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FindProtobuf: Add protobuf_generate_python function

This commit is contained in:
Andreas Bergmeier 2015-09-14 09:41:38 +02:00 committed by Brad King
parent 6dad4c25b0
commit 2ec97b1302
2 changed files with 69 additions and 4 deletions
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6
Help/release/dev/FindProtobuf-python-extension.rst Normal file
View File

@ -0,0 +1,6 @@
FindProtobuf-python-extension
-----------------------------
* The :module:`FindProtobuf` module gained a new
:command:`protobuf_generate_python` function to generate python
sources from ``.proto`` files.

67
Modules/FindProtobuf.cmake
View File

@ -57,17 +57,18 @@
# include_directories(${PROTOBUF_INCLUDE_DIRS})
# include_directories(${CMAKE_CURRENT_BINARY_DIR})
# protobuf_generate_cpp(PROTO_SRCS PROTO_HDRS foo.proto)
# protobuf_generate_python(PROTO_PY foo.proto)
# add_executable(bar bar.cc ${PROTO_SRCS} ${PROTO_HDRS})
# target_link_libraries(bar ${PROTOBUF_LIBRARIES})
#
# .. note::
# The PROTOBUF_GENERATE_CPP macro and add_executable() or
# add_library() calls only work properly within the same
# directory.
# The ``protobuf_generate_cpp`` and ``protobuf_generate_python``
# functions and :command:`add_executable` or :command:`add_library`
# calls only work properly within the same directory.
#
# .. command:: protobuf_generate_cpp
#
# Add custom commands to process ``.proto`` files::
# Add custom commands to process ``.proto`` files to C++::
#
# protobuf_generate_cpp (<SRCS> <HDRS> [<ARGN>...])
#
@ -77,6 +78,17 @@
# Variable to define with autogenerated header files
# ``ARGN``
# ``.proto`` files
#
# .. command:: protobuf_generate_python
#
# Add custom commands to process ``.proto`` files to Python::
#
# protobuf_generate_python (<PY> [<ARGN>...])
#
# ``PY``
# Variable to define with autogenerated Python files
# ``ARGN``
# ``.proto`` filess
#=============================================================================
# Copyright 2009 Kitware, Inc.
@ -147,6 +159,53 @@ function(PROTOBUF_GENERATE_CPP SRCS HDRS)
set(${HDRS} ${${HDRS}} PARENT_SCOPE)
endfunction()
function(PROTOBUF_GENERATE_PYTHON SRCS)
if(NOT ARGN)
message(SEND_ERROR "Error: PROTOBUF_GENERATE_PYTHON() called without any proto files")
return()
endif()
if(PROTOBUF_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 _protobuf_include_path ${ABS_PATH} _contains_already)
if(${_contains_already} EQUAL -1)
list(APPEND _protobuf_include_path -I ${ABS_PATH})
endif()
endforeach()
else()
set(_protobuf_include_path -I ${CMAKE_CURRENT_SOURCE_DIR})
endif()
if(DEFINED PROTOBUF_IMPORT_DIRS)
foreach(DIR ${PROTOBUF_IMPORT_DIRS})
get_filename_component(ABS_PATH ${DIR} ABSOLUTE)
list(FIND _protobuf_include_path ${ABS_PATH} _contains_already)
if(${_contains_already} EQUAL -1)
list(APPEND _protobuf_include_path -I ${ABS_PATH})
endif()
endforeach()
endif()
set(${SRCS})
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}/${FIL_WE}_pb2.py")
add_custom_command(
OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}_pb2.py"
COMMAND ${PROTOBUF_PROTOC_EXECUTABLE} --python_out ${CMAKE_CURRENT_BINARY_DIR} ${_protobuf_include_path} ${ABS_FIL}
DEPENDS ${ABS_FIL} ${PROTOBUF_PROTOC_EXECUTABLE}
COMMENT "Running Python protocol buffer compiler on ${FIL}"
VERBATIM )
endforeach()
set(${SRCS} ${${SRCS}} PARENT_SCOPE)
endfunction()
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
set(_PROTOBUF_ARCH_DIR x64/)
endif()