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