# 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)

CMAKE_POLICY(SET CMP0015 NEW)

# Add find modules to the path

SET(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules/")

INCLUDE(CheckLibraryExists)

INCLUDE(CheckFunctionExists)

INCLUDE(CheckSymbolExists)

INCLUDE(CheckStructHasMember)

INCLUDE(AddCFlagIfSupported)

INCLUDE(FindPkgConfig)

# 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( 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 )

OPTION( USE_SHA1DC			"Use SHA-1 with collision detection"	OFF )

OPTION( USE_ICONV			"Link with and use iconv library" 		OFF )

OPTION( USE_SSH				"Link with libssh to enable SSH support" ON )

OPTION( USE_GSSAPI			"Link with libgssapi for SPNEGO auth"   OFF )

OPTION( VALGRIND			"Configure build for valgrind"			OFF )

OPTION( CURL			"Use curl for HTTP if available" ON)

OPTION( DEBUG_POOL			"Enable debug pool allocator"			OFF )

IF(DEBUG_POOL)

	ADD_DEFINITIONS(-DGIT_DEBUG_POOL)

ENDIF()

IF(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")

	SET( USE_ICONV ON )

	FIND_PACKAGE(Security)

	FIND_PACKAGE(CoreFoundation REQUIRED)

ENDIF()

IF(MSVC)

	# This option is only available when building with MSVC. By default, libgit2

	# is build using the cdecl calling convention, which is useful if you're

	# writing C. However, the CLR and Win32 API both expect stdcall.

	#

	# If you are writing a CLR program and want to link to libgit2, you'll want

	# to turn this on by invoking CMake with the "-DSTDCALL=ON" argument.

	OPTION( STDCALL			"Build libgit2 with the __stdcall convention"	OFF  )

	# 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 )

	ADD_DEFINITIONS(-D_SCL_SECURE_NO_WARNINGS)

	ADD_DEFINITIONS(-D_CRT_SECURE_NO_DEPRECATE)

	ADD_DEFINITIONS(-D_CRT_NONSTDC_NO_DEPRECATE)

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()

IF (NOT ${CMAKE_SYSTEM_NAME} MATCHES "Darwin")

	OPTION( USE_OPENSSL                     "Link with and use openssl library"             ON )

ENDIF()

CHECK_STRUCT_HAS_MEMBER ("struct stat" st_mtim "sys/types.h;sys/stat.h"

	HAVE_STRUCT_STAT_ST_MTIM LANGUAGE C)

CHECK_STRUCT_HAS_MEMBER ("struct stat" st_mtimespec "sys/types.h;sys/stat.h"

	HAVE_STRUCT_STAT_ST_MTIMESPEC LANGUAGE C)

CHECK_STRUCT_HAS_MEMBER("struct stat" st_mtime_nsec sys/stat.h

	HAVE_STRUCT_STAT_MTIME_NSEC LANGUAGE C)

IF (HAVE_STRUCT_STAT_ST_MTIM)

	CHECK_STRUCT_HAS_MEMBER("struct stat" st_mtim.tv_nsec sys/stat.h

		HAVE_STRUCT_STAT_NSEC LANGUAGE C)

ELSEIF (HAVE_STRUCT_STAT_ST_MTIMESPEC)

	CHECK_STRUCT_HAS_MEMBER("struct stat" st_mtimespec.tv_nsec sys/stat.h

		HAVE_STRUCT_STAT_NSEC LANGUAGE C)

ELSE ()

	SET( HAVE_STRUCT_STAT_NSEC ON )

ENDIF()

IF (HAVE_STRUCT_STAT_NSEC OR WIN32)

	OPTION( USE_NSEC		"Care about sub-second file mtimes and ctimes"	ON  )

ENDIF()

# This variable will contain the libraries we need to put into

# libgit2.pc's Requires.private. That is, what we're linking to or

# what someone who's statically linking us needs to link to.

SET(LIBGIT2_PC_REQUIRES "")

# This will be set later if we use the system's http-parser library or

# use iconv (OSX) and will be written to the Libs.private field in the

# pc file.

SET(LIBGIT2_PC_LIBS "")

# Installation paths

#

SET(BIN_INSTALL_DIR bin CACHE PATH "Where to install binaries to.")

