--- lib/freadahead.c.orig	2008-03-10 19:11:22 -0700
+++ lib/freadahead.c	2008-04-14 17:38:46 -0700
@@ -78,6 +78,8 @@
 	 + (fp->_Mode & 0x4000 /* _MBYTE */
 	    ? (fp->_Back + sizeof (fp->_Back)) - fp->_Rback
 	    : 0);
+#elif defined __DragonFly__	    /* DragonFly */
+  return __sreadahead(fp);
 #else
  #error "Please port gnulib freadahead.c to your platform! Look at the definition of fflush, fread, ungetc on your system, then report this to bug-gnulib."
 #endif
Only in /usr/obj/pkgsrc/devel/m4/work/m4-1.4.11/lib: freadahead.o
diff -u -r ./freading.c /usr/obj/pkgsrc/devel/m4/work/m4-1.4.11/lib/freading.c
--- lib/freading.c.orig	2007-11-10 15:24:02 -0800
+++ lib/freading.c	2008-04-14 17:41:47 -0700
@@ -42,6 +42,8 @@
 #elif defined __QNX__               /* QNX */
   return ((fp->_Mode & 0x2 /* _MOPENW */) == 0
 	  || (fp->_Mode & 0x1000 /* _MREAD */) != 0);
+#elif defined __DragonFly__	    /* DragonFly */
+  return ((((struct __FILE_public *)fp)->_flags & __SRD) != 0);
 #else
  #error "Please port gnulib freading.c to your platform!"
 #endif
--- lib/fseeko.c.orig	2007-12-17 21:18:34 -0800
+++ lib/fseeko.c	2008-04-14 20:27:44 -0700
@@ -23,6 +23,18 @@
 /* Get off_t and lseek.  */
 #include <unistd.h>
 
+#ifdef __DragonFly__
+
+#undef fseeko
+
+int
+rpl_fseeko (FILE *fp, off_t offset, int whence)
+{
+	return(fseeko(fp, offset, whence));
+}
+
+#else
+
 #undef fseeko
 #if !HAVE_FSEEKO
 # undef fseek
@@ -121,3 +133,5 @@
   else
     return fseeko (fp, offset, whence);
 }
+
+#endif