warn about ASM_JS

1 files changed, 1 insertions, 0 deletions

diff --git a/emcc b/emcc
index c2b10862..8aae6be1 100755
--- a/emcc
+++ b/emcc
@@ -1144,6 +1144,7 @@ try:
     if DEBUG: save_intermediate('transformed')
 
   if shared.Settings.ASM_JS: # XXX temporary wrapping for testing purposes
+    print >> sys.stderr, 'emcc: ASM_JS mode is highly experimental, and will not work on most codebases yet. It is NOT recommended that you try this yet.'
     unwrapped = open(final).read()
     final += '.asmwrap.js'
     open(final, 'w').write('''