mk/find-prefix.mk

   1 # $NetBSD: find-prefix.mk,v 1.2 2005/05/12 21:56:11 jlam Exp $
   2 #
   3 # This is a "subroutine" that can be included to find the installation
   4 # prefix of a package.
   5 #
   6 # The input variable is FIND_PREFIX, which is a list of VARNAME=<package>
   7 # pairs, where "VARNAME" is the variable that will be set to the
   8 # installation prefix for the package, and <package> is the ${PKGNAME}
   9 # for the package.
  10 #
  11 # An example use is:
  12 #
  13 # FIND_PREFIX:= M4DIR=gm4
  14 # .include "../../mk/find-prefix.mk"
  15 # # ${M4DIR} now contains the installation prefix for the "gm4" package
  16 #
  17
  18 .for _def_ in ${FIND_PREFIX}
  19 .  if !defined(${_def_:C/=.*$//})
  20 ${_def_:C/=.*$//}_DEFAULT?=     ${LOCALBASE}
  21 _${_def_:C/=.*$//}_cmd=         \
  22         ${PKG_INFO} -qp ${_def_:C/^.*=//} 2>/dev/null |                 \
  23         { read cmd arg;                                                 \
  24           case "$$arg" in                                               \
  25           "")   ${ECHO} ${${_def_:C/=.*$//}_DEFAULT:Q} ;;               \
  26           *)    ${ECHO} "$$arg" ;;                                      \
  27           esac; }
  28 ${_def_:C/=.*$//}=              ${_${_def_:C/=.*$//}_cmd:sh}
  29 .  endif
  30 MAKEVARS+=      ${_def_:C/=.*$//}
  31 .endfor
  32 .undef _def_