undefined reference to `pthread_key_create' (linker error)

Question

I have downloaded gtest 1.7.0 sources from here:

https://code.google.com/p/googletest/downloads/list

and build the gtest .a files (lib files) on ubuntu 13.10

Answer 1

Nope, the problem is with Gtest's build.

If you build it using the standard configure approach, it isn't supplying the -lpthread correctly to create libgtest.so. Hence, when you try building a final shared library that actually uses the pthread capability it fails.

Instead, use the Cmake approach:

cd gtest-1.7.0
mkdir build
cd build
cmake -DBUILD_SHARED_LIBS=ON ..
make 

And then manually install these into /usr/lib/

This version correctly links in libpthread into libgtest.