<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=UTF-8"> <META NAME="GENERATOR" CONTENT="GtkHTML/3.26.0"> </HEAD> <BODY> On Tue, 2010-12-21 at 18:30 -0800, Alan Coopersmith wrote: <BLOCKQUOTE TYPE=CITE> <PRE> asprintf is considered a GNU extension and thus one needs to define _GNU_SOURCE before including stdio.h. Reported-by: Cyril Brulebois <<A HREF="mailto:kibi@debian.org">kibi@debian.org</A>> Signed-off-by: Alan Coopersmith <<A HREF="mailto:alan.coopersmith@oracle.com">alan.coopersmith@oracle.com</A>> --- configure.ac | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/configure.ac b/configure.ac index 03432f5..88fbcd7 100644 --- a/configure.ac +++ b/configure.ac @@ -12,6 +12,11 @@ AC_CONFIG_HEADERS([config.h]) AM_INIT_AUTOMAKE([foreign dist-bzip2]) AM_MAINTAINER_MODE +# Set common system defines for POSIX extensions, such as _GNU_SOURCE +# Must be called before any macros that run the compiler (like +# AC_PROG_LIBTOOL or XORG_DEFAULT_OPTIONS) to avoid autoconf errors. +AC_USE_SYSTEM_EXTENSIONS + # Require xorg-macros minimum of 1.10 for DocBook XML documentation m4_ifndef([XORG_MACROS_VERSION],            [m4_fatal([must install xorg-macros 1.10 or later before running autoconf/autogen])]) </PRE> </BLOCKQUOTE> Reviewed-by: <TT>Signed-off-by: Gaetan Nadon <<A HREF="mailto:memsize@videotron.ca">memsize@videotron.ca</A>></TT> I typically put it in the "Initialize Autoconf" section, the higher the bettter. It's an Autoconf macro and does not require automake to be initialized. But it's perfectly ok where it is now. You would get a warning anyway if it were placed too late in the file. </BODY> </HTML>