# $NetBSD: build-defs-message.mk,v 1.1 2006/07/15 23:58:52 rillig Exp $
#

# The build-defs-message target shows the variables that can be configured
# by the pkgsrc user in mk.conf.
#

.PHONY: build-defs-message
pre-depends-hook: build-defs-message
.if empty(PKGSRC_SHOW_BUILD_DEFS:M[yY][eE][sS])
build-defs-message:
.elif !target(build-defs-message)
build-defs-message: ${WRKDIR}
.  if defined(BUILD_DEFS) && !empty(BUILD_DEFS)
.    if !exists(${WRKDIR}/.bdm_done)
	@${ECHO} "=========================================================================="
	@${ECHO} "The following variables will affect the build process of this package,"
	@${ECHO} "${PKGNAME}.  Their current value is shown below:"
	@${ECHO} ""
.      for var in ${BUILD_DEFS:O}
.        if !defined(${var})
	@${ECHO} "        * ${var} (not defined)"
.        elif defined(${var}) && empty(${var})
	@${ECHO} "        * ${var} (defined)"
.        else
	@${ECHO} "        * ${var} = ${${var}}"
.        endif
.      endfor
	@${ECHO} ""
	@${ECHO} "You may want to abort the process now with CTRL-C and change their value"
	@${ECHO} "before continuing.  Be sure to run \`${MAKE} clean' after"
	@${ECHO} "the changes."
	@${ECHO} "=========================================================================="
	@${TOUCH} ${WRKDIR}/.bdm_done
.    endif
.  endif
.endif