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if(PROTOBUF_SRC_ROOT_FOLDER)
message(AUTHOR_WARNING "Variable PROTOBUF_SRC_ROOT_FOLDER defined, but not"
" used in CONFIG mode")
endif()
function(PROTOBUF_GENERATE_CPP SRCS HDRS)
if(NOT ARGN)
message(SEND_ERROR "Error: PROTOBUF_GENERATE_CPP() 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})
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} ${_protobuf_include_path} ${ABS_FIL}
DEPENDS ${ABS_FIL} ${PROTOBUF_PROTOC_EXECUTABLE}
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()
# Internal function: search for normal library as well as a debug one
# if the debug one is specified also include debug/optimized keywords
# in *_LIBRARIES variable
function(_protobuf_find_libraries name filename)
get_target_property(${name}_LIBRARY lib${filename}
IMPORTED_LOCATION_RELEASE)
get_target_property(${name}_LIBRARY_DEBUG lib${filename}
IMPORTED_LOCATION_DEBUG)
if(NOT ${name}_LIBRARY_DEBUG)
# There is no debug library
set(${name}_LIBRARY_DEBUG ${${name}_LIBRARY} PARENT_SCOPE)
set(${name}_LIBRARIES ${${name}_LIBRARY} PARENT_SCOPE)
else()
# There IS a debug library
set(${name}_LIBRARIES
optimized ${${name}_LIBRARY}
debug ${${name}_LIBRARY_DEBUG}
PARENT_SCOPE
)
endif()
endfunction()
# Internal function: find threads library
function(_protobuf_find_threads)
set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
find_package(Threads)
if(Threads_FOUND)
list(APPEND PROTOBUF_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
set(PROTOBUF_LIBRARIES "${PROTOBUF_LIBRARIES}" PARENT_SCOPE)
endif()
endfunction()
#
# Main.
#
# By default have PROTOBUF_GENERATE_CPP macro pass -I to protoc
# for each directory where a proto file is referenced.
if(NOT DEFINED PROTOBUF_GENERATE_CPP_APPEND_PATH)
set(PROTOBUF_GENERATE_CPP_APPEND_PATH TRUE)
endif()
# The Protobuf library
_protobuf_find_libraries(PROTOBUF protobuf)
# The Protobuf Lite library
_protobuf_find_libraries(PROTOBUF_LITE protobuf-lite)
# The Protobuf Protoc Library
_protobuf_find_libraries(PROTOBUF_PROTOC protoc)
if(UNIX)
_protobuf_find_threads()
endif()
# Set the include directory
set(PROTOBUF_INCLUDE_DIR "${_PROTOBUF_IMPORT_PREFIX}/include")
# Set the protoc Executable
get_target_property(PROTOBUF_PROTOC_EXECUTABLE protoc
IMPORTED_LOCATION_RELEASE)
include(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(PROTOBUF DEFAULT_MSG
PROTOBUF_LIBRARY PROTOBUF_INCLUDE_DIR)
if(PROTOBUF_FOUND)
set(PROTOBUF_INCLUDE_DIRS ${PROTOBUF_INCLUDE_DIR})
endif()
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