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Diffstat (limited to 'extra/FindNanopb.cmake')
| -rw-r--r-- | extra/FindNanopb.cmake | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/extra/FindNanopb.cmake b/extra/FindNanopb.cmake new file mode 100644 index 00000000..c804e701 --- /dev/null +++ b/extra/FindNanopb.cmake @@ -0,0 +1,225 @@ +# This is an example script for use with CMake projects for locating and configuring +# the nanopb library. +# +# The following varialbes have to be set: +# +# NANOPB_SRC_ROOT_FOLDER - Path to nanopb source folder +# +# 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: +# NANOPB_GENERATOR_EXECUTABLE - The nanopb generator +# PROTOBUF_PROTOC_EXECUTABLE - The protoc compiler +# +# ==================================================================== +# +# 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 <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) + 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}) + get_filename_component(GENERATOR_PATH ${NANOPB_GENERATOR_EXECUTABLE} PATH) + + foreach(FIL ${ARGN}) + get_filename_component(ABS_FIL ${FIL} ABSOLUTE) + get_filename_component(FIL_WE ${FIL} NAME_WE) + + 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${CMAKE_CURRENT_BINARY_DIR} ${_nanobp_include_path} -o${FIL_WE}.pb ${ABS_FIL} + DEPENDS ${ABS_FIL} + 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 + ARGS ${NANOPB_GENERATOR_EXECUTABLE} ${FIL_WE}.pb + DEPENDS "${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() + +# 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) +list(APPEND _nanopb_hdrs pb_decode.h pb_encode.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 +find_file(NANOPB_GENERATOR_EXECUTABLE + NAMES nanopb_generator.py + DOC "nanopb generator" + PATHS + ${NANOPB_SRC_ROOT_FOLDER}/generator +) +mark_as_advanced(NANOPB_GENERATOR_EXECUTABLE) + +include(FindPackageHandleStandardArgs) +FIND_PACKAGE_HANDLE_STANDARD_ARGS(NANOPB DEFAULT_MSG + NANOPB_INCLUDE_DIRS + NANOPB_SRCS NANOPB_HDRS + NANOPB_GENERATOR_EXECUTABLE + PROTOBUF_PROTOC_EXECUTABLE + ) |