| # 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_OPTIONS - List of options passed to nanopb. |
| # |
| # NANOPB_DEPENDS - List of files to be used as dependencies |
| # for the generated source and header files. These |
| # files are not directly passed as options to |
| # nanopb but rather their directories. |
| # |
| # NANOPB_GENERATE_CPP_APPEND_PATH - By default -I will be passed to protoc |
| # for each directory where a proto file is referenced. |
| # This causes all output files to go directly |
| # under build directory, instead of mirroring |
| # relative paths of source directories. |
| # Set to FALSE if you want to disable this behaviour. |
| # PROTOC_OPTIONS - Pass options to protoc executable |
| # |
| # 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) |
| # NANOPB_GENERATE_CPP(SRCS HDRS [RELPATH <root-path-of-proto-files>] |
| # <proto-files>...) |
| # SRCS = Variable to define with autogenerated source files |
| # HDRS = Variable to define with autogenerated header files |
| # If you want to use relative paths in your import statements use the RELPATH |
| # option. The argument to RELPATH should be the directory that all the |
| # imports will be relative to. |
| # When RELPATH is not specified then all proto files can be imported without |
| # a path. |
| # |
| # |
| # ==================================================================== |
| # Example: |
| # |
| # set(NANOPB_SRC_ROOT_FOLDER "/path/to/nanopb") |
| # set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${NANOPB_SRC_ROOT_FOLDER}/extra) |
| # find_package( Nanopb REQUIRED ) |
| # include_directories(${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}) |
| # |
| # Example with RELPATH: |
| # Assume we have a layout like: |
| # .../CMakeLists.txt |
| # .../bar.cc |
| # .../proto/ |
| # .../proto/foo.proto (Which contains: import "sub/bar.proto"; ) |
| # .../proto/sub/bar.proto |
| # Everything would be the same as the previous example, but the call to |
| # NANOPB_GENERATE_CPP would change to: |
| # |
| # NANOPB_GENERATE_CPP(PROTO_SRCS PROTO_HDRS RELPATH proto |
| # proto/foo.proto proto/sub/bar.proto) |
| # |
| # ==================================================================== |
| |
| #============================================================================= |
| # Copyright 2009 Kitware, Inc. |
| # Copyright 2009-2011 Philip Lowman <philip@yhbt.com> |
| # 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) |
| cmake_parse_arguments(NANOPB_GENERATE_CPP "" "RELPATH" "" ${ARGN}) |
| if(NOT NANOPB_GENERATE_CPP_UNPARSED_ARGUMENTS) |
| return() |
| endif() |
| |
| if(NANOPB_GENERATE_CPP_APPEND_PATH) |
| # Create an include path for each file specified |
| foreach(FIL ${NANOPB_GENERATE_CPP_UNPARSED_ARGUMENTS}) |
| get_filename_component(ABS_FIL ${FIL} ABSOLUTE) |
| get_filename_component(ABS_PATH ${ABS_FIL} PATH) |
| list(APPEND _nanopb_include_path "-I${ABS_PATH}") |
| endforeach() |
| else() |
| set(_nanopb_include_path "-I${CMAKE_CURRENT_SOURCE_DIR}") |
| endif() |
| |
| if(NANOPB_GENERATE_CPP_RELPATH) |
