_CXX_COMPILER_LOADED)
|
||
check_cxx_source_compiles("int main(void) {
|
||
#pragma omp parallel
|
||
return 0;
|
||
}" HAVE_OPENMP)
|
||
else()
|
||
check_c_source_compiles("int main(void) {
|
||
#pragma omp parallel
|
||
return 0;
|
||
}" HAVE_OPENMP)
|
||
endif()
|
||
set(CMAKE_REQUIRED_FLAGS "")
|
||
endif()
|
||
|
||
# Crutch for old C++ compilers and/or CMake to enabling C++11
|
||
if(CMAKE_CXX_COMPILER_LOADED)
|
||
list(FIND CMAKE_CXX_COMPILE_FEATURES cxx_std_11 HAS_CXX11)
|
||
if(HAS_CXX11 LESS 0)
|
||
check_compiler_flag("-std=gnu++11" CXX_FALLBACK_STDGNU11)
|
||
if(NOT CXX_FALLBACK_STDGNU11)
|
||
check_compiler_flag("-std=c++11" CXX_FALLBACK_STD11)
|
||
endif()
|
||
endif()
|
||
endif()
|
||
|
||
# Check for LTO support by GCC
|
||
if(CMAKE_COMPILER_IS_GNU${CMAKE_PRIMARY_LANG} AND NOT CMAKE_COMPILER_IS_ELBRUSC AND NOT CMAKE_COMPILER_IS_ELBRUSCXX)
|
||
unset(gcc_collect)
|
||
unset(gcc_lto_wrapper)
|
||
|
||
if(NOT CMAKE_${CMAKE_PRIMARY_LANG}_COMPILER_VERSION VERSION_LESS 4.7)
|
||
execute_process(COMMAND ${CMAKE_${CMAKE_PRIMARY_LANG}_COMPILER} -v
|
||
OUTPUT_VARIABLE gcc_info_v ERROR_VARIABLE gcc_info_v)
|
||
|
||
string(REGEX MATCH "^(.+\nCOLLECT_GCC=)([^ \n]+)(\n.+)$" gcc_collect_valid ${gcc_info_v})
|
||
if(gcc_collect_valid)
|
||
string(REGEX REPLACE "^(.+\nCOLLECT_GCC=)([^ \n]+)(\n.+)$" "\\2" gcc_collect ${gcc_info_v})
|
||
endif()
|
||
|
||
string(REGEX MATCH "^(.+\nCOLLECT_LTO_WRAPPER=)([^ \n]+/lto-wrapper)(\n.+)$" gcc_lto_wrapper_valid ${gcc_info_v})
|
||
if(gcc_lto_wrapper_valid)
|
||
string(REGEX REPLACE "^(.+\nCOLLECT_LTO_WRAPPER=)([^ \n]+/lto-wrapper)(\n.+)$" "\\2" gcc_lto_wrapper ${gcc_info_v})
|
||
endif()
|
||
|
||
set(gcc_suffix "")
|
||
if(gcc_collect_valid AND gcc_collect)
|
||
string(REGEX MATCH "^(.*(cc|\\+\\+))(-.+)$" gcc_suffix_valid ${gcc_collect})
|
||
if(gcc_suffix_valid)
|
||
string(REGEX REPLACE "^(.*(cc|\\+\\+))(-.+)$" "\\3" gcc_suffix ${gcc_collect})
|
||
endif()
|
||
endif()
|
||
|
||
get_filename_component(gcc_dir ${CMAKE_${CMAKE_PRIMARY_LANG}_COMPILER} DIRECTORY)
|
||
if(NOT CMAKE_GCC_AR)
|
||
find_program(CMAKE_GCC_AR NAMES "gcc${gcc_suffix}-ar" "gcc-ar${gcc_suffix}" PATHS "${gcc_dir}" NO_DEFAULT_PATH)
|
||
endif()
|
||
if(NOT CMAKE_GCC_NM)
|
||
find_program(CMAKE_GCC_NM NAMES "gcc${gcc_suffix}-nm" "gcc-nm${gcc_suffix}" PATHS "${gcc_dir}" NO_DEFAULT_PATH)
|
||
endif()
|
||
if(NOT CMAKE_GCC_RANLIB)
|
||
find_program(CMAKE_GCC_RANLIB NAMES "gcc${gcc_suffix}-ranlib" "gcc-ranlib${gcc_suffix}" PATHS "${gcc_dir}" NO_DEFAULT_PATH)
|
||
endif()
|
||
|
||
unset(gcc_dir)
|
||
unset(gcc_suffix_valid)
|
||
unset(gcc_suffix)
|
||
unset(gcc_lto_wrapper_valid)
|
||
unset(gcc_collect_valid)
|
||
unset(gcc_collect)
|
||
unset(gcc_info_v)
|
||
endif()
|
||
|
||
if(CMAKE_GCC_AR AND CMAKE_GCC_NM AND CMAKE_GCC_RANLIB AND gcc_lto_wrapper)
|
||
message(STATUS "Found GCC's LTO toolset: ${gcc_lto_wrapper}, ${CMAKE_GCC_AR}, ${CMAKE_GCC_RANLIB}")
|
||
set(GCC_LTO_CFLAGS "-flto -fno-fat-lto-objects -fuse-linker-plugin")
