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Date: Sun, 3 Apr 2016 20:04:48 -0400
From: Rich Felker <>
Subject: Re: musl working and almost building with current pcc

On Sun, Apr 03, 2016 at 02:47:56PM -0700, Isaac Dunham wrote:
> Hello,
> Current (20160403) pcc almost builds a working
> (Unfortunately, it's still necessary to fix the pcc-libs package
> by updating config.guess/config.sub and adding protected visibility;
> I didn't add protected visibility and forced -fPIC, though the build
> system seems to add -fPIC for some files.)

Everything in libpcc.a needs to be _hidden_, not protected. The issue
is not whether it binds locally but whether it produces
wrongly-exported symbols in shared libs it gets linked into.

> However, PCC reports a major internal compiler error at line 1382
> of ldso/dynlink.c (which is conditional on FDPIC support).
> If I convert the "if (DL_FDPIC) ..." to an ifdef, I get a working libc.
> (src/complex/catanf.c is now properly compiled.)

It's always defined (to either 0 or 1) so #ifdef produces wrong code.
Did you try #if DL_FDPIC? That should work but there's obviously some
serious pcc bug going on here, probably preprocessor breakage again.

FWIW pcc used to work fine but they keep breaking it, usually the


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