| list(APPEND _nanopb_include_path "-I${NANOPB_GENERATE_CPP_RELPATH}") |
| endif() |
| |
| if(DEFINED NANOPB_IMPORT_DIRS) |
| foreach(DIR ${NANOPB_IMPORT_DIRS}) |
| get_filename_component(ABS_PATH ${DIR} ABSOLUTE) |
| list(APPEND _nanopb_include_path "-I${ABS_PATH}") |
| endforeach() |
| endif() |
| |
| list(REMOVE_DUPLICATES _nanopb_include_path) |
| |
| set(GENERATOR_PATH ${CMAKE_CURRENT_BINARY_DIR}/nanopb/generator) |
| |
| set(NANOPB_GENERATOR_EXECUTABLE ${GENERATOR_PATH}/nanopb_generator.py) |
| if (CMAKE_HOST_WIN32) |
| set(NANOPB_GENERATOR_PLUGIN ${GENERATOR_PATH}/protoc-gen-nanopb.bat) |
| else() |
| set(NANOPB_GENERATOR_PLUGIN ${GENERATOR_PATH}/protoc-gen-nanopb) |
| endif() |
| |
| set(GENERATOR_CORE_DIR ${GENERATOR_PATH}/proto) |
| set(GENERATOR_CORE_SRC |
| ${GENERATOR_CORE_DIR}/nanopb.proto) |
| |
| # Treat the source directory 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() |
| |
| if(NANOPB_GENERATE_CPP_RELPATH) |
| get_filename_component(ABS_ROOT ${NANOPB_GENERATE_CPP_RELPATH} ABSOLUTE) |
| endif() |
| foreach(FIL ${NANOPB_GENERATE_CPP_UNPARSED_ARGUMENTS}) |
| get_filename_component(ABS_FIL ${FIL} ABSOLUTE) |
| get_filename_component(FIL_WE ${FIL} NAME_WLE) |
| get_filename_component(FIL_DIR ${ABS_FIL} PATH) |
| set(FIL_PATH_REL) |
| if(ABS_ROOT) |
| # Check that the file is under the given "RELPATH" |
| string(FIND ${ABS_FIL} ${ABS_ROOT} LOC) |
| if (${LOC} EQUAL 0) |
| string(REPLACE "${ABS_ROOT}/" "" FIL_REL ${ABS_FIL}) |
| get_filename_component(FIL_PATH_REL ${FIL_REL} PATH) |
| file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/${FIL_PATH_REL}) |
| endif() |
| endif() |
| if(NOT FIL_PATH_REL) |
| set(FIL_PATH_REL ".") |
| endif() |
| |
| list(APPEND ${SRCS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_PATH_REL}/${FIL_WE}.pb.c") |
| list(APPEND ${HDRS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_PATH_REL}/${FIL_WE}.pb.h") |
| |
| set(NANOPB_PLUGIN_OPTIONS) |
| set(NANOPB_OPTIONS_DIRS) |
| |
| # If there an options file in the same working directory, set it as a dependency |
| get_filename_component(ABS_OPT_FIL ${FIL_DIR}/${FIL_WE}.options ABSOLUTE) |
| if(EXISTS ${ABS_OPT_FIL}) |
| # Get directory as lookups for dependency options fail if an options |
| # file is used. The options is still set as a dependency of the |
| # generated source and header. |
| get_filename_component(options_dir ${ABS_OPT_FIL} DIRECTORY) |
| list(APPEND NANOPB_OPTIONS_DIRS ${options_dir}) |
| else() |
| set(ABS_OPT_FIL) |
| endif() |
| |
| # If the dependencies are options files, we need to pass the directories |
| # as arguments to nanopb |
| foreach(depends_file ${NANOPB_DEPENDS}) |
| get_filename_component(ext ${depends_file} EXT) |
| if(ext STREQUAL ".options") |
| get_filename_component(depends_dir ${depends_file} DIRECTORY) |
| list(APPEND NANOPB_OPTIONS_DIRS ${depends_dir}) |
| endif() |
| endforeach() |
| |
| if(NANOPB_OPTIONS_DIRS) |
| list(REMOVE_DUPLICATES NANOPB_OPTIONS_DIRS) |
| endif() |
| |
| foreach(options_path ${NANOPB_OPTIONS_DIRS}) |