|
||
set(GCC_LTO_AVAILABLE TRUE)
|
||
message(STATUS "Link-Time Optimization by GCC is available")
|
||
else()
|
||
set(GCC_LTO_AVAILABLE FALSE)
|
||
message(STATUS "Link-Time Optimization by GCC is NOT available")
|
||
endif()
|
||
unset(gcc_lto_wrapper)
|
||
endif()
|
||
|
||
# check for LTO by MSVC
|
||
if(MSVC AND NOT CMAKE_COMPILER_IS_CLANG)
|
||
if(NOT MSVC_VERSION LESS 1600)
|
||
set(MSVC_LTO_AVAILABLE TRUE)
|
||
message(STATUS "Link-Time Optimization by MSVC is available")
|
||
else()
|
||
set(MSVC_LTO_AVAILABLE FALSE)
|
||
message(STATUS "Link-Time Optimization by MSVC is NOT available")
|
||
endif()
|
||
endif()
|
||
|
||
# Check for LTO support by CLANG
|
||
if(CMAKE_COMPILER_IS_CLANG)
|
||
if(NOT CMAKE_${CMAKE_PRIMARY_LANG}_COMPILER_VERSION VERSION_LESS 3.5)
|
||
execute_process(COMMAND ${CMAKE_${CMAKE_PRIMARY_LANG}_COMPILER} -print-search-dirs
|
||
OUTPUT_VARIABLE clang_search_dirs RESULT_VARIABLE clang_probe_result ERROR_QUIET)
|
||
|
||
unset(clang_bindirs)
|
||
unset(clang_bindirs_x)
|
||
unset(clang_libdirs)
|
||
unset(clang_libdirs_x)
|
||
if(clang_probe_result EQUAL 0)
|
||
string(REGEX MATCH "(^|\n.*)(.*programs: =)([^\n]+)((\n.*)|$)" regexp_valid ${clang_search_dirs})
|
||
if(regexp_valid)
|
||
string(REGEX REPLACE "(^|\n.*)(.*programs: =)([^\n]+)((\n.*)|$)" "\\3" list ${clang_search_dirs})
|
||
string(REPLACE ":" ";" list "${list}")
|
||
foreach(dir IN LISTS list)
|
||
get_filename_component(dir "${dir}" REALPATH)
|
||
if(dir MATCHES ".*llvm.*" OR dir MATCHES ".*clang.*")
|
||
list(APPEND clang_bindirs "${dir}")
|
||
else()
|
||
list(APPEND clang_bindirs_x "${dir}")
|
||
endif()
|
||
endforeach()
|
||
list(APPEND clang_bindirs "${clang_bindirs_x}")
|
||
list(REMOVE_DUPLICATES clang_bindirs)
|
||
endif()
|
||
string(REGEX MATCH "(^|\n.*)(.*libraries: =)([^\n]+)((\n.*)|$)" regexp_valid ${clang_search_dirs})
|
||
if(regexp_valid)
|
||
string(REGEX REPLACE "(^|\n.*)(.*libraries: =)([^\n]+)((\n.*)|$)" "\\3" list ${clang_search_dirs})
|
||
string(REPLACE ":" ";" list "${list}")
|
||
foreach(dir IN LISTS list)
|
||
get_filename_component(dir "${dir}" REALPATH)
|
||
if(dir MATCHES ".*llvm.*" OR dir MATCHES ".*clang.*")
|
||
list(APPEND clang_libdirs "${dir}")
|
||
else()
|
||
list(APPEND clang_libdirs_x "${dir}")
|
||
endif()
|
||
endforeach()
|
||
list(APPEND clang_libdirs "${clang_libdirs_x}")
|
||
list(REMOVE_DUPLICATES clang_libdirs)
|
||
endif()
|
||
else()
|
||
get_filename_component(clang_bindirs ${CMAKE_${CMAKE_PRIMARY_LANG}_COMPILER} DIRECTORY)
|
||
if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Windows")
|
||
set(clang_libdirs ${clang_bindirs})
|
||
else()
|
||
get_filename_component(clang_libdirs "${CMAKE_${CMAKE_PRIMARY_LANG}_COMPILER}/../lib" REALPATH)
|
||
endif()
|
||
endif()
|
||
|
||
if(clang_bindirs AND clang_libdirs)
|
||
message(STATUS "Found CLANG/LLVM directories: ${clang_bindirs}, ${clang_libdirs}")
|
||
else()
|
||
message(STATUS "Could NOT find CLANG/LLVM directories (bin and/or lib).")
