Makefile: Add ppc64le target

README.md

@@ -236,9 +236,18 @@ The following instructions will fetch Qt from your distribution's repositories i
 
 4. Build
 
+    If on x86-64:
+
     ```
     make release -j4
     ```
+
+    If on ppc64le:
+
+    ```
+    make release-linux-ppc64le -j4
+    ```
+
     \* `4` - number of CPU threads to use  
     \* Add `CMAKE_PREFIX_PATH` enviroment variable to set a custom Qt install directory, e.g. `CMAKE_PREFIX_PATH=$HOME/Qt/5.9.7/gcc_64 make release -j4`