SET(LIB_INSTALL_DIR lib CACHE PATH "Where to install libraries to.")

SET(INCLUDE_INSTALL_DIR include CACHE PATH "Where to install headers to.")

# Set a couple variables to be substituted inside the .pc file.

# We can't just use LIB_INSTALL_DIR in the .pc file, as passing them as absolue

# or relative paths is both valid and supported by cmake.

SET (PKGCONFIG_PREFIX ${CMAKE_INSTALL_PREFIX})

IF(IS_ABSOLUTE ${LIB_INSTALL_DIR})

  SET (PKGCONFIG_LIBDIR ${LIB_INSTALL_DIR})

ELSE(IS_ABSOLUTE ${LIB_INSTALL_DIR})

  SET (PKGCONFIG_LIBDIR "\${prefix}/${LIB_INSTALL_DIR}")

ENDIF (IS_ABSOLUTE ${LIB_INSTALL_DIR})

IF(IS_ABSOLUTE ${INCLUDE_INSTALL_DIR})

  SET (PKGCONFIG_INCLUDEDIR ${INCLUDE_INSTALL_DIR})

ELSE(IS_ABSOLUTE ${INCLUDE_INSTALL_DIR})

  SET (PKGCONFIG_INCLUDEDIR "\${prefix}/${INCLUDE_INSTALL_DIR}")

ENDIF(IS_ABSOLUTE ${INCLUDE_INSTALL_DIR})

FUNCTION(TARGET_OS_LIBRARIES target)

	IF(WIN32)

		TARGET_LINK_LIBRARIES(${target} ws2_32)

	ELSEIF(CMAKE_SYSTEM_NAME MATCHES "(Solaris|SunOS)")

		TARGET_LINK_LIBRARIES(${target} socket nsl)

		LIST(APPEND LIBGIT2_PC_LIBS "-lsocket" "-lnsl")

		SET(LIBGIT2_PC_LIBS ${LIBGIT2_PC_LIBS} PARENT_SCOPE)

	ELSEIF(CMAKE_SYSTEM_NAME MATCHES "Haiku")

		TARGET_LINK_LIBRARIES(${target} network)

		LIST(APPEND LIBGIT2_PC_LIBS "-lnetwork")

		SET(LIBGIT2_PC_LIBS ${LIBGIT2_PC_LIBS} PARENT_SCOPE)

	ENDIF()

	CHECK_LIBRARY_EXISTS(rt clock_gettime "time.h" NEED_LIBRT)

	IF(NEED_LIBRT)

		TARGET_LINK_LIBRARIES(${target} rt)

		LIST(APPEND LIBGIT2_PC_LIBS "-lrt")

		SET(LIBGIT2_PC_LIBS ${LIBGIT2_PC_LIBS} PARENT_SCOPE)

	ENDIF()

	IF(THREADSAFE)

		TARGET_LINK_LIBRARIES(${target} ${CMAKE_THREAD_LIBS_INIT})

		LIST(APPEND LIBGIT2_PC_LIBS ${CMAKE_THREAD_LIBS_INIT})

		SET(LIBGIT2_PC_LIBS ${LIBGIT2_PC_LIBS} PARENT_SCOPE)

	ENDIF()

ENDFUNCTION()

# This function splits the sources files up into their appropriate

# subdirectories.  This is especially useful for IDEs like Xcode and

# Visual Studio, so that you can navigate into the libgit2_clar project,

# and see the folders within the tests folder (instead of just seeing all

# source and tests in a single folder.)

FUNCTION(IDE_SPLIT_SOURCES target)

	IF(MSVC_IDE OR CMAKE_GENERATOR STREQUAL Xcode)

		GET_TARGET_PROPERTY(sources ${target} SOURCES)

		FOREACH(source ${sources})

			IF(source MATCHES ".*/")

				STRING(REPLACE ${CMAKE_CURRENT_SOURCE_DIR}/ "" rel ${source})

				IF(rel)

					STRING(REGEX REPLACE "/([^/]*)$" "" rel ${rel})