|
||
endif()
|
||
|
||
if(NOT CMAKE_CLANG_LD AND clang_bindirs)
|
||
find_program(CMAKE_CLANG_LD NAMES lld-link ld.lld "ld${CMAKE_TARGET_BITNESS}.lld" lld llvm-link llvm-ld PATHS ${clang_bindirs} NO_DEFAULT_PATH)
|
||
endif()
|
||
if(NOT CMAKE_CLANG_AR AND clang_bindirs)
|
||
find_program(CMAKE_CLANG_AR NAMES llvm-ar ar PATHS ${clang_bindirs} NO_DEFAULT_PATH)
|
||
endif()
|
||
if(NOT CMAKE_CLANG_NM AND clang_bindirs)
|
||
find_program(CMAKE_CLANG_NM NAMES llvm-nm nm PATHS ${clang_bindirs} NO_DEFAULT_PATH)
|
||
endif()
|
||
if(NOT CMAKE_CLANG_RANLIB AND clang_bindirs)
|
||
find_program(CMAKE_CLANG_RANLIB NAMES llvm-ranlib ranlib PATHS ${clang_bindirs} NO_DEFAULT_PATH)
|
||
endif()
|
||
|
||
set(clang_lto_plugin_name "LLVMgold${CMAKE_SHARED_LIBRARY_SUFFIX}")
|
||
if(NOT CMAKE_LD_GOLD AND clang_bindirs)
|
||
find_program(CMAKE_LD_GOLD NAMES ld.gold PATHS ${clang_bindirs})
|
||
endif()
|
||
if(NOT CLANG_LTO_PLUGIN AND clang_libdirs)
|
||
find_file(CLANG_LTO_PLUGIN ${clang_lto_plugin_name} PATHS ${clang_libdirs} NO_DEFAULT_PATH)
|
||
endif()
|
||
|
||
if(CLANG_LTO_PLUGIN)
|
||
message(STATUS "Found CLANG/LLVM's plugin for LTO: ${CLANG_LTO_PLUGIN}")
|
||
else()
|
||
message(STATUS "Could NOT find CLANG/LLVM's plugin (${clang_lto_plugin_name}) for LTO.")
|
||
endif()
|
||
|
||
if(CMAKE_CLANG_LD)
|
||
message(STATUS "Found CLANG/LLVM's linker for LTO: ${CMAKE_CLANG_LD}")
|
||
else()
|
||
message(STATUS "Could NOT find CLANG/LLVM's linker (lld, llvm-ld, llvm-link) for LTO.")
|
||
endif()
|
||
|
||
if(CMAKE_CLANG_AR AND CMAKE_CLANG_RANLIB AND CMAKE_CLANG_NM)
|
||
message(STATUS "Found CLANG/LLVM's binutils for LTO: ${CMAKE_CLANG_AR}, ${CMAKE_CLANG_RANLIB}, ${CMAKE_CLANG_NM}")
|
||
else()
|
||
message(STATUS "Could NOT find CLANG/LLVM's binutils (ar, ranlib, nm) for LTO.")
|
||
endif()
|
||
|
||
unset(clang_lto_plugin_name)
|
||
unset(clang_libdir)
|
||
unset(clang_bindir_valid)
|
||
unset(clang_bindir)
|
||
unset(clang_search_dirs)
|
||
endif()
|
||
|
||
if(CMAKE_CLANG_AR AND CMAKE_CLANG_NM AND CMAKE_CLANG_RANLIB
|
||
AND ((CLANG_LTO_PLUGIN AND CMAKE_LD_GOLD)
|
||
OR (CMAKE_CLANG_LD
|
||
AND NOT (CMAKE_HOST_SYSTEM_NAME STREQUAL "Linux"
|
||
AND CMAKE_SYSTEM_NAME STREQUAL "Linux"))
|
||
OR APPLE))
|
||
if(ANDROID AND CMAKE_SYSTEM_VERSION VERSION_LESS 22)
|
||
set(CLANG_LTO_AVAILABLE FALSE)
|
||
message(STATUS "Link-Time Optimization by CLANG/LLVM is available but unusable due https://reviews.llvm.org/D79919")
|
||
else()
|
||
set(CLANG_LTO_AVAILABLE TRUE)
|
||
message(STATUS "Link-Time Optimization by CLANG/LLVM is available")
|
||
endif()
|
||
elseif(CMAKE_TOOLCHAIN_FILE AND NOT CMAKE_${CMAKE_PRIMARY_LANG}_COMPILER_VERSION VERSION_LESS 7.0)
|
||
set(CLANG_LTO_AVAILABLE TRUE)
|
||
if(NOT CMAKE_CLANG_LD)
|
||
set(CMAKE_CLANG_LD ${CMAKE_LINKER})
|
||
endif()
|
||
if(NOT CMAKE_CLANG_AR)
|
||
set(CMAKE_CLANG_AR ${CMAKE_AR})
|
||
endif()
|
||
if(NOT CMAKE_CLANG_NM)
|
||
set(CMAKE_CLANG_NM ${CMAKE_NM})
|
||
endif()
|
||
if(NOT CMAKE_CLANG_RANLIB)
|
||
set(CMAKE_CLANG_RANLIB ${CMAKE_RANLIB})
|
||
endif()
|
||
message(STATUS "Assume Link-Time Optimization by CLANG/LLVM is available via ${CMAKE_TOOLCHAIN_FILE}")
|
||
else()
|
||
set(CLANG_LTO_AVAILABLE FALSE)
|
||
message(STATUS "Link-Time Optimization by CLANG/LLVM is NOT available")
|
||
endif()
|
||
endif()
