Question

I am trying to build the c++ tutorial examples on a mac with no success so far. The tutorial is here . . . .

https://developers.google.com/protocol-buffers/docs/cpptutorial

I cannot use the makefile to build the examples as there is no pkg-confic command. I get the following error . .

pkg-config --cflags protobuf  # fails if protobuf is not installed
/bin/sh: pkg-config: command not found
make: *** [add_person_cpp] Error 127

I can build the compiler and library just fine using the following

./configure --prefix=/usr
make
make check
make install

I can use protoc to compile the proto file included with the tutorial ok, but I cannot link the executables for some reason. I get the following . . .

$ g++ add_person.cc addressbook.pb.cc -L /usr/lib/ -l libprotobuf.a  -o write
ld: library not found for -llibprotobuf.a

…but the library is definitely in /usr/lib. I’m probably making a really basic error here.

Answer 1

The link flag should be

-lprotobuf