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authorjlam <jlam@pkgsrc.org>2005-06-01 03:04:16 +0000
committerjlam <jlam@pkgsrc.org>2005-06-01 03:04:16 +0000
commit4631a73a95d1a53616ccced01fbf11c46c2e5d0c (patch)
tree6aaeaa76798bb23e32433c2f97c18559ee6d2803 /mk/bsd.makevars.mk
parent5558bf0a22e30f072beaa7d1b91fab8ec07ae975 (diff)
downloadpkgsrc-4631a73a95d1a53616ccced01fbf11c46c2e5d0c.tar.gz
Separate out the logic to include the correct <phase>.makevars.mk file
into a new file bsd.makevars.mk that can be included by other Makefiles.
Diffstat (limited to 'mk/bsd.makevars.mk')
-rw-r--r--mk/bsd.makevars.mk40
1 files changed, 40 insertions, 0 deletions
diff --git a/mk/bsd.makevars.mk b/mk/bsd.makevars.mk
new file mode 100644
index 00000000000..2fe63a99171
--- /dev/null
+++ b/mk/bsd.makevars.mk
@@ -0,0 +1,40 @@
+# $NetBSD: bsd.makevars.mk,v 1.1 2005/06/01 03:04:16 jlam Exp $
+#
+# This Makefile fragment is included by other Makefiles to set all of
+# the variables saved through MAKEVARS. Typical usage is:
+#
+# .include "../../mk/bsd.makevars.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.
+#
+.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