|
||
|
||
# Perform build type specific configuration.
|
||
option(ENABLE_BACKTRACE "Enable output of fiber backtrace information in 'show
|
||
fiber' administrative command. Only works on x86 architectures, if compiled
|
||
with gcc. If GNU binutils and binutils-dev libraries are installed, backtrace
|
||
is output with resolved function (symbol) names. Otherwise only frame
|
||
addresses are printed." OFF)
|
||
|
||
set(HAVE_BFD False)
|
||
if(ENABLE_BACKTRACE)
|
||
if(NOT (X86_32 OR X86_64) OR NOT CMAKE_COMPILER_IS_GNU${CMAKE_PRIMARY_LANG})
|
||
# We only know this option to work with gcc
|
||
message(FATAL_ERROR "ENABLE_BACKTRACE option is set but the system
|
||
is not x86 based (${CMAKE_SYSTEM_PROCESSOR}) or the compiler
|
||
is not GNU GCC (${CMAKE_${CMAKE_PRIMARY_LANG}_COMPILER}).")
|
||
endif()
|
||
# Use GNU bfd if present.
|
||
find_library(BFD_LIBRARY NAMES libbfd.a)
|
||
if(BFD_LIBRARY)
|
||
check_library_exists(${BFD_LIBRARY} bfd_init "" HAVE_BFD_LIB)
|
||
endif()
|
||
find_library(IBERTY_LIBRARY NAMES libiberty.a)
|
||
if(IBERTY_LIBRARY)
|
||
check_library_exists(${IBERTY_LIBRARY} cplus_demangle "" HAVE_IBERTY_LIB)
|
||
endif()
|
||
set(CMAKE_REQUIRED_DEFINITIONS -DPACKAGE=${PACKAGE} -DPACKAGE_VERSION=${PACKAGE_VERSION})
|
||
check_include_files(bfd.h HAVE_BFD_H)
|
||
set(CMAKE_REQUIRED_DEFINITIONS)
|
||
find_package(ZLIB)
|
||
if(HAVE_BFD_LIB AND HAVE_BFD_H AND HAVE_IBERTY_LIB AND ZLIB_FOUND)
|
||
set(HAVE_BFD ON)
|
||
set(BFD_LIBRARIES ${BFD_LIBRARY} ${IBERTY_LIBRARY} ${ZLIB_LIBRARIES})
|
||
find_package_message(BFD_LIBRARIES "Found libbfd and dependencies"
|
||
${BFD_LIBRARIES})
|
||
if(TARGET_OS_FREEBSD AND NOT TARGET_OS_DEBIAN_FREEBSD)
|
||
set(BFD_LIBRARIES ${BFD_LIBRARIES} iconv)
|
||
endif()
|
||
endif()
|
||
endif()
|
||
|
||
macro(setup_compile_flags)
|
||
# save initial C/CXX flags
|
||
if(NOT INITIAL_CMAKE_FLAGS_SAVED)
|
||
if(CMAKE_CXX_COMPILER_LOADED)
|
||
set(INITIAL_CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} CACHE STRING "Initial CMake's flags" FORCE)
|
||
endif()
|
||
if(CMAKE_C_COMPILER_LOADED)
|
||
set(INITIAL_CMAKE_C_FLAGS ${CMAKE_C_FLAGS} CACHE STRING "Initial CMake's flags" FORCE)
|
||
endif()
|
||
set(INITIAL_CMAKE_EXE_LINKER_FLAGS ${CMAKE_EXE_LINKER_FLAGS} CACHE STRING "Initial CMake's flags" FORCE)
|
||
set(INITIAL_CMAKE_SHARED_LINKER_FLAGS ${CMAKE_SHARED_LINKER_FLAGS} CACHE STRING "Initial CMake's flags" FORCE)
