Added swap to avoid OOM during build

Makefile

 all:
+	dd if=/dev/zero of=swap bs=1048576 count=1024
+	chmod 600 swap
+	mkswap swap
+	swapon swap
+
 	ln -s /usr/bin/python3 /usr/bin/python
 
 	tar xf qtwebkit-5.212.0-alpha4.tar.xz
@@ -10,3 +15,6 @@ all:
 	rm -rf
 
 	rm /usr/bin/python
+
+	swapoff swap
+	rm -rf swap