[libgit2.git] / 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 3.5.1)
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"				ON)
OPTION(LIBGIT2_FILENAME			"Name of the produced binary"				OFF)
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_SHA1				"Enable SHA1. Can be set to CollisionDetection(ON)/HTTPS/Generic" ON)
OPTION(USE_GSSAPI			"Link with libgssapi for SPNEGO auth"			OFF)
OPTION(USE_STANDALONE_FUZZERS		"Enable standalone fuzzers (compatible with gcc)"	OFF)
OPTION(USE_LEAK_CHECKER			"Run tests with leak checker"				OFF)
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)
   SET(USE_HTTP_PARSER			"" CACHE STRING "Specifies the HTTP Parser implementation; either system or builtin.")
OPTION(DEPRECATE_HARD			"Do not include deprecated functions in the library"	OFF)
   SET(REGEX_BACKEND			"" CACHE STRING "Regular expression implementation. One of regcomp_l, pcre2, pcre, regcomp, or builtin.")

IF (UNIX)
	IF (NOT USE_HTTPS)
	    OPTION(USE_NTLMCLIENT		"Enable NTLM support on Unix."				OFF )
	ELSE()
	    OPTION(USE_NTLMCLIENT		"Enable NTLM support on Unix."				ON )
	ENDIF()
ENDIF()

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}")

IF (DEPRECATE_HARD)
	ADD_DEFINITIONS(-DGIT_DEPRECATE_HARD)
ENDIF()

# 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}")

	# /IGNORE:4221 - Ignore empty compilation units
	SET(CMAKE_STATIC_LINKER_FLAGS "/IGNORE:4221")

	# /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(int-conversion)

	# MinGW uses gcc, which expects POSIX formatting for printf, but
	# uses the Windows C library, which uses its own format specifiers.
	# Disable format specifier warnings.
	IF(MINGW)
		DISABLE_WARNINGS(format)
		DISABLE_WARNINGS(format-security)
	ELSE()
		ENABLE_WARNINGS(format)
		ENABLE_WARNINGS(format-security)
	ENDIF()

	IF("${CMAKE_C_COMPILER_ID}" STREQUAL "Clang")
		DISABLE_WARNINGS(documentation-deprecated-sync)
	ENDIF()

	IF (PROFILE)
		SET(CMAKE_C_FLAGS "-pg ${CMAKE_C_FLAGS}")
		SET(CMAKE_EXE_LINKER_FLAGS "-pg ${CMAKE_EXE_LINKER_FLAGS}")
	ENDIF ()
ENDIF()

# Ensure that MinGW provides the correct header files.
IF (WIN32 AND NOT CYGWIN)
	ADD_DEFINITIONS(-DWIN32 -D_WIN32_WINNT=0x0600)
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()

