diff options
Diffstat (limited to 'extra/FindNanopb.cmake')
| -rw-r--r-- | extra/FindNanopb.cmake | 41 |
1 files changed, 30 insertions, 11 deletions
diff --git a/extra/FindNanopb.cmake b/extra/FindNanopb.cmake index 1fd25334..9afb21d0 100644 --- a/extra/FindNanopb.cmake +++ b/extra/FindNanopb.cmake @@ -1,10 +1,6 @@ # 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: # # @@ -26,8 +22,8 @@ # 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_GENERATOR_SOURCE_DIR - The nanopb generator source # # ==================================================================== # @@ -127,12 +123,29 @@ function(NANOPB_GENERATE_CPP SRCS HDRS) set(${SRCS}) set(${HDRS}) - get_filename_component(GENERATOR_PATH ${NANOPB_GENERATOR_EXECUTABLE} PATH) + + 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) @@ -200,6 +213,12 @@ 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 @@ -235,14 +254,14 @@ find_program(PROTOBUF_PROTOC_EXECUTABLE ) mark_as_advanced(PROTOBUF_PROTOC_EXECUTABLE) -# Find nanopb generator -find_file(NANOPB_GENERATOR_EXECUTABLE +# Find nanopb generator source dir +find_path(NANOPB_GENERATOR_SOURCE_DIR NAMES nanopb_generator.py - DOC "nanopb generator" + DOC "nanopb generator source" PATHS ${NANOPB_SRC_ROOT_FOLDER}/generator ) -mark_as_advanced(NANOPB_GENERATOR_EXECUTABLE) +mark_as_advanced(NANOPB_GENERATOR_SOURCE_DIR) find_package(PythonInterp REQUIRED) @@ -250,6 +269,6 @@ include(FindPackageHandleStandardArgs) FIND_PACKAGE_HANDLE_STANDARD_ARGS(NANOPB DEFAULT_MSG NANOPB_INCLUDE_DIRS NANOPB_SRCS NANOPB_HDRS - NANOPB_GENERATOR_EXECUTABLE + NANOPB_GENERATOR_SOURCE_DIR PROTOBUF_PROTOC_EXECUTABLE ) |