Build kernel

Makefile

@@ -1,6 +1,10 @@
 BUILD_DIR=./build
 export QEMU?=qemu-system-x86_64
 
+TOOLCHAIN = $(CURDIR)/tools/bin/x86_64-unknown-redox/toolchain
+export PATH := $(TOOLCHAIN)/bin:$(PATH)
+export CARGO := $(TOOLCHAIN)/bin/cargo
+
 # Default rule
 .PHONY: default
 default: bios