PROJECT(libgit2 C)

CMAKE_MINIMUM_REQUIRED(VERSION 2.6)

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

INCLUDE(CheckLibraryExists)

INCLUDE(AddCFlagIfSupported)

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" OFF )

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( ANDROID "Build for android NDK" 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 )

IF(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")

SET( USE_ICONV ON )

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 )

# 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 )

# 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()

SET(LIBGIT2_PC_REQUIRES "")

SET(LIBGIT2_PC_LIBS "")

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.")

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)

SET(LIBGIT2_PC_LIBS "${LIBGIT2_PC_LIBS} -lsocket -lnsl" PARENT_SCOPE)

ENDIF()

CHECK_LIBRARY_EXISTS(rt clock_gettime "time.h" NEED_LIBRT)

IF(NEED_LIBRT)

TARGET_LINK_LIBRARIES(${target} rt)

SET(LIBGIT2_PC_LIBS "${LIBGIT2_PC_LIBS} -lrt" PARENT_SCOPE)

ENDIF()

IF(THREADSAFE)

TARGET_LINK_LIBRARIES(${target} ${CMAKE_THREAD_LIBS_INIT})

ENDIF()

ENDFUNCTION()

FUNCTION(MSVC_SPLIT_SOURCES target)

IF(MSVC_IDE)

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}")

INCLUDE_DIRECTORIES(src include)

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 AND NOT MINGW)

ADD_DEFINITIONS(-DGIT_WINHTTP)

INCLUDE_DIRECTORIES(deps/http-parser)

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

ELSE ()

IF (NOT AMIGA)

FIND_PACKAGE(OpenSSL)

ENDIF ()

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})

SET(LIBGIT2_PC_LIBS "${LIBGIT2_PC_LIBS} -lhttp_parser")

ELSE()

MESSAGE(STATUS "http-parser was not found or is too old; using bundled 3rd-party sources.")

INCLUDE_DIRECTORIES(deps/http-parser)

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

ENDIF()

ENDIF()

IF (WIN32 AND NOT MINGW AND NOT SHA1_TYPE STREQUAL "builtin")

ADD_DEFINITIONS(-DWIN32_SHA1)

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

ELSEIF (OPENSSL_FOUND AND NOT SHA1_TYPE STREQUAL "builtin")

ADD_DEFINITIONS(-DOPENSSL_SHA1)

IF (CMAKE_SYSTEM_NAME MATCHES "FreeBSD")

SET(LIBGIT2_PC_LIBS "${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()

IF (ENABLE_TRACE STREQUAL "ON")

ADD_DEFINITIONS(-DGIT_TRACE)

ENDIF()

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

INCLUDE_DIRECTORIES(deps/regex)

SET(SRC_REGEX deps/regex/regex.c)

ENDIF()

FIND_PACKAGE(ZLIB)

IF (ZLIB_FOUND)

INCLUDE_DIRECTORIES(${ZLIB_INCLUDE_DIRS})

LINK_LIBRARIES(${ZLIB_LIBRARIES})

IF(APPLE OR CMAKE_SYSTEM_NAME MATCHES "FreeBSD")

SET(LIBGIT2_PC_LIBS "${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()

IF (USE_SSH)

FIND_PACKAGE(LIBSSH2)

ENDIF()

IF (LIBSSH2_FOUND)

ADD_DEFINITIONS(-DGIT_SSH)

INCLUDE_DIRECTORIES(${LIBSSH2_INCLUDE_DIR})

SET(LIBGIT2_PC_REQUIRES "${LIBGIT2_PC_REQUIRES} libssh2")

SET(SSH_LIBRARIES ${LIBSSH2_LIBRARIES})

ENDIF()

IF (USE_GSSAPI)

FIND_PACKAGE(GSSAPI)

ENDIF()

IF (GSSAPI_FOUND)

ADD_DEFINITIONS(-DGIT_GSSAPI)

ENDIF()

IF (USE_ICONV)

FIND_PACKAGE(Iconv)

ENDIF()

IF (ICONV_FOUND)

ADD_DEFINITIONS(-DGIT_USE_ICONV)

INCLUDE_DIRECTORIES(${ICONV_INCLUDE_DIR})

SET(LIBGIT2_PC_LIBS "${LIBGIT2_PC_LIBS} ${ICONV_LIBRARIES}")

ENDIF()

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()

# /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 "/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")

# Precompiled headers

ELSE ()

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

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()

IF (WIN32 AND NOT CYGWIN)

SET(CMAKE_C_FLAGS_DEBUG "-D_DEBUG")

ENDIF ()

IF (MINGW) # MinGW always does PIC and complains if we tell it to

STRING(REGEX REPLACE "-fPIC" "" CMAKE_SHARED_LIBRARY_C_FLAGS "${CMAKE_SHARED_LIBRARY_C_FLAGS}")

# 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)

ELSEIF (BUILD_SHARED_LIBS)

ADD_C_FLAG_IF_SUPPORTED(-fvisibility=hidden)

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

ENDIF ()

ADD_C_FLAG_IF_SUPPORTED(-Wno-missing-field-initializers)

ADD_C_FLAG_IF_SUPPORTED(-Wstrict-aliasing=2)

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()

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 (OPENSSL_FOUND)

ADD_DEFINITIONS(-DGIT_SSL)

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()

ADD_DEFINITIONS(-D_FILE_OFFSET_BITS=64)

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

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)

IF (CMAKE_SIZEOF_VOID_P EQUAL 8)

ADD_DEFINITIONS(-DGIT_ARCH_64)

ELSEIF (CMAKE_SIZEOF_VOID_P EQUAL 4)

ADD_DEFINITIONS(-DGIT_ARCH_32)

ELSE()

MESSAGE(FATAL_ERROR "Unsupported architecture")

ENDIF()

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 ${SSL_LIBRARIES})

TARGET_LINK_LIBRARIES(git2 ${SSH_LIBRARIES})

TARGET_LINK_LIBRARIES(git2 ${GSSAPI_LIBRARIES})

TARGET_LINK_LIBRARIES(git2 ${ICONV_LIBRARIES})

TARGET_OS_LIBRARIES(git2)

IF(MSVC AND GIT_ARCH_64 AND NOT BUILD_SHARED_LIBS)

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

ENDIF()

MSVC_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 COMPILE_FLAGS "/Yuprecompiled.h /FIprecompiled.h")

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

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

MESSAGE(FATAL_ERROR "Could not find ctags command")