# This is an example script for use with CMake projects for locating and configuring # the nanopb library. # # The following variables can be set and are optional: # # # PROTOBUF_SRC_ROOT_FOLDER - When compiling with MSVC, if this cache variable is set # the protobuf-default VS project build locations # (vsprojects/Debug & vsprojects/Release) will be searched # for libraries and binaries. # # NANOPB_IMPORT_DIRS - List of additional directories to be searched for # imported .proto files. # # NANOPB_GENERATE_CPP_APPEND_PATH - By default -I will be passed to protoc # for each directory where a proto file is referenced. # Set to FALSE if you want to disable this behaviour. # # Defines the following variables: # # NANOPB_FOUND - Found the nanopb library (source&header files, generator tool, protoc compiler tool) # NANOPB_INCLUDE_DIRS - Include directories for Google Protocol Buffers # # The following cache variables are also available to set or use: # PROTOBUF_PROTOC_EXECUTABLE - The protoc compiler # NANOPB_GENERATOR_SOURCE_DIR - The nanopb generator source # # ==================================================================== # # NANOPB_GENERATE_CPP (public function) # SRCS = Variable to define with autogenerated # source files # HDRS = Variable to define with autogenerated # header files # ARGN = proto files # # ==================================================================== # Example: # # set(NANOPB_SRC_ROOT_FOLDER "/path/to/nanopb") # set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${NANOPB_SRC_ROOT_FOLDER}/cmake) # find_package( Nanopb REQUIRED ) # include_directories(${NANOPB_INCLUDE_DIRS}) # # NANOPB_GENERATE_CPP(PROTO_SRCS PROTO_HDRS foo.proto) # # include_directories(${CMAKE_CURRENT_BINARY_DIR}) # add_executable(bar bar.cc ${PROTO_SRCS} ${PROTO_HDRS}) # # ==================================================================== #============================================================================= # Copyright 2009 Kitware, Inc. # Copyright 2009-2011 Philip Lowman # Copyright 2008 Esben Mose Hansen, Ange Optimization ApS # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # # * Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # # * Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # * Neither the names of Kitware, Inc., the Insight Software Consortium, # nor the names of their contributors may be used to endorse or promote # products derived from this software without specific prior written # permission. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT # HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # #============================================================================= # # Changes # 2013.01.31 - Pavlo Ilin - used Modules/FindProtobuf.cmake from cmake 2.8.10 to # write FindNanopb.cmake # #============================================================================= function(NANOPB_GENERATE_CPP SRCS HDRS) if(NOT ARGN) return() endif() if(NANOPB_GENERATE_CPP_APPEND_PATH) # Create an include path for each file specified foreach(FIL ${ARGN}) get_filename_component(ABS_FIL ${FIL} ABSOLUTE) get_filename_component(ABS_PATH ${ABS_FIL} PATH) list(FIND _nanobp_include_path ${ABS_PATH} _contains_already) if(${_contains_already} EQUAL -1) list(APPEND _nanobp_include_path -I ${ABS_PATH}) endif() endforeach() else() set(_nanobp_include_path -I ${CMAKE_CURRENT_SOURCE_DIR}) endif() if(DEFINED NANOPB_IMPORT_DIRS) foreach(DIR ${NANOPB_IMPORT_DIRS}) get_filename_component(ABS_PATH ${DIR} ABSOLUTE) list(FIND _nanobp_include_path ${ABS_PATH} _contains_already) if(${_contains_already} EQUAL -1) list(APPEND _nanobp_include_path -I ${ABS_PATH}) endif() endforeach() endif() set(${SRCS}) set(${HDRS}) set(GENERATOR_PATH ${CMAKE_BINARY_DIR}/nanopb/generator) set(NANOPB_GENERATOR_EXECUTABLE ${GENERATOR_PATH}/nanopb_generator.py) set(GENERATOR_CORE_DIR ${GENERATOR_PATH}/proto) set(GENERATOR_CORE_SRC ${GENERATOR_CORE_DIR}/nanopb.proto ${GENERATOR_CORE_DIR}/plugin.proto) # Treat the source diretory as immutable. # # Copy the generator directory to the build directory before # compiling python and proto files. Fixes