Various build.sh fixes

scripts/build.sh

@@ -27,31 +27,46 @@ fetch_file() {
 	FILE_NAME=$(basename ${URL})
 	SHA512=$(curl -s -S ${DIGEST} | grep -A1 -e "^# SHA512 HASH" | grep -o -E -e "^[0-9a-f]{128} *${FILE_NAME}$" | awk '{print $1}')
 
-    if [ -z ${SHA512} ]; then
-        die "Unable to get checksum for ${FILE_NAME}, abort"
+	# Check if local cache is usable
+	if [ ! -d ${LOCAL_CACHE} ] || [ ! -w ${LOCAL_CACHE} ]; then
+		die "Local cache ${LOCAL_CACHE} unusable!"
 	fi
 
-    # Do we have local copy
-    if [ -f ${LOCAL_CACHE}/${FILE_NAME} ]; then
-        # if we have local, correct copy use it
+	if [ -z ${SHA512} ]; then
+		# Let's try md5sum before giving up
+		MD5=$(curl -s -S ${DIGEST} | grep -o -E -e "^[0-9a-f]{32} *${FILE_NAME}$" | awk '{print $1}')
+		if [ -z ${MD5} ]; then
+			die "Unable to get checksum for ${FILE_NAME}, abort"
+		fi
+	fi
+
+	# Do we have local copy, if not download
+	if [ ! -f ${LOCAL_CACHE}/${FILE_NAME} ]; then
+		wget -O ${LOCAL_CACHE}/${FILE_NAME} ${URL} || die "Cannot download ${URL}!" 
+	fi
+
+	if [ ! -z ${SHA512} ]; then
 		if [ $(sha512sum ${LOCAL_CACHE}/${FILE_NAME} | awk '{print $1}') = ${SHA512} ]; then
 			cp ${LOCAL_CACHE}/${FILE_NAME} .
 			return 
 		else
-            echo "Invalid checksum for ${LOCAL_CACHE}/${FILE_NAME}, downloading new copy..."
+			rm -f ${LOCAL_CACHE}/${FILE_NAME}
+			die "Invalid checksum for ${LOCAL_CACHE}/${FILE_NAME}, removing cached copy."
 		fi
 	fi
 
-    wget -nc ${URL} || die "Cannot download ${URL}!" 
-    if [ $(sha512sum ${FILE_NAME} | awk '{print $1}') != ${SHA512} ]; then
-        die "Invalid checksum for ${FILE_NAME}!"
+	if [ ! -z ${MD5} ]; then
+		if [ $(md5sum ${LOCAL_CACHE}/${FILE_NAME} | awk '{print $1}') = ${MD5} ]; then
+			cp ${LOCAL_CACHE}/${FILE_NAME} .
+			return 
+		else
+			rm -f ${LOCAL_CACHE}/${FILE_NAME}
+			die "Invalid checksum for ${LOCAL_CACHE}/${FILE_NAME}, removing cached copy."
+		fi
 	fi
 
-    # Check if local cache is usable
-    if [ -d ${LOCAL_CACHE} ] && [ -w ${LOCAL_CACHE} ]; then
-        cp ${FILE_NAME} ${LOCAL_CACHE}
-        echo "Stored ${FILE_NAME} in local cache."
-    fi
+	die "No checksum available for ${FILE_NAME}!"
+
 }
 
 
@@ -113,17 +128,17 @@ setup_chroot() {
 	local ROOT_FS=$1
 
 	# Import certain values from host config
-    _PORTDIR=$(. /etc/portage/make.conf && echo $PORTDIR)
-    _DISTDIR=$(. /etc/portage/make.conf && echo $DISTDIR)
-    _PKGDIR=$(. /etc/portage/make.conf && echo $PKGDIR)
+	_PORTDIR=$(. ${MAKE_CONF} && echo $PORTDIR)
+	_DISTDIR=$(. ${MAKE_CONF} && echo $DISTDIR)
+	_PKGDIR=$(. ${MAKE_CONF} && echo $PKGDIR)
 	HOST_PORTDIR=${_PORTDIR:-/usr/portage}
 	HOST_DISTDIR=${_DISTDIR:-/usr/portage/distfiles}
 	HOST_PKGDIR=${_PKGDIR:-/usr/portage/packages}
 
 	PORTAGE_SNAPSHOT="${GENTOO_MIRROR}/snapshots/portage-latest.tar.bz2"
 	if [ ${BIND_PORTAGE} = 1 ] ; then
-        if [ -d ${ROOT_FS}/${PORTDIR} ] ; then
-            mount --bind ${HOST_PORTDIR} ${ROOT_FS}/${PORTDIR} || die "Error mounting ${PORTDIR}"
+		if [ -d ${ROOT_FS}/${HOST_PORTDIR} ] ; then
+			mount --bind ${HOST_PORTDIR} ${ROOT_FS}/${HOST_PORTDIR} || die "Error mounting ${HOST_PORTDIR}"
 		fi
 	else
 		# install latest portage snapshot
@@ -164,7 +179,7 @@ cleanup() {
 	umount ${ROOT_FS}/dev ${ROOT_FS}/sys ${ROOT_FS}/proc
 	
 	if [ ${BIND_PORTAGE} != 0 ]; then
-        umount ${ROOT_FS}/${HOST_PORTAGE}
+		umount ${ROOT_FS}/${HOST_PORTDIR}
 	fi
 }
 
@@ -185,6 +200,7 @@ OPTIONS:
 -c local cache (default $LOCAL_CACHE)
 -b bind mount host portage tree 
 -i interactive, setting up chroot and enter it, skip extracting stage3, portage, etc.
+-m make.conf to source portage location,etc. defaults to /etc/portage/make.conf 
 -v Verbose
 EOF
 }
@@ -198,6 +214,7 @@ fi
 VERBOSE=0
 BIND_PORTAGE=0
 INTERACTIVE=0
+MAKE_CONF="/etc/portage/make.conf"
 while getopts ":a:p:t:r:c:m:bvhi" OPTIONS; do
 	case $OPTIONS in
 		a ) ARCH=$OPTARG;;