thodg/libgit2/CMakeLists.txt

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• Hash : c951b825
  Author :
  Date : 2019-01-23T00:32:40
  

  deprecation: define GIT_DEPRECATE_HARD internally Ensure that we do not use any deprecated functions in the library source, test code or examples.

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• CMakeLists.txt

• # CMake build script for the libgit2 project
  #
  # Building (out of source build):
  # > mkdir build && cd build
  # > cmake .. [-DSETTINGS=VALUE]
  # > cmake --build .
  #
  # Testing:
  # > ctest -V
  #
  # Install:
  # > cmake --build . --target install
  
  PROJECT(libgit2 C)
  CMAKE_MINIMUM_REQUIRED(VERSION 2.8.11)
  CMAKE_POLICY(SET CMP0015 NEW)
  IF(POLICY CMP0051)
  	CMAKE_POLICY(SET CMP0051 NEW)
  ENDIF()
  IF(POLICY CMP0042)
  	CMAKE_POLICY(SET CMP0042 NEW)
  ENDIF()
  IF(POLICY CMP0054)
  	CMAKE_POLICY(SET CMP0054 NEW)
  ENDIF()
  
  # Add find modules to the path
  SET(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${libgit2_SOURCE_DIR}/cmake/Modules/")
  
  INCLUDE(CheckLibraryExists)
  INCLUDE(CheckFunctionExists)
  INCLUDE(CheckSymbolExists)
  INCLUDE(CheckStructHasMember)
  INCLUDE(CheckPrototypeDefinition) # Added in CMake 3.0
  INCLUDE(AddCFlagIfSupported)
  INCLUDE(FindPkgLibraries)
  INCLUDE(FindThreads)
  INCLUDE(FindStatNsec)
  INCLUDE(IdeSplitSources)
  INCLUDE(FeatureSummary)
  INCLUDE(EnableWarnings)
  
  # Build options
  #
  OPTION(SONAME				"Set the (SO)VERSION of the target"			 ON)
  OPTION(BUILD_SHARED_LIBS		"Build Shared Library (OFF for Static)"			 ON)
  OPTION(THREADSAFE			"Build libgit2 as threadsafe"				 ON)
  OPTION(BUILD_CLAR			"Build Tests using the Clar suite"			 ON)
  OPTION(BUILD_EXAMPLES			"Build library usage example apps"			OFF)
  OPTION(BUILD_FUZZERS			"Build the fuzz targets"				OFF)
  OPTION(TAGS				"Generate tags"						OFF)
  OPTION(PROFILE				"Generate profiling information"			OFF)
  OPTION(ENABLE_TRACE			"Enables tracing support"				OFF)
  OPTION(LIBGIT2_FILENAME			"Name of the produced binary"				OFF)
  
     SET(SHA1_BACKEND 			"CollisionDetection"			       CACHE STRING
         "Backend to use for SHA1. One of Generic, OpenSSL, Win32, CommonCrypto, mbedTLS, CollisionDetection.")
  OPTION(USE_SSH				"Link with libssh2 to enable SSH support"		 ON)
  OPTION(USE_HTTPS			"Enable HTTPS support. Can be set to a specific backend" ON)
  OPTION(USE_GSSAPI			"Link with libgssapi for SPNEGO auth"			OFF)
  OPTION(USE_STANDALONE_FUZZERS		"Enable standalone fuzzers (compatible with gcc)"	OFF)
  OPTION(VALGRIND				"Configure build for valgrind"				OFF)
  OPTION(USE_EXT_HTTP_PARSER		"Use system HTTP_Parser if available"			 ON)
  OPTION(DEBUG_POOL			"Enable debug pool allocator"				OFF)
  OPTION(ENABLE_WERROR			"Enable compilation with -Werror"			OFF)
  OPTION(USE_BUNDLED_ZLIB    		"Use the bundled version of zlib"			OFF)
  
  IF (UNIX AND NOT APPLE)
  	OPTION(ENABLE_REPRODUCIBLE_BUILDS "Enable reproducible builds"				OFF)
  ENDIF()
  
  IF (APPLE)
  	OPTION(USE_ICONV		"Link with and use iconv library"			 ON)
  ENDIF()
  
  IF(MSVC)
  	# This option must match the settings used in your program, in particular if you
  	# are linking statically
  	OPTION(STATIC_CRT		"Link the static CRT libraries"		 		 ON)
  
  	# If you want to embed a copy of libssh2 into libgit2, pass a
  	# path to libssh2
  	OPTION(EMBED_SSH_PATH		"Path to libssh2 to embed (Windows)"			OFF)
  ENDIF()
  