FEATURE_SUMMARY(WHAT ENABLED_FEATURES DESCRIPTION "Enabled features:")
FEATURE_SUMMARY(WHAT DISABLED_FEATURES DESCRIPTION "Disabled features:")
Commit	Line	Data
583cf169	1	# CMake build script for the libgit2 project
73c46d53	2	#
bfe0658e	3	# Building (out of source build):
73c46d53	4	# > mkdir build && cd build
bfe0658e PD	5	# > cmake .. [-DSETTINGS=VALUE]
bfe0658e PD	6	# > cmake --build .
932d1baf	7	#
73c46d53 PD	8	# Testing:
	9	# > ctest -V
	10	#
	11	# Install:
bfe0658e	12	# > cmake --build . --target install
73c46d53	13
583cf169	14	PROJECT(libgit2 C)
0c9c969a	15	CMAKE_MINIMUM_REQUIRED(VERSION 3.5.1)
8f426d7d	16	CMAKE_POLICY(SET CMP0015 NEW)
ac3d33df	17	IF(POLICY CMP0051)
eae0bfdc PP	18	CMAKE_POLICY(SET CMP0051 NEW)
eae0bfdc PP	19	ENDIF()
ac3d33df	20	IF(POLICY CMP0042)
eae0bfdc PP	21	CMAKE_POLICY(SET CMP0042 NEW)
eae0bfdc PP	22	ENDIF()
ac3d33df JK	23	IF(POLICY CMP0054)
	24	CMAKE_POLICY(SET CMP0054 NEW)
	25	ENDIF()
583cf169	26
7a6e0281	27	# Add find modules to the path
eae0bfdc	28	SET(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${libgit2_SOURCE_DIR}/cmake/Modules/")
7369b3c3	29
5bda607c	30	INCLUDE(CheckLibraryExists)
8649dfd8	31	INCLUDE(CheckFunctionExists)
ab96ca55	32	INCLUDE(CheckSymbolExists)
e9e6df2c	33	INCLUDE(CheckStructHasMember)
6c7cee42	34	INCLUDE(CheckPrototypeDefinition) # Added in CMake 3.0
5c8d5eac	35	INCLUDE(AddCFlagIfSupported)
4b3ec53c	36	INCLUDE(FindPkgLibraries)
eae0bfdc PP	37	INCLUDE(FindThreads)
	38	INCLUDE(FindStatNsec)
	39	INCLUDE(IdeSplitSources)
	40	INCLUDE(FeatureSummary)
	41	INCLUDE(EnableWarnings)
5bda607c	42
19a766a2 SC	43	# Build options
19a766a2 SC	44	#
ac3d33df JK	45	OPTION(SONAME "Set the (SO)VERSION of the target" ON)
	46	OPTION(BUILD_SHARED_LIBS "Build Shared Library (OFF for Static)" ON)
	47	OPTION(THREADSAFE "Build libgit2 as threadsafe" ON)
	48	OPTION(BUILD_CLAR "Build Tests using the Clar suite" ON)
	49	OPTION(BUILD_EXAMPLES "Build library usage example apps" OFF)
	50	OPTION(BUILD_FUZZERS "Build the fuzz targets" OFF)
	51	OPTION(TAGS "Generate tags" OFF)
	52	OPTION(PROFILE "Generate profiling information" OFF)
0c9c969a	53	OPTION(ENABLE_TRACE "Enables tracing support" ON)
ac3d33df	54	OPTION(LIBGIT2_FILENAME "Name of the produced binary" OFF)
ac3d33df JK	55	OPTION(USE_SSH "Link with libssh2 to enable SSH support" ON)
ac3d33df JK	56	OPTION(USE_HTTPS "Enable HTTPS support. Can be set to a specific backend" ON)
0c9c969a	57	OPTION(USE_SHA1 "Enable SHA1. Can be set to CollisionDetection(ON)/HTTPS/Generic" ON)
ac3d33df JK	58	OPTION(USE_GSSAPI "Link with libgssapi for SPNEGO auth" OFF)
ac3d33df JK	59	OPTION(USE_STANDALONE_FUZZERS "Enable standalone fuzzers (compatible with gcc)" OFF)
0c9c969a	60	OPTION(USE_LEAK_CHECKER "Run tests with leak checker" OFF)
ac3d33df JK	61	OPTION(DEBUG_POOL "Enable debug pool allocator" OFF)
	62	OPTION(ENABLE_WERROR "Enable compilation with -Werror" OFF)
	63	OPTION(USE_BUNDLED_ZLIB "Use the bundled version of zlib" OFF)
