diff options
Diffstat (limited to 'Modules/FindProtobuf.cmake')
| -rw-r--r-- | Modules/FindProtobuf.cmake | 104 |
1 files changed, 80 insertions, 24 deletions
diff --git a/Modules/FindProtobuf.cmake b/Modules/FindProtobuf.cmake index 2f13b09..95e3b1e 100644 --- a/Modules/FindProtobuf.cmake +++ b/Modules/FindProtobuf.cmake @@ -15,12 +15,16 @@ # ``PROTOBUF_IMPORT_DIRS`` # List of additional directories to be searched for # imported .proto files. +# ``PROTOBUF_DEBUG`` +# Show debug messages. # # Defines the following variables: # # ``PROTOBUF_FOUND`` # Found the Google Protocol Buffers library # (libprotobuf & header files) +# ``PROTOBUF_VERSION`` +# Version of package found. # ``PROTOBUF_INCLUDE_DIRS`` # Include directories for Google Protocol Buffers # ``PROTOBUF_LIBRARIES`` @@ -210,32 +214,33 @@ if(CMAKE_SIZEOF_VOID_P EQUAL 8) set(_PROTOBUF_ARCH_DIR x64/) endif() +include(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake) + # Internal function: search for normal library as well as a debug one # if the debug one is specified also include debug/optimized keywords # in *_LIBRARIES variable function(_protobuf_find_libraries name filename) - find_library(${name}_LIBRARY - NAMES ${filename} - PATHS ${PROTOBUF_SRC_ROOT_FOLDER}/vsprojects/${_PROTOBUF_ARCH_DIR}Release) - mark_as_advanced(${name}_LIBRARY) - - find_library(${name}_LIBRARY_DEBUG - NAMES ${filename} - PATHS ${PROTOBUF_SRC_ROOT_FOLDER}/vsprojects/${_PROTOBUF_ARCH_DIR}Debug) - mark_as_advanced(${name}_LIBRARY_DEBUG) - - if(NOT ${name}_LIBRARY_DEBUG) - # There is no debug library - set(${name}_LIBRARY_DEBUG ${${name}_LIBRARY} PARENT_SCOPE) - set(${name}_LIBRARIES ${${name}_LIBRARY} PARENT_SCOPE) - else() - # There IS a debug library - set(${name}_LIBRARIES - optimized ${${name}_LIBRARY} - debug ${${name}_LIBRARY_DEBUG} - PARENT_SCOPE - ) - endif() + if(${name}_LIBRARIES) + # Use result recorded by a previous call. + return() + elseif(${name}_LIBRARY) + # Honor cache entry used by CMake 3.5 and lower. + set(${name}_LIBRARIES "${${name}_LIBRARY}" PARENT_SCOPE) + else() + find_library(${name}_LIBRARY_RELEASE + NAMES ${filename} + PATHS ${PROTOBUF_SRC_ROOT_FOLDER}/vsprojects/${_PROTOBUF_ARCH_DIR}Release) + mark_as_advanced(${name}_LIBRARY_RELEASE) + + find_library(${name}_LIBRARY_DEBUG + NAMES ${filename} + PATHS ${PROTOBUF_SRC_ROOT_FOLDER}/vsprojects/${_PROTOBUF_ARCH_DIR}Debug) + mark_as_advanced(${name}_LIBRARY_DEBUG) + + select_library_configurations(${name}) + set(${name}_LIBRARY "${${name}_LIBRARY}" PARENT_SCOPE) + set(${name}_LIBRARIES "${${name}_LIBRARIES}" PARENT_SCOPE) + endif() endfunction() # Internal function: find threads library @@ -303,10 +308,61 @@ find_program(PROTOBUF_PROTOC_EXECUTABLE ) mark_as_advanced(PROTOBUF_PROTOC_EXECUTABLE) +if(PROTOBUF_DEBUG) + message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] " + "requested version of Google Protobuf is ${Protobuf_FIND_VERSION}") +endif() + +if(PROTOBUF_INCLUDE_DIR) + set(_PROTOBUF_COMMON_HEADER ${PROTOBUF_INCLUDE_DIR}/google/protobuf/stubs/common.h) + + if(PROTOBUF_DEBUG) + message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] " + "location of common.h: ${_PROTOBUF_COMMON_HEADER}") + endif() + + set(PROTOBUF_VERSION "") + set(PROTOBUF_LIB_VERSION "") + file(STRINGS ${_PROTOBUF_COMMON_HEADER} _PROTOBUF_COMMON_H_CONTENTS REGEX "#define[ \t]+GOOGLE_PROTOBUF_VERSION[ \t]+") + if(_PROTOBUF_COMMON_H_CONTENTS MATCHES "#define[ \t]+GOOGLE_PROTOBUF_VERSION[ \t]+([0-9]+)") + set(PROTOBUF_LIB_VERSION "${CMAKE_MATCH_1}") + endif() + unset(_PROTOBUF_COMMON_H_CONTENTS) + + math(EXPR _PROTOBUF_MAJOR_VERSION "${PROTOBUF_LIB_VERSION} / 1000000") + math(EXPR _PROTOBUF_MINOR_VERSION "${PROTOBUF_LIB_VERSION} / 1000 % 1000") + math(EXPR _PROTOBUF_SUBMINOR_VERSION "${PROTOBUF_LIB_VERSION} % 1000") + set(PROTOBUF_VERSION "${_PROTOBUF_MAJOR_VERSION}.${_PROTOBUF_MINOR_VERSION}.${_PROTOBUF_SUBMINOR_VERSION}") + + if(PROTOBUF_DEBUG) + message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] " + "${_PROTOBUF_COMMON_HEADER} reveals protobuf ${PROTOBUF_VERSION}") + endif() + + # Check Protobuf compiler version to be aligned with libraries version + execute_process(COMMAND ${PROTOBUF_PROTOC_EXECUTABLE} --version + OUTPUT_VARIABLE _PROTOBUF_PROTOC_EXECUTABLE_VERSION) + + if("${_PROTOBUF_PROTOC_EXECUTABLE_VERSION}" MATCHES "libprotoc ([0-9.]+)") + set(_PROTOBUF_PROTOC_EXECUTABLE_VERSION "${CMAKE_MATCH_1}") + endif() + + if(PROTOBUF_DEBUG) + message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] " + "${PROTOBUF_PROTOC_EXECUTABLE} reveals version ${_PROTOBUF_PROTOC_EXECUTABLE_VERSION}") + endif() + + if(NOT "${_PROTOBUF_PROTOC_EXECUTABLE_VERSION}" VERSION_EQUAL "${PROTOBUF_VERSION}") + message(WARNING "Protobuf compiler version ${_PROTOBUF_PROTOC_EXECUTABLE_VERSION}" + " doesn't match library version ${PROTOBUF_VERSION}") + endif() +endif() include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake) -FIND_PACKAGE_HANDLE_STANDARD_ARGS(Protobuf DEFAULT_MSG - PROTOBUF_LIBRARY PROTOBUF_INCLUDE_DIR) +FIND_PACKAGE_HANDLE_STANDARD_ARGS(Protobuf + REQUIRED_VARS PROTOBUF_LIBRARIES PROTOBUF_INCLUDE_DIR + VERSION_VAR PROTOBUF_VERSION +) if(PROTOBUF_FOUND) set(PROTOBUF_INCLUDE_DIRS ${PROTOBUF_INCLUDE_DIR}) |