diff --git a/Makefile b/Makefile
index b876a2e..5854adb 100644
--- a/Makefile
+++ b/Makefile
@@ -1,8 +1,29 @@
+
 AS := nasm
 CC := clang
-LD := clang
+LD := lld
 DAS := llvm-objdump
 
+ifneq '$(AS_ENV)' ''
+AS := $(AS_ENV)
+endif
+$(info Using AS=$(AS))
+
+ifneq '$(CC_ENV)' ''
+CC := $(CC_ENV)
+endif
+$(info Using CC=$(CC))
+
+ifneq '$(LD_ENV)' ''
+LD := $(LD_ENV)
+endif
+$(info Using LD=$(LD))
+
+ifneq '$(DAS_ENV)' ''
+DAS := $(DAS_ENV)
+endif
+$(info Using DAS=$(DAS))
+
 INC_COMMON := inc
 MK := mk
 OUT := out
diff --git a/Rules.top b/Rules.top
index a33739f..97b8d54 100644
--- a/Rules.top
+++ b/Rules.top
@@ -27,13 +27,13 @@ DUMP_FLAGS = -x86-asm-syntax=intel \
 			 -t \
 			 -triple=x86_64-pc-none-elf
 
-LD_FLAGS =  -fuse-ld=lld \
+LD_FLAGS =  -fuse-ld=$(LD) \
 			-nostdlib \
 			-Wl,-T,$(LD_SCRIPT) \
 			-Wl,--fatal-warnings
 
 $(TGT): $(OBJ) $(LD_SCRIPT)
-	$(LD) $(LD_FLAGS) -o $@ $^
+	$(CC) $(LD_FLAGS) -o $@ $^
 
 $(DMP): $(TGT)
 	$(DAS) $(DUMP_FLAGS) $< > $@
diff --git a/bootstrap_deb.sh b/bootstrap_deb.sh
new file mode 100644
index 0000000..eeba4ea
--- /dev/null
+++ b/bootstrap_deb.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+# Bootstrap debian 9 + clang-6.0 backport environment
+# Personal use only
+export CC_ENV=clang-6.0
+export LD_ENV=lld-6.0
+export DAS_ENV=llvm-objdump-6.0
+export AS_ENV=nasm
\ No newline at end of file
diff --git a/mk/linker.ld.in b/mk/linker.ld.in
index b780979..0e5646c 100644
--- a/mk/linker.ld.in
+++ b/mk/linker.ld.in
@@ -1,8 +1,6 @@
 #define ASM_FILE
 #include "mlayout.h"
 
-OUTPUT_FORMAT(elf64-x86-64)
-OUTPUT_ARCH(i386:x86-64)
 ENTRY(sys_entry)
 
 SECTIONS
diff --git a/runq.sh b/runq.sh
index 6df736f..18abac9 100644
--- a/runq.sh
+++ b/runq.sh
@@ -1,2 +1,4 @@
 #!/bin/bash
-qemu-system-x86_64 -bios qemu_bios.bin -vnc :1235 -monitor stdio -cdrom out/secxkrnl.iso -s -S
+qemu-system-x86_64 -bios qemu_bios.bin -vnc :10 -monitor stdio -cdrom out/secxkrnl.iso -s -S
+
+