On 01/27/2017 05:31 AM, ishik...@yk.rim.or.jp wrote: > In configure script generated by autoconf 2.13 for mozilla software > > # Generated automatically using autoconf version 2.13 > # Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc.
Wow that's old. Can you convince the project to upgrade their configure.in file to use autoconf 2.69 instead? > > I found a few tests that failed if -Werror=unsed-variable is defined for > CFLAGS (an environment variable). Generally, ANY use of -Werror during configure is going to cause problems. Our general advice is "don't do that". If you want to test if a particular warning flag is supported, do so (and in fact, there's patches posted that I still want to incorporate into autoconf 2.70 that make warning flag probing easier) - but only for the duration of that test. Don't actually change CFLAGS for the rest of the configure suite. GNU Coreutils is a good example of how to probe for -Werror and even use it via a separate Makefile.am variable, without having it on to mess with the rest of the configure probes. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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