43 lines
1.4 KiB
Makefile
43 lines
1.4 KiB
Makefile
# $NetBSD: bsd.makevars.mk,v 1.3 2005/06/05 04:35:45 rillig Exp $
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#
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# This Makefile fragment is included by bsd.prefs.mk to set all of
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# the variables saved through MAKEVARS. Typical usage is:
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#
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# .include "../../mk/bsd.prefs.mk"
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#
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# .if !defined(EXPENSIVE_VAR)
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# EXPENSIVE_VAR!= ( ... an expensive computation ... )
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# .endif
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# MAKEVARS+= EXPENSIVE_VAR
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#
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# This causes EXPENSIVE_VAR to be computed, then subsequently stored in
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# the variable cache file. The next time through, EXPENSIVE_VAR is
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# set by bsd.makevars.mk, which avoids running the expensive computation
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# again.
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#
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# The cache files are created as we pass through each phase of the build,
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# and we only include the latest cache file that was created.
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#
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.if !defined(_REV_ALL_PHASES)
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_REV_ALL_PHASES= # empty
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. for _phase_ in ${ALL_PHASES}
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_REV_ALL_PHASES:= ${_phase_} ${_REV_ALL_PHASES}
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. endfor
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.endif
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MAKEVARS+= _REV_ALL_PHASES
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# Try including the *.makevars.mk files in reverse order so that the
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# latest file is included and no more. We check for _MAKEVARS_MK since
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# all of the *.makevars.mk files define this symbol at the top of the
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# file.
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#
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.for _phase_ in ${_REV_ALL_PHASES}
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_MAKEVARS_MK.${_phase_}= ${WRKDIR}/.${_phase_}_makevars.mk
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. if !target(${_phase_}-vars)
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${_phase_}-vars: ${_MAKEVARS_MK.${_phase_}}
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. endif
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. if !defined(_MAKEVARS_MK)
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. sinclude "${_MAKEVARS_MK.${_phase_}}"
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. endif
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.endfor
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