abuild: fix dependency tracing for cross builds

abuild.in

@@ -1026,7 +1026,14 @@ subpkg_provides_pc() {
 trace_apk_deps() {
 	local name="$1"
 	local dir="$2"
+	local parch="$3"
 	local i= found= autodeps= deppkgs= missing=
+	local apkroot=
+
+	case "$parch" in
+	$CBUILD_ARCH) ;;
+	$CARCH | $CTARGET_ARCH) apkroot="--root $CBUILDROOT" ;;
+	esac
 
 	msg "Tracing dependencies..."
 	# add pkgconfig if usr/lib/pkgconfig is found
@@ -1049,8 +1056,8 @@ trace_apk_deps() {
 
 		if subpkg_provides_prefixed_so "$i"; then
 			autodeps="$autodeps so:$sonameprefix$i"
-		elif subpkg_provides_so "$i" || cross_compiling \
-				|| $APK info --quiet --installed "so:$i"; then
+		elif subpkg_provides_so "$i" \
+				|| $APK $apkroot info --quiet --installed "so:$i"; then
 			autodeps="$autodeps so:$i"
 		else
 			missing="$missing $i"
@@ -1061,7 +1068,7 @@ trace_apk_deps() {
 	if [ -f "$dir"/.rpaths ]; then
 		local so_files=$(find_so_files "$dir"/.rpaths $missing) \
 			|| return 1
-		deppkgs=$($APK info --quiet --who-owns $so_files) || return 1
+		deppkgs=$($APK $apkroot info --quiet --who-owns $so_files) || return 1
 	fi
 
 	for found in $deppkgs; do
@@ -1079,9 +1086,9 @@ trace_apk_deps() {
 
 	# pkg-config depends
 	for i in $(sort -u "$dir"/.needs-pc 2>/dev/null); do
-		if subpkg_provides_pc "$i" || cross_compiling \
-				|| $APK info --quiet --installed "pc:$i"; then
-			local provider=$(apk search --quiet "pc:$i")
+		if subpkg_provides_pc "$i" \
+				|| $APK $apkroot info --quiet --installed "pc:$i"; then
+			local provider=$(apk $apkroot search --quiet "pc:$i")
 			if list_has "$provider" $depends_dev; then
 				warning "$provider should be removed from depends_dev"
 			fi
@@ -1090,7 +1097,7 @@ trace_apk_deps() {
 			warning "Could not find any provider for pc:$i"
 			local pcfile=/usr/lib/pkgconfig/"${i%%[<>=]*}".pc
 			if [ -e "$pcfile" ]; then
-				local owner=$($APK info --quiet --who-owns $pcfile)
+				local owner=$($APK $apkroot info --quiet --who-owns $pcfile)
 				warning "${owner:-package providing $pcfile} needs to be rebuilt"
 			fi
 		fi
@@ -1310,7 +1317,7 @@ create_apks() {
 		local subpkgname=$name
 		local subpkgarch=$(pkginfo_val arch $file)
 
-		trace_apk_deps "$name" "$dir" || return 1
+		trace_apk_deps "$name" "$dir" "$subpkgarch" || return 1
 		msg "Package size: ${size}"
 		msg "Compressing data..."
 		(