--- autoconf.texi.~1.785.~	2004-01-04 06:54:32.000000000 +1000
+++ autoconf.texi	2004-01-04 09:37:03.000000000 +1000
@@ -10847,6 +10847,10 @@
 assemble.  @samp{cc -c foo.S} will appear to succeed, but in fact does
 nothing.
 
address@hidden -c foo.c} produces a @file{foo.o} object file.  Most compilers
+allow a @samp{-o} option to direct the output to a different file, but
+POSIX doesn't require this (with @samp{-c}) so it should be avoided.
+
 The default executable, produced by @samp{cc foo.c}, can be
 
 @itemize