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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 "2.0.0" LANGUAGES C)

# Add find modules to the path

set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${PROJECT_SOURCE_DIR}/cmake")

# Build options

# Optional subsystems

option(BUILD_SHARED_LIBS "Build Shared Library (OFF for Static)" ON)

option(BUILD_TESTS "Build the test suite" ON)

option(BUILD_BENCHMARKS "Build the benchmark suite" OFF)

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)

# Feature enablement and backend selection

set(USE_THREADS "" CACHE STRING "Use threads for parallel processing when possible. One of ON, OFF, or a specific provider: pthreads or win32. (Defaults to ON.)")

set(USE_SSH "" CACHE STRING "Enables SSH support and optionally selects provider. One of ON, OFF, or a specific provider: libssh2 or exec. (Defaults to OFF.)")

set(USE_HTTP "" CACHE STRING "Enable HTTP transport support (covers both http:// and https:// remotes). One of ON or OFF. When OFF, HTTPS is also disabled. (Defaults to ON.)")

set(USE_HTTPS "" CACHE STRING "Enable HTTPS support and optionally selects the provider. One of ON, OFF, or a specific provider: OpenSSL, OpenSSL-FIPS, OpenSSL-Dynamic, mbedTLS, SecureTransport, Schannel, or WinHTTP. (Defaults to ON.)")

set(USE_SHA1 "" CACHE STRING "Selects SHA1 provider. One of builtin, HTTPS, or a specific provider. (Defaults to builtin.)")

set(USE_SHA256 "" CACHE STRING "Selects SHA256 provider. One of Builtin, HTTPS, or a specific provider. (Defaults to HTTPS.)")

set(USE_HTTP_PARSER "" CACHE STRING "Selects HTTP Parser support: http-parser, llhttp, or builtin. (Defaults to builtin.)")

set(USE_AUTH_NTLM "" CACHE STRING "Enables NTLM authentication support. One of Builtin or win32.")

set(USE_AUTH_NEGOTIATE "" CACHE STRING "Enable Negotiate (SPNEGO) authentication support. One of GSSAPI or win32.")

# set(USE_XDIFF "" CACHE STRING "Specifies the xdiff implementation; either system or builtin.")

set(USE_REGEX "" CACHE STRING "Selects regex provider. One of regcomp_l, pcre2, pcre, regcomp, or builtin.")

set(USE_COMPRESSION "" CACHE STRING "Selects compression backend. Either builtin or zlib.")

set(USE_NSEC "" CACHE STRING "Enable nanosecond precision timestamps. One of ON, OFF, or a specific provider: mtimespec, mtim, mtime, or win32. (Defaults to ON).")

if(APPLE)

# Currently only available on macOS for `precomposeUnicode` support

set(USE_I18N "" CACHE STRING "Enables internationalization support.")

endif()

# Debugging options

set(DEBUG_LEAK_CHECKER "" CACHE STRING "Configure for leak checking test runs. One of valgrind, leaks, or win32. Either valgrind or leaks.")

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

# Default to c99 on Android Studio for compatibility; c90 everywhere else

if("${CMAKE_SYSTEM_NAME}" STREQUAL "Android")

set(CMAKE_C_STANDARD "99" CACHE STRING "The C standard to compile against")

else()

set(CMAKE_C_STANDARD "90" CACHE STRING "The C standard to compile against")

endif()

option(CMAKE_C_EXTENSIONS "Whether compiler extensions are supported" OFF)

option(ENABLE_WERROR "Enable compilation with -Werror" OFF)

if(UNIX)

option(ENABLE_REPRODUCIBLE_BUILDS "Enable reproducible builds" OFF)

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)

endif()

if(NOT CMAKE_CONFIGURATION_TYPES AND NOT CMAKE_BUILD_TYPE)

set(CMAKE_BUILD_TYPE "RelWithDebInfo" CACHE STRING "Choose the type of build, options are: Debug Release RelWithDebInfo MinSizeRel." FORCE)

endif()

# Common settings across all projects, dependencies, etc. Always support

# 64 bit file operations, even on 32 bit platforms.

if(NOT WIN32)

add_definitions(-D_FILE_OFFSET_BITS=64)

endif()

if(NOT BUILD_SHARED_LIBS)

add_definitions(-DGIT_STATIC_BUILD=1)

endif()

# Modules

include(FeatureSummary)

include(AddCFlagIfSupported)

include(EnableWarnings)

include(DefaultCFlags)

include(CheckLibraryExists)

include(CheckFunctionExists)

include(CheckSymbolExists)

include(CheckStructHasMember)

include(CheckPrototypeDefinitionSafe)

include(FindPkgLibraries)

include(FindThreads)

include(FindStatNsec)

include(Findfutimens)

include(GNUInstallDirs)

include(IdeSplitSources)

include(ExperimentalFeatures)

# Subdirectories

add_subdirectory(src)

if(BUILD_TESTS)

enable_testing()

add_subdirectory(tests)

endif()

if(BUILD_BENCHMARKS)

add_subdirectory(benchmarks)

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:")

# warn for not using sha1dc

foreach(WARNING ${WARNINGS})

message(WARNING ${WARNING})

endforeach()