Initial revision

diff --git a/sysdeps/m68k/fpu/switch/Makefile b/sysdeps/m68k/fpu/switch/Makefile
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+++ b/sysdeps/m68k/fpu/switch/Makefile
@@ -0,0 +1,52 @@
+# Copyright (C) 1991 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Library General Public License as
+# published by the Free Software Foundation; either version 2 of the
+# License, or (at your option) any later version.
+
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Library General Public License for more details.
+
+# You should have received a copy of the GNU Library General Public
+# License along with the GNU C Library; see the file COPYING.LIB.  If
+# not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+# Cambridge, MA 02139, USA.
+
+ifeq ($(subdir),math)
+
+sysdep_routines := $(sysdep_routines) switch
+
+# Find all the sources that have 68881 versions.
++68881-sources := \
+  $(notdir $(wildcard $(addprefix $(filter %/68881,$(sysdirs)),$(sources))))
+
+# Sysdep directories other than 68881 and 68881-switch (this one).
++non68881-dirs := $(filter-out %/68881 %/68881-switch,$(+sysdep_dirs))
+
+# Get a non-68881 version of the target.
++non68881-version = $(firstword $(wildcard $(addsuffix /$@,$(+non68881-dirs))))
+
+# Directory containing 68881 sources.
++68881-dir := $(filter %/68881,$(+sysdep_dirs))
+
+# For all the files that have 68881 versions and don't exist already
+# the source directory (math), automatically make ones that switch between
+# 68881 and soft versions.
+$(addprefix $(objpfx), \
+           $(filter-out $(wildcard $(+68881-sources)),$(+68881-sources))):
+       (echo '#include <ansidecl.h>'           ;\
+        echo '#include <68881-switch.h>'       ;\
+        echo '#define $* __$*_68881'           ;\
+        echo '#include <$(+68881-dir)/$@>'     ;\
+        echo '#undef $*'                       ;\
+        echo '#define $* __$*_soft'            ;\
+        echo '#include <$(non68881-version)>'  ;\
+        echo '#undef $*'                       ;\
+        echo 'switching_function($*);') > $@-tmp
+       mv $@-tmp $@
+
+endif