document mingw linker fix and close associated bug

[debian/gzip] / m4 / fpieee.m4

diff --git a/m4/fpieee.m4 b/m4/fpieee.m4
index 9f4a92cb3dfb9f3d87189673ecc164aec69b732a..b58840f789d9514a0f5ac9f43b4b9599a5670667 100644 (file)
--- a/m4/fpieee.m4
+++ b/m4/fpieee.m4
@@ -1,5 +1,5 @@
-# fpieee.m4 serial 1
-dnl Copyright (C) 2007 Free Software Foundation, Inc.
+# fpieee.m4 serial 2  -*- coding: utf-8 -*-
+dnl Copyright (C) 2007, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -33,12 +33,14 @@ AC_DEFUN([gl_FP_IEEE],
     alpha*)
       # On Alpha systems, a compiler option provides the behaviour.
       # See the ieee(3) manual page, also available at
-      # <http://h30097.www3.hp.com/docs/base_doc/DOCUMENTATION/V51B_HTML/MAN/MAN3/0600____.HTM>
+      # <https://backdrift.org/man/tru64/man3/ieee.3.html>
       if test -n "$GCC"; then
         # GCC has the option -mieee.
+        # For full IEEE compliance (rarely needed), use option -mieee-with-inexact.
         CPPFLAGS="$CPPFLAGS -mieee"
       else
-        # Compaq (ex-DEC) C has the option -ieee.
+        # Compaq (ex-DEC) C has the option -ieee, equivalent to -ieee_with_no_inexact.
+        # For full IEEE compliance (rarely needed), use option -ieee_with_inexact.
         CPPFLAGS="$CPPFLAGS -ieee"
       fi
       ;;