issues when using the # same build directory with different python/protobuf versions # as the binary build directory is discarded across builds. # add_custom_command( OUTPUT ${NANOPB_GENERATOR_EXECUTABLE} ${GENERATOR_CORE_SRC} COMMAND ${CMAKE_COMMAND} -E copy_directory ARGS ${NANOPB_GENERATOR_SOURCE_DIR} ${GENERATOR_PATH} VERBATIM) set(GENERATOR_CORE_PYTHON_SRC) foreach(FIL ${GENERATOR_CORE_SRC}) get_filename_component(ABS_FIL ${FIL} ABSOLUTE) get_filename_component(FIL_WE ${FIL} NAME_WE) set(output "${GENERATOR_CORE_DIR}/${FIL_WE}_pb2.py") set(GENERATOR_CORE_PYTHON_SRC ${GENERATOR_CORE_PYTHON_SRC} ${output}) add_custom_command( OUTPUT ${output} COMMAND ${PROTOBUF_PROTOC_EXECUTABLE} ARGS -I${GENERATOR_PATH}/proto --python_out=${GENERATOR_CORE_DIR} ${ABS_FIL} DEPENDS ${ABS_FIL} VERBATIM) endforeach() foreach(FIL ${ARGN}) get_filename_component(ABS_FIL ${FIL} ABSOLUTE) get_filename_component(FIL_WE ${FIL} NAME_WE) get_filename_component(FIL_DIR ${FIL} PATH) set(NANOPB_OPTIONS_FILE ${FIL_DIR}/${FIL_WE}.options) set(NANOPB_OPTIONS) if(EXISTS ${NANOPB_OPTIONS_FILE}) set(NANOPB_OPTIONS -f ${NANOPB_OPTIONS_FILE}) endif() list(APPEND ${SRCS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.c") list(APPEND ${HDRS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.h") add_custom_command( OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb" COMMAND ${PROTOBUF_PROTOC_EXECUTABLE} ARGS -I${GENERATOR_PATH} -I${GENERATOR_CORE_DIR} -I${CMAKE_CURRENT_BINARY_DIR} ${_nanobp_include_path} -o${FIL_WE}.pb ${ABS_FIL} DEPENDS ${ABS_FIL} ${GENERATOR_CORE_PYTHON_SRC} COMMENT "Running C++ protocol buffer compiler on ${FIL}" VERBATIM ) add_custom_command( OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.c" "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.h" COMMAND ${PYTHON_EXECUTABLE} ARGS ${NANOPB_GENERATOR_EXECUTABLE} ${FIL_WE}.pb ${NANOPB_OPTIONS} DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb" COMMENT "Running nanopb generator on ${FIL_WE}.pb" VERBATIM ) endforeach() set_source_files_properties(${${SRCS}} ${${HDRS}} PROPERTIES GENERATED TRUE) set(${SRCS} ${${SRCS}} ${NANOPB_SRCS} PARENT_SCOPE) set(${HDRS} ${${HDRS}} ${NANOPB_HDRS} PARENT_SCOPE) endfunction() # # Main. # # By default have NANOPB_GENERATE_CPP macro pass -I to protoc # for each directory where a proto file is referenced. if(NOT DEFINED NANOPB_GENERATE_CPP_APPEND_PATH) set(NANOPB_GENERATE_CPP_APPEND_PATH TRUE) endif() # Make a really good guess regarding location of NANOPB_SRC_ROOT_FOLDER if(NOT DEFINED NANOPB_SRC_ROOT_FOLDER) get_filename_component(NANOPB_SRC_ROOT_FOLDER ${CMAKE_CURRENT_LIST_DIR}/.. ABSOLUTE) endif() # Find the include directory find_path(NANOPB_INCLUDE_DIRS pb.h PATHS ${NANOPB_SRC_ROOT_FOLDER} ) mark_as_advanced(NANOPB_INCLUDE_DIRS) # Find nanopb source files set(NANOPB_SRCS) set(NANOPB_HDRS) list(APPEND _nanopb_srcs pb_decode.c pb_encode.c pb_common.c) list(APPEND _nanopb_hdrs pb_decode.h pb_encode.h pb_common.h pb.h) foreach(FIL ${_nanopb_srcs}) find_file(${FIL}__nano_pb_file NAMES ${FIL} PATHS ${NANOPB_SRC_ROOT_FOLDER} ${NANOPB_INCLUDE_DIRS}) list(APPEND NANOPB_SRCS "${${FIL}__nano_pb_file}") mark_as_advanced(${FIL}__nano_pb_file) endforeach() foreach(FIL ${_nanopb_hdrs}) find_file(${FIL}__nano_pb_file NAMES ${FIL} PATHS ${NANOPB_INCLUDE_DIRS}) mark_as_advanced(${FIL}__nano_pb_file) list(APPEND NANOPB_HDRS "${${FIL}__nano_pb_file}") endforeach() # Find the protoc Executable find_program(PROTOBUF_PROTOC_EXECUTABLE NAMES protoc DOC "The Google Protocol Buffers Compiler" PATHS ${PROTOBUF_SRC_ROOT_FOLDER}/vsprojects/Release ${PROTOBUF_SRC_ROOT_FOLDER}/vsprojects/Debug ) mark_as_advanced(PROTOBUF_PROTOC_EXECUTABLE) # Find nanopb generator source dir find_path(NANOPB_GENERATOR_SOURCE_DIR NAMES nanopb_generator.py DOC "nanopb generator source" PATHS ${NANOPB_SRC_ROOT_FOLDER}/generator ) mark_as_advanced(NANOPB_GENERATOR_SOURCE_DIR) find_package(PythonInterp REQUIRED) include(FindPackageHandleStandardArgs) FIND_PACKAGE_HANDLE_STANDARD_ARGS(NANOPB DEFAULT_MSG NANOPB_INCLUDE_DIRS NANOPB_SRCS NANOPB_HDRS NANOPB_GENERATOR_SOURCE_DIR PROTOBUF_PROTOC_EXECUTABLE )