thodg/libgit2/cmake/SelectHashes.cmake

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• Hash : bc02bcd9
  Author :
  Date : 2020-04-03T19:51:22
  

  cmake: move modules into the "cmake/" top level dir
  
  Our custom CMake module currently live in "cmake/Modules". As the
  "cmake/" directory doesn't contain anything except the "Modules"
  directory, it doesn't really make sense to have the additional
  intermediate directory. So let's instead move the modules one level up
  into the "cmake/" top level directory.
  

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• cmake/SelectHashes.cmake

• # Select a hash backend
  
  INCLUDE(SanitizeBool)
  
  # USE_SHA1=CollisionDetection(ON)/HTTPS/Generic/OFF
  
  SanitizeBool(USE_SHA1)
  IF(USE_SHA1 STREQUAL ON)
  	SET(USE_SHA1 "CollisionDetection")
  ELSEIF(USE_SHA1 STREQUAL "HTTPS")
  	IF(USE_HTTPS STREQUAL "SecureTransport")
  		SET(USE_SHA1 "CommonCrypto")
  	ELSEIF(USE_HTTPS STREQUAL "WinHTTP")
  		SET(USE_SHA1 "Win32")
  	ELSEIF(USE_HTTPS)
  		SET(USE_SHA1 ${USE_HTTPS})
  	ELSE()
  		SET(USE_SHA1 "CollisionDetection")
  	ENDIF()
  ENDIF()
  
  IF(USE_SHA1 STREQUAL "CollisionDetection")
  	SET(GIT_SHA1_COLLISIONDETECT 1)
  	ADD_DEFINITIONS(-DSHA1DC_NO_STANDARD_INCLUDES=1)
  	ADD_DEFINITIONS(-DSHA1DC_CUSTOM_INCLUDE_SHA1_C=\"common.h\")
  	ADD_DEFINITIONS(-DSHA1DC_CUSTOM_INCLUDE_UBC_CHECK_C=\"common.h\")
  	FILE(GLOB SRC_SHA1 hash/sha1/collisiondetect.* hash/sha1/sha1dc/*)
  ELSEIF(USE_SHA1 STREQUAL "OpenSSL")
  	# OPENSSL_FOUND should already be set, we're checking USE_HTTPS
  
  	SET(GIT_SHA1_OPENSSL 1)
  	IF(CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
  		LIST(APPEND LIBGIT2_PC_LIBS "-lssl")
  	ELSE()
  		LIST(APPEND LIBGIT2_PC_REQUIRES "openssl")
  	ENDIF()
  	FILE(GLOB SRC_SHA1 hash/sha1/openssl.*)
  ELSEIF(USE_SHA1 STREQUAL "CommonCrypto")
  	SET(GIT_SHA1_COMMON_CRYPTO 1)
  	FILE(GLOB SRC_SHA1 hash/sha1/common_crypto.*)
  ELSEIF(USE_SHA1 STREQUAL "mbedTLS")
  	SET(GIT_SHA1_MBEDTLS 1)
  	FILE(GLOB SRC_SHA1 hash/sha1/mbedtls.*)
  	LIST(APPEND LIBGIT2_SYSTEM_INCLUDES ${MBEDTLS_INCLUDE_DIR})
  	LIST(APPEND LIBGIT2_LIBS ${MBEDTLS_LIBRARIES})
  	# mbedTLS has no pkgconfig file, hence we can't require it
  	# https://github.com/ARMmbed/mbedtls/issues/228
  	# For now, pass its link flags as our own
  	LIST(APPEND LIBGIT2_PC_LIBS ${MBEDTLS_LIBRARIES})
  ELSEIF(USE_SHA1 STREQUAL "Win32")
  	SET(GIT_SHA1_WIN32 1)
  	FILE(GLOB SRC_SHA1 hash/sha1/win32.*)
  ELSEIF(USE_SHA1 STREQUAL "Generic")
  	FILE(GLOB SRC_SHA1 hash/sha1/generic.*)
  ELSE()
  	MESSAGE(FATAL_ERROR "Asked for unknown SHA1 backend: ${USE_SHA1}")
  ENDIF()
  
  list(SORT SRC_SHA1)
  
  ADD_FEATURE_INFO(SHA ON "using ${USE_SHA1}")
  

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