mirror of
https://git.proxmox.com/git/libgit2
synced 2025-05-02 21:34:15 +00:00
357 lines
12 KiB
CMake
357 lines
12 KiB
CMake
# CMake build script for the libgit2 project
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#
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# Building (out of source build):
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# > mkdir build && cd build
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# > cmake .. [-DSETTINGS=VALUE]
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# > cmake --build .
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#
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# Testing:
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# > ctest -V
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#
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# Install:
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# > cmake --build . --target install
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PROJECT(libgit2 C)
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CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
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# Build options
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#
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OPTION( BUILD_SHARED_LIBS "Build Shared Library (OFF for Static)" ON )
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OPTION( THREADSAFE "Build libgit2 as threadsafe" OFF )
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OPTION( BUILD_CLAR "Build Tests using the Clar suite" ON )
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OPTION( BUILD_EXAMPLES "Build library usage example apps" OFF )
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OPTION( TAGS "Generate tags" OFF )
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OPTION( PROFILE "Generate profiling information" OFF )
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IF(MSVC)
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# This option is only availalbe when building with MSVC. By default,
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# libgit2 is build using the stdcall calling convention, as that's what
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# the CLR expects by default and how the Windows API is built.
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#
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# If you are writing a C or C++ program and want to link to libgit2, you
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# have to either:
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# - Add /Gz to the compiler options of _your_ program / library.
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# - Turn this off by invoking CMake with the "-DSTDCALL=Off" argument.
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#
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OPTION( STDCALL "Build libgit2 with the __stdcall convention" ON )
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ENDIF()
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# Installation paths
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#
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SET(BIN_INSTALL_DIR bin CACHE PATH "Where to install binaries to.")
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SET(LIB_INSTALL_DIR lib CACHE PATH "Where to install libraries to.")
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SET(INCLUDE_INSTALL_DIR include CACHE PATH "Where to install headers to.")
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FUNCTION(TARGET_OS_LIBRARIES target)
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IF(WIN32)
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TARGET_LINK_LIBRARIES(${target} ws2_32)
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ELSEIF(CMAKE_SYSTEM_NAME MATCHES "(Solaris|SunOS)")
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TARGET_LINK_LIBRARIES(${target} socket nsl)
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ENDIF ()
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IF(THREADSAFE)
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TARGET_LINK_LIBRARIES(${target} ${CMAKE_THREAD_LIBS_INIT})
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ENDIF()
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ENDFUNCTION()
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# For the MSVC IDE, this function splits up the source files like windows
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# explorer does. This is esp. useful with the libgit2_clar project, were
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# usually 2 or more files share the same name. Sadly, this file grouping
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# is a per-directory option in cmake and not per-target, resulting in
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# empty virtual folders "tests-clar" for the git2.dll
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FUNCTION(MSVC_SPLIT_SOURCES target)
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IF(MSVC_IDE)
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GET_TARGET_PROPERTY(sources ${target} SOURCES)
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FOREACH(source ${sources})
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IF(source MATCHES ".*/")
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STRING(REPLACE ${CMAKE_CURRENT_SOURCE_DIR}/ "" rel ${source})
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IF(rel)
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STRING(REGEX REPLACE "/([^/]*)$" "" rel ${rel})
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IF(rel)
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STRING(REPLACE "/" "\\\\" rel ${rel})
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SOURCE_GROUP(${rel} FILES ${source})
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ENDIF()
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ENDIF()
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ENDIF()
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ENDFOREACH()
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ENDIF()
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ENDFUNCTION()
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FILE(STRINGS "include/git2/version.h" GIT2_HEADER REGEX "^#define LIBGIT2_VERSION \"[^\"]*\"$")
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STRING(REGEX REPLACE "^.*LIBGIT2_VERSION \"([0-9]+).*$" "\\1" LIBGIT2_VERSION_MAJOR "${GIT2_HEADER}")
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STRING(REGEX REPLACE "^.*LIBGIT2_VERSION \"[0-9]+\\.([0-9]+).*$" "\\1" LIBGIT2_VERSION_MINOR "${GIT2_HEADER}")
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STRING(REGEX REPLACE "^.*LIBGIT2_VERSION \"[0-9]+\\.[0-9]+\\.([0-9]+).*$" "\\1" LIBGIT2_VERSION_REV "${GIT2_HEADER}")
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SET(LIBGIT2_VERSION_STRING "${LIBGIT2_VERSION_MAJOR}.${LIBGIT2_VERSION_MINOR}.${LIBGIT2_VERSION_REV}")
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# Find required dependencies
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INCLUDE_DIRECTORIES(src include)
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IF (WIN32 AND NOT MINGW)
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ADD_DEFINITIONS(-DGIT_WINHTTP)
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ELSE ()
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IF (NOT AMIGA)
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FIND_PACKAGE(OpenSSL)
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ENDIF ()
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FILE(GLOB SRC_HTTP deps/http-parser/*.c)
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INCLUDE_DIRECTORIES(deps/http-parser)
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ENDIF()
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# Specify sha1 implementation
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IF (WIN32 AND NOT MINGW AND NOT SHA1_TYPE STREQUAL "builtin")
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ADD_DEFINITIONS(-DWIN32_SHA1)
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FILE(GLOB SRC_SHA1 src/hash/hash_win32.c)
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ELSEIF (OPENSSL_FOUND AND NOT SHA1_TYPE STREQUAL "builtin")
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ADD_DEFINITIONS(-DOPENSSL_SHA1)
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ELSE()
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FILE(GLOB SRC_SHA1 src/hash/hash_generic.c)
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ENDIF()
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# Include POSIX regex when it is required
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IF(WIN32 OR AMIGA)
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INCLUDE_DIRECTORIES(deps/regex)
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SET(SRC_REGEX deps/regex/regex.c)
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ENDIF()
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# Optional external dependency: zlib
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IF(NOT ZLIB_LIBRARY)
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# It's optional, but FIND_PACKAGE gives a warning that looks more like an
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# error.
