document clang issues
@@ -49,6 +49,9 @@ Updates and further information can be found here:
GCC compiler, the FFTW library, and optionally CUDA.
(see recon/Makefile to turn options on or off)
+It should be possible to use the clang compiler, but older
+version before version 4.0 are known to cause problems.
+
The software can be used in combination with Matlab or octave.
