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f3d8644e63
rspamd/cmake/Toolset.cmake
Christian Göttsche 11a64f8b09 [Minor] Print always IPO status
2020-04-11 14:06:55 +02:00

197 lines
8.3 KiB
CMake
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option (ENABLE_FAST_MATH "Build rspamd with fast math compiler flag [default: ON]" ON)
if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
SET (COMPILER_GCC 1)
elseif(CMAKE_C_COMPILER_ID MATCHES "Clang|AppleClang")
SET (COMPILER_CLANG 1)
endif()
SET (COMPILER_FAST_MATH "")
if (ENABLE_FAST_MATH MATCHES "ON")
# We need to keep nans and infinities, so cannot keep all fast math there
IF (COMPILER_CLANG)
SET (COMPILER_FAST_MATH "-fassociative-math -freciprocal-math -fno-signed-zeros -ffp-contract=fast")
ELSE()
SET (COMPILER_FAST_MATH "-funsafe-math-optimizations -fno-math-errno")
ENDIF ()
endif ()
if (CMAKE_GENERATOR STREQUAL "Ninja")
# Turn on colored output. https://github.com/ninja-build/ninja/wiki/FAQ
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fdiagnostics-color=always")
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fdiagnostics-color=always")
endif ()
if (COMPILER_GCC)
# Require minimum version of gcc
set (GCC_MINIMUM_VERSION 4)
if (CMAKE_C_COMPILER_VERSION VERSION_LESS ${GCC_MINIMUM_VERSION} AND NOT CMAKE_VERSION VERSION_LESS 2.8.9)
message (FATAL_ERROR "GCC version must be at least ${GCC_MINIMUM_VERSION}.")
endif ()
elseif (COMPILER_CLANG)
# Require minimum version of clang
set (CLANG_MINIMUM_VERSION 4)
if (CMAKE_C_COMPILER_VERSION VERSION_LESS ${CLANG_MINIMUM_VERSION})
message (FATAL_ERROR "Clang version must be at least ${CLANG_MINIMUM_VERSION}.")
endif ()
ADD_COMPILE_OPTIONS(-Wno-unused-command-line-argument)
else ()
message (WARNING "You are using an unsupported compiler ${CMAKE_C_COMPILER_ID}. Compilation has only been tested with Clang 4+ and GCC 4+.")
endif ()
option(LINKER_NAME "Linker name or full path")
find_program(LLD_PATH NAMES "ld.lld" "lld")
find_program(GOLD_PATH NAMES "ld.gold" "gold")
if(NOT LINKER_NAME)
if(LLD_PATH)
set(LINKER_NAME "lld")
elseif(GOLD_PATH)
set(LINKER_NAME "gold")
else()
message(STATUS "Use generic 'ld' as a linker")
endif()
endif()
if(LINKER_NAME)
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fuse-ld=${LINKER_NAME}")
set (CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -fuse-ld=${LINKER_NAME}")
message(STATUS "Using custom linker by name: ${LINKER_NAME}")
endif ()
option (ENABLE_STATIC "Enable static compiling [default: OFF]" OFF)
if (ENABLE_STATIC MATCHES "ON")
MESSAGE(STATUS "Static build of rspamd implies that the target binary will be *GPL* licensed")
SET(GPL_RSPAMD_BINARY 1)
SET(CMAKE_SKIP_INSTALL_RPATH ON)
SET(BUILD_STATIC 1)
SET(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
SET(BUILD_SHARED_LIBRARIES OFF)
SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static")
SET(LINK_TYPE "STATIC")
SET(NO_SHARED "ON")
# Dirty hack for cmake
SET(CMAKE_EXE_LINK_DYNAMIC_C_FLAGS) # remove -Wl,-Bdynamic
SET(CMAKE_EXE_LINK_DYNAMIC_CXX_FLAGS)
SET(CMAKE_SHARED_LIBRARY_C_FLAGS) # remove -fPIC
SET(CMAKE_SHARED_LIBRARY_CXX_FLAGS)
SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS) # remove -rdynamic
SET(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS)
else ()
if (NO_SHARED MATCHES "OFF")
SET(LINK_TYPE "SHARED")
else ()
SET(LINK_TYPE "STATIC")
endif ()
endif ()
# Legacy options support
option (ENABLE_COVERAGE "Build rspamd with code coverage options [default: OFF]" OFF)
option (ENABLE_OPTIMIZATION "Enable extra optimizations [default: OFF]" OFF)
option (SKIP_RELINK_RPATH "Skip relinking and full RPATH for the install tree" OFF)
option (ENABLE_FULL_DEBUG "Build rspamd with all possible debug [default: OFF]" OFF)
if(NOT CMAKE_BUILD_TYPE)
if (ENABLE_FULL_DEBUG MATCHES "ON")
set(CMAKE_BUILD_TYPE Debug CACHE STRING "" FORCE)
endif()
if (ENABLE_COVERAGE MATCHES "ON")
set(CMAKE_BUILD_TYPE Coverage CACHE STRING "" FORCE)
endif()
if (ENABLE_OPTIMIZATION MATCHES "ON")
set(CMAKE_BUILD_TYPE Release CACHE STRING "" FORCE)
endif()
endif()
if (CMAKE_CONFIGURATION_TYPES) # multiconfig generator?
