故障排除

问题一：编译过程中提示找不到依赖包

问题描述：

移植指导中编译Demo，执行make命令后，提示找不到相关依赖包的错误，如下：

Package protobuf was not found in the pkg-config search path.
Perhaps you should add the directory containing `protobuf.pc'
to the PKG_CONFIG_PATH environment variable
No package 'protobuf' found
Package grpc++ was not found in the pkg-config search path.
Perhaps you should add the directory containing `grpc++.pc'
to the PKG_CONFIG_PATH environment variable
No package 'grpc++' found
Package grpc was not found in the pkg-config search path.
Perhaps you should add the directory containing `grpc.pc'
to the PKG_CONFIG_PATH environment variable
No package 'grpc' found
/usr/bin/ld: greeter_client.o: undefined reference to symbol '_ZN9grpc_impl26InsecureChannelCredentialsEv'
//usr/local/lib/libgrpc++.so.1: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
make: *** [greeter_client] Error 1

问题原因：缺少“PKG_CONFIG_PATH”环境变量配置。

解决方法：

请参见移植指导设置“PKG_CONFIG_PATH”环境变量，确保环境变量生效后，先执行make clean清除上次未编译成功的Demo之后，再重新参见移植指导验证Demo是否编译成功，且运行正常。

问题二：编译过程中提示无法加载“libgrpc++.so.”1的错误

问题描述：

移植指导 编译Demo，make编译成功后，执行服务器端程序 ./greeter_server时，提示无法加载“libgrpc++.so.1”的错误，如下：

./greeter_server: error while loading shared libraries: libgrpc++.so.1: cannot open shared object file: No such file or direc
tory

问题原因：缺少“LD_LIBRARY_PATH”环境变量配置。

解决方法：请参见移植指导设置“LD_LIBRARY_PATH”环境变量，确保环境变量生效后，先执行make clean清除上次未编译成功的Demo之后，再重新参见移植指导验证Demo是否编译成功，且运行正常。