thodg/libgit2/src/CMakeLists.txt

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• Hash : 96c61174
  Author :
  Date : 2022-06-13T11:19:55
  

  cmake: only use `getloadavg` where it exists

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• src/CMakeLists.txt

• # The main libgit2 source tree: this CMakeLists.txt identifies platform
  # support and includes the subprojects that make up core libgit2 support.
  
  #
  # Optional build configuration settings
  #
  
  if(DEPRECATE_HARD)
          add_definitions(-DGIT_DEPRECATE_HARD)
  endif()
  
  if(USE_LEAK_CHECKER STREQUAL "valgrind")
  	add_definitions(-DVALGRIND)
  endif()
  
  #
  # Optional debugging functionality
  #
  
  if(DEBUG_POOL)
  	set(GIT_DEBUG_POOL 1)
  endif()
  add_feature_info(debugpool GIT_DEBUG_POOL "debug pool allocator")
  
  if(DEBUG_STRICT_ALLOC)
  	set(GIT_DEBUG_STRICT_ALLOC 1)
  endif()
  add_feature_info(debugalloc GIT_DEBUG_STRICT_ALLOC "debug strict allocators")
  
  if(DEBUG_STRICT_OPEN)
  	set(GIT_DEBUG_STRICT_OPEN 1)
  endif()
  add_feature_info(debugopen GIT_DEBUG_STRICT_OPEN "path validation in open")
  
  #
  # Optional feature enablement
  #
  
  include(SelectGSSAPI)
  include(SelectHTTPSBackend)
  include(SelectHashes)
  include(SelectHTTPParser)
  include(SelectRegex)
  include(SelectSSH)
  include(SelectWinHTTP)
  include(SelectZlib)
  
  #
  # Platform support
  #
  
  # futimes/futimens
  
  if(HAVE_FUTIMENS)
  	set(GIT_USE_FUTIMENS 1)
  endif ()
  add_feature_info(futimens GIT_USE_FUTIMENS "futimens support")
  
  # qsort
  
  check_prototype_definition(qsort_r
  	"void qsort_r(void *base, size_t nmemb, size_t size, void *thunk, int (*compar)(void *, const void *, const void *))"
  	"" "stdlib.h" GIT_QSORT_R_BSD)
  
  check_prototype_definition(qsort_r
  	"void qsort_r(void *base, size_t nmemb, size_t size, int (*compar)(const void *, const void *, void *), void *arg)"
  	"" "stdlib.h" GIT_QSORT_R_GNU)
  
  check_function_exists(qsort_s GIT_QSORT_S)
  
  # random / entropy data
  
  check_function_exists(getentropy GIT_RAND_GETENTROPY)
  check_function_exists(getloadavg GIT_RAND_GETLOADAVG)
  
  # determine architecture of the machine
  
  if(CMAKE_SIZEOF_VOID_P EQUAL 8)
  	set(GIT_ARCH_64 1)
  elseif(CMAKE_SIZEOF_VOID_P EQUAL 4)
  	set(GIT_ARCH_32 1)
  elseif(CMAKE_SIZEOF_VOID_P)
  	message(FATAL_ERROR "Unsupported architecture (pointer size is ${CMAKE_SIZEOF_VOID_P} bytes)")
  else()
  	message(FATAL_ERROR "Unsupported architecture (CMAKE_SIZEOF_VOID_P is unset)")
  endif()
  
  # nanosecond mtime/ctime support
  
  if(USE_NSEC)
  	set(GIT_USE_NSEC 1)
  endif()
  
  # high-resolution stat support
  
  if(HAVE_STRUCT_STAT_ST_MTIM)
  	set(GIT_USE_STAT_MTIM 1)
  elseif(HAVE_STRUCT_STAT_ST_MTIMESPEC)
  	set(GIT_USE_STAT_MTIMESPEC 1)
  elseif(HAVE_STRUCT_STAT_ST_MTIME_NSEC)
  	set(GIT_USE_STAT_MTIME_NSEC 1)
  endif()
  
