contrib/bmake/mk/links.mk

   1 # $Id: links.mk,v 1.5 2005/07/11 18:01:05 sjg Exp $
   2 #
   3 #       @(#) Copyright (c) 2005, Simon J. Gerraty
   4 #
   5 #       This file is provided in the hope that it will
   6 #       be of use.  There is absolutely NO WARRANTY.
   7 #       Permission to copy, redistribute or otherwise
   8 #       use this file is hereby granted provided that
   9 #       the above copyright notice and this notice are
  10 #       left intact.
  11 #
  12 #       Please send copies of changes and bug-fixes to:
  13 #       sjg@crufty.net
  14 #
  15
  16 # some platforms need something special
  17 LN?= ln
  18 ECHO?= echo
  19
  20 LINKS?=
  21 SYMLINKS?=
  22
  23 __SYMLINK_SCRIPT= \
  24                 ${ECHO} "$$t -> $$l"; \
  25                 mkdir -p `dirname $$t`; \
  26                 rm -f $$t; \
  27                 ${LN} -s $$l $$t
  28
  29 __LINK_SCRIPT= \
  30                 ${ECHO} "$$t -> $$l"; \
  31                 mkdir -p `dirname $$t`; \
  32                 rm -f $$t; \
  33                 ${LN} $$l $$t
  34
  35 _SYMLINKS_SCRIPT= \
  36         while test $$\# -ge 2; do \
  37                 l=$$1; shift; \
  38                 t=${DESTDIR}$$1; shift; \
  39                 ${__SYMLINK_SCRIPT}; \
  40         done; :;
  41
  42 _LINKS_SCRIPT= \
  43         while test $$\# -ge 2; do \
  44                 l=${DESTDIR}$$1; shift; \
  45                 t=${DESTDIR}$$1; shift; \
  46                 ${__LINK_SCRIPT}; \
  47         done; :;
  48
  49 _SYMLINKS_USE:  .USE
  50         @set ${$@_SYMLINKS:U${SYMLINKS}}; ${_SYMLINKS_SCRIPT}
  51
  52 _LINKS_USE:     .USE
  53         @set ${$@_LINKS:U${LINKS}}; ${_LINKS_SCRIPT}
  54
  55
  56 # sometimes we want to ensure DESTDIR is ignored
  57 _BUILD_SYMLINKS_SCRIPT= \
  58         while test $$\# -ge 2; do \
  59                 l=$$1; shift; \
  60                 t=$$1; shift; \
  61                 ${__SYMLINK_SCRIPT}; \
  62         done; :;
  63
  64 _BUILD_LINKS_SCRIPT= \
  65         while test $$\# -ge 2; do \
  66                 l=$$1; shift; \
  67                 t=$$1; shift; \
  68                 ${__LINK_SCRIPT}; \
  69         done; :;
  70
  71 _BUILD_SYMLINKS_USE:    .USE
  72         @set ${$@_SYMLINKS:U${SYMLINKS}}; ${_BUILD_SYMLINKS_SCRIPT}
  73
  74 _BUILD_LINKS_USE:       .USE
  75         @set ${$@_LINKS:U${LINKS}}; ${_BUILD_LINKS_SCRIPT}