Added CMake file for use in projects linking against nanopb.
This commit is contained in:
Pavel Ilin
committed by
Petteri Aimonen
Petteri Aimonen
parent
5442e690f6
commit
57e81ca73b
224
cmake/FindNanopb.cmake
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224
cmake/FindNanopb.cmake
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# Locate and configure the nanopb library.
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#
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# The following varialbes have to be set:
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#
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# NANOPB_SRC_ROOT_FOLDER - Path to nanopb source folder
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#
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# The following variables can be set and are optional:
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#
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#
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# PROTOBUF_SRC_ROOT_FOLDER - When compiling with MSVC, if this cache variable is set
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# the protobuf-default VS project build locations
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# (vsprojects/Debug & vsprojects/Release) will be searched
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# for libraries and binaries.
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#
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# NANOPB_IMPORT_DIRS - List of additional directories to be searched for
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# imported .proto files.
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#
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# NANOPB_GENERATE_CPP_APPEND_PATH - By default -I will be passed to protoc
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# for each directory where a proto file is referenced.
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# Set to FALSE if you want to disable this behaviour.
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#
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# Defines the following variables:
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#
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# NANOPB_FOUND - Found the nanopb library (source&header files, generator tool, protoc compiler tool)
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# NANOPB_INCLUDE_DIRS - Include directories for Google Protocol Buffers
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#
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# The following cache variables are also available to set or use:
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# NANOPB_GENERATOR_EXECUTABLE - The nanopb generator
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# PROTOBUF_PROTOC_EXECUTABLE - The protoc compiler
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#
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# ====================================================================
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#
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# NANOPB_GENERATE_CPP (public function)
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# SRCS = Variable to define with autogenerated
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# source files
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# HDRS = Variable to define with autogenerated
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# header files
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# ARGN = proto files
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#
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# ====================================================================
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# Example:
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#
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# set(NANOPB_SRC_ROOT_FOLDER "/path/to/nanopb")
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# set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${NANOPB_SRC_ROOT_FOLDER}/cmake)
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# find_package( Nanopb REQUIRED )
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# include_directories(${NANOPB_INCLUDE_DIRS})
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#
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# NANOPB_GENERATE_CPP(PROTO_SRCS PROTO_HDRS foo.proto)
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#
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# include_directories(${CMAKE_CURRENT_BINARY_DIR})
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# add_executable(bar bar.cc ${PROTO_SRCS} ${PROTO_HDRS})
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#
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# ====================================================================
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#=============================================================================
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# Copyright 2009 Kitware, Inc.
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# Copyright 2009-2011 Philip Lowman <philip@yhbt.com>
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# Copyright 2008 Esben Mose Hansen, Ange Optimization ApS
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# * Neither the names of Kitware, Inc., the Insight Software Consortium,
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# nor the names of their contributors may be used to endorse or promote
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# products derived from this software without specific prior written
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# permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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#=============================================================================
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#
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# Changes
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# 2013.01.31 - Pavlo Ilin - used Modules/FindProtobuf.cmake from cmake 2.8.10 to
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# write FindNanopb.cmake
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#
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#=============================================================================
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function(NANOPB_GENERATE_CPP SRCS HDRS)
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if(NOT ARGN)
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return()
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endif()
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if(NANOPB_GENERATE_CPP_APPEND_PATH)
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# Create an include path for each file specified
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foreach(FIL ${ARGN})
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get_filename_component(ABS_FIL ${FIL} ABSOLUTE)
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get_filename_component(ABS_PATH ${ABS_FIL} PATH)
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list(FIND _nanobp_include_path ${ABS_PATH} _contains_already)
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if(${_contains_already} EQUAL -1)
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list(APPEND _nanobp_include_path -I ${ABS_PATH})
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endif()
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endforeach()
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else()
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set(_nanobp_include_path -I ${CMAKE_CURRENT_SOURCE_DIR})
