Index: llvm/trunk/docs/doxygen.cfg.in
===================================================================
--- llvm/trunk/docs/doxygen.cfg.in
+++ llvm/trunk/docs/doxygen.cfg.in
@@ -1409,7 +1409,7 @@
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-USE_MATHJAX            = NO
+USE_MATHJAX            = YES
 
 # When MathJax is enabled you can set the default output format to be used for
 # the MathJax output. See the MathJax site (see: