diff --git a/blinker01/Makefile b/blinker01/Makefile
index 5f274e8..e5bdcbd 100644
--- a/blinker01/Makefile
+++ b/blinker01/Makefile
@@ -1,9 +1,14 @@
 
 ARMGNU ?= arm-none-eabi
 
-COPS = -Wall -O2 -nostdlib -nostartfiles -ffreestanding 
+AOPS = --warn --fatal-warnings 
+COPS = -Wall -Werror -O2 -nostdlib -nostartfiles -ffreestanding 
 
-all : blinker01.hex blinker01.bin
+
+
+gcc : blinker01.hex blinker01.bin
+
+all : gcc clang
 
 clean :
 	rm -f *.o
@@ -12,15 +17,17 @@ clean :
 	rm -f *.elf
 	rm -f *.list
 	rm -f *.img
+	rm -f *.bc
+	rm -f *.clang.opt.s
 
-novectors.o : novectors.s
-	$(ARMGNU)-as novectors.s -o novectors.o
+vectors.o : vectors.s
+	$(ARMGNU)-as vectors.s -o vectors.o
 
 blinker01.o : blinker01.c
 	$(ARMGNU)-gcc $(COPS) -c blinker01.c -o blinker01.o
 
-blinker01.elf : memmap novectors.o blinker01.o 
-	$(ARMGNU)-ld novectors.o blinker01.o -T memmap -o blinker01.elf
+blinker01.elf : memmap vectors.o blinker01.o 
+	$(ARMGNU)-ld vectors.o blinker01.o -T memmap -o blinker01.elf
 	$(ARMGNU)-objdump -D blinker01.elf > blinker01.list
 
 blinker01.bin : blinker01.elf
@@ -34,3 +41,30 @@ blinker01.hex : blinker01.elf
 
 
 
+LOPS = -Wall -m32 -emit-llvm
+LLCOPS = -march=arm -mcpu=arm1176jzf-s
+LLCOPS0 = -march=arm 
+LLCOPS1 = -march=arm -mcpu=arm1176jzf-s
+COPS = -Wall  -O2 -nostdlib -nostartfiles -ffreestanding
+OOPS = -std-compile-opts
+
+clang : blinker01.clang.hex blinker01.clang.bin
+
+
+blinker01.clang.bc : blinker01.c
+	clang $(LOPS) -c blinker01.c -o blinker01.clang.bc
+
+blinker01.clang.opt.elf : memmap vectors.o blinker01.clang.bc
+	opt $(OOPS) blinker01.clang.bc -o blinker01.clang.opt.bc
+	llc $(LLCOPS) blinker01.clang.opt.bc -o blinker01.clang.opt.s
+	$(ARMGNU)-as blinker01.clang.opt.s -o blinker01.clang.opt.o
+	$(ARMGNU)-ld -o blinker01.clang.opt.elf -T memmap vectors.o blinker01.clang.opt.o
+	$(ARMGNU)-objdump -D blinker01.clang.opt.elf > blinker01.clang.opt.list
+
+blinker01.clang.hex : blinker01.clang.opt.elf
+	$(ARMGNU)-objcopy blinker01.clang.opt.elf blinker01.clang.hex -O ihex
+
+blinker01.clang.bin : blinker01.clang.opt.elf
+	$(ARMGNU)-objcopy blinker01.clang.opt.elf blinker01.clang.bin -O binary
+
+
diff --git a/blinker01/novectors.s b/blinker01/vectors.s
similarity index 100%
rename from blinker01/novectors.s
rename to blinker01/vectors.s
diff --git a/buildgcc/README b/buildgcc/README
index 21829ac..42b50ee 100644
--- a/buildgcc/README
+++ b/buildgcc/README
@@ -11,3 +11,7 @@ sudo ./build_gcc
 then put whatever you had in your prefix/bin in the path.  The default
 gnuarm would mean /gnuarm/bin goes in the PATH.
 
+
+clang script I wrote, builds llvm+clang from sources.
+
+
diff --git a/buildgcc/build_clang b/buildgcc/build_clang
new file mode 100755
index 0000000..60c0580
--- /dev/null
+++ b/buildgcc/build_clang
@@ -0,0 +1,9 @@
+
+svn co http://llvm.org/svn/llvm-project/llvm/branches/release_30/ llvm30
+cd llvm30
+cd tools
+svn co http://llvm.org/svn/llvm-project/cfe/branches/release_30/ clang
+cd ..
+./configure --enable-optimized --disable-doxygen --prefix=/llvm30
+make -j 4
+make install