FYI: cc_basename: support distcc/ccache and cross-compilers better

[Ralf Wildenhues]

* Ralf Wildenhues wrote on Thu, Apr 07, 2005 at 12:40:30PM CEST:
> 
> But when a libtoolized package is configured as
>   configure CC='distcc xlc' ..
> Libtool's tests break down[1].

FYI: Applied the following patches to all branches.  Added purify for
convenience, and simplified the sed script, now that we do the word
splitting by hand.  Added workaround for empty $CC.

Regards,
Ralf

2005-04-15  Ralf Wildenhues  <address@hidden>

        * m4/libtool.m4 (_LT_CC_BASENAME): New macro to figure out $cc_basename.
        Skip ccache, distcc, purify, cmdline options, `$host_alias-' prefix.
        (_LT_SETUP, _LT_LANG_CXX_CONFIG, _LT_LANG_F77_CONFIG,
        _LT_LANG_GCJ_CONFIG, _LT_LANG_RC_CONFIG): Use.
        * NEWS, TODO: Update.

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