1 files changed, 2 insertions, 0 deletions
diff --git a/README.md b/README.md
index 7f6a3d96..025052a6 100644
--- a/README.md
+++ b/README.md
@@ -90,6 +90,8 @@ Afterwards, any of CLBlast's routines can be called directly: there is no need t
 
     cmake -DSAMPLES=ON ..
 
+Furthermore, it is possible to optionally set an OS environmental variable `CLBLAST_BUILD_OPTIONS` to pass specific build options to the OpenCL compiler.
+
 
 Using the tuners (optional)
 -------------