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i2pd/build/CMakeLists.txt
Fabrice Fontaine 6b33250c59 build/CMakeLists.txt: enable C language 
Detection of libatomic is broken since version 2.47.0 and
b7f0d87daf
because C language is not enabled anymore:

-- Looking for __atomic_fetch_add_4 in atomic
-- Looking for __atomic_fetch_add_4 in atomic - not found
CMake Error at cmake_modules/CheckAtomic.cmake:59 (message):
  Host compiler appears to require libatomic, but cannot find it.
Call Stack (most recent call first):
  CMakeLists.txt:54 (include)

Indeed if C language is not enabled, the test will be run with the C++
compiler resulting in the following error:

Building CXX object CMakeFiles/cmTC_03d01.dir/CheckFunctionExists.cxx.o
        /home/fabrice/buildroot/output/host/bin/x86_64-linux-g++ --sysroot=/home/fabrice/buildroot/output/host/x86_64-buildroot-linux-gnu/sysroot   -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -O1 -g0 -D_FORTIFY_SOURCE=2 -DCHECK_FUNCTION_EXISTS=__atomic_fetch_add_4  -DNDEBUG -o CMakeFiles/cmTC_03d01.dir/CheckFunctionExists.cxx.o -c /home/fabrice/buildroot/output/build/i2pd-2.49.0/build/CMakeFiles/CMakeScratch/TryCompile-NApnv9/CheckFunctionExists.cxx
        <command-line>: error: new declaration ‘char __atomic_fetch_add_4()’ ambiguates built-in declaration ‘unsigned int __atomic_fetch_add_4(volatile void*, unsigned int, int)’ [-fpermissive]

whereas with a C compiler, we'll get:

Building C object CMakeFiles/cmTC_7e47b.dir/CheckFunctionExists.c.o
        /home/fabrice/buildroot/output/host/bin/x86_64-linux-gcc --sysroot=/home/fabrice/buildroot/output/host/x86_64-buildroot-linux-gnu/sysroot   -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -O1 -g0 -D_FORTIFY_SOURCE=2 -DCHECK_FUNCTION_EXISTS=__atomic_fetch_add_4  -DNDEBUG -o CMakeFiles/cmTC_7e47b.dir/CheckFunctionExists.c.o -c /home/fabrice/buildroot/output/build/i2pd-2.49.0/build/CMakeFiles/CMakeScratch/TryCompile-e0zFMG/CheckFunctionExists.c
        <command-line>: warning: conflicting types for built-in function ‘__atomic_fetch_add_4’; expected ‘unsigned int(volatile void *, unsigned int,  int)’ [-Wbuiltin-declaration-mismatch]