0c9c969a	64	SET(USE_HTTP_PARSER "" CACHE STRING "Specifies the HTTP Parser implementation; either system or builtin.")
ac3d33df	65	OPTION(DEPRECATE_HARD "Do not include deprecated functions in the library" OFF)
0c9c969a UG	66	SET(REGEX_BACKEND "" CACHE STRING "Regular expression implementation. One of regcomp_l, pcre2, pcre, regcomp, or builtin.")
	67
	68	IF (UNIX)
	69	IF (NOT USE_HTTPS)
	70	OPTION(USE_NTLMCLIENT "Enable NTLM support on Unix." OFF )
	71	ELSE()
	72	OPTION(USE_NTLMCLIENT "Enable NTLM support on Unix." ON )
	73	ENDIF()
	74	ENDIF()
ed0571f8	75
eae0bfdc	76	IF (UNIX AND NOT APPLE)
ac3d33df	77	OPTION(ENABLE_REPRODUCIBLE_BUILDS "Enable reproducible builds" OFF)
ed0571f8	78	ENDIF()
73291aff	79
eae0bfdc	80	IF (APPLE)
ac3d33df	81	OPTION(USE_ICONV "Link with and use iconv library" ON)
92dac975	82	ENDIF()
82b2fc2c	83
19a766a2	84	IF(MSVC)
08f32085 Q	85	# This option must match the settings used in your program, in particular if you
08f32085 Q	86	# are linking statically
ac3d33df	87	OPTION(STATIC_CRT "Link the static CRT libraries" ON)
1bfe7133	88
01fe8374 CMN	89	# If you want to embed a copy of libssh2 into libgit2, pass a
01fe8374 CMN	90	# path to libssh2
ac3d33df	91	OPTION(EMBED_SSH_PATH "Path to libssh2 to embed (Windows)" OFF)
19a766a2 SC	92	ENDIF()
19a766a2 SC	93
6bb54cbf	94
8f426d7d PK	95	IF(WIN32)
	96	# By default, libgit2 is built with WinHTTP. To use the built-in
	97	# HTTP transport, invoke CMake with the "-DWINHTTP=OFF" argument.
ac3d33df	98	OPTION(WINHTTP "Use Win32 WinHTTP routines" ON)
8f426d7d PK	99	ENDIF()
8f426d7d PK	100
d06c589f JH	101	IF(MSVC)
d06c589f JH	102	# Enable MSVC CRTDBG memory leak reporting when in debug mode.
ac3d33df	103	OPTION(MSVC_CRTDBG "Enable CRTDBG memory leak reporting" OFF)
d06c589f JH	104	ENDIF()
d06c589f JH	105
eae0bfdc	106	FILE(STRINGS "${libgit2_SOURCE_DIR}/include/git2/version.h" GIT2_HEADER REGEX "^#define LIBGIT2_VERSION \"[^\"]*\"$")
9d1dcca2 VM	107
	108	STRING(REGEX REPLACE "^.LIBGIT2_VERSION \"([0-9]+).$" "\\1" LIBGIT2_VERSION_MAJOR "${GIT2_HEADER}")
	109	STRING(REGEX REPLACE "^.LIBGIT2_VERSION \"[0-9]+\\.([0-9]+).$" "\\1" LIBGIT2_VERSION_MINOR "${GIT2_HEADER}")
	110	STRING(REGEX REPLACE "^.LIBGIT2_VERSION \"[0-9]+\\.[0-9]+\\.([0-9]+).$" "\\1" LIBGIT2_VERSION_REV "${GIT2_HEADER}")
	111	SET(LIBGIT2_VERSION_STRING "${LIBGIT2_VERSION_MAJOR}.${LIBGIT2_VERSION_MINOR}.${LIBGIT2_VERSION_REV}")
	112
0c9c969a UG	113	FILE(STRINGS "${libgit2_SOURCE_DIR}/include/git2/version.h" GIT2_HEADER_SOVERSION REGEX "^#define LIBGIT2_SOVERSION \"([0-9.]+)\"$")
0c9c969a UG	114	STRING(REGEX REPLACE "^.*LIBGIT2_SOVERSION \"([0-9.]+)\"$" "\\1" LIBGIT2_SOVERSION "${GIT2_HEADER_SOVERSION}")
99807672	115
ac3d33df JK	116	IF (DEPRECATE_HARD)
	117	ADD_DEFINITIONS(-DGIT_DEPRECATE_HARD)
	118	ENDIF()
	119
502dd2da	120	# Platform specific compilation flags
dcd62cb2	121	IF (MSVC)
ac3d33df JK	122	IF (STDCALL)
	123	MESSAGE(FATAL_ERROR "The STDCALL option is no longer supported; libgit2 is now always built as a cdecl library. If you're using PInvoke, please add the CallingConventions.Cdecl attribute for support.")
