mk/alternatives.mk

   1 # $NetBSD: alternatives.mk,v 1.10 2007/09/29 15:56:04 rillig Exp $
   2 #
   3 # This Makefile fragment handles the alternatives system, registering a
   4 # package in the database.
   5 #
   6 # User-settable variables:
   7 #
   8 # (none)
   9 #
  10 # Package-settable variables:
  11 #
  12 # ALTERNATIVES_SRC
  13 #       A _single_ file that contains the alternatives provided by the
  14 #       package.
  15 #
  16 #       Default value: The name of the ALTERNATIVES file in the package
  17 #       directory, if it exists. Otherwise, nothing.
  18 #
  19 #       Each line of the alternatives file contains two filenames, first
  20 #       the wrapper and then the alternative provided by the package.
  21 #       Both paths are relative to PREFIX.
  22 #
  23 # Variables defined by this file:
  24 #
  25 # PKG_ALTERNATIVES
  26 #       The path to the pkg_alternatives command.
  27 #
  28
  29 .if !defined(ALTERNATIVES_MK)
  30 ALTERNATIVES_MK=        # defined
  31
  32 _VARGROUPS+=            alternatives
  33 _PKG_VARS.alternatives= ALTERNATIVES_SRC
  34 _SYS_VARS.alternatives= PKG_ALTERNATIVES
  35
  36 .if exists(${.CURDIR}/ALTERNATIVES)
  37 ALTERNATIVES_SRC?=      ${.CURDIR}/ALTERNATIVES
  38 .endif
  39 ALTERNATIVES_SRC?=      # none
  40
  41 .if !empty(ALTERNATIVES_SRC)
  42
  43 ${WRKDIR}/.altinstall: ${ALTERNATIVES_SRC}
  44         @{ ${ECHO} 'if ${TEST} $${STAGE} = "POST-INSTALL"; then'; \
  45         ${ECHO} '${CAT} >./+ALTERNATIVES <<EOF'; \
  46         ${SED} ${FILES_SUBST_SED} <${ALTERNATIVES_SRC}; \
  47         ${ECHO} 'EOF'; \
  48         ${ECHO} 'if ${TEST} -x ${PKG_ALTERNATIVES}; then'; \
  49         ${ECHO} '${PKG_ALTERNATIVES} -gs register ./+ALTERNATIVES'; \
  50         ${ECHO} 'fi'; \
  51         ${ECHO} 'fi'; \
  52         } >${WRKDIR}/.altinstall
  53
  54 ${WRKDIR}/.altdeinstall: ${ALTERNATIVES_SRC}
  55         @{ ${ECHO} 'if ${TEST} $${STAGE} = "DEINSTALL"; then'; \
  56         ${ECHO} 'if ${TEST} -x ${PKG_ALTERNATIVES}; then'; \
  57         ${ECHO} '${PKG_ALTERNATIVES} -gs unregister ./+ALTERNATIVES'; \
  58         ${ECHO} 'fi'; \
  59         ${ECHO} '${RM} -f ./+ALTERNATIVES'; \
  60         ${ECHO} 'fi'; \
  61         } >${WRKDIR}/.altdeinstall
  62
  63 PRINT_PLIST_AWK+=       /^libdata\/alternatives\// { next; }
  64
  65 EVAL_PREFIX+=                   PREFIX.pkg_alternatives=pkg_alternatives
  66 PREFIX.alternatives_DEFAULT=    ${LOCALBASE}
  67 PKG_ALTERNATIVES=               ${PREFIX.pkg_alternatives}/sbin/pkg_alternatives
  68
  69 INSTALL_TEMPLATES+=     ${WRKDIR}/.altinstall
  70 DEINSTALL_TEMPLATES+=   ${WRKDIR}/.altdeinstall
  71
  72 .endif
  73
  74 .endif  # ALTERNATIVES_MK