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From: "Arvid E. Picciani" <aep@exys.org>
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Subject: (real) cross compilation with gcc specs
Date: Mon, 30 Jul 2012 12:25:28 +0200
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i like the musl gcc spec, because it allows me to build stuff without a 
complex set of hacks.
However, it's not working for cross compilation, because the paths 
begin with /

Does anyone know how to use --sysroot in gcc specs? %{r} doesn't seem 
to work although it has been mentioned on the gcc list.

Instead i'm doing this now, which is really ugly:

*startfile:
%{!shared: %:getenv(SYSROOT /lib/%{pie:S}crt1.o)} %:getenv(SYSROOT 
/lib/crti.o) %{shared|pie:crtbeginS.o%s;:crtbegin.o%s}

note that getenv expects a second parameter to concat. quite horrible.

any better ideas?


-- 
Arvid E. Picciani