PROJECT(libgit2 C)

CMAKE_MINIMUM_REQUIRED(VERSION 2.6)

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 )

IF(MSVC)

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

# libgit2 is build using the stdcall calling convention, as that's what

# the CLR expects by default and how the Windows API is built.

#

# If you are writing a C or C++ program and want to link to libgit2, you

# have to either:

# - Add /Gz to the compiler options of _your_ program / library.

# - Turn this off by invoking CMake with the "-DSTDCALL=Off" argument.

#

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

ENDIF()

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)

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}")

INCLUDE_DIRECTORIES(src include)

IF (WIN32 AND NOT MINGW)

ADD_DEFINITIONS(-DGIT_WINHTTP)

ELSE ()

IF (NOT AMIGA)

FIND_PACKAGE(OpenSSL)

ENDIF ()

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

INCLUDE_DIRECTORIES(deps/http-parser)

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)

ELSE()

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

ENDIF()

IF(WIN32 OR AMIGA)

INCLUDE_DIRECTORIES(deps/regex)

SET(SRC_REGEX deps/regex/regex.c)

ENDIF()

IF(NOT ZLIB_LIBRARY)

# It's optional, but FIND_PACKAGE gives a warning that looks more like an

# error.

FIND_PACKAGE(ZLIB QUIET)

ENDIF()

IF (ZLIB_FOUND)

INCLUDE_DIRECTORIES(${ZLIB_INCLUDE_DIRS})

LINK_LIBRARIES(${ZLIB_LIBRARIES})

ELSE()

MESSAGE( "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)

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 ()

# /Zi - Create debugging information

# /Od - Disable optimization

# /D_DEBUG - #define _DEBUG

# /MTd - Statically link the multithreaded debug version of the CRT

# /RTC1 - Run time checks

SET(CMAKE_C_FLAGS_DEBUG "/Zi /Od /D_DEBUG /MTd /RTC1")

# /MT - Statically 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 "/MT /O2 /Oy /GL /Gy")

# /Oy- - Disable frame pointer omission (FPO)

SET(CMAKE_C_FLAGS_RELWITHDEBINFO "/Zi /MT /O2 /Oy- /GL /Gy")

# /O1 - Optimize for size

SET(CMAKE_C_FLAGS_MINSIZEREL "/MT /O1 /Oy /GL /Gy")

# /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 -Wno-missing-field-initializers -Wstrict-aliasing=2 -Wstrict-prototypes ${CMAKE_C_FLAGS}")

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}")

ELSEIF (BUILD_SHARED_LIBS)

SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fvisibility=hidden -fPIC")

ENDIF ()

IF (APPLE) # Apple deprecated OpenSSL

SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -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)

IF (WIN32 AND NOT CYGWIN)

ADD_DEFINITIONS(-DWIN32 -D_WIN32_WINNT=0x0501)

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

ELSEIF (AMIGA)

ADD_DEFINITIONS(-DNO_ADDRINFO -DNO_READDIR_R)

FILE(GLOB SRC_OS src/amiga/*.c)

ELSE()

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

ENDIF()

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

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

TARGET_LINK_LIBRARIES(git2 ${SSL_LIBRARIES})

TARGET_OS_LIBRARIES(git2)

MSVC_SPLIT_SOURCES(git2)

SET_TARGET_PROPERTIES(git2 PROPERTIES VERSION ${LIBGIT2_VERSION_STRING})

SET_TARGET_PROPERTIES(git2 PROPERTIES SOVERSION ${LIBGIT2_VERSION_MAJOR})

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(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} )

IF (BUILD_CLAR)

FIND_PACKAGE(PythonInterp REQUIRED)

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

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

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

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

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

message(FATAL_ERROR "Could not find ctags command")