Fix build with embedded protobuf library

Former-commit-id: 5c60566f2d4a9c65fc0fe677841a34d7ef73549a

CMakeLists.txt

@@ -67,15 +67,6 @@ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x -Wall")
 # Configure the use of QT4
 find_package(Qt4 COMPONENTS QtCore QtGui QtNetwork REQUIRED QUIET)
 
-if (ENABLE_PROTOBUF)
-	# add protocol buffers (make sure to find the static version)
-	set(CMAKE_FIND_LIBRARY_SUFFIXES_OLD ${CMAKE_FIND_LIBRARY_SUFFIXES})
-	set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
-	find_package(Protobuf REQUIRED)
-	set(CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES_OLD})
-	set(CMAKE_FIND_LIBRARY_SUFFIXES_OLD)
-endif (ENABLE_PROTOBUF)
-
 #add libusb and pthreads
 find_package(libusb-1.0 REQUIRED)
 find_package(Threads REQUIRED)

dependencies/CMakeLists.txt

@@ -1,2 +1,103 @@
+add_subdirectory(build/getoptPlusPlus)
+add_subdirectory(build/hidapi)
+add_subdirectory(build/jsoncpp)
+add_subdirectory(build/serial)
+add_subdirectory(build/tinkerforge)
 
-add_subdirectory(build)
+if(ENABLE_PROTOBUF)
+	set(BUILD_SHARED_LIBS OFF CACHE BOOL "Build shared protobuf library")
+	add_subdirectory(external/protobuf)
+
+	if(CMAKE_CROSSCOMPILING)
+		# when crosscompiling import the protoc executable targets from a file generated by a native build
+		option(IMPORT_PROTOC "Protoc export file (protoc_export.cmake) from a native build" "IMPORT_PROTOC-FILE_NOT_FOUND")
+		include(${IMPORT_PROTOC})
+	else()
+		# export the protoc compiler so it can be used when cross compiling
+		export(TARGETS protoc_compiler FILE "${CMAKE_BINARY_DIR}/protoc_export.cmake")
+	endif()
+
+	# define the include for the protobuf library at the parent scope
+	set(PROTOBUF_INCLUDE_DIRS "${CMAKE_CURRENT_SOURCE_DIR}/external/protobuf/src")
+	set(PROTOBUF_INCLUDE_DIRS ${PROTOBUF_INCLUDE_DIRS} PARENT_SCOPE)
+
+	# define the protoc executable at the parent scope
+	get_property(PROTOBUF_PROTOC_EXECUTABLE TARGET protoc_compiler PROPERTY LOCATION)
+	set(PROTOBUF_PROTOC_EXECUTABLE ${PROTOBUF_PROTOC_EXECUTABLE} PARENT_SCOPE)
+	message(STATUS "Using protobuf compiler: " ${PROTOBUF_PROTOC_EXECUTABLE})
+
+	#=============================================================================
+	# Copyright 2009 Kitware, Inc.
+	# Copyright 2009-2011 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()
+
+		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()
+
+		if(CMAKE_CROSSCOMPILING)
+			set(PROTOC_DEPENDENCY ${PROTOBUF_PROTOC_EXECUTABLE})
+		else()
+			set(PROTOC_DEPENDENCY protoc_compiler)
+		endif()
+
+		set(${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} ${PROTOC_DEPENDENCY}
+				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()
+endif()

dependencies/build/CMakeLists.txt

@@ -1,6 +0,0 @@
-
-add_subdirectory(getoptPlusPlus)
-add_subdirectory(hidapi)
-add_subdirectory(jsoncpp)
-add_subdirectory(serial)
-add_subdirectory(tinkerforge)

dependencies/external/protobuf

@@ -1 +1 @@
-Subproject commit f644b9c73281e8c0ee3a400b20d3b8b6f63bafdd
+Subproject commit efb59b79e5a8f26eae4d15f38bbfb5667e23df60

libsrc/protoserver/CMakeLists.txt

@@ -4,49 +4,51 @@ set(CURRENT_HEADER_DIR ${CMAKE_SOURCE_DIR}/include/protoserver)
 set(CURRENT_SOURCE_DIR ${CMAKE_SOURCE_DIR}/libsrc/protoserver)
 
 include_directories(
-		${CMAKE_CURRENT_BINARY_DIR}
+	${CMAKE_CURRENT_BINARY_DIR}
-		${PROTOBUF_INCLUDE_DIRS})
+	${PROTOBUF_INCLUDE_DIRS}
+)
 