Fix #1908

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
2023-11-12 10:29:24 +00:00

394 lines
13 KiB
CMake
Raw Blame History

cmake_minimum_required(VERSION 3.7)
if(${CMAKE_VERSION} VERSION_LESS 3.22)
cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
else()
cmake_policy(VERSION 3.22)
endif()
# for debugging
#set(CMAKE_VERBOSE_MAKEFILE on)
# paths
set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake_modules")
set(CMAKE_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/..")
set(LIBI2PD_SRC_DIR ${CMAKE_SOURCE_DIR}/libi2pd)
set(LIBI2PD_CLIENT_SRC_DIR ${CMAKE_SOURCE_DIR}/libi2pd_client)
set(LANG_SRC_DIR ${CMAKE_SOURCE_DIR}/i18n)
set(DAEMON_SRC_DIR ${CMAKE_SOURCE_DIR}/daemon)
include(Version)
set_version("${LIBI2PD_SRC_DIR}/version.h" PROJECT_VERSION)
project(
i2pd
VERSION ${PROJECT_VERSION}
HOMEPAGE_URL "https://i2pd.website/"
LANGUAGES C CXX
)
# configurable options
option(WITH_AESNI "Use AES-NI instructions set" ON)
option(WITH_HARDENING "Use hardening compiler flags" OFF)
option(WITH_LIBRARY "Build library" ON)
option(WITH_BINARY "Build binary" ON)
option(WITH_STATIC "Static build" OFF)
option(WITH_UPNP "Include support for UPnP client" OFF)
option(WITH_GIT_VERSION "Use git commit info as version" OFF)
option(WITH_ADDRSANITIZER "Build with address sanitizer unix only" OFF)
option(WITH_THREADSANITIZER "Build with thread sanitizer unix only" OFF)
option(BUILD_TESTING "Build tests" OFF)
IF(BUILD_TESTING)
enable_testing()
ENDIF()
# Handle paths nicely
include(GNUInstallDirs)
# Architecture
include(TargetArch)
target_architecture(ARCHITECTURE)
include(CheckAtomic)
if(WITH_STATIC)
if(MSVC)
set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
endif()
endif()
include_directories(${LIBI2PD_SRC_DIR})
FILE(GLOB LIBI2PD_SRC ${LIBI2PD_SRC_DIR}/*.cpp)
add_library(libi2pd ${LIBI2PD_SRC})
set_target_properties(libi2pd PROPERTIES PREFIX "")
if(WITH_LIBRARY)
install(TARGETS libi2pd
EXPORT libi2pd
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
COMPONENT Libraries)
endif()
include_directories(${LIBI2PD_CLIENT_SRC_DIR})
FILE(GLOB CLIENT_SRC ${LIBI2PD_CLIENT_SRC_DIR}/*.cpp)
add_library(libi2pdclient ${CLIENT_SRC})
set_target_properties(libi2pdclient PROPERTIES PREFIX "")
if(WITH_LIBRARY)
install(TARGETS libi2pdclient
EXPORT libi2pdclient
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
COMPONENT Libraries)
endif()
include_directories(${LANG_SRC_DIR})
FILE(GLOB LANG_SRC ${LANG_SRC_DIR}/*.cpp)
add_library(libi2pdlang ${LANG_SRC})
set_target_properties(libi2pdlang PROPERTIES PREFIX "")
if(WITH_LIBRARY)
install(TARGETS libi2pdlang
EXPORT libi2pdlang
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
COMPONENT Libraries)
endif()
include_directories(${DAEMON_SRC_DIR})
set(DAEMON_SRC
"${DAEMON_SRC_DIR}/Daemon.cpp"
"${DAEMON_SRC_DIR}/HTTPServer.cpp"
"${DAEMON_SRC_DIR}/I2PControl.cpp"
"${DAEMON_SRC_DIR}/I2PControlHandlers.cpp"
"${DAEMON_SRC_DIR}/i2pd.cpp"
"${DAEMON_SRC_DIR}/UPnP.cpp"
)
if(WIN32)
set(WIN32_SRC_DIR ${CMAKE_SOURCE_DIR}/Win32)
include_directories(${WIN32_SRC_DIR})
list(APPEND DAEMON_SRC
"${WIN32_SRC_DIR}/DaemonWin32.cpp"
"${WIN32_SRC_DIR}/Win32App.cpp"
"${WIN32_SRC_DIR}/Win32Service.cpp"
"${WIN32_SRC_DIR}/Win32NetState.cpp"
)
file(GLOB WIN32_RC ${WIN32_SRC_DIR}/*.rc)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DWIN32_APP -DWIN32_LEAN_AND_MEAN -DNOMINMAX")
endif()
if(WITH_UPNP)
add_definitions(-DUSE_UPNP)
endif()
if(WITH_GIT_VERSION)
include(GetGitRevisionDescription)
git_describe(GIT_VERSION)
add_definitions(-DGITVER=${GIT_VERSION})
endif()
if(APPLE)
add_definitions(-DMAC_OSX)
endif()
if(HAIKU)
add_definitions(-D_DEFAULT_SOURCE -D_GNU_SOURCE)
endif()
if(MSVC)
add_definitions(-DWINVER=0x0600)
add_definitions(-D_WIN32_WINNT=0x0600)
else()
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Winvalid-pch -Wno-unused-parameter -Wno-uninitialized")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -pedantic")
# TODO: The following is incompatible with static build and enabled hardening for OpenWRT.
# Multiple definitions of __stack_chk_fail(libssp & libc)
if(NOT CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