  # realtime support
  
  check_library_exists(rt clock_gettime "time.h" NEED_LIBRT)
  if(NEED_LIBRT)
  	list(APPEND LIBGIT2_SYSTEM_LIBS rt)
  	list(APPEND LIBGIT2_PC_LIBS "-lrt")
  endif()
  
  # platform libraries
  
  if(WIN32)
  	list(APPEND LIBGIT2_SYSTEM_LIBS ws2_32)
  endif()
  
  if(CMAKE_SYSTEM_NAME MATCHES "(Solaris|SunOS)")
  	list(APPEND LIBGIT2_SYSTEM_LIBS socket nsl)
  	list(APPEND LIBGIT2_PC_LIBS "-lsocket" "-lnsl")
  endif()
  
  if(CMAKE_SYSTEM_NAME MATCHES "Haiku")
  	list(APPEND LIBGIT2_SYSTEM_LIBS gnu network)
  	list(APPEND LIBGIT2_PC_LIBS "-lgnu -lnetwork")
  endif()
  
  if(AMIGA)
  	add_definitions(-DNO_ADDRINFO -DNO_READDIR_R -DNO_MMAP)
  endif()
  
  # threads
  
  if(USE_THREADS)
  	if(NOT WIN32)
  		find_package(Threads REQUIRED)
  		list(APPEND LIBGIT2_SYSTEM_LIBS ${CMAKE_THREAD_LIBS_INIT})
  		list(APPEND LIBGIT2_PC_LIBS ${CMAKE_THREAD_LIBS_INIT})
  	endif()
  
  	set(GIT_THREADS 1)
  endif()
  add_feature_info(threadsafe USE_THREADS "threadsafe support")
  
  #
  # Optional bundled features
  #
  
  # ntlmclient
  if(USE_NTLMCLIENT)
  	set(GIT_NTLM 1)
  	add_subdirectory("${PROJECT_SOURCE_DIR}/deps/ntlmclient" "${PROJECT_BINARY_DIR}/deps/ntlmclient")
  	list(APPEND LIBGIT2_DEPENDENCY_INCLUDES "${PROJECT_SOURCE_DIR}/deps/ntlmclient")
  	list(APPEND LIBGIT2_DEPENDENCY_OBJECTS "$<TARGET_OBJECTS:ntlmclient>")
  endif()
  add_feature_info(ntlmclient GIT_NTLM "NTLM authentication support for Unix")
  
  #
  # Optional external dependencies
  
  # iconv
  if(USE_ICONV)
  	find_package(Iconv)
  endif()
  if(ICONV_FOUND)
  	set(GIT_USE_ICONV 1)
  	list(APPEND LIBGIT2_SYSTEM_INCLUDES ${ICONV_INCLUDE_DIR})
  	list(APPEND LIBGIT2_SYSTEM_LIBS ${ICONV_LIBRARIES})
  	list(APPEND LIBGIT2_PC_LIBS ${ICONV_LIBRARIES})
  endif()
  add_feature_info(iconv GIT_USE_ICONV "iconv encoding conversion support")
  
  #
  # Configure support
  #
  
  configure_file(features.h.in git2/sys/features.h)
  
  #
  # Include child projects
  #
  
  add_subdirectory(libgit2)
  add_subdirectory(util)
  
  if(BUILD_CLI)
  	add_subdirectory(cli)
  endif()
  
  # re-export these to the root so that peer projects (tests, fuzzers,
  # examples) can use them
  set(LIBGIT2_INCLUDES ${LIBGIT2_INCLUDES} PARENT_SCOPE)
  set(LIBGIT2_OBJECTS ${LIBGIT2_OBJECTS} PARENT_SCOPE)
  set(LIBGIT2_DEPENDENCY_INCLUDES ${LIBGIT2_DEPENDENCY_INCLUDES} PARENT_SCOPE)
  set(LIBGIT2_DEPENDENCY_OBJECTS ${LIBGIT2_DEPENDENCY_OBJECTS} PARENT_SCOPE)
  set(LIBGIT2_SYSTEM_INCLUDES ${LIBGIT2_SYSTEM_INCLUDES} PARENT_SCOPE)
  set(LIBGIT2_SYSTEM_LIBS ${LIBGIT2_SYSTEM_LIBS} PARENT_SCOPE)
  

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