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Makefile | 1992-05-01 | 2.0 KB | 53 lines |
- # Copyright (C) 1991, 1992 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 $(filter %/fpu,$(sysdirs)),$(sources))))
-
- # Sysdep directories other than fpu and fpu/switch (this one).
- +non68881-dirs := $(filter-out %/fpu %/fpu/switch,$(+sysdep_dirs))
-
- # Get a non-68881 version of the target.
- +non68881-version = $(firstword $(wildcard $(addsuffix /$@,$(+non68881-dirs))))
-
- # Directory containing 68881 sources.
- +68881-dir := $(filter %/fpu,$(+sysdep_dirs))
-
- # For all the files that have 68881 versions and don't exist already in
- # 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-sw.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
-