set(CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL} -flto -s")
endif()
set(CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL} -ffunction-sections -fdata-sections")
set(CMAKE_EXE_LINKER_FLAGS_MINSIZEREL "-Wl,--gc-sections") # -flto is added from above
# check for c++17 & c++11 support
include(CheckCXXCompilerFlag)
CHECK_CXX_COMPILER_FLAG("-std=c++17" CXX17_SUPPORTED)
CHECK_CXX_COMPILER_FLAG("-std=c++11" CXX11_SUPPORTED)
if(CXX17_SUPPORTED)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17")
elseif(CXX11_SUPPORTED)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
else()
message(SEND_ERROR "C++17 nor C++11 standard not seems to be supported by compiler. Too old version?")
endif()
endif()
if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pipe")
if(WITH_HARDENING)
add_definitions("-D_FORTIFY_SOURCE=2")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wformat -Wformat-security -Werror=format-security")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fstack-protector --param ssp-buffer-size=4")
endif()
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
# more tweaks
if(LINUX)
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -stdlib=libstdc++") # required for <atomic>
list(APPEND CMAKE_REQUIRED_LIBRARIES "stdc++") # required to link with -stdlib=libstdc++
endif()
if(NOT APPLE)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unused-const-variable -Wno-overloaded-virtual -Wno-c99-extensions")
endif()
endif()
# compiler flags customization(by system)
if(UNIX)
list(APPEND DAEMON_SRC "${DAEMON_SRC_DIR}/UnixDaemon.cpp")
if(NOT(CMAKE_SYSTEM_NAME STREQUAL "OpenBSD" OR APPLE))
# "'sleep_for' is not a member of 'std::this_thread'" in gcc 4.7/4.8
add_definitions("-D_GLIBCXX_USE_NANOSLEEP=1")
endif()
endif()
# Note: AES-NI and AVX is available on x86-based CPU's.
# Here also ARM64 implementation, but currently we don't support it.
# MSVC is not supported due to different ASM processing, so we hope OpenSSL has its own checks to run optimized code.
if(WITH_AESNI AND (ARCHITECTURE MATCHES "x86_64" OR ARCHITECTURE MATCHES "i386"))
if(NOT MSVC)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -maes")
endif()
add_definitions(-D__AES__)
endif()
if(WITH_ADDRSANITIZER)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -fno-omit-frame-pointer")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=address")
endif()
if(WITH_THREADSANITIZER)
if(WITH_ADDRSANITIZER)
message(FATAL_ERROR "thread sanitizer option cannot be combined with address sanitizer")
else()
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=thread")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=thread")
endif()
endif()
# Use std::atomic instead of GCC builtins on macOS PowerPC:
# For more information refer to: https://github.com/PurpleI2P/i2pd/issues/1726#issuecomment-1306335111
# This has been fixed in Boost 1.81, nevertheless we retain the setting for the sake of compatibility.
if(APPLE AND CMAKE_OSX_ARCHITECTURES MATCHES "ppc")
add_definitions(-DBOOST_SP_USE_STD_ATOMIC)
endif()
# libraries
set(THREADS_PREFER_PTHREAD_FLAG ON)
find_package(Threads REQUIRED)
if(WITH_STATIC)
if(NOT MSVC)
set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
endif()
set(Boost_USE_STATIC_LIBS ON)
if(MSVC)
set(Boost_USE_STATIC_RUNTIME ON)
else()
set(Boost_USE_STATIC_RUNTIME OFF)
endif()
if(MSVC)
set(OPENSSL_MSVC_STATIC_RT ON)
endif()
set(OPENSSL_USE_STATIC_LIBS ON)
set(ZLIB_USE_STATIC_LIBS ON)
if(MSVC)
set(ZLIB_NAMES zlibstatic zlibstat)
else()
set(ZLIB_NAMES libz zlibstatic zlibstat zlib z)
endif()
if(WITH_UPNP)
set(MINIUPNPC_USE_STATIC_LIBS ON)
add_definitions(-DMINIUPNP_STATICLIB)
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()
# TODO: Consider separate compilation for LIBI2PD_SRC for library.
# No need in -fPIC overhead for binary if not interested in library
# HINT: revert c266cff CMakeLists.txt: compilation speed up
if(NOT MSVC)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC")
endif()
add_definitions(-DBOOST_ATOMIC_DYN_LINK -DBOOST_SYSTEM_DYN_LINK -DBOOST_FILESYSTEM_DYN_LINK -DBOOST_PROGRAM_OPTIONS_DYN_LINK -DBOOST_DATE_TIME_DYN_LINK -DBOOST_REGEX_DYN_LINK)