					IF(rel)

						STRING(REPLACE "/" "\\\\" rel ${rel})

						SOURCE_GROUP(${rel} FILES ${source})

					ENDIF()

				ENDIF()

			ENDIF()

		ENDFOREACH()

	ENDIF()

ENDFUNCTION()

FILE(STRINGS "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 "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}")

# Find required dependencies

INCLUDE_DIRECTORIES(src include)

IF (SECURITY_FOUND)

  # OS X 10.7 and older do not have some functions we use, fall back to OpenSSL there

  CHECK_LIBRARY_EXISTS("${SECURITY_DIRS}" SSLCreateContext "Security/SecureTransport.h" HAVE_NEWER_SECURITY)

  IF (HAVE_NEWER_SECURITY)

    MESSAGE("-- Found Security ${SECURITY_DIRS}")

    LIST(APPEND LIBGIT2_PC_LIBS "-framework Security")

  ELSE()

    MESSAGE("-- Security framework is too old, falling back to OpenSSL")

    SET(SECURITY_FOUND "NO")

    SET(SECURITY_DIRS "")

    SET(SECURITY_DIR "")

    SET(USE_OPENSSL "ON")

  ENDIF()

ENDIF()

IF (COREFOUNDATION_FOUND)

  MESSAGE("-- Found CoreFoundation ${COREFOUNDATION_DIRS}")

  LIST(APPEND LIBGIT2_PC_LIBS "-framework CoreFoundation")

ENDIF()

IF (WIN32 AND EMBED_SSH_PATH)

	FILE(GLOB SRC_SSH "${EMBED_SSH_PATH}/src/*.c")

	INCLUDE_DIRECTORIES("${EMBED_SSH_PATH}/include")

	FILE(WRITE "${EMBED_SSH_PATH}/src/libssh2_config.h" "#define HAVE_WINCNG\n#define LIBSSH2_WINCNG\n#include \"../win32/libssh2_config.h\"")

	ADD_DEFINITIONS(-DGIT_SSH)

ENDIF()

IF (WIN32 AND WINHTTP)

	ADD_DEFINITIONS(-DGIT_WINHTTP)

	ADD_DEFINITIONS(-DGIT_HTTPS)

	# Since MinGW does not come with headers or an import library for winhttp,

	# we have to include a private header and generate our own import library

	IF (MINGW)

		FIND_PROGRAM(DLLTOOL dlltool CMAKE_FIND_ROOT_PATH_BOTH)

		IF (NOT DLLTOOL)

			MESSAGE(FATAL_ERROR "Could not find dlltool command")

		ENDIF ()

		SET(LIBWINHTTP_PATH "${CMAKE_CURRENT_BINARY_DIR}/deps/winhttp")

		FILE(MAKE_DIRECTORY ${LIBWINHTTP_PATH})

		IF (CMAKE_SIZEOF_VOID_P EQUAL 8)

			set(WINHTTP_DEF "${CMAKE_CURRENT_SOURCE_DIR}/deps/winhttp/winhttp64.def")

		ELSE()

			set(WINHTTP_DEF "${CMAKE_CURRENT_SOURCE_DIR}/deps/winhttp/winhttp.def")

		ENDIF()

		ADD_CUSTOM_COMMAND(

			OUTPUT ${LIBWINHTTP_PATH}/libwinhttp.a

			COMMAND ${DLLTOOL} -d ${WINHTTP_DEF} -k -D winhttp.dll -l libwinhttp.a

			DEPENDS ${WINHTTP_DEF}

			WORKING_DIRECTORY ${LIBWINHTTP_PATH}

		)

		SET_SOURCE_FILES_PROPERTIES(

			${CMAKE_CURRENT_SOURCE_DIR}/src/transports/winhttp.c

			PROPERTIES OBJECT_DEPENDS ${LIBWINHTTP_PATH}/libwinhttp.a

		)

		INCLUDE_DIRECTORIES(deps/winhttp)

		LINK_DIRECTORIES(${LIBWINHTTP_PATH})

	ENDIF ()

	LINK_LIBRARIES(winhttp rpcrt4 crypt32 ole32)

