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simgear/CMakeLists.txt

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CMake
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cmake_minimum_required (VERSION 3.10)
# OpenGL VND policy : use the old definition for now, until we can audit this
if(POLICY CMP0072)
cmake_policy(SET CMP0072 OLD)
endif()
if(POLICY CMP0093)
cmake_policy(SET CMP0093 NEW)
endif()
message(STATUS "CMAKE Build type: ${CMAKE_BUILD_TYPE}")
# Set a default build type if none was specified
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
message(STATUS "Setting build type to 'Debug' as none was specified.")
set(CMAKE_BUILD_TYPE Debug CACHE STRING "Choose the type of build." FORCE)
# Set the possible values of build type for cmake-gui
set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release"
"MinSizeRel" "RelWithDebInfo")
endif()
include (CheckFunctionExists)
include (CheckIncludeFile)
include (CheckLibraryExists)
include (CheckCXXSourceCompiles)
include (CheckCXXCompilerFlag)
include (GenerateExportHeader)
# only relevant for building shared libs but let's set it regardless
set(CMAKE_OSX_RPATH 1)
set(CMAKE_OSX_DEPLOYMENT_TARGET "10.12" CACHE STRING "Minimum OS X deployment version")
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED YES)
# read 'version' file into a variable (stripping any newlines or spaces)
file(READ simgear-version versionFile)
string(STRIP ${versionFile} SIMGEAR_VERSION)
project(SimGear VERSION ${SIMGEAR_VERSION} LANGUAGES C CXX)
# add a dependency on the version file
set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS version)
set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS TRUE)
# use simgear version also as the SO version (if building SOs)
SET(SIMGEAR_SOVERSION ${SIMGEAR_VERSION})
# Warning when build is not an out-of-source build.
string(COMPARE EQUAL "${CMAKE_SOURCE_DIR}" "${CMAKE_BINARY_DIR}" InSourceBuild)
if(InSourceBuild)
message(WARNING "Avoid building inside the source tree!")
message(WARNING "Create a separate build directory instead (i.e. 'sgbuild') and call CMake from there: ")
message(WARNING " mkdir ../sgbuild && cd ../sgbuild && cmake ${CMAKE_SOURCE_DIR}")
endif(InSourceBuild)
# We have some custom .cmake scripts not in the official distribution.
set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/CMakeModules;${CMAKE_MODULE_PATH}")
include(Packaging)
# Change the default build type to something fast
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE Release CACHE STRING
"Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel."
FORCE)
endif(NOT CMAKE_BUILD_TYPE)
# Determine name of library installation directory, i.e. "lib" vs "lib64", which
# differs between all Debian-based vs all other Linux distros.
# See cmake bug #11964, http://cmake.org/gitweb?p=cmake.git;a=commit;h=126c993d
include(GNUInstallDirs)
message(STATUS "Library installation directory: ${CMAKE_INSTALL_LIBDIR}")
#####################################################################################
# Configure library search paths
#####################################################################################
if (NOT MSVC)
option(SIMGEAR_SHARED "Set to ON to build SimGear as a shared library/framework" OFF)
option(SYSTEM_EXPAT "Set to ON to build SimGear using the system expat library" OFF)
option(SYSTEM_UDNS "Set to ON to build SimGear using the system udns library" OFF)
else()
# Building SimGear DLLs is currently not supported for MSVC.
set(SIMGEAR_SHARED OFF)