|
||
set(INITIAL_CMAKE_STATIC_LINKER_FLAGS ${CMAKE_STATIC_LINKER_FLAGS} CACHE STRING "Initial CMake's flags" FORCE)
|
||
set(INITIAL_CMAKE_MODULE_LINKER_FLAGS ${CMAKE_MODULE_LINKER_FLAGS} CACHE STRING "Initial CMake's flags" FORCE)
|
||
set(INITIAL_CMAKE_FLAGS_SAVED TRUE CACHE INTERNAL "State of initial CMake's flags" FORCE)
|
||
endif()
|
||
|
||
# reset C/CXX flags
|
||
if(CMAKE_CXX_COMPILER_LOADED)
|
||
set(CXX_FLAGS ${INITIAL_CMAKE_CXX_FLAGS})
|
||
# Crutch for old C++ compilers and/or CMake to enabling C++11
|
||
if(CXX_FALLBACK_STDGNU11)
|
||
add_compile_flags("CXX" "-std=gnu++11")
|
||
elseif(CXX_FALLBACK_STD11)
|
||
add_compile_flags("CXX" "-std=c++11")
|
||
endif()
|
||
endif()
|
||
if(CMAKE_C_COMPILER_LOADED)
|
||
set(C_FLAGS ${INITIAL_CMAKE_C_FLAGS})
|
||
endif()
|
||
set(EXE_LINKER_FLAGS ${INITIAL_CMAKE_EXE_LINKER_FLAGS})
|
||
set(SHARED_LINKER_FLAGS ${INITIAL_CMAKE_SHARED_LINKER_FLAGS})
|
||
set(STATIC_LINKER_FLAGS ${INITIAL_CMAKE_STATIC_LINKER_FLAGS})
|
||
set(MODULE_LINKER_FLAGS ${INITIAL_CMAKE_MODULE_LINKER_FLAGS})
|
||
|
||
if(CC_HAS_FEXCEPTIONS)
|
||
add_compile_flags("C;CXX" "-fexceptions")
|
||
endif()
|
||
if(CC_HAS_FCXX_EXCEPTIONS)
|
||
add_compile_flags("CXX" "-fcxx-exceptions" "-frtti")
|
||
endif()
|
||
if(CC_HAS_FNO_SEMANTIC_INTERPOSITION)
|
||
add_compile_flags("C;CXX" "-fno-semantic-interposition")
|
||
endif()
|
||
if(MSVC)
|
||
# checks for /EHa or /clr options exists,
|
||
# i.e. is enabled structured async WinNT exceptions
|
||
string(REGEX MATCH "^(.* )*[-/]EHc*a( .*)*$" msvc_async_eh_enabled "${CXX_FLAGS}" "${C_FLAGS}")
|
||
string(REGEX MATCH "^(.* )*[-/]clr( .*)*$" msvc_clr_enabled "${CXX_FLAGS}" "${C_FLAGS}")
|
||
# remote any /EH? options
|
||
string(REGEX REPLACE "( *[-/]-*EH[csa]+ *)+" "" CXX_FLAGS "${CXX_FLAGS}")
|
||
string(REGEX REPLACE "( *[-/]-*EH[csa]+ *)+" "" C_FLAGS "${C_FLAGS}")
|
||
if (msvc_clr_enabled STREQUAL "")
|
||
if(NOT msvc_async_eh_enabled STREQUAL "")
|
||
add_compile_flags("C;CXX" "/EHa")
|
||
else()
|
||
add_compile_flags("C;CXX" "/EHsc")
|
||
endif()
|
||
endif()
|
||
endif(MSVC)
|
||
|
||
if(CC_HAS_WNO_ATTRIBUTES AND CMAKE_COMPILER_IS_GNU${CMAKE_PRIMARY_LANG}
|
||
AND CMAKE_${CMAKE_PRIMARY_LANG}_COMPILER_VERSION VERSION_LESS 9)
|
||
# GCC < 9.x generates false-positive warnings for optimization attributes
|
||
add_compile_flags("C;CXX" "-Wno-attributes")
|
||
endif()
