Hi, I'm sorry, I have a memory of asking about this before, but I can't after much searching find the previous correspondence, if any.
When building with -ansi -pedantic, I get warnings like this: In file included from printf-args.c:30: printf-args.h:105: warning: ISO C90 does not support 'long long' but shouldn't gnulib work with C89? I am turning on C89 mode early, i.e. before gl_EARLY. (Part of my problem last time was only adding -ansi -pedantic after gl_EARLY, which understandably did not work.) The early part of my configure.ac goes (after AC_INIT and AM_INIT_AUTOMAKE): dnl Set up C compiler AC_GNU_SOURCE AC_PROG_CC AX_CFLAGS_WARN_ALL if test "$GCC" = "yes"; then  CFLAGS="$CFLAGS -W -Wmissing-prototypes -Wstrict-prototypes -D_FORTIFY_SOURCE=2" fi AX_CFLAGS_FORCE_C89 gl_EARLY AM_PROG_CC_C_O AX_CFLAGS_FORCE_C89 is a new macro in autoconf-archive that I based on AX_CFLAGS_WARN_ALL, and it just adds -ansi -pedantic (or equivalent flags in other compilers), unlike AC_PROG_CC_C89, which only ensures at least ANSI compatibility rather than strict compatibility. -- http://rrt.sc3d.org Psalms 19:12: tagline for the guilty