# Using external 3rd party libraries is currently not supported for MSVC - it would require shared simgear (DLL).
set(SYSTEM_EXPAT OFF)
set(SYSTEM_UDNS OFF)
endif()
option(SIMGEAR_HEADLESS "Set to ON to build SimGear without GUI/graphics support" OFF)
option(ENABLE_CYCLONE "Set to ON to build SimGear with Cyclone Data Distribution Service support" ON)
option(ENABLE_RTI "Set to ON to build SimGear with RTI support" OFF)
option(ENABLE_GDAL "Set to ON to build SimGear with GDAL support" OFF)
option(ENABLE_TESTS "Set to OFF to disable building SimGear's test applications" ON)
option(ENABLE_SOUND "Set to OFF to disable building SimGear's sound support" ON)
option(USE_AEONWAVE "Set to ON to use AeonWave instead of OpenAL" ON)
option(ENABLE_PKGUTIL "Set to ON to build the sg_pkgutil application (default)" ON)
option(ENABLE_SIMD "Enable SSE/SSE2 support for compilers" ON)
option(ENABLE_SIMD_CODE "Enable SSE/SSE2 support code for compilers" OFF)
option(ENABLE_ASAN "Set to ON to build SimGear with LLVM AddressSanitizer (ASan) support" OFF)
if (NOT ENABLE_SIMD AND ENABLE_SIMD_CODE)
set(ENABLE_SIMD_CODE OFF)
endif()
include (DetectArch)
include (ExportDebugSymbols)
# until the fstream fix is applied and generally available in OSG,
# keep the compatability link option as the default
option(OSG_FSTREAM_EXPORT_FIXED "Set to ON if the osgDB fstream export patch is applied" OFF)
if (MSVC)
# override CMake default RelWithDebInfo flags. This is important to ensure
# good performance
set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "/Zi /O2 /Ob2 /D NDEBUG")
set(CMAKE_C_FLAGS_RELWITHDEBINFO "/Zi /O2 /Ob2 /D NDEBUG")
endif ()
# Setup MSVC 3rd party directories
include( ConfigureMsvc3rdParty )
if(APPLE)
find_library(COCOA_LIBRARY Cocoa)
endif()
find_package(Threads REQUIRED)
find_package(Boost REQUIRED)
set (BOOST_CXX_FLAGS "-DBOOST_BIMAP_DISABLE_SERIALIZATION -DBOOST_NO_STDLIB_CONFIG -DBOOST_NO_AUTO_PTR -DBOOST_NO_CXX98_BINDERS")
include(BoostTestTargets)
if(SIMGEAR_HEADLESS)
message(STATUS "SimGear mode: HEADLESS")
set(ENABLE_SOUND 0)
else()
message(STATUS "SimGear mode: NORMAL")
find_package(OpenGL REQUIRED)
if (ENABLE_SOUND)
if (USE_AEONWAVE)
find_package(AAX)
endif()
if(NOT AAX_FOUND)
set(USE_AEONWAVE FALSE)
find_package(OpenAL REQUIRED)
endif()
if(AAX_FOUND)
message(STATUS "Sound support: AeonWave")
else()
message(STATUS "Sound support: OpenAL")
endif()
endif(ENABLE_SOUND)
find_package(OpenSceneGraph 3.4.1 REQUIRED osgText osgSim osgDB osgParticle osgGA osgViewer osgUtil osgTerrain)
if (MSVC)
set(CMAKE_REQUIRED_INCLUDES ${OPENSCENEGRAPH_INCLUDE_DIRS})
# ensure OSG was compiled with OSG_USE_UTF8_FILENAME set
check_cxx_source_compiles(
"#include <osg/Config>
#if !defined(OSG_USE_UTF8_FILENAME)
#error OSG UTF8 support not enabled
#endif
int main() { return 0; }"
SIMGEAR_OSG_USE_UTF8_FILENAME)
if (NOT SIMGEAR_OSG_USE_UTF8_FILENAME)
message(FATAL_ERROR "Please rebuild OSG with OSG_USE_UTF8_FILENAME set to ON")
endif()
endif()
endif(SIMGEAR_HEADLESS)
if(${CMAKE_SYSTEM_NAME} MATCHES "OpenBSD")
