forked from ibphoenix/tomsfastmath
224 lines
7.5 KiB
CMake
224 lines
7.5 KiB
CMake
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##
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## THIS IS THE MASTER FILE
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## It contains some basic defaults and defintions that are inherited by the projects
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##
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################################################################################
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# CONTENTS
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#
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# Project header
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# CMake globals
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# Project Settings
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# Options
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# Targets
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# Testing (TODO)
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# Packaging (TODO)
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################################################################################
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cmake_minimum_required(VERSION 3.25 FATAL_ERROR)
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set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/")
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include(ConfigSafeGuards)
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################################################################################
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#
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# Project header
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#
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#################################################################################
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# Suppress "Policy CMP0066 is not set"
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# This policy provides compatibility for projects that do not expect
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# config-specific compiler flags to be used.
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# See https://cmake.org/cmake/help/latest/policy/CMP0066.html
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#set (CMAKE_POLICY_WARNING_CMP0066 OFF)
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cmake_minimum_required(VERSION 3.10)
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# tomsfastmath - modified from CMakeLists.txt created for libtomath
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project (TOMSFASTMATH
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VERSION 0.13.1
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DESCRIPTION "TomsFastMath is meant to be a very fast yet still fairly portable and easy to port large integer arithmetic library written in ISO C."
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HOMEPAGE_URL "https://github.com/libtom/tomsfastmath"
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LANGUAGES C)
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# package release version
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# bump if re-releasing the same VERSION + patches
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# set to 1 if releasing a new VERSION
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set(PACKAGE_RELEASE_VERSION 1)
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################################################################################
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#
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# CMake Global Settings
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#
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################################################################################
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# Allow use of function cmake_print_variables to print vars to output
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# See https://cmake.org/cmake/help/latest/module/CMakePrintHelpers.html
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include(CMakePrintHelpers)
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set(CMAKE_EXPORT_COMPILE_COMMANDS ON CACHE INTERNAL "Export compile_commands.json to support editors such as Kate, Visual Studio Code, Vim etc.")
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set(CMAKE_VERBOSE_MAKEFILE ON CACHE INTERNAL "Generate verbose makefile")
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# For tomsfastmath we use Build, although convention is to use all lowercase
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set(CMAKE_BINARY_DIR ${CMAKE_SOURCE_DIR}/Build)
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################################################################################
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#
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# Project Settings
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#
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#################################################################################
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# Define build mode - this must be executed AFTER the project command otherwise
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# the cmake compiler will complain that CMAKE_BUILD_TYPE is uninitialised.
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message(STATUS "CMAKE_BUILD_TYPE is ${CMAKE_BUILD_TYPE}")
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if (NOT DEFINED CMAKE_BUILD_TYPE OR "${CMAKE_BUILD_TYPE}" STREQUAL "")
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set(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING "Choose the type of build...")
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endif()
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if ( UNIX )
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set(CMAKE_INSTALL_PREFIX /opt/fireswarm CACHE PATH "Default installation directory" FORCE)
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elseif ( WIN32 )
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set(CMAKE_INSTALL_PREFIX $ENV{ProgramFiles}/fireswarm CACHE PATH "Default installation directory" FORCE)
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endif()
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################################################################################
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#
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# Option Settings
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#
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#################################################################################
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# ### Options: Things you can set via commandline options to cmake (e.g. -DTOMSFASTMATH_DISABLE_LIBCXX=[ON|OFF])
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option(BUILD_SHARED_LIBS "Build shared library" ON)
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option(TOMSFASTMATH_DISABLE_LIBCXX "Do not use libc++, even if available" ON)
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option(ENABLE_WARNINGS_SETTINGS "Allow target_set_warnings to add flags and defines.
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Set this to OFF if you want to provide your own warning parameters.
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See cmake/Warnings.cmake for more info." ON)
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option(ENABLE_LTO "Enable link time optimization" ON)
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include(LTO)
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include(Warnings)
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include(functions)
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include(sources)
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include(CompilerSettings)
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# Check for LTO (Link-time optimisation) support.
