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Rainer,

Thanks for the explanations of everything. I'm still certainly not ready
to become an autoconf master, but...

Rainer Jung wrote:
> In case we build an Apache httpd 2.x module, we are using the httpd
> provided instance of libtool for maximum module compatibility. We find
> this libtool by querying apxs -q LIBTOOL.

Okay, this makes sense, then: I'm using Apache httpd 2.x, so the local
libtool is ignored.

> ==== From your other message ====
> 
>> How does CC get picked when configure runs? I tried reading the
>> configure script but got lost pretty quickly.
> 
> configure is produced out of configure.in by a toolchain including
> autoconf and automake. In configure.in there is an autoconf macro named
> AC_PROG_CC that includes a predefined script to detect the correct
> compiler.

My configure.in contains only this line:
AC_PROG_CC

... with nothing specified.

I wish I knew enough about m4 and autoconf to be able to even guess what
to put in here.

Perhaps this (potential - I've /never/ seen it on other systems) issue
could be avoided by adding a bit of documentation to the BUILD.txt file
that says "if you get a weird error about tags not being defined, try
running this:

export CC=`apxs -q CC`

?

Thanks,
- -chris
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