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CMake: fix static builds, add LTO for MinSizeRel

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This commit is contained in:
Mikhail Titov 2015-06-10 01:07:39 -05:00
parent 0e8bdf8299
commit 44768e92ad
1 changed files with 51 additions and 13 deletions
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64
build/CMakeLists.txt
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@ -82,15 +82,18 @@ source_group ("Header Files" FILES ${HEADERS})
source_group ("Source Files" FILES ${COMMON_SRC} ${DAEMON_SRC} ${LIBRARY_SRC})
# Default build is Debug
if (CMAKE_BUILD_TYPE STREQUAL "Release")
add_definitions( "-pedantic" )
else ()
if (NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE Debug)
endif ()
# compiler flags customization (by vendor)
if (NOT MSVC)
add_definitions ( "-Wall -Wextra -fPIC" )
set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra" )
set( CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -pedantic" )
# TODO: The following is incompatible with static build and enabled hardening for OpenWRT.
# Multiple definitions of __stack_chk_fail (libssp & libc)
set( CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL} -flto -s -ffunction-sections -fdata-sections" )
set( CMAKE_EXE_LINKER_FLAGS_MINSIZEREL "-Wl,--gc-sections" ) # -flto is added from above
endif ()
# check for c++11 support
@ -136,10 +139,44 @@ if (WITH_AESNI)
endif()
# libraries
# TODO: once CMake 3.1+ becomes mainstream, see e.g. http://stackoverflow.com/a/29871891/673826
# use imported Threads::Threads instead
set(THREADS_PREFER_PTHREAD_FLAG ON)
find_package ( Threads REQUIRED )
if(THREADS_HAVE_PTHREAD_ARG) # compile time flag
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
endif()
if (WITH_STATIC)
set(Boost_USE_STATIC_LIBS ON)
set(Boost_USE_STATIC_RUNTIME ON)
if (WIN32)
# http://www.cmake.org/Wiki/CMake_FAQ#Dynamic_Replace
# Note that you might need to rebuild Crypto++
foreach(flag_var
CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
if(${flag_var} MATCHES "/MD")
string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
endif(${flag_var} MATCHES "/MD")
endforeach(flag_var)
else ()
set(CMAKE_FIND_LIBRARY_SUFFIXES .a)
endif ()
set(BUILD_SHARED_LIBS OFF)
if (${CMAKE_CXX_COMPILER} MATCHES ".*-openwrt-.*")
set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread" )
# set( CMAKE_THREAD_LIBS_INIT "gcc_eh -Wl,--whole-archive -lpthread -Wl,--no-whole-archive" )
set( CMAKE_THREAD_LIBS_INIT "gcc_eh -Wl,-u,pthread_create,-u,pthread_once,-u,pthread_mutex_lock,-u,pthread_mutex_unlock,-u,pthread_join,-u,pthread_equal,-u,pthread_detach,-u,pthread_cond_wait,-u,pthread_cond_signal,-u,pthread_cond_destroy,-u,pthread_cond_broadcast,-u,pthread_cancel" )
endif ()
else()
if (NOT WIN32)
# TODO: Consider separate compilation for COMMON_SRC for library.
# No need in -fPIC overhead for binary if not interested in library
# HINT: revert c266cff CMakeLists.txt: compilation speed up
set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC" )
endif ()
add_definitions(-DBOOST_ALL_DYN_LINK)
endif ()
find_package ( Boost COMPONENTS system filesystem regex program_options date_time thread chrono REQUIRED )
@ -183,19 +220,20 @@ if (WITH_BINARY)
add_executable ( "${PROJECT_NAME}-bin" ${DAEMON_SRC} )
if(NOT MSVC) # FIXME: incremental linker file name (.ilk) collision for dll & exe
set_target_properties("${PROJECT_NAME}-bin" PROPERTIES OUTPUT_NAME "${PROJECT_NAME}")
if (WITH_STATIC)
set_target_properties("${PROJECT_NAME}-bin" PROPERTIES LINK_FLAGS "-static" )
endif ()
endif()
if (WITH_HARDENING AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
set_target_properties("${PROJECT_NAME}-bin" PROPERTIES LINK_FLAGS "-z relro -z now" )
endif ()
if (WITH_STATIC)
set(BUILD_SHARED_LIBS OFF)
set_target_properties("${PROJECT_NAME}-bin" PROPERTIES LINK_FLAGS "-static" )
else()
add_definitions(-DBOOST_ALL_DYN_LINK)
endif ()
# FindBoost pulls pthread for thread which is broken for static linking at least on Ubuntu 15.04
list(GET Boost_LIBRARIES -1 LAST_Boost_LIBRARIES)
if(${LAST_Boost_LIBRARIES} MATCHES ".*pthread.*")
list(REMOVE_AT Boost_LIBRARIES -1)
endif()
target_link_libraries( "${PROJECT_NAME}-bin" common ${Boost_LIBRARIES} ${CRYPTO++_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT} )
install(TARGETS "${PROJECT_NAME}-bin" RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} )
@ -207,9 +245,9 @@ endif ()
if (WITH_LIBRARY)
if (MSVC)
# FIXME: DLL would not have any symbols unless we use __declspec(dllexport) through out the code
add_library(${PROJECT_NAME} ${LIBRARY_SRC})
add_library(${PROJECT_NAME} STATIC ${LIBRARY_SRC})
else ()
add_library(${PROJECT_NAME} SHARED ${LIBRARY_SRC})
add_library(${PROJECT_NAME} ${LIBRARY_SRC})
target_link_libraries( ${PROJECT_NAME} common ${Boost_LIBRARIES} ${CRYPTO++_LIBRARIES})
endif ()
install(TARGETS ${PROJECT_NAME} RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})