	124	ENDIF()
	125
eae0bfdc PP	126	ADD_DEFINITIONS(-D_SCL_SECURE_NO_WARNINGS)
	127	ADD_DEFINITIONS(-D_CRT_SECURE_NO_DEPRECATE)
	128	ADD_DEFINITIONS(-D_CRT_NONSTDC_NO_DEPRECATE)
dcd62cb2	129
ccf1a2ba	130	STRING(REPLACE "/Zm1000" " " CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
94155e2f	131
19be3f9e PK	132	# /GF - String pooling
	133	# /MP - Parallel build
	134	SET(CMAKE_C_FLAGS "/GF /MP /nologo ${CMAKE_C_FLAGS}")
	135
ac3d33df JK	136	# /Gd - explicitly set cdecl calling convention
ac3d33df JK	137	SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /Gd")
19be3f9e	138
08f32085 Q	139	IF (STATIC_CRT)
	140	SET(CRT_FLAG_DEBUG "/MTd")
	141	SET(CRT_FLAG_RELEASE "/MT")
	142	ELSE()
ccf1a2ba	143	SET(CRT_FLAG_DEBUG "/MDd")
08f32085 Q	144	SET(CRT_FLAG_RELEASE "/MD")
	145	ENDIF()
	146
d06c589f	147	IF (MSVC_CRTDBG)
eae0bfdc PP	148	SET(GIT_MSVC_CRTDBG 1)
	149	SET(CRT_FLAG_DEBUG "${CRT_FLAG_DEBUG}")
	150	SET(CMAKE_C_STANDARD_LIBRARIES "${CMAKE_C_STANDARD_LIBRARIES} Dbghelp.lib")
d06c589f JH	151	ENDIF()
d06c589f JH	152
19be3f9e PK	153	# /Zi - Create debugging information
	154	# /Od - Disable optimization
	155	# /D_DEBUG - #define _DEBUG
	156	# /MTd - Statically link the multithreaded debug version of the CRT
08f32085	157	# /MDd - Dynamically link the multithreaded debug version of the CRT
19be3f9e	158	# /RTC1 - Run time checks
08f030ce	159	SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /Zi /Od /D_DEBUG /RTC1 ${CRT_FLAG_DEBUG}")
19be3f9e	160
69c28b75	161	# /DNDEBUG - Disables asserts
19be3f9e	162	# /MT - Statically link the multithreaded release version of the CRT
08f32085	163	# /MD - Dynamically link the multithreaded release version of the CRT
19be3f9e PK	164	# /O2 - Optimize for speed
	165	# /Oy - Enable frame pointer omission (FPO) (otherwise CMake will automatically turn it off)
	166	# /GL - Link time code generation (whole program optimization)
	167	# /Gy - Function-level linking
08f32085	168	SET(CMAKE_C_FLAGS_RELEASE "/DNDEBUG /O2 /Oy /GL /Gy ${CRT_FLAG_RELEASE}")
19be3f9e PK	169
19be3f9e PK	170	# /Oy- - Disable frame pointer omission (FPO)
08f32085	171	SET(CMAKE_C_FLAGS_RELWITHDEBINFO "/DNDEBUG /Zi /O2 /Oy- /GL /Gy ${CRT_FLAG_RELEASE}")
19be3f9e PK	172
19be3f9e PK	173	# /O1 - Optimize for size
08f32085	174	SET(CMAKE_C_FLAGS_MINSIZEREL "/DNDEBUG /O1 /Oy /GL /Gy ${CRT_FLAG_RELEASE}")
19be3f9e	175
ac3d33df JK	176	# /IGNORE:4221 - Ignore empty compilation units
	177	SET(CMAKE_STATIC_LINKER_FLAGS "/IGNORE:4221")
	178
19be3f9e PK	179	# /DYNAMICBASE - Address space load randomization (ASLR)
	180	# /NXCOMPAT - Data execution prevention (DEP)
	181	# /LARGEADDRESSAWARE - >2GB user address space on x86
	182	# /VERSION - Embed version information in PE header
	183	SET(CMAKE_EXE_LINKER_FLAGS "/DYNAMICBASE /NXCOMPAT /LARGEADDRESSAWARE /VERSION:${LIBGIT2_VERSION_MAJOR}.${LIBGIT2_VERSION_MINOR}")
	184
	185	# /DEBUG - Create a PDB
	186	# /LTCG - Link time code generation (whole program optimization)
