+from a build directory. For example, if you want to build in the source tree,
+run:
+
+ cmake .
+
+Then you can use make as you normally would (pass -j <count> to perform <count>
+jobs in parallel).
+
+You can also use the Ninja generator of cmake, to do that pass
+ -G Ninja
+to the cmake invocation, and then use ninja instead of make.