 # Group the headers that go through the MOC compiler
 set(ProtoServer_QT_HEADERS
-		${CURRENT_HEADER_DIR}/ProtoServer.h
+	${CURRENT_HEADER_DIR}/ProtoServer.h
-		${CURRENT_HEADER_DIR}/ProtoConnection.h
+	${CURRENT_HEADER_DIR}/ProtoConnection.h
-		${CURRENT_SOURCE_DIR}/ProtoClientConnection.h
+	${CURRENT_SOURCE_DIR}/ProtoClientConnection.h
-		${CURRENT_HEADER_DIR}/ProtoConnectionWrapper.h
+	${CURRENT_HEADER_DIR}/ProtoConnectionWrapper.h
 )
 
 set(ProtoServer_HEADERS
 )
 
 set(ProtoServer_SOURCES
-		${CURRENT_SOURCE_DIR}/ProtoServer.cpp
+	${CURRENT_SOURCE_DIR}/ProtoServer.cpp
-		${CURRENT_SOURCE_DIR}/ProtoClientConnection.cpp
+	${CURRENT_SOURCE_DIR}/ProtoClientConnection.cpp
-		${CURRENT_SOURCE_DIR}/ProtoConnection.cpp
+	${CURRENT_SOURCE_DIR}/ProtoConnection.cpp
-		${CURRENT_SOURCE_DIR}/ProtoConnectionWrapper.cpp
+	${CURRENT_SOURCE_DIR}/ProtoConnectionWrapper.cpp
 )
 
 set(ProtoServer_PROTOS
-		${CURRENT_SOURCE_DIR}/message.proto
+	${CURRENT_SOURCE_DIR}/message.proto
 )
 
 protobuf_generate_cpp(ProtoServer_PROTO_SRCS ProtoServer_PROTO_HDRS
-		${ProtoServer_PROTOS}
+	${ProtoServer_PROTOS}
 )
 
 qt4_wrap_cpp(ProtoServer_HEADERS_MOC ${ProtoServer_QT_HEADERS})
 
 add_library(protoserver
-		${ProtoServer_HEADERS}
+	${ProtoServer_HEADERS}
-		${ProtoServer_QT_HEADERS}
+	${ProtoServer_QT_HEADERS}
-		${ProtoServer_SOURCES}
+	${ProtoServer_SOURCES}
-		${ProtoServer_HEADERS_MOC}
+	${ProtoServer_HEADERS_MOC}
-		${ProtoServer_PROTOS}
+	${ProtoServer_PROTOS}
-		${ProtoServer_PROTO_SRCS}
+	${ProtoServer_PROTO_SRCS}
-		${ProtoServer_PROTO_HDRS}
+	${ProtoServer_PROTO_HDRS}
 )
 
 target_link_libraries(protoserver
-		hyperion
+	hyperion
-		hyperion-utils
+	hyperion-utils
-		${PROTOBUF_LIBRARIES}
+	protobuf
-		${QT_LIBRARIES})
+	${QT_LIBRARIES}
+)

src/CMakeLists.txt

@@ -1,12 +1,15 @@
 add_subdirectory(hyperiond)
 add_subdirectory(hyperion-remote)
 
-# Add the 'Video 4 Linux' grabber if it is enabled
+# The following clients depend on the protobuf library
-if(ENABLE_V4L2)
+if(ENABLE_PROTOBUF)
-	add_subdirectory(hyperion-v4l2)
+    # Add the 'Video 4 Linux' grabber if it is enabled
-endif(ENABLE_V4L2)
+    if(ENABLE_V4L2)
+            add_subdirectory(hyperion-v4l2)
+    endif()
 
-# Add the X11 grabber if it is enabled
+    # Add the X11 grabber if it is enabled
-if(ENABLE_X11)
+    if(ENABLE_X11)
-	add_subdirectory(hyperion-x11)
+            add_subdirectory(hyperion-x11)
-endif(ENABLE_X11)
+    endif()
+endif()

src/hyperion-x11/CMakeLists.txt

@@ -14,6 +14,7 @@ include_directories(
 	${CMAKE_CURRENT_BINARY_DIR}/../../libsrc/protoserver
 	${QT_INCLUDES}
 	${X11_INCLUDES}
+	${PROTOBUF_INCLUDE_DIRS}
 )
 
 set(Hyperion_X11_QT_HEADERS