# As of 2020-08-01, OpenBSD's system zlib is slightly old, but it's usable
# with a workaround in simgear/io/iostreams/gzfstream.cxx.
find_package(ZLIB 1.2.3 REQUIRED)
else()
find_package(ZLIB 1.2.4 REQUIRED)
endif()
find_package(LibLZMA REQUIRED)
find_package(CURL REQUIRED)
if (SYSTEM_EXPAT)
message(STATUS "Requested to use system Expat library, forcing SIMGEAR_SHARED to true")
set(SIMGEAR_SHARED ON)
find_package(EXPAT REQUIRED)
else()
message(STATUS "Using built-in expat code")
endif(SYSTEM_EXPAT)
if(ENABLE_RTI)
find_package(PkgConfig)
if(PKG_CONFIG_FOUND)
SET(ENV{PKG_CONFIG_PATH} "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}/pkgconfig:$ENV{PKG_CONFIG_PATH}")
pkg_check_modules(RTI IMPORTED_TARGET hla-rti13)
endif(PKG_CONFIG_FOUND)
if(RTI_FOUND)
message(STATUS "RTI: ENABLED")
else()
message(STATUS "RTI: DISABLED")
endif(RTI_FOUND)
else()
message(STATUS "RTI: DISABLED")
endif(ENABLE_RTI)
if(ENABLE_CYCLONE)
if (NOT TARGET CycloneDDS::ddsc)
find_package(CycloneDDS QUIET)
endif()
if (CycloneDDS_FOUND)
message(STATUS "Data Distribution Service support: CycloneDDS")
else(CycloneDDS_FOUND)
message(STATUS "Data Distribution Service support: DISBLED")
endif(CycloneDDS_FOUND)
endif(ENABLE_CYCLONE)
if(ENABLE_GDAL)
find_package(GDAL 2.0.0 REQUIRED)
endif(ENABLE_GDAL)
include(CheckPOSIXFeatures)
SET(CMAKE_DEBUG_POSTFIX "d" CACHE STRING "add a postfix, usually 'd' on windows")
SET(CMAKE_RELEASE_POSTFIX "" CACHE STRING "add a postfix, usually empty on windows")
SET(CMAKE_RELWITHDEBINFO_POSTFIX "" CACHE STRING "add a postfix, usually empty on windows")
SET(CMAKE_MINSIZEREL_POSTFIX "" CACHE STRING "add a postfix, usually empty on windows")
# Check if the <regex> implementation in the C++ standard library is usable.
# This is necessary because g++ 4.8 lies about its C++11 compliance: its
# <regex> is utterly unusable, cf. [1].
# The big preprocessor test essentially comes from [2], and gcc upstream devs
# appear to back it (see comments following [2], as well as [3]).
#
# [1] https://stackoverflow.com/a/12665408/4756009
# [2] https://stackoverflow.com/a/41186162/4756009
# [3] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78905
check_cxx_source_compiles(
"#include <regex>
int main() {
#if __cplusplus >= 201103L && \
(!defined(__GLIBCXX__) || \
(__cplusplus >= 201402L) || \
defined(_GLIBCXX_REGEX_DFS_QUANTIFIERS_LIMIT) || \
defined(_GLIBCXX_REGEX_STATE_LIMIT) || \
(defined(_GLIBCXX_RELEASE) && _GLIBCXX_RELEASE > 4))
#else
nullptr = void; // intentionally trigger a compilation error
#endif
}"
HAVE_WORKING_STD_REGEX)
if(CMAKE_COMPILER_IS_GNUCXX)
set(WARNING_FLAGS_CXX "-Wall -fPIC")
set(WARNING_FLAGS_C "-Wall -fPIC")
if (X86 OR X86_64)
set(SIMD_COMPILER_FLAGS "-msse2 -mfpmath=sse -ftree-vectorize -ftree-slp-vectorize")
endif()
# certain GCC versions don't provide the atomic builds, and hence
# require is to provide them in SGAtomic.cxx
set(CMAKE_REQUIRED_INCLUDES ${CMAKE_INCLUDE_PATH})
check_cxx_source_compiles(
"int main() { unsigned mValue; return __sync_add_and_fetch(&mValue, 1); }"
GCC_ATOMIC_BUILTINS_FOUND)
set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O3 -g -DNDEBUG")
set(CMAKE_C_FLAGS_RELWITHDEBINFO "-O3 -g -DNDEBUG")
endif(CMAKE_COMPILER_IS_GNUCXX)
if (CLANG)
# Boost redeclares class members
set(WARNING_FLAGS_CXX "-Wall -fPIC -Wno-overloaded-virtual -Wno-redeclared-class-member")
set(WARNING_FLAGS_C "-Wall -fPIC")
set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LIBRARY "libc++")
