Re: [avr-gcc-list] [Patch, avr-libc]: Relax sanity check for CC from *avr*gcc* to *gcc*

[Georg-Johann Lay]

Weddington, Eric schrieb:
> > Subject: Re: [avr-gcc-list] [Patch, avr-libc]: Relax sanity check
> > for CC from *avr*gcc* to *gcc*
> >
> > Georg-Johann Lay schrieb:
> >
> > > This is a proposed patch to allow compiler names that don't fit
> > > into the "avr-gcc" scheme like, e.g. "xgcc".
>
> Why is this patch needed?

The avr-libc documentation promises that CC allows to set a user-defined 
build-compiler. This is sabotaged by a too strict checking like 
restricting to a specififc name like, say avr-gcc.

For example, the avr-gcc testsuite is typicaly run against a freshly 
built, not yet installed compiler with

$ $BUILD/gcc/xgcc -B$BUILD/gcc

so that it is desirable to build avr-libc with that compiler without the 
need of a complete avr-gcc installation of the new compiler, i.e. you 
want to set CC="$BUILD/gcc/xgcc -B$BUILD/gcc"  when configuring avr-libc.

The patch adds support of this feature. -dumpmachine will just print "avr".

Johann

> > > * configure.ac (CC): Use `${CC} -dumpmachine` to query for right 
> > > cross compiler instead of checking CC.