Fix an error check with MathJax.

The correct variable name is MATHJAX_PATH and its correct invalid value (i.e.,
if nothing is found) is MATHJAX_PATH-NOTFOUND.

diff --git a/doc/doxygen/CMakeLists.txt b/doc/doxygen/CMakeLists.txt
index d47b0bab85d0b3976865604af4aa31c38f62ed5f..915d12892c6aea507c2ae0f03a469024117a1e61 100644 (file)
--- a/doc/doxygen/CMakeLists.txt
+++ b/doc/doxygen/CMakeLists.txt
@@ -65,7 +65,7 @@ IF(DEAL_II_DOXYGEN_USE_MATHJAX)
       "/usr/share/yelp/mathjax"
       DOC "Root path of MathJax.js"
       )
-    IF(MATHJAX MATCHES "-NOTFOUND")
+    IF(MATHJAX_PATH MATCHES "MATHJAX_PATH-NOTFOUND")
       MESSAGE(FATAL_ERROR "MathJax was not found.")
     ENDIF()
   ENDIF()