|
||
|
||
# In C a global variable without a storage specifier (static/extern) and
|
||
# without an initialiser is called a ’tentative definition’. The
|
||
# language permits multiple tentative definitions in the single
|
||
# translation unit; i.e. int foo; int foo; is perfectly ok. GNU
|
||
# toolchain goes even further, allowing multiple tentative definitions
|
||
# in *different* translation units. Internally, variables introduced via
|
||
# tentative definitions are implemented as ‘common’ symbols. Linker
|
||
# permits multiple definitions if they are common symbols, and it picks
|
||
# one arbitrarily for inclusion in the binary being linked.
|
||
#
|
||
# -fno-common forces GNU toolchain to behave in a more
|
||
# standard-conformant way in respect to tentative definitions and it
|
||
# prevents common symbols generation. Since we are a cross-platform
|
||
# project it really makes sense. There are toolchains that don’t
|
||
# implement GNU style handling of the tentative definitions and there
|
||
# are platforms lacking proper support for common symbols (osx).
|
||
if(CC_HAS_FNO_COMMON)
|
||
add_compile_flags("C;CXX" "-fno-common")
|
||
endif()
|
||
|
||
if(CC_HAS_GGDB)
|
||
add_compile_flags("C;CXX" "-ggdb")
|
||
endif()
|
||
|
||
if(CC_HAS_WNO_UNKNOWN_PRAGMAS AND NOT HAVE_OPENMP)
|
||
add_compile_flags("C;CXX" "-Wno-unknown-pragmas")
|
||
endif()
|
||
|
||
if(CC_HAS_SECTIONS)
|
||
add_compile_flags("C;CXX" "-ffunction-sections" "-fdata-sections")
|
||
elseif(MSVC)
|
||
add_compile_flags("C;CXX" "/Gy")
|
||
endif()
|
||
|
||
# We must set -fno-omit-frame-pointer here, since we rely
|
||
# on frame pointer when getting a backtrace, and it must
|
||
# be used consistently across all object files.
|
||
# The same reasoning applies to -fno-stack-protector switch.
|
||
if(ENABLE_BACKTRACE)
|
||
if(CC_HAS_FNO_OMIT_FRAME_POINTER)
|
||
add_compile_flags("C;CXX" "-fno-omit-frame-pointer")
|
||
endif()
|
||
endif()
|
||
|
||
if(MSVC)
|
||
if(MSVC_VERSION LESS 1900)
|
||
message(FATAL_ERROR "At least \"Microsoft C/C++ Compiler\" version 19.0.24234.1 (Visual Studio 2015 Update 3) is required.")
|
||
endif()
|
||
if(NOT MSVC_VERSION LESS 1910)
|
||
add_compile_flags("CXX" "/Zc:__cplusplus")
|
||
endif()
|
||
add_compile_flags("C;CXX" "/utf-8")
|
||
else()
|
||
if(CC_HAS_WALL)
|
||
add_compile_flags("C;CXX" "-Wall")
|
||
endif()
|
||
if(CC_HAS_WEXTRA)
|
||
add_compile_flags("C;CXX" "-Wextra")
|
||
endif()
|
||
endif()
|
||
|
||
add_definitions("-D__STDC_FORMAT_MACROS=1")
|
||
add_definitions("-D__STDC_LIMIT_MACROS=1")
|
||
add_definitions("-D__STDC_CONSTANT_MACROS=1")
|
||
add_definitions("-D_HAS_EXCEPTIONS=1")
|
||
|
||
# Only add -Werror if it's a debug build, done by developers.
|
||
# Release builds should not cause extra trouble.
|
||
if(CC_HAS_WERROR AND (CI OR CMAKE_CONFIGURATION_TYPES OR CMAKE_BUILD_TYPE STREQUAL "Debug"))
|
||
if(MSVC)
|
||
add_compile_flags("C;CXX" "/WX")
|
||
elseif(CMAKE_COMPILER_IS_CLANG)
|
||
if(NOT CMAKE_${CMAKE_PRIMARY_LANG}_COMPILER_VERSION VERSION_LESS 6)
|
||
add_compile_flags("C;CXX" "-Werror")
|
||
endif()
|
||
elseif(CMAKE_COMPILER_IS_GNUCC)
|
||
if(NOT CMAKE_${CMAKE_PRIMARY_LANG}_COMPILER_VERSION VERSION_LESS 6)
|
||
add_compile_flags("C;CXX" "-Werror")
|
||
endif()
|
||
else()
|
||
add_compile_flags("C;CXX" "-Werror")
|
||
endif()
|
||
endif()
|
||
|
||
|
||
if(CMAKE_COMPILER_IS_GNU${CMAKE_PRIMARY_LANG}
|
||
AND CMAKE_${CMAKE_PRIMARY_LANG}_COMPILER_VERSION VERSION_LESS 5)
|
||
# G++ bug. http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31488
|
||
add_compile_flags("CXX" "-Wno-invalid-offsetof")
|
||
endif()
|
||
if(MINGW)