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find_lto(CXX)
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include_directories( "src/" "src/headers" )
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include(cmake/sources.cmake)
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# The only direct cmake argument for now
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option(BUILD_SHARED_LIBS "Build shared library and only the shared library if \"ON\", default is static" OFF)
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#-----------------------------------------------------------------------------
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# Compose CFLAGS
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#-----------------------------------------------------------------------------
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# Some information ported from makefile_include.mk
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if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
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message(STATUS "Setting build type to 'Release' as none was specified.")
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set(CMAKE_BUILD_TYPE "Release")
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endif()
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# We only differentiate between MSVC and GCC-compatible compilers
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if(MSVC)
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set(LTM_C_FLAGS -W3)
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elseif(WATCOM)
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set(LTM_C_FLAGS -fo=.obj -oaxt -3r -w3)
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else()
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set(LTM_C_FLAGS -Wall -Wsign-compare -Wextra -Wshadow
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-Wdeclaration-after-statement -Wbad-function-cast -Wcast-align
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-Wstrict-prototypes -Wpointer-arith -Wsystem-headers)
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set(CMAKE_C_FLAGS_DEBUG "-g3")
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set(CMAKE_C_FLAGS_RELEASE "-O3 -funroll-loops -fomit-frame-pointer")
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set(CMAKE_C_FLAGS_RELWITHDEBINFO "-g3 -O2")
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set(CMAKE_C_FLAGS_MINSIZEREL "-Os")
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endif()
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# What compiler do we have and what are their...uhm... peculiarities
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if(CMAKE_C_COMPILER_ID MATCHES "(C|c?)lang")
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list(APPEND LTM_C_FLAGS -Wno-typedef-redefinition -Wno-tautological-compare -Wno-builtin-requires-header)
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# Clang requires at least '-O1' for dead code elimination
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set(CMAKE_C_FLAGS_DEBUG "-O1 ${CMAKE_C_FLAGS_DEBUG}")
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endif()
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if(CMAKE_C_COMPILER MATCHES "mingw")
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list(APPEND LTM_C_FLAGS -Wno-shadow -Wno-expansion-to-defined -Wno-declaration-after-statement -Wno-bad-function-cast)
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endif()
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if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
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list(APPEND LTM_C_FLAGS -Wno-nullability-completeness)
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endif()
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if(CMAKE_SYSTEM_NAME MATCHES "CYGWIN")
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list(APPEND LTM_C_FLAGS -no-undefined)
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endif()
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# TODO: coverage (lgcov)
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# If the user set the environment variables at generate-time, append them
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# in order to allow overriding our defaults.
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# ${LTM_CFLAGS} means the user passed it via sth like:
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# $ cmake -DLTM_CFLAGS="foo"
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list(APPEND LTM_C_FLAGS ${LTM_CFLAGS})
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list(APPEND LTM_LD_FLAGS ${LTM_LDFLAGS})
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#-----------------------------------------------------------------------------
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# library target
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#-----------------------------------------------------------------------------
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add_library( ${PROJECT_NAME} SHARED
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${TFM_SOURCE}
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${TFM_HEADERS}
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)
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target_include_directories(${PROJECT_NAME} PUBLIC
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$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
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$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME}>
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)
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target_compile_options(${PROJECT_NAME} BEFORE PRIVATE
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${LTM_C_FLAGS}
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)
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target_link_options(${PROJECT_NAME} BEFORE PRIVATE
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${LTM_LD_FLAGS}
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)
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set(PUBLIC_HEADERS tfm.h)
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set_target_properties(${PROJECT_NAME} PROPERTIES
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OUTPUT_NAME tomsfastmath
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VERSION ${PROJECT_VERSION}
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SOVERSION ${PROJECT_VERSION_MAJOR}
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PUBLIC_HEADER "${PUBLIC_HEADERS}"
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)
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option(COMPILE_LTO "Build with LTO enabled")
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if(COMPILE_LTO)
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check_ipo_supported(RESULT COMPILER_SUPPORTS_LTO)
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if(COMPILER_SUPPORTS_LTO)
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set_property(TARGET ${PROJECT_NAME} PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
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else()
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message(SEND_ERROR "This compiler does not support LTO. Reconfigure ${PROJECT_NAME} with -DCOMPILE_LTO=OFF.")
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endif()
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endif()
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################################################################################
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################################################################################
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################################################################################
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################################################################################
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