From: Zac Medico <zmedico@gentoo.org>
Date: Thu, 8 Dec 2011 06:43:06 +0000 (-0800)
Subject: Save EPREFIX in vdb when appropriate.
X-Git-Tag: v2.2.0_alpha80~59
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=5cd61be51c5d6c9e4714e65db77ad9c27b2fb9a7;p=portage.git

Save EPREFIX in vdb when appropriate.

The prefix branch already does this since it makes it easy to use
chpathtool to adjust the content of a binary package so that it will
work in a different EPREFIX from the one is was built for.
---

diff --git a/bin/phase-functions.sh b/bin/phase-functions.sh
index 351ae9e1d..230291065 100644
--- a/bin/phase-functions.sh
+++ b/bin/phase-functions.sh
@@ -558,6 +558,20 @@ dyn_install() {
 	fi
 	echo "${USE}"       > USE
 	echo "${EAPI:-0}"   > EAPI
+
+	# Save EPREFIX, since it makes it easy to use chpathtool to
+	# adjust the content of a binary package so that it will
+	# work in a different EPREFIX from the one is was built for.
+	case "${EAPI:-0}" in
+		0|1|2)
+			[[ " ${USE} " == *" prefix "* ]] && \
+				[ -n "${EPREFIX}" ] && echo "${EPREFIX}" > EPREFIX
+			;;
+		*)
+			[ -n "${EPREFIX}" ] && echo "${EPREFIX}" > EPREFIX
+			;;
+	esac
+
 	set +f
 
 	# local variables can leak into the saved environment.