sysdeps/m68k/fpu/switch/Makefile

   1 # Copyright (C) 1991, 1992, 1997 Free Software Foundation, Inc.
   2 # This file is part of the GNU C Library.
   3
   4 # The GNU C Library is free software; you can redistribute it and/or
   5 # modify it under the terms of the GNU Lesser General Public
   6 # License as published by the Free Software Foundation; either
   7 # version 2.1 of the License, or (at your option) any later version.
   8
   9 # The GNU C Library is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 # Lesser General Public License for more details.
  13
  14 # You should have received a copy of the GNU Lesser General Public
  15 # License along with the GNU C Library; if not, write to the Free
  16 # Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17 # 02111-1307 USA.
  18
  19 ifeq ($(subdir),math)
  20
  21 sysdep_routines := $(sysdep_routines) switch
  22
  23 # Find all the sources that have 68881 versions.
  24 +68881-sources := \
  25   $(notdir $(wildcard $(addprefix $(filter %/fpu,$(sysdirs)),$(sources))))
  26
  27 # Sysdep directories other than fpu and fpu/switch (this one).
  28 +non68881-dirs := $(filter-out %/fpu %/fpu/switch,$(+sysdep_dirs))
  29
  30 # Get a non-68881 version of the target.
  31 +non68881-version = $(firstword $(wildcard $(addsuffix /$@,$(+non68881-dirs))))
  32
  33 # Directory containing 68881 sources.
  34 +68881-dir := $(filter %/fpu,$(+sysdep_dirs))
  35
  36 # For all the files that have 68881 versions and don't exist already in
  37 # the source directory (math), automatically make ones that switch between
  38 # 68881 and soft versions.
  39 $(addprefix $(objpfx), \
  40             $(filter-out $(wildcard $(+68881-sources)),$(+68881-sources))):
  41         (echo '#include <68881-sw.h>'           ;\
  42          echo '#define $* __$*_68881'           ;\
  43          echo '#include <$(+68881-dir)/$@>'     ;\
  44          echo '#undef $*'                       ;\
  45          echo '#define $* __$*_soft'            ;\
  46          echo '#include <$(non68881-version)>'  ;\
  47          echo '#undef $*'                       ;\
  48          echo 'switching_function($*);') > $@-tmp
  49         mv $@-tmp $@
  50
  51 endif