1 # This is an example script for use with CMake projects for locating and configuring 2 # the nanopb library. 3 # 4 # The following varialbes have to be set: 5 # 6 # NANOPB_SRC_ROOT_FOLDER - Path to nanopb source folder 7 # 8 # The following variables can be set and are optional: 9 # 10 # 11 # PROTOBUF_SRC_ROOT_FOLDER - When compiling with MSVC, if this cache variable is set 12 # the protobuf-default VS project build locations 13 # (vsprojects/Debug & vsprojects/Release) will be searched 14 # for libraries and binaries. 15 # 16 # NANOPB_IMPORT_DIRS - List of additional directories to be searched for 17 # imported .proto files. 18 # 19 # NANOPB_GENERATE_CPP_APPEND_PATH - By default -I will be passed to protoc 20 # for each directory where a proto file is referenced. 21 # Set to FALSE if you want to disable this behaviour. 22 # 23 # Defines the following variables: 24 # 25 # NANOPB_FOUND - Found the nanopb library (source&header files, generator tool, protoc compiler tool) 26 # NANOPB_INCLUDE_DIRS - Include directories for Google Protocol Buffers 27 # 28 # The following cache variables are also available to set or use: 29 # NANOPB_GENERATOR_EXECUTABLE - The nanopb generator 30 # PROTOBUF_PROTOC_EXECUTABLE - The protoc compiler 31 # 32 # ==================================================================== 33 # 34 # NANOPB_GENERATE_CPP (public function) 35 # SRCS = Variable to define with autogenerated 36 # source files 37 # HDRS = Variable to define with autogenerated 38 # header files 39 # ARGN = proto files 40 # 41 # ==================================================================== 42 # Example: 43 # 44 # set(NANOPB_SRC_ROOT_FOLDER "/path/to/nanopb") 45 # set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${NANOPB_SRC_ROOT_FOLDER}/cmake) 46 # find_package( Nanopb REQUIRED ) 47 # include_directories(${NANOPB_INCLUDE_DIRS}) 48 # 49 # NANOPB_GENERATE_CPP(PROTO_SRCS PROTO_HDRS foo.proto) 50 # 51 # include_directories(${CMAKE_CURRENT_BINARY_DIR}) 52 # add_executable(bar bar.cc ${PROTO_SRCS} ${PROTO_HDRS}) 53 # 54 # ==================================================================== 55 56 #============================================================================= 57 # Copyright 2009 Kitware, Inc. 58 # Copyright 2009-2011 Philip Lowman <philip (a] yhbt.com> 59 # Copyright 2008 Esben Mose Hansen, Ange Optimization ApS 60 # 61 # Redistribution and use in source and binary forms, with or without 62 # modification, are permitted provided that the following conditions 63 # are met: 64 # 65 # * Redistributions of source code must retain the above copyright 66 # notice, this list of conditions and the following disclaimer. 67 # 68 # * Redistributions in binary form must reproduce the above copyright 69 # notice, this list of conditions and the following disclaimer in the 70 # documentation and/or other materials provided with the distribution. 71 # 72 # * Neither the names of Kitware, Inc., the Insight Software Consortium, 73 # nor the names of their contributors may be used to endorse or promote 74 # products derived from this software without specific prior written 75 # permission. 76 # 77 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 78 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 79 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 80 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 81 # HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 82 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 83 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 84 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 85 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 86 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 87 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 88 # 89 #============================================================================= 90 # 91 # Changes 92 # 2013.01.31 - Pavlo Ilin - used Modules/FindProtobuf.cmake from cmake 2.8.10 to 93 # write FindNanopb.cmake 94 # 95 #============================================================================= 96 97 98 function(NANOPB_GENERATE_CPP