|
||
# Disable junk MINGW's warnings that issued due to incompatibilities
|
||
# and shortcomings of MINGW,
|
||
# since the code is checked by builds with GCC, CLANG and MSVC.
|
||
add_compile_flags("C;CXX" "-Wno-format-extra-args" "-Wno-format" "-Wno-cast-function-type" "-Wno-implicit-fallthrough")
|
||
endif()
|
||
|
||
if(ENABLE_ASAN)
|
||
add_compile_flags("C;CXX" "-fsanitize=address")
|
||
endif()
|
||
|
||
if(ENABLE_UBSAN)
|
||
add_compile_flags("C;CXX" "-fsanitize=undefined" "-fsanitize-undefined-trap-on-error")
|
||
endif()
|
||
|
||
if(ENABLE_GCOV)
|
||
if(NOT HAVE_GCOV)
|
||
message(FATAL_ERROR
|
||
"ENABLE_GCOV option requested but gcov library is not found")
|
||
endif()
|
||
|
||
add_compile_flags("C;CXX" "-fprofile-arcs" "-ftest-coverage")
|
||
set(EXE_LINKER_FLAGS "${EXE_LINKER_FLAGS} -fprofile-arcs -ftest-coverage")
|
||
set(SHARED_LINKER_FLAGS "${SHARED_LINKER_FLAGS} -fprofile-arcs -ftest-coverage")
|
||
set(MODULE_LINKER_FLAGS "${MODULE_LINKER_FLAGS} -fprofile-arcs -ftest-coverage")
|
||
# add_library(gcov SHARED IMPORTED)
|
||
endif()
|
||
|
||
if(ENABLE_GPROF)
|
||
add_compile_flags("C;CXX" "-pg")
|
||
endif()
|
||
|
||
if(CMAKE_COMPILER_IS_GNUCC AND LTO_ENABLED)
|
||
add_compile_flags("C;CXX" ${GCC_LTO_CFLAGS})
|
||
set(EXE_LINKER_FLAGS "${EXE_LINKER_FLAGS} ${GCC_LTO_CFLAGS} -fverbose-asm -fwhole-program")
|
||
set(SHARED_LINKER_FLAGS "${SHARED_LINKER_FLAGS} ${GCC_LTO_CFLAGS} -fverbose-asm")
|
||
set(MODULE_LINKER_FLAGS "${MODULE_LINKER_FLAGS} ${GCC_LTO_CFLAGS} -fverbose-asm")
|
||
if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5)
|
||
# Pass the same optimization flags to the linker
|
||
set(compile_flags "${CMAKE_C_FLAGS} ${CMAKE_C_FLAGS_${CMAKE_BUILD_TYPE_UPPERCASE}}")
|
||
set(EXE_LINKER_FLAGS "${EXE_LINKER_FLAGS} ${compile_flags}")
|
||
set(SHARED_LINKER_FLAGS "${SHARED_LINKER_FLAGS} ${compile_flags}")
|
||
set(MODULE_LINKER_FLAGS "${MODULE_LINKER_FLAGS} ${compile_flags}")
|
||
unset(compile_flags)
|
||
else()
|
||
add_compile_flags("CXX" "-flto-odr-type-merging")
|
||
endif()
|
||
endif()
|
||
|
||
if(MSVC AND NOT CMAKE_COMPILER_IS_CLANG AND LTO_ENABLED)
|
||
add_compile_flags("C;CXX" "/GL")
|
||
foreach(linkmode IN ITEMS EXE SHARED STATIC MODULE)
|
||
set(${linkmode}_LINKER_FLAGS "${${linkmode}_LINKER_FLAGS} /LTCG")
|
||
string(REGEX REPLACE "^(.*)(/INCREMENTAL:NO *)(.*)$" "\\1\\3" ${linkmode}_LINKER_FLAGS "${${linkmode}_LINKER_FLAGS}")
|
||
string(REGEX REPLACE "^(.*)(/INCREMENTAL:YES *)(.*)$" "\\1\\3" ${linkmode}_LINKER_FLAGS "${${linkmode}_LINKER_FLAGS}")
|
||
string(REGEX REPLACE "^(.*)(/INCREMENTAL *)(.*)$" "\\1\\3" ${linkmode}_LINKER_FLAGS "${${linkmode}_LINKER_FLAGS}")
|
||
string(STRIP "${${linkmode}_LINKER_FLAGS}" ${linkmode}_LINKER_FLAGS)
|
||
foreach(config IN LISTS CMAKE_CONFIGURATION_TYPES ITEMS Release MinSizeRel RelWithDebInfo Debug)
|
||
string(TOUPPER "${config}" config_uppercase)
|
||
if(DEFINED "CMAKE_${linkmode}_LINKER_FLAGS_${config_uppercase}")
|
||
string(REGEX REPLACE "^(.*)(/INCREMENTAL:NO *)(.*)$" "\\1\\3" altered_flags "${CMAKE_${linkmode}_LINKER_FLAGS_${config_uppercase}}")
|
||
string(REGEX REPLACE "^(.*)(/INCREMENTAL:YES *)(.*)$" "\\1\\3" altered_flags "${altered_flags}")
|
||
string(REGEX REPLACE "^(.*)(/INCREMENTAL *)(.*)$" "\\1\\3" altered_flags "${altered_flags}")
|
||
string(STRIP "${altered_flags}" altered_flags)
|
||
if(NOT "${altered_flags}" STREQUAL "${CMAKE_${linkmode}_LINKER_FLAGS_${config_uppercase}}")
|
||
set(CMAKE_${linkmode}_LINKER_FLAGS_${config_uppercase} "${altered_flags}" CACHE STRING "Altered: '/INCREMENTAL' removed for LTO" FORCE)
