On 05/12/2011 12:40 AM, Wen Congyang wrote:
My steps to build libvirt: 1. # export CFLAGS=-Werror
The general advice from the gnulib list is that using -Werror during the duration of ./configure is unsupported. There are a number of gnulib-supplied configure tests that get the wrong answer if -Werror is on too early, with no plans to fix those upstream in gnulib, so downstream libvirt cannot control all the problems caused by adding -Werror to CFLAGS before configure. Rather, it's better to rely on the ./configure --enable-compile-warnings=error, which libvirt uses to probe if -Werror works, then ensure that -Werror is used during the Makefile when building sane code, but omitted during configure tests where the code is intentionally hairy. -- Eric Blake eblake@redhat.com +1-801-349-2682 Libvirt virtualization library http://libvirt.org