CMake/Modules/FindProtobuf.cmake

122 lines
4.3 KiB
CMake

# Locate and configure the Google Protocol Buffers library.
# Defines the following variables:
#
# PROTOBUF_FOUND - Found the Google Protocol Buffers library
# PROTOBUF_INCLUDE_DIRS - Include directories for Google Protocol Buffers
# PROTOBUF_LIBRARIES - The protobuf library
#
# The following cache variables are also defined:
# PROTOBUF_LIBRARY - The protobuf library
# PROTOBUF_PROTOC_LIBRARY - The protoc library
# PROTOBUF_INCLUDE_DIR - The include directory for protocol buffers
# PROTOBUF_PROTOC_EXECUTABLE - The protoc compiler
#
# ====================================================================
# Example:
#
# find_package(Protobuf REQUIRED)
# include_directories(${PROTOBUF_INCLUDE_DIRS})
#
# include_directories(${CMAKE_CURRENT_BINARY_DIR})
# PROTOBUF_GENERATE_CPP(PROTO_SRCS PROTO_HDRS foo.proto)
# add_executable(bar bar.cc ${PROTO_SRCS} ${PROTO_HDRS})
# target_link_libraries(bar ${PROTOBUF_LIBRARY})
#
# NOTE: You may need to link against pthreads, depending
# on the platform.
# ====================================================================
#
# PROTOBUF_GENERATE_CPP (public function)
# SRCS = Variable to define with autogenerated
# source files
# HDRS = Variable to define with autogenerated
# header files
# ARGN = proto files
#
# ====================================================================
#=============================================================================
# Copyright 2009 Kitware, Inc.
# Copyright 2009 Philip Lowman <philip@yhbt.com>
# Copyright 2008 Esben Mose Hansen, Ange Optimization ApS
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
function(PROTOBUF_GENERATE_CPP SRCS HDRS)
if(NOT ARGN)
message(SEND_ERROR "Error: PROTOBUF_GENERATE_CPP() called without any proto files")
return()
endif(NOT ARGN)
set(${SRCS})
set(${HDRS})
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.cc")
list(APPEND ${HDRS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.h")
add_custom_command(
OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.cc"
"${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.h"
COMMAND ${PROTOBUF_PROTOC_EXECUTABLE}
ARGS --cpp_out ${CMAKE_CURRENT_BINARY_DIR} --proto_path ${CMAKE_CURRENT_SOURCE_DIR} ${ABS_FIL}
DEPENDS ${ABS_FIL}
COMMENT "Running C++ protocol buffer compiler on ${FIL}"
VERBATIM )
endforeach()
set_source_files_properties(${${SRCS}} ${${HDRS}} PROPERTIES GENERATED TRUE)
set(${SRCS} ${${SRCS}} PARENT_SCOPE)
set(${HDRS} ${${HDRS}} PARENT_SCOPE)
endfunction()
find_path(PROTOBUF_INCLUDE_DIR google/protobuf/service.h)
# Google's provided vcproj files generate libraries with a "lib"
# prefix on Windows
if(WIN32)
set(PROTOBUF_ORIG_FIND_LIBRARY_PREFIXES "${CMAKE_FIND_LIBRARY_PREFIXES}")
set(CMAKE_FIND_LIBRARY_PREFIXES "lib" "")
endif()
find_library(PROTOBUF_LIBRARY NAMES protobuf
DOC "The Google Protocol Buffers Library"
)
find_library(PROTOBUF_PROTOC_LIBRARY NAMES protoc
DOC "The Google Protocol Buffers Compiler Library"
)
find_program(PROTOBUF_PROTOC_EXECUTABLE NAMES protoc
DOC "The Google Protocol Buffers Compiler"
)
mark_as_advanced(PROTOBUF_INCLUDE_DIR
PROTOBUF_LIBRARY
PROTOBUF_PROTOC_LIBRARY
PROTOBUF_PROTOC_EXECUTABLE)
# Restore original find library prefixes
if(WIN32)
set(CMAKE_FIND_LIBRARY_PREFIXES "${PROTOBUF_ORIG_FIND_LIBRARY_PREFIXES}")
endif()
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(PROTOBUF DEFAULT_MSG
PROTOBUF_LIBRARY PROTOBUF_INCLUDE_DIR)
if(PROTOBUF_FOUND)
set(PROTOBUF_INCLUDE_DIRS ${PROTOBUF_INCLUDE_DIR})
set(PROTOBUF_LIBRARIES ${PROTOBUF_LIBRARY})
endif()