Patch to actually use busybox bincache. Thanks to Pat Double

<gentoo@patdouble.com> on bug #180211

git-svn-id: svn+ssh://svn.gentoo.org/var/svnroot/genkernel/trunk@519 67a159dc-881f-0410-a524-ba9dfbe2cb84

ChangeLog

@@ -2,6 +2,11 @@
 # Copyright 2006-2007 Gentoo Foundation; Distributed under the GPL v2
 # $Header: $
 
+  26 Jul 2007; Andrew Gaffney <agaffney@gentoo.org> gen_compile.sh,
+  gen_initramfs.sh, gen_initrd.sh, genkernel.conf:
+  Patch to actually use busybox bincache. Thanks to Pat Double
+  <gentoo@patdouble.com> on bug #180211
+
   21 Jun 2007; Chris Gianelloni <wolf31o2@gentoo.org> gen_initrd.sh:
   Fixed lvm/evms code for initrd generation. Thanks to Vinny
   <vfuria@gmail.com> on bug #179480 for pointing it out.

gen_compile.sh

@@ -427,18 +427,6 @@ compile_unionfs_utils() {
 }
 
 compile_busybox() {
-
-	# Delete cache if config is newer
-	if [ \
-		-f "${BUSYBOX_BINCACHE}" -a \
-		-f "${BUSYBOX_CONFIG}" -a \
-		"${BUSYBOX_BINCACHE}" -ot "${BUSYBOX_CONFIG}" ]
-	then
-		rm -rf "${BUSYBOX_BINCACHE}"
-	fi
-
-	if [ ! -f "${BUSYBOX_BINCACHE}" ]
-	then
 	[ -f "${BUSYBOX_SRCTAR}" ] ||
 		gen_die "Could not find busybox source tarball: ${BUSYBOX_SRCTAR}!"
 	[ -f "${BUSYBOX_CONFIG}" ] ||
@@ -454,6 +442,23 @@ compile_busybox() {
 	cd "${BUSYBOX_DIR}"
 	print_info 1 'busybox: >> Configuring...'
 	yes '' 2>/dev/null | compile_generic oldconfig utils
+
+	# Delete cache if stored config's MD5 does not match one to be used
+	if [ -f "${BUSYBOX_BINCACHE}" -a -f "${BUSYBOX_CONFIG}" ]
+	then
+		oldconfig_md5=$(tar -xjf "${BUSYBOX_BINCACHE}" -O .config | md5sum)
+		newconfig_md5=$(md5sum < .config)
+		if [ "${oldconfig_md5}" != "${newconfig_md5}" ]
+		then
+			print_info 1 "busybox: >> Removing stale cache..."
+			rm -rf "${BUSYBOX_BINCACHE}"
+		else
+			print_info 1 "busybox: >> Using cache"
+		fi
+	fi
+
+	if [ ! -f "${BUSYBOX_BINCACHE}" ]
+	then
 		print_info 1 'busybox: >> Compiling...'
 		compile_generic all utils
 		print_info 1 'busybox: >> Copying to cache...'
@@ -461,14 +466,12 @@ compile_busybox() {
 			gen_die 'Busybox executable does not exist!'
 		strip "${TEMP}/${BUSYBOX_DIR}/busybox" ||
 			gen_die 'Could not strip busybox binary!'
-		bzip2 "${TEMP}/${BUSYBOX_DIR}/busybox" ||
+		tar -cj -C "${TEMP}/${BUSYBOX_DIR}" -f "${BUSYBOX_BINCACHE}" busybox .config ||
-			gen_die 'bzip2 compression of busybox failed!'
+			gen_die 'Could not create the busybox bincache!'
-		mv "${TEMP}/${BUSYBOX_DIR}/busybox.bz2" "${BUSYBOX_BINCACHE}" ||
+	fi
-			gen_die 'Could not copy the busybox binary to the package directory, does the directory exist?'
 
 	cd "${TEMP}"
 	rm -rf "${BUSYBOX_DIR}" > /dev/null
-	fi
 }
 
 compile_lvm2() {

gen_initramfs.sh

@@ -50,10 +50,10 @@ append_busybox() {
 
 	cp "${GK_SHARE}/generic/udhcpc.scripts" ${TEMP}/initramfs-busybox-temp/bin/
 	chmod +x "${TEMP}/initramfs-busybox-temp/bin/udhcpc.scripts"
-	cp "${BUSYBOX_BINCACHE}" "${TEMP}/initramfs-busybox-temp/bin/busybox.bz2" ||
+	cp "${BUSYBOX_BINCACHE}" "${TEMP}/initramfs-busybox-temp/bin/busybox.tar.bz2" ||
 		gen_die 'Could not copy busybox from bincache!'
-	bunzip2 "${TEMP}/initramfs-busybox-temp/bin/busybox.bz2" ||
+	tar -xjf "${TEMP}/initramfs-busybox-temp/bin/busybox.tar.bz2" -C "${TEMP}/initramfs-busybox-temp/bin" busybox ||
-		gen_die 'Could not uncompress busybox!'
+		gen_die 'Could not extract busybox bincache!'
 	chmod +x "${TEMP}/initramfs-busybox-temp/bin/busybox"
 
 	# down devfsd we use with dietlibc

gen_initrd.sh

@@ -80,10 +80,10 @@ create_base_initrd_sys() {
 		chmod +x "${TEMP}/initrd-temp/bin/blkid"
 	fi
 
-	cp "${BUSYBOX_BINCACHE}" "${TEMP}/initrd-temp/bin/busybox.bz2" ||
+	cp "${BUSYBOX_BINCACHE}" "${TEMP}/initrd-temp/bin/busybox.tar.bz2" ||
 		gen_die 'Could not copy busybox from bincache!'
-	bunzip2 "${TEMP}/initrd-temp/bin/busybox.bz2" ||
+	tar -xjf "${TEMP}/initrd-temp/bin/busybox.tar.bz2" -C "${TEMP}/initrd-temp/bin" busybox ||
-		gen_die 'Could not uncompress busybox!'
+		gen_die 'Could not extract busybox bincache!'
 	chmod +x "${TEMP}/initrd-temp/bin/busybox"
 
 	if [ "${NOINITRDMODULES}" = '' ]

genkernel.conf

@@ -86,7 +86,7 @@ BUSYBOX_CONFIG="${GK_SHARE}/%%ARCH%%/busy-config"
 BUSYBOX_VER="1.1.3+gentoo"
 # Busybox bin-cache location, to store pre-compiled busybox
 # binary is just a bzip2 busybox executable
-BUSYBOX_BINCACHE="%%CACHE%%/busybox-${BUSYBOX_VER}-%%ARCH%%.bz2"
+BUSYBOX_BINCACHE="%%CACHE%%/busybox-${BUSYBOX_VER}-%%ARCH%%.tar.bz2"
 # Location of BusyBox source tarball
 BUSYBOX_SRCTAR="${GK_SHARE}/pkg/busybox-${BUSYBOX_VER}.tar.bz2"
 # Directory created after busybox tarball is extracted