set (CMAKE_CONFIGURATION_TYPES "Debug;RelWithDebInfo;Release;Coverage" CACHE STRING "" FORCE)
else()
if (NOT CMAKE_BUILD_TYPE)
if (NOT SANITIZE)
message(STATUS "Defaulting to release build.")
set(CMAKE_BUILD_TYPE Release CACHE STRING "" FORCE)
else ()
message(STATUS "Defaulting to debug build due to sanitizers being enabled.")
set(CMAKE_BUILD_TYPE Debug CACHE STRING "" FORCE)
endif ()
endif()
set_property(CACHE CMAKE_BUILD_TYPE PROPERTY HELPSTRING "Choose the type of build")
set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug;Release;Coverage")
endif()
string(TOUPPER ${CMAKE_BUILD_TYPE} CMAKE_BUILD_TYPE_UC)
message (STATUS "CMAKE_BUILD_TYPE: ${CMAKE_BUILD_TYPE_UC}")
set(CMAKE_C_FLAGS_COVERAGE "${CMAKE_C_FLAGS} -O1 --coverage -fno-inline -fno-default-inline -fno-inline-small-functions ${COMPILER_FAST_MATH}")
set(CMAKE_CXX_FLAGS_COVERAGE "${CMAKE_CXX_FLAGS} -O1 --coverage -fno-inline -fno-default-inline -fno-inline-small-functions ${COMPILER_FAST_MATH}")
if (COMPILER_GCC)
# GCC flags
set (COMPILER_DEBUG_FLAGS "-g -ggdb -g3 -ggdb3")
set (CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELEASE} -O2 ${COMPILER_FAST_MATH} ${COMPILER_DEBUG_FLAGS}")
set (CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELEASE} -O2 ${COMPILER_FAST_MATH} ${COMPILER_DEBUG_FLAGS}")
set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O3 ${COMPILER_FAST_MATH} -fomit-frame-pointer")
set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3 ${COMPILER_FAST_MATH} -fomit-frame-pointer")
if (ENABLE_FULL_DEBUG MATCHES "ON")
if (COMPILER_GCC)
# Check support of -fanalyzer
CHECK_C_COMPILER_FLAG(-fanalyzer SUPPORT_FANALYZER)
if (SUPPORT_FANALYZER)
set (CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -fanalyzer")
#set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -fanalyzer")
endif()
endif ()
set (CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -O0 ${COMPILER_DEBUG_FLAGS}")
set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -O0 ${COMPILER_DEBUG_FLAGS}")
else()
set (CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Og ${COMPILER_DEBUG_FLAGS}")
set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -Og ${COMPILER_DEBUG_FLAGS}")
endif()
else ()
# Clang flags
set (COMPILER_DEBUG_FLAGS "-g -glldb -gdwarf-aranges -gdwarf-4")
set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O2 -fomit-frame-pointer ${COMPILER_FAST_MATH}")
set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2 -fomit-frame-pointer ${COMPILER_FAST_MATH}")
set (CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELEASE} -O2 ${COMPILER_FAST_MATH} ${COMPILER_DEBUG_FLAGS}")
set (CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELEASE} -O2 ${COMPILER_FAST_MATH} ${COMPILER_DEBUG_FLAGS}")
set (CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -O0 ${COMPILER_DEBUG_FLAGS}")
set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -O0 ${COMPILER_DEBUG_FLAGS}")
endif()
if (CMAKE_BUILD_TYPE_UC MATCHES "RELEASE|RELWITHDEBINFO")
set(ENABLE_LTO_INIT ON)
else()
set(ENABLE_LTO_INIT OFF)
endif()
option(ENABLE_LTO "Build rspamd with Link Time Optimization if supported [default: ${ENABLE_LTO_INIT}]" ${ENABLE_LTO_INIT})
if (CMAKE_BUILD_TYPE_UC MATCHES "COVERAGE")
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} --coverage")
message (STATUS "IPO not enabled for COVERAGE build")
elseif (ENABLE_LTO)
if (${CMAKE_VERSION} VERSION_GREATER "3.9.0")
cmake_policy (SET CMP0069 NEW)
include (CheckIPOSupported)
check_ipo_supported (RESULT SUPPORT_LTO OUTPUT LTO_DIAG )
if (SUPPORT_LTO)
set (CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
message (STATUS "Enable IPO for the ${CMAKE_BUILD_TYPE} build")
else ()
message(WARNING "IPO is not supported: ${LTO_DIAG}")
endif ()
endif ()
else ()
message (STATUS "IPO not enabled for the ${CMAKE_BUILD_TYPE} build")
endif ()
message (STATUS "Final CFLAGS: ${CMAKE_C_FLAGS} ${CMAKE_C_FLAGS_${CMAKE_BUILD_TYPE_UC}}")
message (STATUS "Final CXXFLAGS: ${CMAKE_CXX_FLAGS} ${CMAKE_C_FLAGS_${CMAKE_BUILD_TYPE_UC}}")
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