1 files changed, 5 insertions, 1 deletions
diff --git a/README b/README
index b02f1ffa0..4c3431967 100644
--- a/README
+++ b/README
@@ -78,7 +78,11 @@ The configure gcc following the gcc instructions and also enable vhdl
 languages (you can use --enable-languages=c,vhdl --disable-bootstrap)
 
 * Building with the llvm backend
-TODO
+You need llvm 3.5
+
+First configure ghdl and specify where llvm is installed
+$ ./configure --with-llvm=PREFIX
+  where PREFIX/bin/llvm-config is present
 
 Notes for developpers
 *********************