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# libgit2: the cross-platform, linkable library implementation of git.
# See `README.md` for build instructions.
#
# This top-level CMakeLists.txt sets up configuration options and
# determines which subprojects to build.
cmake_minimum_required(VERSION 3.5.1)
project(libgit2 VERSION "1.6.0" LANGUAGES C)
# Add find modules to the path
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${PROJECT_SOURCE_DIR}/cmake")
#
# Build options
#
# Experimental features
option(EXPERIMENTAL_SHA256 "Enable experimental SHA256 support (for R&D/testing)" OFF)
# Optional subsystems
option(BUILD_SHARED_LIBS "Build Shared Library (OFF for Static)" ON)
option(BUILD_TESTS "Build Tests using the Clar suite" ON)
option(BUILD_CLI "Build the command-line interface" ON)
option(BUILD_EXAMPLES "Build library usage example apps" OFF)
option(BUILD_FUZZERS "Build the fuzz targets" OFF)
# Suggested functionality that may not be available on a per-platform basis
option(USE_THREADS "Use threads for parallel processing when possible" ON)
option(USE_NSEC "Support nanosecond precision file mtimes and ctimes" ON)
# Backend selection
option(USE_SSH "Link with libssh2 to enable SSH support" OFF)
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" ON)
option(USE_SHA256 "Enable SHA256. Can be set to HTTPS/Builtin" ON)
option(USE_GSSAPI "Link with libgssapi for SPNEGO auth" OFF)
set(USE_HTTP_PARSER "" CACHE STRING "Specifies the HTTP Parser implementation; either system or builtin.")
set(REGEX_BACKEND "" CACHE STRING "Regular expression implementation. One of regcomp_l, pcre2, pcre, regcomp, or builtin.")
option(USE_BUNDLED_ZLIB "Use the bundled version of zlib. Can be set to one of Bundled(ON)/Chromium. The Chromium option requires a x86_64 processor with SSE4.2 and CLMUL" OFF)
# Debugging options
option(USE_LEAK_CHECKER "Run tests with leak checker" OFF)
option(USE_STANDALONE_FUZZERS "Enable standalone fuzzers (compatible with gcc)" OFF)
option(DEBUG_POOL "Enable debug pool allocator" OFF)
option(DEBUG_STRICT_ALLOC "Enable strict allocator behavior" OFF)
option(DEBUG_STRICT_OPEN "Enable path validation in open" OFF)
# Output options
option(SONAME "Set the (SO)VERSION of the target" ON)
set(LIBGIT2_FILENAME "git2" CACHE STRING "Name of the produced binary")
option(DEPRECATE_HARD "Do not include deprecated functions in the library" OFF)
# Compilation options
option(ENABLE_WERROR "Enable compilation with -Werror" OFF)
if(UNIX)
# NTLM client requires crypto libraries from the system HTTPS stack
if(NOT USE_HTTPS)
option(USE_NTLMCLIENT "Enable NTLM support on Unix." OFF)
else()
option(USE_NTLMCLIENT "Enable NTLM support on Unix." ON)
endif()
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)
# Enable leak checking using the debugging C runtime.
option(WIN32_LEAKCHECK "Enable leak reporting via crtdbg" OFF)
endif()
if(WIN32)
# By default, libgit2 is built with WinHTTP. To use the built-in
# HTTP transport, invoke CMake with the "-DUSE_WINHTTP=OFF" argument.
option(USE_WINHTTP "Use Win32 WinHTTP routines" ON)
endif()
if(NOT CMAKE_CONFIGURATION_TYPES AND NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "Choose the type of build, options are: Debug Release RelWithDebInfo MinSizeRel." FORCE)
endif()
# Modules
include(CheckLibraryExists)
include(CheckFunctionExists)
include(CheckSymbolExists)
include(CheckStructHasMember)
include(CheckPrototypeDefinition)
include(AddCFlagIfSupported)
include(FindPkgLibraries)
include(FindThreads)
include(FindStatNsec)
include(Findfutimens)
include(GNUInstallDirs)
include(IdeSplitSources)
include(FeatureSummary)
include(EnableWarnings)
include(DefaultCFlags)
include(ExperimentalFeatures)
#
# Subdirectories
#
add_subdirectory(src)
if(BUILD_TESTS)
enable_testing()
add_subdirectory(tests)
endif()
if(BUILD_EXAMPLES)
add_subdirectory(examples)
endif()
if(BUILD_FUZZERS)
if((BUILD_TESTS OR BUILD_EXAMPLES) AND NOT USE_STANDALONE_FUZZERS)
message(FATAL_ERROR "Cannot build the fuzzer and the tests or examples together")
endif()
add_subdirectory(fuzzers)
endif()
# Export for people who use us as a dependency
if(NOT "${CMAKE_CURRENT_SOURCE_DIR}" STREQUAL "${CMAKE_SOURCE_DIR}")
set(LIBGIT2_DEPENDENCY_OBJECTS ${LIBGIT2_DEPENDENCY_OBJECTS} PARENT_SCOPE)
set(LIBGIT2_SYSTEM_LIBS ${LIBGIT2_SYSTEM_LIBS} PARENT_SCOPE)
endif()
# Summary
feature_summary(WHAT ENABLED_FEATURES DESCRIPTION "Enabled features:")
feature_summary(WHAT DISABLED_FEATURES DESCRIPTION "Disabled features:")
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