Ed> Perhaps there is some general way to do it for all libraries Ed> that are used? I dunno, somehow associate each header file Ed> name with its library so that when testing for <foo.h> Ed> configure also builds a small program linked with -lfoo? IIRC that's what autoconf 2.5x does. that is, in 2.13 these are separate macros; 2.5x provides those, plus a macro that does both in a fairly simpleminded way (remember, in many cases a single library provides implementations for multiple header files). That's why I'm hoping a 2.5x port will fix a lot of this breakage in one swoop. -- Institute of Policy and Planning Sciences http://turnbull.sk.tsukuba.ac.jp University of Tsukuba Tennodai 1-1-1 Tsukuba 305-8573 JAPAN Ask not how you can "do" free software business; ask what your business can "do for" free software.