Problem with cpp hello world example

[Rajarshi Biswas]

Hello guys, 

I am having the following issue while running the greeter_server example. 

$ ./greeter_server

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

But 

ll ../../../install/lib/libgrpc++*

-rwxr-xr-x 1 biswas.91 biswas.91 1939536 May  8 18:02 ../../../install/lib/libgrpc++.a

-rwxr-xr-x 1 biswas.91 biswas.91 4868510 May  8 18:02 ../../../install/lib/libgrpc++_cronet.a

lrwxrwxrwx 1 biswas.91 biswas.91      25 May  8 18:02 ../../../install/lib/libgrpc++_cronet.so -> libgrpc++_cronet.so.1.3.0

-rwxr-xr-x 1 biswas.91 biswas.91  956448 May  8 18:02 ../../../install/lib/libgrpc++_cronet.so.1.3.0

lrwxrwxrwx 1 biswas.91 biswas.91      25 May  8 18:02 ../../../install/lib/libgrpc++_cronet.so.3 -> libgrpc++_cronet.so.1.3.0

-rwxr-xr-x 1 biswas.91 biswas.91  162902 May  8 18:02 ../../../install/lib/libgrpc++_error_details.a

lrwxrwxrwx 1 biswas.91 biswas.91      32 May  8 18:02 ../../../install/lib/libgrpc++_error_details.so -> libgrpc++_error_details.so.1.3.0

-rwxr-xr-x 1 biswas.91 biswas.91 1423240 May  8 18:02 ../../../install/lib/libgrpc++_error_details.so.1.3.0

lrwxrwxrwx 1 biswas.91 biswas.91      32 May  8 18:02 ../../../install/lib/libgrpc++_error_details.so.3 -> libgrpc++_error_details.so.1.3.0

-rwxr-xr-x 1 biswas.91 biswas.91  587184 May  8 18:02 ../../../install/lib/libgrpc++_reflection.a

lrwxrwxrwx 1 biswas.91 biswas.91      29 May  8 18:02 ../../../install/lib/libgrpc++_reflection.so -> libgrpc++_reflection.so.1.3.0

-rwxr-xr-x 1 biswas.91 biswas.91 1649440 May  8 18:02 ../../../install/lib/libgrpc++_reflection.so.1.3.0

lrwxrwxrwx 1 biswas.91 biswas.91      29 May  8 18:02 ../../../install/lib/libgrpc++_reflection.so.3 -> libgrpc++_reflection.so.1.3.0

lrwxrwxrwx 1 biswas.91 biswas.91      18 May  8 18:02 ../../../install/lib/libgrpc++.so -> libgrpc++.so.1.3.0

-rwxr-xr-x 1 biswas.91 biswas.91  761976 May  8 18:02 ../../../install/lib/libgrpc++.so.1.3.0

lrwxrwxrwx 1 biswas.91 biswas.91      18 May  8 18:02 ../../../install/lib/libgrpc++.so.3 -> libgrpc++.so.1.3.0

-rwxr-xr-x 1 biswas.91 biswas.91 1795644 May  8 18:02 ../../../install/lib/libgrpc++_unsecure.a

lrwxrwxrwx 1 biswas.91 biswas.91      27 May  8 18:02 ../../../install/lib/libgrpc++_unsecure.so -> libgrpc++_unsecure.so.1.3.0

-rwxr-xr-x 1 biswas.91 biswas.91  716504 May  8 18:02 ../../../install/lib/libgrpc++_unsecure.so.1.3.0

lrwxrwxrwx 1 biswas.91 biswas.91      27 May  8 18:02 ../../../install/lib/libgrpc++_unsecure.so.3 -> libgrpc++_unsecure.so.1.3.0

So when I make gRPC , it did not generate libgrpc++.so.1, but greeter_server is looking for that. What am i doing wrong here?

Thanks. 

_Rajarshi 

[Rajarshi Biswas]

OK never mind.

I have fixed it by doing a static link to libgrpc++.a

[GM]

Hi I am having the same problem, can you elaborate on how to solve it.

[Rajarshi Biswas]

Hi,

I used the following flags in the Makefile for hellpworld.

46   SLIBS += /home/biswas.91/grpc/install/lib/libgrpc++.a

47  LDFLAGS += -L/usr/local/lib  -L//home/biswas.91/grpc/third_party/protobuf/src/.libs/ -L/home/biswas.91/grpc/install/lib/ \

48            -lprotobuf -lpthread -lgrpc

And this is how I link

 61 greeter_client: helloworld.pb.o helloworld.grpc.pb.o greeter_client.o

 62         $(CXX) $^ $(LDFLAGS) -o $@ $(SLIBS)

 63

 64 greeter_server: helloworld.pb.o helloworld.grpc.pb.o greeter_server.o

 65         $(CXX) $^ $(LDFLAGS) -o $@ $(SLIBS)

Hope these help. 

Rajarshi 

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Rajarshi Biswas

Citrix R&D
India