  
  IF(WIN32)
  	# By default, libgit2 is built with WinHTTP.  To use the built-in
  	# HTTP transport, invoke CMake with the "-DWINHTTP=OFF" argument.
  	OPTION(WINHTTP			"Use Win32 WinHTTP routines"				 ON)
  ENDIF()
  
  IF(MSVC)
  	# Enable MSVC CRTDBG memory leak reporting when in debug mode.
  	OPTION(MSVC_CRTDBG 		"Enable CRTDBG memory leak reporting"			OFF)
  ENDIF()
  
  FILE(STRINGS "${libgit2_SOURCE_DIR}/include/git2/version.h" GIT2_HEADER REGEX "^#define LIBGIT2_VERSION \"[^\"]*\"$")
  
  STRING(REGEX REPLACE "^.*LIBGIT2_VERSION \"([0-9]+).*$" "\\1" LIBGIT2_VERSION_MAJOR "${GIT2_HEADER}")
  STRING(REGEX REPLACE "^.*LIBGIT2_VERSION \"[0-9]+\\.([0-9]+).*$" "\\1" LIBGIT2_VERSION_MINOR  "${GIT2_HEADER}")
  STRING(REGEX REPLACE "^.*LIBGIT2_VERSION \"[0-9]+\\.[0-9]+\\.([0-9]+).*$" "\\1" LIBGIT2_VERSION_REV "${GIT2_HEADER}")
  SET(LIBGIT2_VERSION_STRING "${LIBGIT2_VERSION_MAJOR}.${LIBGIT2_VERSION_MINOR}.${LIBGIT2_VERSION_REV}")
  
  FILE(STRINGS "${libgit2_SOURCE_DIR}/include/git2/version.h" GIT2_HEADER_SOVERSION REGEX "^#define LIBGIT2_SOVERSION [0-9]+$")
  STRING(REGEX REPLACE "^.*LIBGIT2_SOVERSION ([0-9]+)$" "\\1" LIBGIT2_SOVERSION "${GIT2_HEADER_SOVERSION}")
  
  # Ensure that we do not use deprecated functions internally
  ADD_DEFINITIONS(-DGIT_DEPRECATE_HARD)
  
  # Platform specific compilation flags
  IF (MSVC)
  	IF (STDCALL)
  		MESSAGE(FATAL_ERROR "The STDCALL option is no longer supported; libgit2 is now always built as a cdecl library.  If you're using PInvoke, please add the CallingConventions.Cdecl attribute for support.")
  	ENDIF()
  
  	ADD_DEFINITIONS(-D_SCL_SECURE_NO_WARNINGS)
  	ADD_DEFINITIONS(-D_CRT_SECURE_NO_DEPRECATE)
  	ADD_DEFINITIONS(-D_CRT_NONSTDC_NO_DEPRECATE)
  
  	STRING(REPLACE "/Zm1000" " " CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
  
  	# /GF - String pooling
  	# /MP - Parallel build
  	SET(CMAKE_C_FLAGS "/GF /MP /nologo ${CMAKE_C_FLAGS}")
  
  	# /Gd - explicitly set cdecl calling convention
  	SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /Gd")
  
  	IF (STATIC_CRT)
  		SET(CRT_FLAG_DEBUG "/MTd")
  		SET(CRT_FLAG_RELEASE "/MT")
  	ELSE()
  		SET(CRT_FLAG_DEBUG "/MDd")
  		SET(CRT_FLAG_RELEASE "/MD")
  	ENDIF()
  
  	IF (MSVC_CRTDBG)
  		SET(GIT_MSVC_CRTDBG 1)
  		SET(CRT_FLAG_DEBUG "${CRT_FLAG_DEBUG}")
  		SET(CMAKE_C_STANDARD_LIBRARIES "${CMAKE_C_STANDARD_LIBRARIES} Dbghelp.lib")
  	ENDIF()
  
  	# /Zi - Create debugging information
  	# /Od - Disable optimization
  	# /D_DEBUG - #define _DEBUG
  	# /MTd - Statically link the multithreaded debug version of the CRT
  	# /MDd - Dynamically link the multithreaded debug version of the CRT
  	# /RTC1 - Run time checks
  	SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /Zi /Od /D_DEBUG /RTC1 ${CRT_FLAG_DEBUG}")
  