	LIST(APPEND LIBGIT2_PC_LIBS "-lwinhttp" "-lrpcrt4" "-lcrypt32" "-lole32")

ELSE ()

	IF (CURL)

		PKG_CHECK_MODULES(CURL libcurl)

	ENDIF ()

	IF (NOT AMIGA AND USE_OPENSSL)

		FIND_PACKAGE(OpenSSL)

	ENDIF ()

	IF (CURL_FOUND)

		ADD_DEFINITIONS(-DGIT_CURL)

		INCLUDE_DIRECTORIES(${CURL_INCLUDE_DIRS})

		LINK_DIRECTORIES(${CURL_LIBRARY_DIRS})

		LINK_LIBRARIES(${CURL_LIBRARIES})

		LIST(APPEND LIBGIT2_PC_LIBS ${CURL_LDFLAGS})

	ENDIF()

ENDIF()

# Specify sha1 implementation

IF (USE_SHA1DC)

	ADD_DEFINITIONS(-DGIT_SHA1_COLLISIONDETECT)

	ADD_DEFINITIONS(-DSHA1DC_NO_STANDARD_INCLUDES=1)

	ADD_DEFINITIONS(-DSHA1DC_CUSTOM_INCLUDE_SHA1_C=\"common.h\")

	ADD_DEFINITIONS(-DSHA1DC_CUSTOM_INCLUDE_UBC_CHECK_C=\"common.h\")

	FILE(GLOB SRC_SHA1 src/hash/hash_collisiondetect.c src/hash/sha1dc/*)

ELSEIF (WIN32 AND NOT MINGW)

	ADD_DEFINITIONS(-DGIT_SHA1_WIN32)

	FILE(GLOB SRC_SHA1 src/hash/hash_win32.c)

ELSEIF (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")

	ADD_DEFINITIONS(-DGIT_SHA1_COMMON_CRYPTO)

ELSEIF (OPENSSL_FOUND)

	ADD_DEFINITIONS(-DGIT_SHA1_OPENSSL)

	IF (CMAKE_SYSTEM_NAME MATCHES "FreeBSD")

		LIST(APPEND LIBGIT2_PC_LIBS "-lssl")

	ELSE()

		SET(LIBGIT2_PC_REQUIRES "${LIBGIT2_PC_REQUIRES} openssl")

	ENDIF ()

ELSE()

	FILE(GLOB SRC_SHA1 src/hash/hash_generic.c)

ENDIF()

# Enable tracing

IF (ENABLE_TRACE STREQUAL "ON")

	ADD_DEFINITIONS(-DGIT_TRACE)

ENDIF()

# Include POSIX regex when it is required

IF(WIN32 OR AMIGA OR CMAKE_SYSTEM_NAME MATCHES "(Solaris|SunOS)")

	INCLUDE_DIRECTORIES(deps/regex)

	SET(SRC_REGEX deps/regex/regex.c)

ENDIF()

# Optional external dependency: http-parser

FIND_PACKAGE(HTTP_Parser)

IF (HTTP_PARSER_FOUND AND HTTP_PARSER_VERSION_MAJOR EQUAL 2)

	INCLUDE_DIRECTORIES(${HTTP_PARSER_INCLUDE_DIRS})

	LINK_LIBRARIES(${HTTP_PARSER_LIBRARIES})

	LIST(APPEND LIBGIT2_PC_LIBS "-lhttp_parser")

ELSE()

	MESSAGE(STATUS "http-parser version 2 was not found; using bundled 3rd-party sources.")

