linking error multi definition of offload code

[ye-luo]

Use reproducer linking.zip

$ sh build.sh 
error: Linking globals named '__omp_offloading_10304_1e81eac__ZN3fooIfEC1Ev_l7_exec_mode': symbol multiply defined!
clang-8: error: amdgcn-link command failed with exit code 1 (use -v to see invocation)

When the offload compiler flags are removed, the code links well.

[estewart08]

Issue was replicated and code was added to use identifying information from the includer file instead of the includee (t.h) file so that the symbol name is unique. This fix will most likely be implemented in our next release of AOMP (0.7-1).

[estewart08]

The fix can also be found in our latest release 0.7-2.

[ye-luo]

I confirm that the issue has been fixed in 0.7-2.