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endif()
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if(DEFINED NANOPB_IMPORT_DIRS)
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foreach(DIR ${NANOPB_IMPORT_DIRS})
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get_filename_component(ABS_PATH ${DIR} ABSOLUTE)
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list(FIND _nanobp_include_path ${ABS_PATH} _contains_already)
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if(${_contains_already} EQUAL -1)
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list(APPEND _nanobp_include_path -I ${ABS_PATH})
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endif()
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endforeach()
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endif()
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set(${SRCS})
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set(${HDRS})
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get_filename_component(GENERATOR_PATH ${NANOPB_GENERATOR_EXECUTABLE} PATH)
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foreach(FIL ${ARGN})
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get_filename_component(ABS_FIL ${FIL} ABSOLUTE)
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get_filename_component(FIL_WE ${FIL} NAME_WE)
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list(APPEND ${SRCS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.c")
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list(APPEND ${HDRS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.h")
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add_custom_command(
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OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb"
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COMMAND ${PROTOBUF_PROTOC_EXECUTABLE}
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ARGS -I${GENERATOR_PATH} -I${CMAKE_CURRENT_BINARY_DIR} ${_nanobp_include_path} -o${FIL_WE}.pb ${ABS_FIL}
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DEPENDS ${ABS_FIL}
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COMMENT "Running C++ protocol buffer compiler on ${FIL}"
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VERBATIM )
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add_custom_command(
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OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.c"
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"${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.h"
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COMMAND python
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ARGS ${NANOPB_GENERATOR_EXECUTABLE} ${FIL_WE}.pb
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DEPENDS ${FIL_WE}.pb
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COMMENT "Running nanopb generator on ${FIL_WE}.pb"
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VERBATIM )
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endforeach()
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set_source_files_properties(${${SRCS}} ${${HDRS}} PROPERTIES GENERATED TRUE)
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set(${SRCS} ${${SRCS}} ${NANOPB_SRCS} PARENT_SCOPE)
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set(${HDRS} ${${HDRS}} ${NANOPB_HDRS} PARENT_SCOPE)
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endfunction()
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#
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# Main.
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#
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# By default have NANOPB_GENERATE_CPP macro pass -I to protoc
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# for each directory where a proto file is referenced.
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if(NOT DEFINED NANOPB_GENERATE_CPP_APPEND_PATH)
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set(NANOPB_GENERATE_CPP_APPEND_PATH TRUE)
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endif()
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# Find the include directory
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find_path(NANOPB_INCLUDE_DIRS
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pb.h
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PATHS ${NANOPB_SRC_ROOT_FOLDER}
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)
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mark_as_advanced(NANOPB_INCLUDE_DIRS)
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# Find nanopb source files
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set(NANOPB_SRCS)
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set(NANOPB_HDRS)
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list(APPEND _nanopb_srcs pb_decode.c pb_encode.c)
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list(APPEND _nanopb_hdrs pb_decode.h pb_encode.h pb.h)
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foreach(FIL ${_nanopb_srcs})
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find_file(${FIL}__nano_pb_file NAMES ${FIL} PATHS ${NANOPB_SRC_ROOT_FOLDER} ${NANOPB_INCLUDE_DIRS})
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list(APPEND NANOPB_SRCS "${${FIL}__nano_pb_file}")
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mark_as_advanced(${FIL}__nano_pb_file)
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endforeach()
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foreach(FIL ${_nanopb_hdrs})
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find_file(${FIL}__nano_pb_file NAMES ${FIL} PATHS ${NANOPB_INCLUDE_DIRS})
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mark_as_advanced(${FIL}__nano_pb_file)
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list(APPEND NANOPB_HDRS "${${FIL}__nano_pb_file}")
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endforeach()
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# Find the protoc Executable
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find_program(PROTOBUF_PROTOC_EXECUTABLE
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NAMES protoc
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DOC "The Google Protocol Buffers Compiler"
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PATHS
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${PROTOBUF_SRC_ROOT_FOLDER}/vsprojects/Release
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${PROTOBUF_SRC_ROOT_FOLDER}/vsprojects/Debug
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)
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mark_as_advanced(PROTOBUF_PROTOC_EXECUTABLE)
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# Find nanopb generator
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find_file(NANOPB_GENERATOR_EXECUTABLE
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NAMES nanopb_generator.py
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DOC "nanopb generator"
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PATHS
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${NANOPB_SRC_ROOT_FOLDER}/generator
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)
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mark_as_advanced(NANOPB_GENERATOR_EXECUTABLE)
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include(FindPackageHandleStandardArgs)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(NANOPB DEFAULT_MSG
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NANOPB_INCLUDE_DIRS
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NANOPB_SRCS NANOPB_HDRS
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NANOPB_GENERATOR_EXECUTABLE
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PROTOBUF_PROTOC_EXECUTABLE
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)
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