	INCLUDE_DIRECTORIES(deps/http-parser)

	FILE(GLOB SRC_HTTP deps/http-parser/*.c deps/http-parser/*.h)

ENDIF()

# Optional external dependency: zlib

FIND_PACKAGE(ZLIB)

IF (ZLIB_FOUND)

	INCLUDE_DIRECTORIES(${ZLIB_INCLUDE_DIRS})

	LINK_LIBRARIES(${ZLIB_LIBRARIES})

	IF(APPLE OR CMAKE_SYSTEM_NAME MATCHES "FreeBSD")

		LIST(APPEND LIBGIT2_PC_LIBS "-lz")

	ELSE()

		SET(LIBGIT2_PC_REQUIRES "${LIBGIT2_PC_REQUIRES} zlib")

	ENDIF()

ELSE()

	MESSAGE(STATUS "zlib was not found; using bundled 3rd-party sources." )

	INCLUDE_DIRECTORIES(deps/zlib)

	ADD_DEFINITIONS(-DNO_VIZ -DSTDC -DNO_GZIP)

	FILE(GLOB SRC_ZLIB deps/zlib/*.c deps/zlib/*.h)

ENDIF()

# Optional external dependency: libssh2

IF (USE_SSH)

	PKG_CHECK_MODULES(LIBSSH2 libssh2)

ENDIF()

IF (LIBSSH2_FOUND)

	ADD_DEFINITIONS(-DGIT_SSH)

	INCLUDE_DIRECTORIES(${LIBSSH2_INCLUDE_DIRS})

	LINK_DIRECTORIES(${LIBSSH2_LIBRARY_DIRS})

	LIST(APPEND LIBGIT2_PC_LIBS ${LIBSSH2_LDFLAGS})

	#SET(LIBGIT2_PC_LIBS "${LIBGIT2_PC_LIBS} ${LIBSSH2_LDFLAGS}")

	SET(SSH_LIBRARIES ${LIBSSH2_LIBRARIES})

	CHECK_LIBRARY_EXISTS("${LIBSSH2_LIBRARIES}" libssh2_userauth_publickey_frommemory "${LIBSSH2_LIBRARY_DIRS}" HAVE_LIBSSH2_MEMORY_CREDENTIALS)

	IF (HAVE_LIBSSH2_MEMORY_CREDENTIALS)

		ADD_DEFINITIONS(-DGIT_SSH_MEMORY_CREDENTIALS)

	ENDIF()

ELSE()

	MESSAGE(STATUS "LIBSSH2 not found. Set CMAKE_PREFIX_PATH if it is installed outside of the default search path.")

ENDIF()

# Optional external dependency: libgssapi

IF (USE_GSSAPI)

	FIND_PACKAGE(GSSAPI)

ENDIF()

IF (GSSAPI_FOUND)

	ADD_DEFINITIONS(-DGIT_GSSAPI)

ENDIF()

# Optional external dependency: iconv

IF (USE_ICONV)

	FIND_PACKAGE(Iconv)

ENDIF()

IF (ICONV_FOUND)

	ADD_DEFINITIONS(-DGIT_USE_ICONV)

	INCLUDE_DIRECTORIES(${ICONV_INCLUDE_DIR})

	LIST(APPEND LIBGIT2_PC_LIBS ${ICONV_LIBRARIES})

ENDIF()

# Platform specific compilation flags

IF (MSVC)

	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}")

	IF (STDCALL)

		# /Gz - stdcall calling convention

		SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /Gz")

	ENDIF ()

	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(CRT_FLAG_DEBUG "${CRT_FLAG_DEBUG} /DGIT_MSVC_CRTDBG")

		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}")

	SET(WIN_RC "src/win32/git2.rc")

ELSE ()

	SET(CMAKE_C_FLAGS "-D_GNU_SOURCE ${CMAKE_C_FLAGS}")

	ADD_C_FLAG_IF_SUPPORTED(-Wall)

	ADD_C_FLAG_IF_SUPPORTED(-Wextra)

	IF (CMAKE_SYSTEM_NAME MATCHES "(Solaris|SunOS)")

		SET(CMAKE_C_FLAGS "-std=c99 -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")

	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 ()

	ADD_C_FLAG_IF_SUPPORTED(-Wdocumentation)

	ADD_C_FLAG_IF_SUPPORTED(-Wno-missing-field-initializers)

	ADD_C_FLAG_IF_SUPPORTED(-Wstrict-aliasing)

	ADD_C_FLAG_IF_SUPPORTED(-Wstrict-prototypes)

	ADD_C_FLAG_IF_SUPPORTED(-Wdeclaration-after-statement)

	ADD_C_FLAG_IF_SUPPORTED(-Wno-unused-const-variable)

