a72cd1c453
allows the saved make variables to be re-set whenever bsd.prefs.mk is included, and is a shortcut for the common case where a Makefile includes both.
43 lines
1.4 KiB
Makefile
43 lines
1.4 KiB
Makefile
# $NetBSD: bsd.makevars.mk,v 1.2 2005/06/01 17:05:19 jlam Exp $
|
|
#
|
|
# This Makefile fragment is included by bsd.prefs.mk to set all of
|
|
# the variables saved through MAKEVARS. Typical usage is:
|
|
#
|
|
# .include "../../mk/bsd.prefs.mk"
|
|
#
|
|
# .if !define(EXPENSIVE_VAR)
|
|
# EXPENSIVE_VAR!= ( ... an expensive computation ... )
|
|
# .endif
|
|
# MAKEVARS+= EXPENSIVE_VAR
|
|
#
|
|
# This causes EXPENSIVE_VAR to be computed, then subsequently stored in
|
|
# the variable cache file. The next time through, EXPENSIVE_VAR is
|
|
# set by bsd.makevars.mk, which avoids running the expensive computation
|
|
# again.
|
|
#
|
|
# The cache files are created as we pass through each phase of the build,
|
|
# and we only include the latest cache file that was created.
|
|
#
|
|
|
|
.if !defined(_REV_ALL_PHASES)
|
|
_REV_ALL_PHASES= # empty
|
|
. for _phase_ in ${ALL_PHASES}
|
|
_REV_ALL_PHASES:= ${_phase_} ${_REV_ALL_PHASES}
|
|
. endfor
|
|
.endif
|
|
MAKEVARS+= _REV_ALL_PHASES
|
|
|
|
# Try including the *.makevars.mk files in reverse order so that the
|
|
# latest file is included and no more. We check for _MAKEVARS_MK since
|
|
# all of the *.makevars.mk files define this symbol at the top of the
|
|
# file.
|
|
#
|
|
.for _phase_ in ${_REV_ALL_PHASES}
|
|
_MAKEVARS_MK.${_phase_}= ${WRKDIR}/.${_phase_}_makevars.mk
|
|
. if !target(${_phase_}-vars)
|
|
${_phase_}-vars: ${_MAKEVARS_MK.${_phase_}}
|
|
. endif
|
|
. if !defined(_MAKEVARS_MK)
|
|
. sinclude "${_MAKEVARS_MK.${_phase_}}"
|
|
. endif
|
|
.endfor
|