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authorRomain Forlot <romain.forlot@iot.bzh>2017-06-20 10:24:05 +0000
committerRomain Forlot <romain.forlot@iot.bzh>2017-06-20 10:24:05 +0000
commit32e25cbca210a359b09768537b6f443fe90a3070 (patch)
tree3309794c15d8a8f8e9c1c08cad072ee1378813ba /libs/nanopb/extra/FindNanopb.cmake
parent76c43dec62b2e21cd6446360c00d4fe6b437533f (diff)
Separation Generator to a dedicated repo
Change-Id: Id94831651c3266861435272a6e36c7884bef2c45 Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>
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+# 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 <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})
+
+ 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
+ )