	ADD_C_FLAG_IF_SUPPORTED(-Wno-unused-function)

	IF (APPLE) # Apple deprecated OpenSSL

		ADD_C_FLAG_IF_SUPPORTED(-Wno-deprecated-declarations)

	ENDIF()

	IF (PROFILE)

		SET(CMAKE_C_FLAGS "-pg ${CMAKE_C_FLAGS}")

		SET(CMAKE_EXE_LINKER_FLAGS "-pg ${CMAKE_EXE_LINKER_FLAGS}")

	ENDIF ()

ENDIF()

CHECK_SYMBOL_EXISTS(regcomp_l "regex.h;xlocale.h" HAVE_REGCOMP_L)

IF (HAVE_REGCOMP_L)

	ADD_DEFINITIONS(-DHAVE_REGCOMP_L)

ENDIF ()

CHECK_FUNCTION_EXISTS(futimens HAVE_FUTIMENS)

IF (HAVE_FUTIMENS)

	ADD_DEFINITIONS(-DHAVE_FUTIMENS)

ENDIF ()

CHECK_FUNCTION_EXISTS(qsort_r HAVE_QSORT_R)

IF (HAVE_QSORT_R)

	ADD_DEFINITIONS(-DHAVE_QSORT_R)

ENDIF ()

CHECK_FUNCTION_EXISTS(qsort_s HAVE_QSORT_S)

IF (HAVE_QSORT_S)

	ADD_DEFINITIONS(-DHAVE_QSORT_S)

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 (SECURITY_FOUND)

  ADD_DEFINITIONS(-DGIT_SECURE_TRANSPORT)

  ADD_DEFINITIONS(-DGIT_HTTPS)

  INCLUDE_DIRECTORIES(${SECURITY_INCLUDE_DIR})

ENDIF ()

IF (OPENSSL_FOUND)

  ADD_DEFINITIONS(-DGIT_OPENSSL)

  ADD_DEFINITIONS(-DGIT_HTTPS)

  INCLUDE_DIRECTORIES(${OPENSSL_INCLUDE_DIR})

  SET(SSL_LIBRARIES ${OPENSSL_LIBRARIES})

ENDIF()

IF (THREADSAFE)

	IF (NOT WIN32)

		FIND_PACKAGE(Threads REQUIRED)

	ENDIF()

	ADD_DEFINITIONS(-DGIT_THREADS)

ENDIF()

IF (USE_NSEC)

	ADD_DEFINITIONS(-DGIT_USE_NSEC)

ENDIF()

IF (HAVE_STRUCT_STAT_ST_MTIM)

	ADD_DEFINITIONS(-DGIT_USE_STAT_MTIM)

ELSEIF (HAVE_STRUCT_STAT_ST_MTIMESPEC)

	ADD_DEFINITIONS(-DGIT_USE_STAT_MTIMESPEC)

ELSEIF (HAVE_STRUCT_STAT_ST_MTIME_NSEC)

	ADD_DEFINITIONS(-DGIT_USE_STAT_MTIME_NSEC)

ENDIF()

ADD_DEFINITIONS(-D_FILE_OFFSET_BITS=64)

# Collect sourcefiles

FILE(GLOB SRC_H include/git2.h include/git2/*.h include/git2/sys/*.h)

# On Windows use specific platform sources

IF (WIN32 AND NOT CYGWIN)

	ADD_DEFINITIONS(-DWIN32 -D_WIN32_WINNT=0x0501)

	FILE(GLOB SRC_OS src/win32/*.c src/win32/*.h)

ELSEIF (AMIGA)

	ADD_DEFINITIONS(-DNO_ADDRINFO -DNO_READDIR_R -DNO_MMAP)

ELSE()

	IF (VALGRIND)

		ADD_DEFINITIONS(-DNO_MMAP)

	ENDIF()

	FILE(GLOB SRC_OS src/unix/*.c src/unix/*.h)

ENDIF()

FILE(GLOB SRC_GIT2 src/*.c src/*.h src/transports/*.c src/transports/*.h src/xdiff/*.c src/xdiff/*.h)