# fix Boost compilation :(
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
# override CMake default RelWithDebInfo flags.
set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O3 -g -DNDEBUG")
set(CMAKE_C_FLAGS_RELWITHDEBINFO "-O3 -g -DNDEBUG")
set(SIMD_COMPILER_FLAGS "-msse2 -mfpmath=sse -ftree-vectorize -ftree-slp-vectorize")
endif()
if (ENABLE_ASAN)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=address")
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -fsanitize=address")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address")
# needed for check_cxx_source_compiles
set(CMAKE_REQUIRED_LINK_OPTIONS "-fsanitize=address")
endif()
if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
# boost goes haywire wrt static asserts
check_cxx_compiler_flag(-Wno-unused-local-typedefs HAS_NOWARN_UNUSED_TYPEDEFS)
if(HAS_NOWARN_UNUSED_TYPEDEFS)
set(WARNING_FLAGS_CXX " ${WARNING_FLAGS_CXX} -Wno-unused-local-typedefs")
endif()
endif()
if(WIN32)
if(MINGW)
add_definitions(-D_WIN32_WINNT=0x501)
endif()
if(MSVC)
set(MSVC_FLAGS "-D_HAS_STD_BYTE=0 -DWIN32 -DNOMINMAX -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D__CRT_NONSTDC_NO_WARNINGS /MP /bigobj")
if (X86)
set(SIMD_COMPILER_FLAGS "/arch:SSE /arch:SSE2")
endif()
if (NOT OSG_FSTREAM_EXPORT_FIXED)
message(STATUS "For better linking performance, use OSG with patched fstream header")
# needed to avoid link errors on multiply-defined standard C++
# symbols. Suspect this may be an OSG-DB export bug
set( MSVC_LD_FLAGS "/FORCE:MULTIPLE" )
endif ()
endif(MSVC)
# assumed on Windows
set(HAVE_GETLOCALTIME 1)
set( WINSOCK_LIBRARY "ws2_32.lib" )
set( SHLWAPI_LIBRARY "Shlwapi.lib" )
set( RT_LIBRARY "winmm" )
endif(WIN32)
# append the SIMD flags if requested
if (ENABLE_SIMD)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${SIMD_COMPILER_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${SIMD_COMPILER_FLAGS}")
# set for multi-configuration generators
set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} ${SIMD_COMPILER_FLAGS}")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} ${SIMD_COMPILER_FLAGS}")
set(CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO} ${SIMD_COMPILER_FLAGS}")
set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} ${SIMD_COMPILER_FLAGS}")
endif()
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${WARNING_FLAGS_C} ${MSVC_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${WARNING_FLAGS_CXX} ${MSVC_FLAGS} ${BOOST_CXX_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${MSVC_LD_FLAGS}")
include(CheckCXXFeatures)
add_definitions(-DHAVE_CONFIG_H)
# configure a header file to pass some of the CMake settings
# to the source code
configure_file (
"${PROJECT_SOURCE_DIR}/simgear/simgear_config_cmake.h.in"
"${PROJECT_BINARY_DIR}/simgear/simgear_config.h"
)
include (Dart)
enable_testing()
include(AddSimGearTest) # helper to setup a test
install (FILES ${PROJECT_BINARY_DIR}/simgear/simgear_config.h DESTINATION include/simgear/)
if(SYSTEM_UDNS)
message(STATUS "Requested to use system udns library, forcing SIMGEAR_SHARED to true")
set(SIMGEAR_SHARED ON)
find_package(Udns REQUIRED)
endif()
add_subdirectory(3rdparty)
add_subdirectory(simgear)
#-----------------------------------------------------------------------------
### Export stuff, see https://cmake.org/cmake/help/v3.2/manual/cmake-packages.7.html#creating-packages
#-----------------------------------------------------------------------------
generate_export_header(SimGearCore)
if(NOT SIMGEAR_HEADLESS)
generate_export_header(SimGearScene)
endif()
include(CMakePackageConfigHelpers)
write_basic_package_version_file(
"${CMAKE_CURRENT_BINARY_DIR}/SimGear/SimGearConfigVersion.cmake"
VERSION ${SIMGEAR_VERSION}
COMPATIBILITY AnyNewerVersion
)
configure_file(SimGearConfig.cmake.in
"${CMAKE_CURRENT_BINARY_DIR}/SimGear/SimGearConfig.cmake"
@ONLY
)
set(ConfigPackageLocation ${CMAKE_INSTALL_LIBDIR}/cmake/SimGear)
install(EXPORT SimGearTargets
DESTINATION ${ConfigPackageLocation}
)
install(
FILES
"${CMAKE_CURRENT_BINARY_DIR}/SimGear/SimGearConfig.cmake"
"${CMAKE_CURRENT_BINARY_DIR}/SimGear/SimGearConfigVersion.cmake"
DESTINATION ${ConfigPackageLocation}
COMPONENT Devel
)
#-----------------------------------------------------------------------------
### uninstall target
#-----------------------------------------------------------------------------
CONFIGURE_FILE(
"${CMAKE_CURRENT_SOURCE_DIR}/CMakeModules/cmake_uninstall.cmake.in"
"${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
IMMEDIATE @ONLY)
ADD_CUSTOM_TARGET(uninstall
"${CMAKE_COMMAND}" -P "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake")
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