| set(NANOPB_PLUGIN_OPTIONS "${NANOPB_PLUGIN_OPTIONS} -I${options_path}") |
| endforeach() |
| |
| if(NANOPB_OPTIONS) |
| set(NANOPB_PLUGIN_OPTIONS "${NANOPB_PLUGIN_OPTIONS} ${NANOPB_OPTIONS}") |
| endif() |
| |
| # based on the version of protoc it might be necessary to add "/${FIL_PATH_REL}" currently dealt with in #516 |
| set(NANOPB_OUT "${CMAKE_CURRENT_BINARY_DIR}") |
| |
| # We need to pass the path to the option files to the nanopb plugin. There are two ways to do it. |
| # - An older hacky one using ':' as option separator in protoc args preventing the ':' to be used in path. |
| # - Or a newer one, using --nanopb_opt which requires a version of protoc >= 3.6 |
| # Since nanopb 0.4.6, --nanopb_opt is the default. |
| if(DEFINED NANOPB_PROTOC_OLDER_THAN_3_6_0) |
| set(NANOPB_OPT_STRING "--nanopb_out=${NANOPB_PLUGIN_OPTIONS}:${NANOPB_OUT}") |
| else() |
| set(NANOPB_OPT_STRING "--nanopb_opt=${NANOPB_PLUGIN_OPTIONS}" "--nanopb_out=${NANOPB_OUT}") |
| endif() |
| |
| add_custom_command( |
| OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${FIL_PATH_REL}/${FIL_WE}.pb.c" |
| "${CMAKE_CURRENT_BINARY_DIR}/${FIL_PATH_REL}/${FIL_WE}.pb.h" |
| COMMAND ${PROTOBUF_PROTOC_EXECUTABLE} |
| ARGS -I${GENERATOR_PATH} -I${GENERATOR_CORE_DIR} |
| -I${CMAKE_CURRENT_BINARY_DIR} ${_nanopb_include_path} |
| --plugin=protoc-gen-nanopb=${NANOPB_GENERATOR_PLUGIN} |
| ${NANOPB_OPT_STRING} |
| ${PROTOC_OPTIONS} |
| ${ABS_FIL} |
| DEPENDS ${ABS_FIL} ${GENERATOR_CORE_PYTHON_SRC} |
| ${ABS_OPT_FIL} ${NANOPB_DEPENDS} |
| COMMENT "Running C++ protocol buffer compiler using nanopb plugin on ${FIL}" |
| VERBATIM ) |
| |
| endforeach() |
| |
| set_source_files_properties(${${SRCS}} ${${HDRS}} PROPERTIES GENERATED TRUE) |
| |
| if(NOT DEFINED NANOPB_GENERATE_CPP_STANDALONE) |
| set(NANOPB_GENERATE_CPP_STANDALONE TRUE) |
| endif() |
| |
| if (NANOPB_GENERATE_CPP_STANDALONE) |
| set(${SRCS} ${${SRCS}} ${NANOPB_SRCS} PARENT_SCOPE) |
| set(${HDRS} ${${HDRS}} ${NANOPB_HDRS} PARENT_SCOPE) |
| else() |
| set(${SRCS} ${${SRCS}} PARENT_SCOPE) |
| set(${HDRS} ${${HDRS}} PARENT_SCOPE) |
| endif() |
| 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} |
| NO_CMAKE_FIND_ROOT_PATH |
| ) |
| 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} ${NANOPB_INCLUDE_DIRS} NO_CMAKE_FIND_ROOT_PATH) |
| list(APPEND NANOPB_SRCS "${${FIL}__nano_pb_file}") |
| mark_as_advanced(${FIL}__nano_pb_file) |
| endforeach() |
| |
| foreach(FIL ${_nanopb_hdrs}) |
| find_file(${FIL}__nano_pb_file NAMES ${FIL} PATHS ${NANOPB_INCLUDE_DIRS} NO_CMAKE_FIND_ROOT_PATH) |
| mark_as_advanced(${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 |
| ${NANOPB_SRC_ROOT_FOLDER}/generator-bin |
| ${NANOPB_SRC_ROOT_FOLDER}/generator |
| ) |
| 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 |
| NO_CMAKE_FIND_ROOT_PATH |
| ) |
| mark_as_advanced(NANOPB_GENERATOR_SOURCE_DIR) |
| |
| include(FindPackageHandleStandardArgs) |
| find_package_handle_standard_args(Nanopb DEFAULT_MSG |
| NANOPB_INCLUDE_DIRS |
| NANOPB_SRCS NANOPB_HDRS |
| NANOPB_GENERATOR_SOURCE_DIR |
| PROTOBUF_PROTOC_EXECUTABLE |
| ) |