-dnl From Jim Meyering. Use this if you use the GNU error.[ch].
-dnl FIXME: Migrate into libit
+#serial 1
-AC_DEFUN(AM_FUNC_ERROR_AT_LINE,
-[AC_CACHE_CHECK([for error_at_line], am_cv_lib_error_at_line,
- [AC_TRY_LINK([],[error_at_line(0, 0, "", 0, "");],
- am_cv_lib_error_at_line=yes,
- am_cv_lib_error_at_line=no)])
- if test $am_cv_lib_error_at_line = no; then
- LIBOBJS="$LIBOBJS error.o"
- fi
- AC_SUBST(LIBOBJS)dnl
+dnl FIXME: put these prerequisite-only *.m4 files in a separate
+dnl directory -- otherwise, they'll conflict with existing files.
+
+dnl These are the prerequisite macros for GNU's error.c file.
+AC_DEFUN(jm_PREREQ_ERROR,
+[
+ AC_CHECK_FUNCS(strerror strerror_r vprintf doprnt)
+ AC_HEADER_STDC
])