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add support for using system protoc instead of version in submodule (#698)

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redPanther 2016-06-13 08:11:57 +02:00 committed by brindosch
parent 9f564f8d89
commit f0884ec25b
1 changed files with 27 additions and 19 deletions
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34
dependencies/CMakeLists.txt vendored
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@ -9,27 +9,35 @@ if(ENABLE_WS281XPWM)
external/rpi_ws281x/mailbox.c external/rpi_ws281x/ws2811.c external/rpi_ws281x/mailbox.c external/rpi_ws281x/ws2811.c
external/rpi_ws281x/pwm.c external/rpi_ws281x/dma.c external/rpi_ws281x/pwm.c external/rpi_ws281x/dma.c
external/rpi_ws281x/rpihw.c) external/rpi_ws281x/rpihw.c)
endif(ENABLE_WS281XPWM) endif()
set(BUILD_SHARED_LIBS OFF CACHE BOOL "Build shared protobuf library") set(USE_SYSTEM_PROTO_LIBS OFF CACHE BOOL "use protobuf library from system")
add_subdirectory(external/protobuf)
if(CMAKE_CROSSCOMPILING) if (USE_SYSTEM_PROTO_LIBS)
find_package(Protobuf REQUIRED)
include_directories(${PROTOBUF_INCLUDE_DIRS})
else ()
set(BUILD_SHARED_LIBS OFF CACHE BOOL "Build shared protobuf library")
add_subdirectory(external/protobuf)
if(CMAKE_CROSSCOMPILING)
# when crosscompiling import the protoc executable targets from a file generated by a native build # when crosscompiling import the protoc executable targets from a file generated by a native build
option(IMPORT_PROTOC "Protoc export file (protoc_export.cmake) from a native build" "IMPORT_PROTOC-FILE_NOT_FOUND") option(IMPORT_PROTOC "Protoc export file (protoc_export.cmake) from a native build" "IMPORT_PROTOC-FILE_NOT_FOUND")
include(${IMPORT_PROTOC}) include(${IMPORT_PROTOC})
else() else()
# export the protoc compiler so it can be used when cross compiling # export the protoc compiler so it can be used when cross compiling
export(TARGETS protoc_compiler FILE "${CMAKE_BINARY_DIR}/protoc_export.cmake") 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 ${PROTOBUF_PROTOC_EXECUTABLE} PARENT_SCOPE)
endif() endif()
# define the include for the protobuf library at the parent scope
set(PROTOBUF_INCLUDE_DIRS "${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}) message(STATUS "Using protobuf compiler: " ${PROTOBUF_PROTOC_EXECUTABLE})
#============================================================================= #=============================================================================
@ -76,7 +84,7 @@ function(PROTOBUF_GENERATE_CPP SRCS HDRS)
endforeach() endforeach()
endif() endif()
if(CMAKE_CROSSCOMPILING) if(CMAKE_CROSSCOMPILING OR USE_SYSTEM_PROTO_LIBS)
set(PROTOC_DEPENDENCY ${PROTOBUF_PROTOC_EXECUTABLE}) set(PROTOC_DEPENDENCY ${PROTOBUF_PROTOC_EXECUTABLE})
else() else()
set(PROTOC_DEPENDENCY protoc_compiler) set(PROTOC_DEPENDENCY protoc_compiler)