[proxygen] Set rpath properly

[jonathanmetzman]

Speculative fix for proxygen.

[jonathanmetzman]

CC @mhlakhani

[inferno-chromium]

Thanks a ton @jonathanmetzman !

[jonathanmetzman]

I'll kick off another build to see if this fix worked.

[inferno-chromium]

@jonathanmetzman - it might be interesting to add this trick on https://google.github.io/oss-fuzz/further-reading/fuzzer-environment/ ? Thoughts ? this patchelf stuff keeps coming every now and then.

[mhlakhani]

thanks for putting up the patch so quickly!

[jonathanmetzman]

thanks for putting up the patch so quickly!

No problem!

it might be interesting to add this trick on https://google.github.io/oss-fuzz/further-reading/fuzzer-environment/ ? Thoughts ? this patchelf stuff keeps coming every now and then.

Sure, doing it now.
An alternative would be adding this some kind of linker flags for OSS-Fuzz projects should use (kind of what $LIB_FUZZING_ENGINE should be IMO)

[jonathanmetzman]

This seems to have worked: https://console.cloud.google.com/storage/browser/_details/proxygen-logs.clusterfuzz-external.appspot.com/libFuzzer_proxygen_ProxygenHTTP1xFuzzer/libfuzzer_asan_proxygen/2019-09-23/23:27:01:122883.log