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 and vsprojects/Release or vsprojects/x64/Debug and vsprojects/x64/Release) will be searched for libraries and binaries.
PROTOBUF_IMPORT_DIRS
List of additional directories to be searched for imported .proto files.

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
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
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)
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 and protobuf_generate_python functions and add_executable() or add_library() calls only work properly within the same directory.

protobuf_generate_cpp

Add custom commands to process .proto files to C++:

protobuf_generate_cpp (<SRCS> <HDRS> [<ARGN>...])
SRCS
Variable to define with autogenerated source files
HDRS
Variable to define with autogenerated header files
ARGN
.proto files
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