abuild: use proper strip for each subpkg according to it's arch

abuild.in

@@ -132,13 +132,6 @@ default_sanitycheck() {
 		esac
 	done
 
-	# check if CARCH, CBUILD, CHOST and CTARGET is set
-	[ -z "$CHOST" ] && die "Please set CHOST in /etc/abuild.conf"
-
-	if [ -z "$CARCH" ]; then
-		die "Please fix CHOST, or set CARCH in abuild.conf"
-	fi
-
 	for i in $install; do
 		local n=${i%.*}
 		local suff=${i##*.}
@@ -1502,10 +1495,10 @@ default_dbg() {
 			mkdir -p $dstdir
 		fi
 		cd $srcdir
-		objcopy --only-keep-debug $srcfile $dstfile
-		objcopy --add-gnu-debuglink=$dstfile $srcdir/$srcfile
+		${CROSS_COMPILE}objcopy --only-keep-debug $srcfile $dstfile
+		${CROSS_COMPILE}objcopy --add-gnu-debuglink=$dstfile $srcdir/$srcfile
 		mv $dstfile $dstdir
-		strip $srcfile
+		${CROSS_COMPILE}strip $srcfile
 	done
 	return 0
 }
@@ -1934,12 +1927,20 @@ stripbin() {
 		return 0
 	fi
 	cd "${subpkgdir:-$pkgdir}" || return 1
+
+	local stripcmd=strip
+	case "${subpkgarch:-$pkgarch}" in
+	$CBUILD_ARCH)	stripcmd="strip" ;;
+	$CARCH)		stripcmd="${CHOST}-strip" ;;
+	$CTARGET_ARCH)	stripcmd="${CTARGET}-strip" ;;
+	esac
+
 	msg "Stripping binaries"
 	scanelf --recursive --nobanner --etype "ET_DYN,ET_EXEC" . \
 		| sed -e 's:^ET_DYN ::' -e 's:^ET_EXEC ::' \
 		| while read filename; do
 		XATTR=$(getfattr --match="" --dump "${filename}")
-		${CROSS_COMPILE}strip "${filename}"
+		"${stripcmd}" "${filename}"
 		[ -n "$XATTR" ] && (echo "$XATTR" | setfattr --restore=-)
 	done
 }

functions.sh.in

@@ -106,6 +106,7 @@ readconfig() {
 
 	[ -z "$CARCH" ] && CARCH="$(hostspec_to_arch $CHOST)"
 	[ -z "$CLIBC" ] && CLIBC="$(hostspec_to_libc $CHOST)"
+	[ -z "$CBUILD_ARCH" ] && CBUILD_ARCH="$(hostspec_to_arch $CBUILD)"
 	[ -z "$CTARGET_ARCH" ] && CTARGET_ARCH="$(hostspec_to_arch $CTARGET)"
 	[ -z "$CTARGET_LIBC" ] && CTARGET_LIBC="$(hostspec_to_libc $CTARGET)"