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FIND_PACKAGE(ZLIB QUIET)
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ENDIF()
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IF (ZLIB_FOUND)
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INCLUDE_DIRECTORIES(${ZLIB_INCLUDE_DIRS})
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LINK_LIBRARIES(${ZLIB_LIBRARIES})
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ELSE()
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MESSAGE( "zlib was not found; using bundled 3rd-party sources." )
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INCLUDE_DIRECTORIES(deps/zlib)
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ADD_DEFINITIONS(-DNO_VIZ -DSTDC -DNO_GZIP)
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FILE(GLOB SRC_ZLIB deps/zlib/*.c)
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ENDIF()
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# Platform specific compilation flags
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IF (MSVC)
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STRING(REPLACE "/Zm1000" " " CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
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# /GF - String pooling
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# /MP - Parallel build
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SET(CMAKE_C_FLAGS "/GF /MP /nologo ${CMAKE_C_FLAGS}")
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IF (STDCALL)
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# /Gz - stdcall calling convention
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SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /Gz")
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ENDIF ()
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# /Zi - Create debugging information
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# /Od - Disable optimization
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# /D_DEBUG - #define _DEBUG
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# /MTd - Statically link the multithreaded debug version of the CRT
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# /RTC1 - Run time checks
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SET(CMAKE_C_FLAGS_DEBUG "/Zi /Od /D_DEBUG /MTd /RTC1")
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# /MT - Statically link the multithreaded release version of the CRT
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# /O2 - Optimize for speed
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# /Oy - Enable frame pointer omission (FPO) (otherwise CMake will automatically turn it off)
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# /GL - Link time code generation (whole program optimization)
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# /Gy - Function-level linking
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SET(CMAKE_C_FLAGS_RELEASE "/MT /O2 /Oy /GL /Gy")
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# /Oy- - Disable frame pointer omission (FPO)
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SET(CMAKE_C_FLAGS_RELWITHDEBINFO "/Zi /MT /O2 /Oy- /GL /Gy")
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# /O1 - Optimize for size
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SET(CMAKE_C_FLAGS_MINSIZEREL "/MT /O1 /Oy /GL /Gy")
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# /DYNAMICBASE - Address space load randomization (ASLR)
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# /NXCOMPAT - Data execution prevention (DEP)
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# /LARGEADDRESSAWARE - >2GB user address space on x86
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# /VERSION - Embed version information in PE header
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SET(CMAKE_EXE_LINKER_FLAGS "/DYNAMICBASE /NXCOMPAT /LARGEADDRESSAWARE /VERSION:${LIBGIT2_VERSION_MAJOR}.${LIBGIT2_VERSION_MINOR}")
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# /DEBUG - Create a PDB
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# /LTCG - Link time code generation (whole program optimization)
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# /OPT:REF /OPT:ICF - Fold out duplicate code at link step
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# /INCREMENTAL:NO - Required to use /LTCG
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# /DEBUGTYPE:cv,fixup - Additional data embedded in the PDB (requires /INCREMENTAL:NO, so not on for Debug)
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SET(CMAKE_EXE_LINKER_FLAGS_DEBUG "/DEBUG")
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SET(CMAKE_EXE_LINKER_FLAGS_RELEASE "/RELEASE /LTCG /OPT:REF /OPT:ICF /INCREMENTAL:NO")
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SET(CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO "/DEBUG /RELEASE /LTCG /OPT:REF /OPT:ICF /INCREMENTAL:NO /DEBUGTYPE:cv,fixup")
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SET(CMAKE_EXE_LINKER_FLAGS_MINSIZEREL "/RELEASE /LTCG /OPT:REF /OPT:ICF /INCREMENTAL:NO")
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# Same linker settings for DLL as EXE
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SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}")
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SET(CMAKE_SHARED_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG}")
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SET(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE}")
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SET(CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO}")
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SET(CMAKE_SHARED_LINKER_FLAGS_MINSIZEREL "${CMAKE_EXE_LINKER_FLAGS_MINSIZEREL}")
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SET(WIN_RC "src/win32/git2.rc")
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# Precompiled headers
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ELSE ()
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SET(CMAKE_C_FLAGS "-D_GNU_SOURCE -Wall -Wextra -Wno-missing-field-initializers -Wstrict-aliasing=2 -Wstrict-prototypes ${CMAKE_C_FLAGS}")
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IF (WIN32 AND NOT CYGWIN)
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SET(CMAKE_C_FLAGS_DEBUG "-D_DEBUG")
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ENDIF ()
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IF (MINGW) # MinGW always does PIC and complains if we tell it to
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STRING(REGEX REPLACE "-fPIC" "" CMAKE_SHARED_LIBRARY_C_FLAGS "${CMAKE_SHARED_LIBRARY_C_FLAGS}")