	187	# /OPT:REF /OPT:ICF - Fold out duplicate code at link step
	188	# /INCREMENTAL:NO - Required to use /LTCG
	189	# /DEBUGTYPE:cv,fixup - Additional data embedded in the PDB (requires /INCREMENTAL:NO, so not on for Debug)
	190	SET(CMAKE_EXE_LINKER_FLAGS_DEBUG "/DEBUG")
	191	SET(CMAKE_EXE_LINKER_FLAGS_RELEASE "/RELEASE /LTCG /OPT:REF /OPT:ICF /INCREMENTAL:NO")
	192	SET(CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO "/DEBUG /RELEASE /LTCG /OPT:REF /OPT:ICF /INCREMENTAL:NO /DEBUGTYPE:cv,fixup")
	193	SET(CMAKE_EXE_LINKER_FLAGS_MINSIZEREL "/RELEASE /LTCG /OPT:REF /OPT:ICF /INCREMENTAL:NO")
	194
	195	# Same linker settings for DLL as EXE
	196	SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}")
	197	SET(CMAKE_SHARED_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG}")
	198	SET(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE}")
	199	SET(CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO}")
	200	SET(CMAKE_SHARED_LINKER_FLAGS_MINSIZEREL "${CMAKE_EXE_LINKER_FLAGS_MINSIZEREL}")
e233fa6f	201	ELSE ()
eae0bfdc PP	202	IF (ENABLE_REPRODUCIBLE_BUILDS)
	203	SET(CMAKE_C_ARCHIVE_CREATE "<CMAKE_AR> Dqc <TARGET> <LINK_FLAGS> <OBJECTS>")
	204	SET(CMAKE_C_ARCHIVE_APPEND "<CMAKE_AR> Dq <TARGET> <LINK_FLAGS> <OBJECTS>")
	205	SET(CMAKE_C_ARCHIVE_FINISH "<CMAKE_RANLIB> -D <TARGET>")
	206	ENDIF()
	207
a02e8a38 PS	208	SET(CMAKE_C_FLAGS "-D_GNU_SOURCE ${CMAKE_C_FLAGS}")
a02e8a38 PS	209
eae0bfdc PP	210	ENABLE_WARNINGS(all)
eae0bfdc PP	211	ENABLE_WARNINGS(extra)
19be3f9e	212
98b8fcff	213	IF (CMAKE_SYSTEM_NAME MATCHES "(Solaris\|SunOS)")
ac3d33df	214	SET(CMAKE_C_FLAGS "-D_POSIX_C_SOURCE=200112L -D__EXTENSIONS__ -D_POSIX_PTHREAD_SEMANTICS ${CMAKE_C_FLAGS}")
98b8fcff JG	215	ENDIF()
98b8fcff JG	216
a64532e1	217	SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -D_DEBUG -O0")
19be3f9e	218
b6a2fd0e	219	IF (MINGW OR MSYS) # MinGW and MSYS always do PIC and complain if we tell them to
2eb18449	220	STRING(REGEX REPLACE "-fPIC" "" CMAKE_SHARED_LIBRARY_C_FLAGS "${CMAKE_SHARED_LIBRARY_C_FLAGS}")
b41e24a6	221	ELSEIF (BUILD_SHARED_LIBS)
5c8d5eac	222	ADD_C_FLAG_IF_SUPPORTED(-fvisibility=hidden)
c6cd3f8b JG	223
c6cd3f8b JG	224	SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC")
39cdf272	225	ENDIF ()
c6cd3f8b	226
b6a2fd0e PS	227	IF (MINGW)
	228	# MinGW >= 3.14 uses the C99-style stdio functions
	229	# automatically, but forks like mingw-w64 still want
	230	# us to define this in order to use them
	231	ADD_DEFINITIONS(-D__USE_MINGW_ANSI_STDIO=1)
	232	ENDIF ()
	233
eae0bfdc PP	234	ENABLE_WARNINGS(documentation)
	235	DISABLE_WARNINGS(missing-field-initializers)
	236	ENABLE_WARNINGS(strict-aliasing)
	237	ENABLE_WARNINGS(strict-prototypes)
	238	ENABLE_WARNINGS(declaration-after-statement)
	239	ENABLE_WARNINGS(shift-count-overflow)
ac3d33df JK	240	ENABLE_WARNINGS(unused-const-variable)
ac3d33df JK	241	ENABLE_WARNINGS(unused-function)
6c7cee42	242	ENABLE_WARNINGS(int-conversion)
0c9c969a UG	243
	244	# MinGW uses gcc, which expects POSIX formatting for printf, but