SRCS HDRS) 99 if(NOT ARGN) 100 return() 101 endif() 102 103 if(NANOPB_GENERATE_CPP_APPEND_PATH) 104 # Create an include path for each file specified 105 foreach(FIL ${ARGN}) 106 get_filename_component(ABS_FIL ${FIL} ABSOLUTE) 107 get_filename_component(ABS_PATH ${ABS_FIL} PATH) 108 109 list(FIND _nanobp_include_path ${ABS_PATH} _contains_already) 110 if(${_contains_already} EQUAL -1) 111 list(APPEND _nanobp_include_path -I ${ABS_PATH}) 112 endif() 113 endforeach() 114 else() 115 set(_nanobp_include_path -I ${CMAKE_CURRENT_SOURCE_DIR}) 116 endif() 117 118 if(DEFINED NANOPB_IMPORT_DIRS) 119 foreach(DIR ${NANOPB_IMPORT_DIRS}) 120 get_filename_component(ABS_PATH ${DIR} ABSOLUTE) 121 list(FIND _nanobp_include_path ${ABS_PATH} _contains_already) 122 if(${_contains_already} EQUAL -1) 123 list(APPEND _nanobp_include_path -I ${ABS_PATH}) 124 endif() 125 endforeach() 126 endif() 127 128 set(${SRCS}) 129 set(${HDRS}) 130 get_filename_component(GENERATOR_PATH ${NANOPB_GENERATOR_EXECUTABLE} PATH) 131 132 foreach(FIL ${ARGN}) 133 get_filename_component(ABS_FIL ${FIL} ABSOLUTE) 134 get_filename_component(FIL_WE ${FIL} NAME_WE) 135 136 list(APPEND ${SRCS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.c") 137 list(APPEND ${HDRS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.h") 138 139 add_custom_command( 140 OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb" 141 COMMAND ${PROTOBUF_PROTOC_EXECUTABLE} 142 ARGS -I${GENERATOR_PATH} -I${CMAKE_CURRENT_BINARY_DIR} ${_nanobp_include_path} -o${FIL_WE}.pb ${ABS_FIL} 143 DEPENDS ${ABS_FIL} 144 COMMENT "Running C++ protocol buffer compiler on ${FIL}" 145 VERBATIM ) 146 147 add_custom_command( 148 OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.c" 149 "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.h" 150 COMMAND python 151 ARGS ${NANOPB_GENERATOR_EXECUTABLE} ${FIL_WE}.pb 152 DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb" 153 COMMENT "Running nanopb generator on ${FIL_WE}.pb" 154 VERBATIM ) 155 endforeach() 156 157 set_source_files_properties(${${SRCS}} ${${HDRS}} PROPERTIES GENERATED TRUE) 158 set(${SRCS} ${${SRCS}} ${NANOPB_SRCS} PARENT_SCOPE) 159 set(${HDRS} ${${HDRS}} ${NANOPB_HDRS} PARENT_SCOPE) 160 161 endfunction() 162 163 164 165 # 166 # Main. 167 # 168 169 # By default have NANOPB_GENERATE_CPP macro pass -I to protoc 170 # for each directory where a proto file is referenced. 171 if(NOT DEFINED NANOPB_GENERATE_CPP_APPEND_PATH) 172 set(NANOPB_GENERATE_CPP_APPEND_PATH TRUE) 173 endif() 174 175 # Find the include directory 176 find_path(NANOPB_INCLUDE_DIRS 177 pb.h 178 PATHS ${NANOPB_SRC_ROOT_FOLDER} 179 ) 180 mark_as_advanced(NANOPB_INCLUDE_DIRS) 181 182 # Find nanopb source files 183 set(NANOPB_SRCS) 184 set(NANOPB_HDRS) 185 list(APPEND _nanopb_srcs pb_decode.c pb_encode.c) 186 list(APPEND _nanopb_hdrs pb_decode.h pb_encode.h pb.h) 187 188 foreach(FIL ${_nanopb_srcs}) 189 find_file(${FIL}__nano_pb_file NAMES ${FIL} PATHS ${NANOPB_SRC_ROOT_FOLDER} ${NANOPB_INCLUDE_DIRS}) 190 list(APPEND NANOPB_SRCS "${${FIL}__nano_pb_file}") 191 mark_as_advanced(${FIL}__nano_pb_file) 192 endforeach() 193 194 foreach(FIL ${_nanopb_hdrs}) 195 find_file(${FIL}__nano_pb_file NAMES ${FIL} PATHS ${NANOPB_INCLUDE_DIRS}) 196 mark_as_advanced(${FIL}__nano_pb_file) 197 list(APPEND NANOPB_HDRS "${${FIL}__nano_pb_file}") 198 endforeach() 199 200 # Find the protoc Executable 201 find_program(PROTOBUF_PROTOC_EXECUTABLE 202 NAMES protoc 203 DOC "The Google Protocol Buffers Compiler" 204 PATHS 205 ${PROTOBUF_SRC_ROOT_FOLDER}/vsprojects/Release 206 ${PROTOBUF_SRC_ROOT_FOLDER}/vsprojects/Debug 207 ) 208 mark_as_advanced(PROTOBUF_PROTOC_EXECUTABLE) 209 210 # Find nanopb generator 211 find_file(NANOPB_GENERATOR_EXECUTABLE 212 NAMES nanopb_generator.py 213 DOC "nanopb generator" 214 PATHS 215 ${NANOPB_SRC_ROOT_FOLDER}/generator 216 ) 217 mark_as_advanced(NANOPB_GENERATOR_EXECUTABLE) 218 219 include(FindPackageHandleStandardArgs) 220 FIND_PACKAGE_HANDLE_STANDARD_ARGS(NANOPB DEFAULT_MSG 221 NANOPB_INCLUDE_DIRS 222 NANOPB_SRCS NANOPB_HDRS 223 NANOPB_GENERATOR_EXECUTABLE 224 PROTOBUF_PROTOC_EXECUTABLE 225 ) 226
