The Ports and Clang wiki page has x264 listed as a port with build problems, 
but has Y for the USE_GCC=any workaround. The last commit on the port, over 3 
months ago, has a contradictory message, noting the workaround is insufficient 
and thus is only a temporary fix.

I am running 9.1-RELEASE/amd64 built WITH_CLANG_IS_CC and WITHOUT_GCC. I hit 
the deficiency in the workaround today while building ports.

I took the default port options, except to disable PGO as I expected that would 
be GCC specific. First attempt, configure fails with no working C compiler, 
config.log shows it tries to call "gcc" which does not exist because the port 
did not trigger any gcc from ports.

Second attempt, turn on GCC4.4+ option, clean and make again. Same failure, 
config.log is identical. Huh, why didn't it even try to build some GCC from 
ports? Looking at the Makefile I notice the blanket USE_GCC=any and later the 
conditional USE_GCC?=4.4+. So the workaround appears to smash the port's 
GCC4.4+ option and thus it could never actually use any GCC from ports with 
this workaround in place. The workaround is now the culprit in the brokenness 
when WITHOUT_GCC is used.

Third attempt, remove the offending USE_GCC=any line from the Makefile, turn 
off the GCC4.4+ option in the port, clean and make again. Success! The port 
builds clean with Clang, no errors or warnings except an ignored GCC specific 
option. I have not tested use of the port, that has to wait for others to 
finish building so I have some way to do so.

The immediate question is, what was the original error that mandated the 
workaround and does that error still occur with current version of Clang? If 
the latter is no, can we get rid of the temporary workaround?



Happy Festivus
(Air your grievances)

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