	245	# uses the Windows C library, which uses its own format specifiers.
	246	# Disable format specifier warnings.
	247	IF(MINGW)
	248	DISABLE_WARNINGS(format)
	249	DISABLE_WARNINGS(format-security)
	250	ELSE()
	251	ENABLE_WARNINGS(format)
	252	ENABLE_WARNINGS(format-security)
	253	ENDIF()
	254
	255	IF("${CMAKE_C_COMPILER_ID}" STREQUAL "Clang")
	256	DISABLE_WARNINGS(documentation-deprecated-sync)
	257	ENDIF()
823c0e9c	258
706a9974 RB	259	IF (PROFILE)
	260	SET(CMAKE_C_FLAGS "-pg ${CMAKE_C_FLAGS}")
	261	SET(CMAKE_EXE_LINKER_FLAGS "-pg ${CMAKE_EXE_LINKER_FLAGS}")
	262	ENDIF ()
90412507	263	ENDIF()
5b8bb8e7	264
0c9c969a UG	265	# Ensure that MinGW provides the correct header files.
	266	IF (WIN32 AND NOT CYGWIN)
	267	ADD_DEFINITIONS(-DWIN32 -D_WIN32_WINNT=0x0600)
	268	ENDIF()
	269
88149fae PT	270	IF( NOT CMAKE_CONFIGURATION_TYPES )
	271	# Build Debug by default
	272	IF (NOT CMAKE_BUILD_TYPE)
	273	SET(CMAKE_BUILD_TYPE "Debug" CACHE STRING "Choose the type of build, options are: Debug Release RelWithDebInfo MinSizeRel." FORCE)
	274	ENDIF ()
	275	ELSE()
	276	# Using a multi-configuration generator eg MSVC or Xcode
	277	# that uses CMAKE_CONFIGURATION_TYPES and not CMAKE_BUILD_TYPE
	278	ENDIF()
583cf169	279
ac3d33df JK	280	IF(BUILD_FUZZERS AND NOT USE_STANDALONE_FUZZERS)
	281	# The actual sanitizer link target will be added when linking the fuzz
	282	# targets.
	283	SET(CMAKE_REQUIRED_FLAGS "-fsanitize=fuzzer-no-link")
	284	ADD_C_FLAG(-fsanitize=fuzzer-no-link)
	285	UNSET(CMAKE_REQUIRED_FLAGS)
	286	ENDIF ()
	287
eae0bfdc	288	ADD_SUBDIRECTORY(src)
678e9e04	289
eae0bfdc PP	290	# Tests
	291	IF (NOT MSVC)
	292	IF (NOT BUILD_SHARED_LIBS)
	293	SET(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
	294	ENDIF()
73aaf674 BS	295	ENDIF ()
73aaf674 BS	296
3fd1520c	297	IF (BUILD_CLAR)
f1558d9b	298	ENABLE_TESTING()
eae0bfdc	299	ADD_SUBDIRECTORY(tests)
f1558d9b	300	ENDIF ()
e632f687 CB	301
	302	IF (TAGS)
	303	FIND_PROGRAM(CTAGS ctags)
	304	IF (NOT CTAGS)
48ce93e0	305	MESSAGE(FATAL_ERROR "Could not find ctags command")
e632f687 CB	306	ENDIF ()
	307
	308	FILE(GLOB_RECURSE SRC_ALL *.[ch])
	309
	310	ADD_CUSTOM_COMMAND(
	311	OUTPUT tags
	312	COMMAND ${CTAGS} -a ${SRC_ALL}
	313	DEPENDS ${SRC_ALL}
	314	)
	315	ADD_CUSTOM_TARGET(
	316	do_tags ALL
	317	DEPENDS tags
	318	)
	319	ENDIF ()
62986ff6 SG	320
62986ff6 SG	321	IF (BUILD_EXAMPLES)
60ee53df	322	ADD_SUBDIRECTORY(examples)
583cf169	323	ENDIF ()
eae0bfdc	324
ac3d33df JK	325	IF(BUILD_FUZZERS)
	326	IF(NOT USE_STANDALONE_FUZZERS)
	327	IF(BUILD_EXAMPLES)
	328	MESSAGE(FATAL_ERROR "Cannot build the fuzzer targets and the examples together")
	329	ENDIF()
	330	IF(BUILD_CLAR)
	331	MESSAGE(FATAL_ERROR "Cannot build the fuzzer targets and the tests together")
	332	ENDIF()
	333	ENDIF()
	334	ADD_SUBDIRECTORY(fuzzers)
	335	ENDIF()
	336
0c9c969a UG	337	FEATURE_SUMMARY(WHAT ENABLED_FEATURES DESCRIPTION "Enabled features:")
0c9c969a UG	338	FEATURE_SUMMARY(WHAT DISABLED_FEATURES DESCRIPTION "Disabled features:")