FindProtobuf

Locate and configure the Google Protocol Buffers 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.

PROTOBUF_IMPORT_DIRS     - List of additional directories to be searched for
                           imported .proto files. (New in CMake 2.8.8)

Defines the following variables:

PROTOBUF_FOUND - Found the Google Protocol Buffers library (libprotobuf & header files)
PROTOBUF_INCLUDE_DIRS - Include directories for Google Protocol Buffers
PROTOBUF_LIBRARIES - The protobuf libraries

[New in CMake 2.8.5]

PROTOBUF_PROTOC_LIBRARIES - The protoc libraries
PROTOBUF_LITE_LIBRARIES - The protobuf-lite libraries

The following cache variables are also available to set or use:

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

[New in CMake 2.8.5]

PROTOBUF_LIBRARY_DEBUG - The protobuf library (debug)
PROTOBUF_PROTOC_LIBRARY_DEBUG   - The protoc library (debug)
PROTOBUF_LITE_LIBRARY - The protobuf lite library
PROTOBUF_LITE_LIBRARY_DEBUG - The protobuf lite library (debug)

====================================================================
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_LIBRARIES})

NOTE: You may need to link against pthreads, depending

on the platform.

NOTE: The PROTOBUF_GENERATE_CPP macro & add_executable() or add_library()

calls only work properly within the same directory.

====================================================================

PROTOBUF_GENERATE_CPP (public function)

SRCS = Variable to define with autogenerated
       source files
HDRS = Variable to define with autogenerated
       header files
ARGN = proto files

====================================================================