if(WIN32)
set(Boost_USE_STATIC_LIBS OFF)
set(Boost_USE_STATIC_RUNTIME OFF)
endif()
endif()
find_package(Boost REQUIRED COMPONENTS system filesystem program_options date_time OPTIONAL_COMPONENTS atomic)
if(NOT DEFINED Boost_FOUND)
message(SEND_ERROR "Boost is not found, or your boost version was below 1.46. Please download Boost!")
endif()
find_package(OpenSSL REQUIRED)
if(NOT DEFINED OPENSSL_FOUND)
message(SEND_ERROR "Could not find OpenSSL. Please download and install it first!")
endif()
if(OPENSSL_VERSION VERSION_GREATER_EQUAL "3.0.0")
add_definitions(-DOPENSSL_SUPPRESS_DEPRECATED)
endif()
if(WITH_UPNP)
find_package(MiniUPnPc REQUIRED)
if(NOT MINIUPNPC_FOUND)
message(SEND_ERROR "Could not find MiniUPnPc. Please download and install it first!")
else()
include_directories(SYSTEM ${MINIUPNPC_INCLUDE_DIR})
endif()
endif()
find_package(ZLIB)
if(ZLIB_FOUND)
link_directories(${ZLIB_ROOT}/lib)
endif()
# load includes
include_directories(SYSTEM ${Boost_INCLUDE_DIRS} ${OPENSSL_INCLUDE_DIR} ${ZLIB_INCLUDE_DIR})
# show summary
message(STATUS "---------------------------------------")
message(STATUS "Build type : ${CMAKE_BUILD_TYPE}")
message(STATUS "Compiler vendor : ${CMAKE_CXX_COMPILER_ID}")
message(STATUS "Compiler version : ${CMAKE_CXX_COMPILER_VERSION}")
message(STATUS "Compiler path : ${CMAKE_CXX_COMPILER}")
message(STATUS "Architecture : ${ARCHITECTURE}")
message(STATUS "Install prefix: : ${CMAKE_INSTALL_PREFIX}")
message(STATUS "Options:")
message(STATUS " AESNI : ${WITH_AESNI}")
message(STATUS " HARDENING : ${WITH_HARDENING}")
message(STATUS " LIBRARY : ${WITH_LIBRARY}")
message(STATUS " BINARY : ${WITH_BINARY}")
message(STATUS " STATIC BUILD : ${WITH_STATIC}")
message(STATUS " UPnP : ${WITH_UPNP}")
if(WITH_GIT_VERSION)
message(STATUS " GIT VERSION : ${WITH_GIT_VERSION} (${GIT_VERSION})")
else()
message(STATUS " GIT VERSION : ${WITH_GIT_VERSION}")
endif()
message(STATUS " ADDRSANITIZER : ${WITH_ADDRSANITIZER}")
message(STATUS " THREADSANITIZER : ${WITH_THREADSANITIZER}")
message(STATUS "---------------------------------------")
if(WITH_BINARY)
if(WIN32)
add_executable("${PROJECT_NAME}" WIN32 ${DAEMON_SRC} ${WIN32_RC})
else()
add_executable("${PROJECT_NAME}" ${DAEMON_SRC})
endif()
if(WIN32)
list(APPEND MINGW_EXTRA "wsock32" "ws2_32" "iphlpapi")
# OpenSSL may require Crypt32 library on MSVC build, which is not added by CMake lesser than 3.21
if(MSVC AND ${CMAKE_VERSION} VERSION_LESS 3.21)
list(APPEND MINGW_EXTRA "crypt32")
endif()
endif()
if(WITH_STATIC)
if(NOT MSVC)
set_target_properties("${PROJECT_NAME}" PROPERTIES LINK_FLAGS "-static")
endif()
endif()
if(WITH_HARDENING AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
set_target_properties("${PROJECT_NAME}" PROPERTIES LINK_FLAGS "-z relro -z now")
endif()
# FindBoost pulls pthread for thread which is broken for static linking at least on Ubuntu 15.04
list(GET Boost_LIBRARIES -1 LAST_Boost_LIBRARIES)
if(${LAST_Boost_LIBRARIES} MATCHES ".*pthread.*")
list(REMOVE_AT Boost_LIBRARIES -1)
endif()
# synchronization library is incompatible with Windows 7
if(WIN32)
get_target_property(BOOSTFSLIBS Boost::filesystem INTERFACE_LINK_LIBRARIES)
list(REMOVE_ITEM BOOSTFSLIBS synchronization)
set_target_properties(Boost::filesystem PROPERTIES INTERFACE_LINK_LIBRARIES "${BOOSTFSLIBS}")
endif()
if(WITH_STATIC)
set(DL_LIB ${CMAKE_DL_LIBS})
endif()
target_link_libraries("${PROJECT_NAME}" libi2pd libi2pdclient libi2pdlang ${Boost_LIBRARIES} OpenSSL::SSL OpenSSL::Crypto ${MINIUPNPC_LIBRARY} ZLIB::ZLIB Threads::Threads ${MINGW_EXTRA} ${DL_LIB} ${CMAKE_REQUIRED_LIBRARIES})
install(TARGETS "${PROJECT_NAME}" RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} COMPONENT Runtime)
set(APPS "\${CMAKE_INSTALL_PREFIX}/bin/${PROJECT_NAME}${CMAKE_EXECUTABLE_SUFFIX}")
set(DIRS "${Boost_LIBRARY_DIR};${OPENSSL_INCLUDE_DIR}/../bin;${ZLIB_INCLUDE_DIR}/../bin;/mingw32/bin")
endif()
if(BUILD_TESTING)
add_subdirectory(${CMAKE_SOURCE_DIR}/tests ${CMAKE_CURRENT_BINARY_DIR}/tests)
endif()
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