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function(PROTOBUF_GENERATE_C SRCS HDRS)
if (NOT ARGN)
message(SEND_ERROR "Error: PROTOBUF_GENERATE_C() called without any proto files")
return()
endif ()
if (PROTOBUF_GENERATE_C_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 ${CMAKE_CURRENT_SOURCE_DIR})
endif ()
set(${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-c.c")
list(APPEND ${HDRS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb-c.h")
add_custom_command(
OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb-c.c"
"${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb-c.h"
COMMAND ${PROTOBUF_PROTOC_C_EXECUTABLE}
ARGS --c_out=${CMAKE_CURRENT_BINARY_DIR} ${_protobuf_include_path} ${ABS_FIL}
DEPENDS ${ABS_FIL} ${PROTOBUF_PROTOC_C_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()
# By default have PROTOBUF_GENERATE_C macro pass -I to protoc
# for each directory where a proto file is referenced.
if (NOT DEFINED PROTOBUF_GENERATE_C_APPEND_PATH)
set(PROTOBUF_GENERATE_C_APPEND_PATH TRUE)
endif ()
# Find library
find_library(PROTOBUF_C_LIBRARY
NAMES libprotobuf-c.so libprotobuf-c libprotobuf-c.dylib
)
mark_as_advanced(PROTOBUF_C_LIBRARY)
# Find the include directory
find_path(PROTOBUF_C_INCLUDE_DIR
google/protobuf-c/protobuf-c.h
)
mark_as_advanced(PROTOBUF_C_INCLUDE_DIR)
# Find the protoc-c Executable
find_program(PROTOBUF_PROTOC_C_EXECUTABLE
NAMES protoc-c
DOC "The Google Protocol Buffers C Compiler"
)
mark_as_advanced(PROTOBUF_PROTOC_C_EXECUTABLE)
find_package(PackageHandleStandardArgs)
find_package_handle_standard_args(ProtobufC DEFAULT_MSG
PROTOBUF_C_LIBRARY PROTOBUF_C_INCLUDE_DIR PROTOBUF_PROTOC_C_EXECUTABLE)
set(PROTOBUF_C_INCLUDE_DIRS ${PROTOBUF_C_INCLUDE_DIR})
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