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ELSEIF (BUILD_SHARED_LIBS)
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SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fvisibility=hidden -fPIC")
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ENDIF ()
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IF (APPLE) # Apple deprecated OpenSSL
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SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-deprecated-declarations")
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ENDIF ()
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IF (PROFILE)
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SET(CMAKE_C_FLAGS "-pg ${CMAKE_C_FLAGS}")
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SET(CMAKE_EXE_LINKER_FLAGS "-pg ${CMAKE_EXE_LINKER_FLAGS}")
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ENDIF ()
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ENDIF()
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IF( NOT CMAKE_CONFIGURATION_TYPES )
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# Build Debug by default
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IF (NOT CMAKE_BUILD_TYPE)
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SET(CMAKE_BUILD_TYPE "Debug" CACHE STRING "Choose the type of build, options are: Debug Release RelWithDebInfo MinSizeRel." FORCE)
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ENDIF ()
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ELSE()
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# Using a multi-configuration generator eg MSVC or Xcode
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# that uses CMAKE_CONFIGURATION_TYPES and not CMAKE_BUILD_TYPE
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ENDIF()
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IF (OPENSSL_FOUND)
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ADD_DEFINITIONS(-DGIT_SSL)
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INCLUDE_DIRECTORIES(${OPENSSL_INCLUDE_DIR})
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SET(SSL_LIBRARIES ${OPENSSL_LIBRARIES})
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ENDIF()
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IF (THREADSAFE)
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IF (NOT WIN32)
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find_package(Threads REQUIRED)
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ENDIF()
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ADD_DEFINITIONS(-DGIT_THREADS)
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ENDIF()
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ADD_DEFINITIONS(-D_FILE_OFFSET_BITS=64)
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# Collect sourcefiles
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FILE(GLOB SRC_H include/git2/*.h)
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# On Windows use specific platform sources
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IF (WIN32 AND NOT CYGWIN)
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ADD_DEFINITIONS(-DWIN32 -D_WIN32_WINNT=0x0501)
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FILE(GLOB SRC_OS src/win32/*.c)
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ELSEIF (AMIGA)
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ADD_DEFINITIONS(-DNO_ADDRINFO -DNO_READDIR_R)
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FILE(GLOB SRC_OS src/amiga/*.c)
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ELSE()
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FILE(GLOB SRC_OS src/unix/*.c)
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ENDIF()
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FILE(GLOB SRC_GIT2 src/*.c src/transports/*.c src/xdiff/*.c)
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# Compile and link libgit2
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ADD_LIBRARY(git2 ${SRC_GIT2} ${SRC_OS} ${SRC_ZLIB} ${SRC_HTTP} ${SRC_REGEX} ${SRC_SHA1} ${WIN_RC})
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TARGET_LINK_LIBRARIES(git2 ${SSL_LIBRARIES})
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TARGET_OS_LIBRARIES(git2)
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MSVC_SPLIT_SOURCES(git2)
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SET_TARGET_PROPERTIES(git2 PROPERTIES VERSION ${LIBGIT2_VERSION_STRING})
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SET_TARGET_PROPERTIES(git2 PROPERTIES SOVERSION ${LIBGIT2_VERSION_MAJOR})
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CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/libgit2.pc.in ${CMAKE_CURRENT_BINARY_DIR}/libgit2.pc @ONLY)
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IF (MSVC_IDE)
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# Precompiled headers
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SET_TARGET_PROPERTIES(git2 PROPERTIES COMPILE_FLAGS "/Yuprecompiled.h /FIprecompiled.h")
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SET_SOURCE_FILES_PROPERTIES(src/win32/precompiled.c COMPILE_FLAGS "/Ycprecompiled.h")
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ENDIF ()
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# Install
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INSTALL(TARGETS git2
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RUNTIME DESTINATION ${BIN_INSTALL_DIR}
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LIBRARY DESTINATION ${LIB_INSTALL_DIR}
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ARCHIVE DESTINATION ${LIB_INSTALL_DIR}
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)
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INSTALL(FILES ${CMAKE_CURRENT_BINARY_DIR}/libgit2.pc DESTINATION ${LIB_INSTALL_DIR}/pkgconfig )
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INSTALL(DIRECTORY include/git2 DESTINATION ${INCLUDE_INSTALL_DIR} )
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INSTALL(FILES include/git2.h DESTINATION ${INCLUDE_INSTALL_DIR} )
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# Tests
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IF (BUILD_CLAR)
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FIND_PACKAGE(PythonInterp REQUIRED)
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SET(CLAR_FIXTURES "${CMAKE_CURRENT_SOURCE_DIR}/tests-clar/resources/")
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SET(CLAR_PATH "${CMAKE_CURRENT_SOURCE_DIR}/tests-clar")
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SET(CLAR_RESOURCES "${CMAKE_CURRENT_SOURCE_DIR}/tests-clar/resources" CACHE PATH "Path to test resources.")
