Re: libstdc++, autoconf, and /lib/cpp (was Fw: Re: GCC 3.0 Status , Report)

[Phil Edwards <pedwards at disaster dot jaj dot com>]

On Wed, May 02, 2001 at 04:08:40PM -0700, Benjamin Kosnik wrote:
> > #   --with-headers=dir -- Specifies a directory which has target include
> > #   files. This options is required when building a cross compiler, if
> > #   ${prefix}/${target}/sys-include doesn't pre-exist.
> 
> shouldn't have to do this

Shouldn't have to do either one, or shouldn't have to do the --with?


> > Wouldn't that be tricker than calling just the preprocessor?  If the system
> > headers aren't being found during configure, then things are only going
> > to get worse.
> 
> The thought is that CXX gets passed down and set correctly, whereas CPP 
> isn't or doesn't, I'm not quite sure which. So, it might be an effective 
> work-around to just use AC_TRY_COMPILE, and thus CXX. 

CXXCPP is being passed down, it's just incorrect because autoconf believes
that "xgcc -E" doesn't work properly (since stdlib.h couldn't be found).

It feels like we're papering over a problem... i.e., if things like
stdlib.h can't be found by the newly-built xgcc during configure, I can't
wait until we actually try and compile the library.


Phil

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