Linux 使用来自 yocto build 而不是主机系统的 protoc

我正在try 将GRPC c++示例代码移植到Yocto Build.我正在使用Yocto 2.2(Morty).目前，我能够将Protobuf 3.3.0和GRPC 1.4.3集成到Yocto构建中.使用较旧的版本，因为我所有的层都来自莫蒂分支.这是我的食谱你好.

DESCRIPTION = "Working example for grpc"
AUTHOR = ""
LICENSE = "Apache-2.0"
HOMEPAGE = ""
LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/Apache-2.0;md5=89aea4e17d99a7cacdbeed46a0096b10"

DEPENDS = "grpc golang protobuf3 c-ares zlib openssl"
RDEPENDS_${PN} += "libstdc++"

SRCREV = "29a2a533c98aa21f05c8f598ef2b47321508d5da"
BRANCH = "v1.4.x"
SRC_URI = "gitsm://github.com/grpc/grpc.git;protocol=https;name=grpc;branch=${BRANCH}"

PR = "r0"

S = "${WORKDIR}/git"


EXTRA_OECMAKE = "-DRUN_HAVE_STD_REGEX=1 \
     -DRUN_HAVE_POSIX_REGEX=0 \
     -DRUN_HAVE_STEADY_CLOCK=0 \
     -DTHREADS_PTHREAD_ARG=2 \
     -DBUILD_DEPS=ON \
     -DHAVE_STD_REGEX=ON \
     -DRUN_HAVE_STD_REGEX=1 \
     "

do_compile() {
  cd ${S}/examples/cpp/helloworld/
  make all
}


FILES_${PN} += "${bindir}/*"

do_install() {
    install -d ${D}${bindir}
    install -m 0755 ${S}/examples/cpp/helloworld/greeter_client ${D}${bindir}
    install -m 0755 ${S}/examples/cpp/helloworld/greeter_server ${D}${bindir}
}

我正在使用git的Makefile.我已经修改了几条路径.所以我现在的Makefile是

HOST_SYSTEM = $(shell uname | cut -f 1 -d_)
SYSTEM ?= $(HOST_SYSTEM)
CXX = g++
CXXFLAGS += -I/home/src/build/tmp/work/armv5e-linux-gnueabi/protobuf3/3.3.0-r0/sysroot-destdir/usr/include/ -pthread
CXXFLAGS += -I/home/src/build/tmp/work/armv5e-linux-gnueabi/protobuf3/3.3.0-r0/sysroot-destdir/usr/lib/ -pthread
#CPPFLAGS += -I/usr/local/include -pthread
CXXFLAGS += -std=c++11
ifeq ($(SYSTEM),Darwin)
LDFLAGS += -L/home/src/build/tmp/work/armv5e-linux-gnueabi/grpc/1.4.3-r0/sysroot-destdir/usr/lib `pkg-config --libs grpc++ grpc`       \
           -lgrpc++_reflection \
           -lprotobuf -lpthread -ldl
else
LDFLAGS += -L/home/src/build/tmp/work/armv5e-linux-gnueabi/grpc/1.4.3-r0/sysroot-destdir/usr/lib `pkg-config --libs grpc++ grpc`       \
           -Wl,--no-as-needed -lgrpc++_reflection -Wl,--as-needed \
           -lprotobuf -lpthread -ldl
endif

PROTOC = protoc
GRPC_CPP_PLUGIN = grpc_cpp_plugin
GRPC_CPP_PLUGIN_PATH = "/home/src/build/tmp/work/armv5e-linux-gnueabi/hello/1.4.3-r0/git/vsprojects/vcxproj/"
PROTOS_PATH = ../../protos

vpath %.proto $(PROTOS_PATH)

all: system-check greeter_client greeter_server

greeter_client: helloworld.pb.o helloworld.grpc.pb.o greeter_client.o
        $(CXX) $^ $(LDFLAGS) -o $@

greeter_server: helloworld.pb.o helloworld.grpc.pb.o greeter_server.o
        $(CXX) $^ $(LDFLAGS) -o $@


.PRECIOUS: %.grpc.pb.cc
%.grpc.pb.cc: %.proto
        $(PROTOC) -I $(PROTOS_PATH) --grpc_out=. --plugin=protoc-gen-grpc=$(GRPC_CPP_PLUGIN_PATH) $<

.PRECIOUS: %.pb.cc
%.pb.cc: %.proto
        $(PROTOC) -I $(PROTOS_PATH) --cpp_out=. $<

clean:
        rm -f *.o *.pb.cc *.pb.h greeter_client greeter_server


# The following is to test your system and ensure a smoother experience.
# They are by no means necessary to actually compile a grpc-enabled software.

PROTOC_CMD = which $(PROTOC)
PROTOC_CHECK_CMD = $(PROTOC) --version | grep -q libprotoc.3
PLUGIN_CHECK_CMD = which $(GRPC_CPP_PLUGIN)
HAS_PROTOC = $(shell $(PROTOC_CMD) > /dev/null && echo true || echo false)
ifeq ($(HAS_PROTOC),true)
HAS_VALID_PROTOC = $(shell $(PROTOC_CHECK_CMD) 2> /dev/null && echo true || echo false)
endif
HAS_PLUGIN = $(shell $(PLUGIN_CHECK_CMD) > /dev/null && echo true || echo false)

SYSTEM_OK = false
ifeq ($(HAS_VALID_PROTOC),true)
ifeq ($(HAS_PLUGIN),true)
SYSTEM_OK = true
endif
endif

system-check:
ifneq ($(HAS_VALID_PROTOC),true)
        @echo " DEPENDENCY ERROR"
        @echo
        @echo "You don't have protoc 3.0.0 installed in your path."
        @echo "Please install Google protocol buffers 3.0.0 and its compiler."
        @echo "You can find it here:"
        @echo
        @echo "   https://github.com/google/protobuf/releases/tag/v3.0.0"
        @echo
        @echo "Here is what I get when trying to evaluate your version of protoc:"
        @echo
        -$(PROTOC) --version
        @echo
        @echo
endif
ifneq ($(HAS_PLUGIN),true)
        @echo " DEPENDENCY ERROR"
        @echo
        @echo "You don't have the grpc c++ protobuf plugin installed in your path."
        @echo "Please install grpc. You can find it here:"
        @echo
        @echo "   https://github.com/grpc/grpc"
        @echo
        @echo "Here is what I get when trying to detect if you have the plugin:"
        @echo
        -which $(GRPC_CPP_PLUGIN)
        @echo
        @echo
endif
ifneq ($(SYSTEM_OK),true)
        @false
endif

因此，我面临的问题是，当make文件运行proc命令时，它使用来self 的主机的proc，而不是Yocto构建.即3.21.12版本，该版本使用来自Yocto Build的协议Buf(3.3.0)引发错误

|在helloworld.pb.cc:4:0包含的文件中: |helloworld.pb.h:10:10:致命错误:google/Protobuf/port_Def.inc.没有这样的文件或目录 |#INCLUDE&lt；GOOGLE/PROTOBUF/port_Def.inc&gt； |^~ |编译已终止. |:目标‘helloworld.pb.o’的配方失败 |make:*[helloworld.pb.o]错误1 |警告:退出shell 命令的代码2.

我试着在hello.bb菜谱中使用了proc命令，它也是从主机使用的.

那么，有没有办法在Makefile中使用Yocto Build中的Protoc呢？