On Wed, 25 Jan 2017, Thorsten Glaser wrote: > Looking at the source, AC_SYS_LARGEFILE calls AC_DEFINE_UNQUOTED, > which appends to DEFS (which I agree with Tom Dickey is wrong) as > Florian Weimer said, but — even more confusingly — only when > AC_CONFIG_HEADERS is not used. > > If AC_CONFIG_HEADERS is used, the definition is only written to > its output file (config.h by default). > > This is even more unfortunate, because now, if any program includes > a glibc system header before "config.h", the definition will be > ignored, because it comes too late. > > CPPFLAGS is r̲e̲a̲l̲l̲y̲ the correct place for this. Again. Let’s keep track of t̲h̲i̲s̲ bug here <852617@xxxxxxxxxxxxxxx>. Again, please forward this upstream, too. The workaround I was forced to use in a real-world package is thus: https://anonscm.debian.org/cgit/pkg-remote/xrdp.git/plain/debian/patches/lfs.diff?id=e17430063641d44f5596b5bfc1b32ac4ba39f9f1 This feels completely wrong (and breaks with nōn-GCC compilers). Thanks in advance, //mirabilos (current hat: Debian Developer) -- tarent solutions GmbH Rochusstraße 2-4, D-53123 Bonn • http://www.tarent.de/ Tel: +49 228 54881-393 • Fax: +49 228 54881-235 HRB 5168 (AG Bonn) • USt-ID (VAT): DE122264941 Geschäftsführer: Dr. Stefan Barth, Kai Ebenrett, Boris Esser, Alexander Steeg _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx https://lists.gnu.org/mailman/listinfo/autoconf