# $NetBSD: bsd.makevars.mk,v 1.5 2010/02/24 22:53:34 joerg 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 !defined(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. # _ALL_PHASES= fetch tools extract patch \ wrapper configure build stage-install package _REV_ALL_PHASES= package stage-install build configure wrapper \ patch extract tools fetch # 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