  	# /DNDEBUG - Disables asserts
  	# /MT - Statically link the multithreaded release version of the CRT
  	# /MD - Dynamically link the multithreaded release version of the CRT
  	# /O2 - Optimize for speed
  	# /Oy - Enable frame pointer omission (FPO) (otherwise CMake will automatically turn it off)
  	# /GL - Link time code generation (whole program optimization)
  	# /Gy - Function-level linking
  	SET(CMAKE_C_FLAGS_RELEASE "/DNDEBUG /O2 /Oy /GL /Gy ${CRT_FLAG_RELEASE}")
  
  	# /Oy- - Disable frame pointer omission (FPO)
  	SET(CMAKE_C_FLAGS_RELWITHDEBINFO "/DNDEBUG /Zi /O2 /Oy- /GL /Gy ${CRT_FLAG_RELEASE}")
  
  	# /O1 - Optimize for size
  	SET(CMAKE_C_FLAGS_MINSIZEREL "/DNDEBUG /O1 /Oy /GL /Gy ${CRT_FLAG_RELEASE}")
  
  	# /DYNAMICBASE - Address space load randomization (ASLR)
  	# /NXCOMPAT - Data execution prevention (DEP)
  	# /LARGEADDRESSAWARE - >2GB user address space on x86
  	# /VERSION - Embed version information in PE header
  	SET(CMAKE_EXE_LINKER_FLAGS "/DYNAMICBASE /NXCOMPAT /LARGEADDRESSAWARE /VERSION:${LIBGIT2_VERSION_MAJOR}.${LIBGIT2_VERSION_MINOR}")
  
  	# /DEBUG - Create a PDB
  	# /LTCG - Link time code generation (whole program optimization)
  	# /OPT:REF /OPT:ICF - Fold out duplicate code at link step
  	# /INCREMENTAL:NO - Required to use /LTCG
  	# /DEBUGTYPE:cv,fixup - Additional data embedded in the PDB (requires /INCREMENTAL:NO, so not on for Debug)
  	SET(CMAKE_EXE_LINKER_FLAGS_DEBUG "/DEBUG")
  	SET(CMAKE_EXE_LINKER_FLAGS_RELEASE "/RELEASE /LTCG /OPT:REF /OPT:ICF /INCREMENTAL:NO")
  	SET(CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO "/DEBUG /RELEASE /LTCG /OPT:REF /OPT:ICF /INCREMENTAL:NO /DEBUGTYPE:cv,fixup")
  	SET(CMAKE_EXE_LINKER_FLAGS_MINSIZEREL "/RELEASE /LTCG /OPT:REF /OPT:ICF /INCREMENTAL:NO")
  
  	# Same linker settings for DLL as EXE
  	SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}")
  	SET(CMAKE_SHARED_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG}")
  	SET(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE}")
  	SET(CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO}")
  	SET(CMAKE_SHARED_LINKER_FLAGS_MINSIZEREL "${CMAKE_EXE_LINKER_FLAGS_MINSIZEREL}")
  ELSE ()
  	IF (ENABLE_REPRODUCIBLE_BUILDS)
  		SET(CMAKE_C_ARCHIVE_CREATE "<CMAKE_AR> Dqc <TARGET> <LINK_FLAGS> <OBJECTS>")
  		SET(CMAKE_C_ARCHIVE_APPEND "<CMAKE_AR> Dq  <TARGET> <LINK_FLAGS> <OBJECTS>")
  		SET(CMAKE_C_ARCHIVE_FINISH "<CMAKE_RANLIB> -D <TARGET>")
  	ENDIF()
  
  	SET(CMAKE_C_FLAGS "-D_GNU_SOURCE ${CMAKE_C_FLAGS}")
  
  	ENABLE_WARNINGS(all)
  	ENABLE_WARNINGS(extra)
  
  	IF (CMAKE_SYSTEM_NAME MATCHES "(Solaris|SunOS)")
  		SET(CMAKE_C_FLAGS "-D_POSIX_C_SOURCE=200112L -D__EXTENSIONS__ -D_POSIX_PTHREAD_SEMANTICS ${CMAKE_C_FLAGS}")
  	ENDIF()
  
  	SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -D_DEBUG -O0")
  
  	IF (MINGW OR MSYS) # MinGW and MSYS always do PIC and complain if we tell them to
  		STRING(REGEX REPLACE "-fPIC" "" CMAKE_SHARED_LIBRARY_C_FLAGS "${CMAKE_SHARED_LIBRARY_C_FLAGS}")
  	ELSEIF (BUILD_SHARED_LIBS)
  		ADD_C_FLAG_IF_SUPPORTED(-fvisibility=hidden)
  
