On Thu, Jul 23, 2015 at 8:29 AM, Pádraig Brady <p...@draigbrady.com> wrote: > At line 40 we AC_DEFINE(HAVE_SELINUX_SELINUX_H,0) > > http://git.savannah.gnu.org/gitweb/?p=gnulib.git;a=blob;f=m4/selinux-selinux-h.m4;h=fd09b299;hb=HEAD#l40 > However that may already defined to 1 which is the case > when compiling in -m32 mode but with only the first of these installed: > > $ rpm -qf /usr/include/selinux/selinux.h > libselinux-devel-2.3-9.fc22.x86_64 > libselinux-devel-2.3-9.fc22.i686 > > In that edge case, -Werror will fail due to the redefinition, > thus causing -Werror to not be used in the build. > > Quite the edge case I know, but I'm not sure how best to avoid. > Perhaps we should not use AC_CHECK_HEADERS here, > instead going lower level with AC_PREPROC_IFELSE(.. AC_DEFINE ..) ?
If you can find a clean way to avoid it, go ahead. However, isn't it easy just to refrain from using -Werror when running ./configure?