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ADD_DEFINITIONS(-DCLAR_FIXTURE_PATH=\"${CLAR_FIXTURES}\")
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ADD_DEFINITIONS(-DCLAR_RESOURCES=\"${TEST_RESOURCES}\")
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INCLUDE_DIRECTORIES(${CLAR_PATH})
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FILE(GLOB_RECURSE SRC_TEST ${CLAR_PATH}/*/*.c)
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SET(SRC_CLAR "${CLAR_PATH}/main.c" "${CLAR_PATH}/clar_libgit2.c" "${CLAR_PATH}/clar.c")
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ADD_CUSTOM_COMMAND(
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OUTPUT ${CLAR_PATH}/clar.suite
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COMMAND ${PYTHON_EXECUTABLE} generate.py -xonline .
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DEPENDS ${SRC_TEST}
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WORKING_DIRECTORY ${CLAR_PATH}
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)
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SET_SOURCE_FILES_PROPERTIES(
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${CLAR_PATH}/clar.c
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PROPERTIES OBJECT_DEPENDS ${CLAR_PATH}/clar.suite)
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ADD_EXECUTABLE(libgit2_clar ${SRC_GIT2} ${SRC_OS} ${SRC_CLAR} ${SRC_TEST} ${SRC_ZLIB} ${SRC_HTTP} ${SRC_REGEX} ${SRC_SHA1})
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TARGET_LINK_LIBRARIES(libgit2_clar ${SSL_LIBRARIES})
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TARGET_OS_LIBRARIES(libgit2_clar)
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MSVC_SPLIT_SOURCES(libgit2_clar)
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IF (MSVC_IDE)
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# Precompiled headers
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SET_TARGET_PROPERTIES(libgit2_clar PROPERTIES COMPILE_FLAGS "/Yuprecompiled.h /FIprecompiled.h")
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ENDIF ()
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ENABLE_TESTING()
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ADD_TEST(libgit2_clar libgit2_clar -ionline)
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ENDIF ()
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IF (TAGS)
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FIND_PROGRAM(CTAGS ctags)
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IF (NOT CTAGS)
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message(FATAL_ERROR "Could not find ctags command")
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ENDIF ()
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FILE(GLOB_RECURSE SRC_ALL *.[ch])
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ADD_CUSTOM_COMMAND(
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OUTPUT tags
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COMMAND ${CTAGS} -a ${SRC_ALL}
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DEPENDS ${SRC_ALL}
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)
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ADD_CUSTOM_TARGET(
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do_tags ALL
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DEPENDS tags
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)
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ENDIF ()
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IF (BUILD_EXAMPLES)
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FILE(GLOB_RECURSE EXAMPLE_SRC examples/network/*.c)
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ADD_EXECUTABLE(cgit2 ${EXAMPLE_SRC})
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IF(WIN32)
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TARGET_LINK_LIBRARIES(cgit2 git2)
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ELSE()
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TARGET_LINK_LIBRARIES(cgit2 git2 pthread)
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ENDIF()
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ADD_EXECUTABLE(git-diff examples/diff.c)
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TARGET_LINK_LIBRARIES(git-diff git2)
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ADD_EXECUTABLE(git-general examples/general.c)
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TARGET_LINK_LIBRARIES(git-general git2)
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ADD_EXECUTABLE(git-showindex examples/showindex.c)
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TARGET_LINK_LIBRARIES(git-showindex git2)
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ENDIF ()
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