|
||
endif()
|
||
endif()
|
||
endforeach(config)
|
||
endforeach(linkmode)
|
||
unset(linkmode)
|
||
|
||
foreach(config IN LISTS CMAKE_CONFIGURATION_TYPES ITEMS Release MinSizeRel RelWithDebInfo)
|
||
foreach(lang IN ITEMS C CXX)
|
||
string(TOUPPER "${config}" config_uppercase)
|
||
if(DEFINED "CMAKE_${lang}_FLAGS_${config_uppercase}")
|
||
string(REPLACE "/O2" "/Ox" altered_flags "${CMAKE_${lang}_FLAGS_${config_uppercase}}")
|
||
if(NOT "${altered_flags}" STREQUAL "${CMAKE_${lang}_FLAGS_${config_uppercase}}")
|
||
set(CMAKE_${lang}_FLAGS_${config_uppercase} "${altered_flags}" CACHE STRING "Altered: '/O2' replaced by '/Ox' for LTO" FORCE)
|
||
endif()
|
||
endif()
|
||
unset(config_uppercase)
|
||
endforeach(lang)
|
||
endforeach(config)
|
||
unset(altered_flags)
|
||
unset(lang)
|
||
unset(config)
|
||
endif()
|
||
|
||
if(CMAKE_COMPILER_IS_CLANG AND OSX_ARCHITECTURES)
|
||
set(EXE_LINKER_FLAGS "${EXE_LINKER_FLAGS} -Wl,-keep_dwarf_unwind")
|
||
set(SHARED_LINKER_FLAGS "${SHARED_LINKER_FLAGS} -Wl,-keep_dwarf_unwind")
|
||
set(MODULE_LINKER_FLAGS "${MODULE_LINKER_FLAGS} -Wl,-keep_dwarf_unwind")
|
||
endif()
|
||
|
||
if(CMAKE_COMPILER_IS_CLANG AND LTO_ENABLED)
|
||
if(CMAKE_${CMAKE_PRIMARY_LANG}_COMPILER_VERSION VERSION_LESS 3.9)
|
||
set(CLANG_LTO_FLAG "-flto")
|
||
else()
|
||
set(CLANG_LTO_FLAG "-flto=thin")
|
||
endif()
|
||
add_compile_flags("C;CXX" ${CLANG_LTO_FLAG})
|
||
if(NOT MSVC)
|
||
set(EXE_LINKER_FLAGS "${EXE_LINKER_FLAGS} ${CLANG_LTO_FLAG} -fverbose-asm -fwhole-program")
|
||
set(SHARED_LINKER_FLAGS "${SHARED_LINKER_FLAGS} ${CLANG_LTO_FLAG} -fverbose-asm")
|
||
set(MODULE_LINKER_FLAGS "${MODULE_LINKER_FLAGS} ${CLANG_LTO_FLAG} -fverbose-asm")
|
||
endif()
|
||
endif()
|
||
|
||
# push C/CXX flags into the cache
|
||
if(CMAKE_CXX_COMPILER_LOADED)
|
||
set(CMAKE_CXX_FLAGS ${CXX_FLAGS} CACHE STRING "Flags used by the C++ compiler during all build types" FORCE)
|
||
unset(CXX_FLAGS)
|
||
endif()
|
||
if(CMAKE_C_COMPILER_LOADED)
|
||
set(CMAKE_C_FLAGS ${C_FLAGS} CACHE STRING "Flags used by the C compiler during all build types" FORCE)
|
||
unset(C_FLAGS)
|
||
endif()
|
||
set(CMAKE_EXE_LINKER_FLAGS ${EXE_LINKER_FLAGS} CACHE STRING "Flags used by the linker" FORCE)
|
||
set(CMAKE_SHARED_LINKER_FLAGS ${SHARED_LINKER_FLAGS} CACHE STRING "Flags used by the linker during the creation of dll's" FORCE)
|
||
set(CMAKE_STATIC_LINKER_FLAGS ${STATIC_LINKER_FLAGS} CACHE STRING "Flags used by the linker during the creation of static libraries" FORCE)
|
||
set(CMAKE_MODULE_LINKER_FLAGS ${MODULE_LINKER_FLAGS} CACHE STRING "Flags used by the linker during the creation of modules" FORCE)
|
||
unset(EXE_LINKER_FLAGS)
|
||
unset(SHARED_LINKER_FLAGS)
|
||
unset(STATIC_LINKER_FLAGS)
|
||
unset(MODULE_LINKER_FLAGS)
|
||
endmacro(setup_compile_flags)
|
||
|
||
if(CMAKE_CXX_COMPILER_LOADED)
|
||
# determine library for for std::filesystem
|
||
set(LIBCXX_FILESYSTEM "")
|
||
if(CMAKE_COMPILER_IS_CLANG)
|
||
if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.0)
|
||
set(LIBCXX_FILESYSTEM "c++experimental")
|
||
elseif(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 9.0)
|
||
set(LIBCXX_FILESYSTEM "stdc++fs")
|
||
endif()
|
||
elseif(CMAKE_COMPILER_IS_GNUCXX AND NOT MINGW)
|
||
if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.3 AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 9.0)
|
||
set(LIBCXX_FILESYSTEM "stdc++fs")
|
||
endif()
|
||
endif()
|
||
endif()
|
||
|
||
cmake_policy(POP)
|