---------------------------------------------------------------------|----+- ---- Ok, I finally had time to investigate this. Everyone is, of course, right and I bungled this. What happened was that when I removed the egcs 1.1.2 rpm from RedHat 6.0, I also removed the "cc" link that it installed. gcc 2.9.5 does not install such a link. Thus, "cc" was no longer in my path. "configure" and "config.guess" tries to call the compiler with "${CC-cc}" (which I thought meant "$CC or $cc" not "$CC or cc"; thus the confusion. Sorry about that!). Since $CC isn't set and "cc" isn't in my path, compiling the test program fails and "config.guess" exits silently with status "1". Now, this was without doubt my little brainfart, but OTOH it would be prudent of "configure" to check if a compiler is available before trying to use it. It obviously finds it later, as giving the config name works, but wouldn't be better to do that check before the first use of the compiler? Or at least complain when $CC and "cc" is not found and/or when "config.guess" returns an error? -link