# Determine architecture of the machine

IF (CMAKE_SIZEOF_VOID_P EQUAL 8)

	ADD_DEFINITIONS(-DGIT_ARCH_64)

ELSEIF (CMAKE_SIZEOF_VOID_P EQUAL 4)

	ADD_DEFINITIONS(-DGIT_ARCH_32)

ELSEIF (CMAKE_SIZEOF_VOID_P)

	MESSAGE(FATAL_ERROR "Unsupported architecture (pointer size is ${CMAKE_SIZEOF_VOID_P} bytes)")

ELSE()

	MESSAGE(FATAL_ERROR "Unsupported architecture (CMAKE_SIZEOF_VOID_P is unset)")

ENDIF()

# Compile and link libgit2

ADD_LIBRARY(git2 ${SRC_H} ${SRC_GIT2} ${SRC_OS} ${SRC_ZLIB} ${SRC_HTTP} ${SRC_REGEX} ${SRC_SSH} ${SRC_SHA1} ${WIN_RC})

TARGET_LINK_LIBRARIES(git2 ${SECURITY_DIRS})

TARGET_LINK_LIBRARIES(git2 ${COREFOUNDATION_DIRS})

TARGET_LINK_LIBRARIES(git2 ${SSL_LIBRARIES})

TARGET_LINK_LIBRARIES(git2 ${SSH_LIBRARIES})

TARGET_LINK_LIBRARIES(git2 ${GSSAPI_LIBRARIES})

TARGET_LINK_LIBRARIES(git2 ${ICONV_LIBRARIES})

TARGET_OS_LIBRARIES(git2)

# Workaround for Cmake bug #0011240 (see http://public.kitware.com/Bug/view.php?id=11240)

# Win64+MSVC+static libs = linker error

IF(MSVC AND GIT_ARCH_64 AND NOT BUILD_SHARED_LIBS)

  SET_TARGET_PROPERTIES(git2 PROPERTIES STATIC_LIBRARY_FLAGS "/MACHINE:x64")

ENDIF()

IDE_SPLIT_SOURCES(git2)

IF (SONAME)

	SET_TARGET_PROPERTIES(git2 PROPERTIES VERSION ${LIBGIT2_VERSION_STRING})

	SET_TARGET_PROPERTIES(git2 PROPERTIES SOVERSION ${LIBGIT2_SOVERSION})

	IF (LIBGIT2_FILENAME)

		ADD_DEFINITIONS(-DLIBGIT2_FILENAME=\"${LIBGIT2_FILENAME}\")

		SET_TARGET_PROPERTIES(git2 PROPERTIES OUTPUT_NAME ${LIBGIT2_FILENAME})

	ELSEIF (DEFINED LIBGIT2_PREFIX)

		SET_TARGET_PROPERTIES(git2 PROPERTIES PREFIX "${LIBGIT2_PREFIX}")

	ENDIF()

ENDIF()

STRING(REPLACE ";" " " LIBGIT2_PC_LIBS "${LIBGIT2_PC_LIBS}")

CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/libgit2.pc.in ${CMAKE_CURRENT_BINARY_DIR}/libgit2.pc @ONLY)

IF (MSVC_IDE)

   # Precompiled headers

   SET_TARGET_PROPERTIES(git2 PROPERTIES COMPILE_FLAGS "/Yuprecompiled.h /FIprecompiled.h")

   SET_SOURCE_FILES_PROPERTIES(src/win32/precompiled.c COMPILE_FLAGS "/Ycprecompiled.h")

ENDIF ()

# Install

INSTALL(TARGETS git2

	RUNTIME DESTINATION ${BIN_INSTALL_DIR}

	LIBRARY DESTINATION ${LIB_INSTALL_DIR}

	ARCHIVE DESTINATION ${LIB_INSTALL_DIR}

)

INSTALL(FILES ${CMAKE_CURRENT_BINARY_DIR}/libgit2.pc DESTINATION ${LIB_INSTALL_DIR}/pkgconfig )

INSTALL(DIRECTORY include/git2 DESTINATION ${INCLUDE_INSTALL_DIR} )