  		SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC")
  	ENDIF ()
  
  	IF (MINGW)
  		# MinGW >= 3.14 uses the C99-style stdio functions
  		# automatically, but forks like mingw-w64 still want
  		# us to define this in order to use them
  		ADD_DEFINITIONS(-D__USE_MINGW_ANSI_STDIO=1)
  	ENDIF ()
  
  	ENABLE_WARNINGS(documentation)
  	DISABLE_WARNINGS(missing-field-initializers)
  	ENABLE_WARNINGS(strict-aliasing)
  	ENABLE_WARNINGS(strict-prototypes)
  	ENABLE_WARNINGS(declaration-after-statement)
  	ENABLE_WARNINGS(shift-count-overflow)
  	ENABLE_WARNINGS(unused-const-variable)
  	ENABLE_WARNINGS(unused-function)
  	ENABLE_WARNINGS(format)
  	ENABLE_WARNINGS(format-security)
  	ENABLE_WARNINGS(int-conversion)
  	DISABLE_WARNINGS(documentation-deprecated-sync)
  
  	IF (PROFILE)
  		SET(CMAKE_C_FLAGS "-pg ${CMAKE_C_FLAGS}")
  		SET(CMAKE_EXE_LINKER_FLAGS "-pg ${CMAKE_EXE_LINKER_FLAGS}")
  	ENDIF ()
  ENDIF()
  
  IF( NOT CMAKE_CONFIGURATION_TYPES )
  	# Build Debug by default
  	IF (NOT CMAKE_BUILD_TYPE)
  		SET(CMAKE_BUILD_TYPE "Debug" CACHE STRING "Choose the type of build, options are: Debug Release RelWithDebInfo MinSizeRel." FORCE)
  	ENDIF ()
  ELSE()
  	# Using a multi-configuration generator eg MSVC or Xcode
  	# that uses CMAKE_CONFIGURATION_TYPES and not CMAKE_BUILD_TYPE
  ENDIF()
  
  IF(BUILD_FUZZERS AND NOT USE_STANDALONE_FUZZERS)
  	# The actual sanitizer link target will be added when linking the fuzz
  	# targets.
  	SET(CMAKE_REQUIRED_FLAGS "-fsanitize=fuzzer-no-link")
  	ADD_C_FLAG(-fsanitize=fuzzer-no-link)
  	UNSET(CMAKE_REQUIRED_FLAGS)
  ENDIF ()
  
  ADD_SUBDIRECTORY(src)
  
  # Tests
  IF (NOT MSVC)
     IF (NOT BUILD_SHARED_LIBS)
         SET(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
     ENDIF()
  ENDIF ()
  
  IF (BUILD_CLAR)
  	ENABLE_TESTING()
  	ADD_SUBDIRECTORY(tests)
  ENDIF ()
  
  IF (TAGS)
  	FIND_PROGRAM(CTAGS ctags)
  	IF (NOT CTAGS)
  		MESSAGE(FATAL_ERROR "Could not find ctags command")
  	ENDIF ()
  
  	FILE(GLOB_RECURSE SRC_ALL *.[ch])
  
  	ADD_CUSTOM_COMMAND(
  		OUTPUT tags
  		COMMAND ${CTAGS} -a ${SRC_ALL}
  		DEPENDS ${SRC_ALL}
  	)
  	ADD_CUSTOM_TARGET(
  		do_tags ALL
  		DEPENDS tags
  	)
  ENDIF ()
  
  IF (BUILD_EXAMPLES)
  	ADD_SUBDIRECTORY(examples)
  ENDIF ()
  
  IF(BUILD_FUZZERS)
  	IF(NOT USE_STANDALONE_FUZZERS)
  		IF(BUILD_EXAMPLES)
  			MESSAGE(FATAL_ERROR "Cannot build the fuzzer targets and the examples together")
  		ENDIF()
  		IF(BUILD_CLAR)
  			MESSAGE(FATAL_ERROR "Cannot build the fuzzer targets and the tests together")
  		ENDIF()
  	ENDIF()
  	ADD_SUBDIRECTORY(fuzzers)
  ENDIF()
  
  IF(CMAKE_VERSION VERSION_GREATER 3)
  	FEATURE_SUMMARY(WHAT ENABLED_FEATURES DESCRIPTION "Enabled features:")
  	FEATURE_SUMMARY(WHAT DISABLED_FEATURES DESCRIPTION "Disabled features:")
  ELSE()
  	PRINT_ENABLED_FEATURES()
  	PRINT_DISABLED_FEATURES()
  ENDIF()
  

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