Only build roofit/ if ROOT has roofit enabled.

Axel-Naumann · vgvassilev · commit ed9029c26d98 · 2017-10-30T17:28:31.000+01:00
diff --git a/root/CMakeLists.txt b/root/CMakeLists.txt
@@ -1,4 +1,5 @@
 add_subdirectory(math)
 #add_subdirectory(io)
-add_subdirectory(roofit)
-
+if (ROOT_roofit_FOUND)
+  add_subdirectory(roofit)
+endif()