INSTALL(FILES include/git2.h DESTINATION ${INCLUDE_INSTALL_DIR} )

# Tests

IF (BUILD_CLAR)

	FIND_PACKAGE(PythonInterp)

	IF(NOT PYTHONINTERP_FOUND)

	  MESSAGE(FATAL_ERROR "Could not find a python interpeter, which is needed to build the tests. "

	    "Make sure python is available, or pass -DBUILD_CLAR=OFF to skip building the tests")

	ENDIF()

	SET(CLAR_FIXTURES "${CMAKE_CURRENT_SOURCE_DIR}/tests/resources/")

	SET(CLAR_PATH "${CMAKE_CURRENT_SOURCE_DIR}/tests")

	SET(CLAR_RESOURCES "${CMAKE_CURRENT_SOURCE_DIR}/tests/resources" CACHE PATH "Path to test resources.")

	ADD_DEFINITIONS(-DCLAR_FIXTURE_PATH=\"${CLAR_FIXTURES}\")

	ADD_DEFINITIONS(-DCLAR_RESOURCES=\"${TEST_RESOURCES}\")

	ADD_DEFINITIONS(-DCLAR_TMPDIR=\"libgit2_tests\")

	INCLUDE_DIRECTORIES(${CLAR_PATH})

	FILE(GLOB_RECURSE SRC_TEST ${CLAR_PATH}/*/*.c ${CLAR_PATH}/*/*.h)

	SET(SRC_CLAR "${CLAR_PATH}/main.c" "${CLAR_PATH}/clar_libgit2.c" "${CLAR_PATH}/clar_libgit2_trace.c" "${CLAR_PATH}/clar_libgit2_timer.c" "${CLAR_PATH}/clar.c")

	ADD_CUSTOM_COMMAND(

		OUTPUT ${CLAR_PATH}/clar.suite

		COMMAND ${PYTHON_EXECUTABLE} generate.py -f -xonline -xstress -xperf .

		DEPENDS ${SRC_TEST}

		WORKING_DIRECTORY ${CLAR_PATH}

	)

	SET_SOURCE_FILES_PROPERTIES(

		${CLAR_PATH}/clar.c

		PROPERTIES OBJECT_DEPENDS ${CLAR_PATH}/clar.suite)

	ADD_EXECUTABLE(libgit2_clar ${SRC_H} ${SRC_GIT2} ${SRC_OS} ${SRC_CLAR} ${SRC_TEST} ${SRC_ZLIB} ${SRC_HTTP} ${SRC_REGEX} ${SRC_SSH} ${SRC_SHA1})

	TARGET_LINK_LIBRARIES(libgit2_clar ${COREFOUNDATION_DIRS})

	TARGET_LINK_LIBRARIES(libgit2_clar ${SECURITY_DIRS})

	TARGET_LINK_LIBRARIES(libgit2_clar ${SSL_LIBRARIES})

	TARGET_LINK_LIBRARIES(libgit2_clar ${SSH_LIBRARIES})

	TARGET_LINK_LIBRARIES(libgit2_clar ${GSSAPI_LIBRARIES})

	TARGET_LINK_LIBRARIES(libgit2_clar ${ICONV_LIBRARIES})

	TARGET_OS_LIBRARIES(libgit2_clar)

	IDE_SPLIT_SOURCES(libgit2_clar)

	IF (MSVC_IDE)

		# Precompiled headers

		SET_TARGET_PROPERTIES(libgit2_clar PROPERTIES COMPILE_FLAGS "/Yuprecompiled.h /FIprecompiled.h")

	ENDIF ()

	ENABLE_TESTING()

	ADD_TEST(offline   libgit2_clar -v -xonline)

	ADD_TEST(online    libgit2_clar -v -sonline)

	ADD_TEST(gitdaemon libgit2_clar -v -sonline::push)

	ADD_TEST(ssh       libgit2_clar -v -sonline::push -sonline::clone::ssh_cert -sonline::clone::ssh_with_paths)

	ADD_TEST(proxy     libgit2_clar -v -sonline::clone::proxy_credentials_in_url -sonline::clone::proxy_credentials_request)

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 ()