diff --git a/source/utilities/build.bas b/source/utilities/build.bas
new file mode 100644
index 000000000..400991154
--- /dev/null
+++ b/source/utilities/build.bas
@@ -0,0 +1,23 @@
+''' Removes all the temporary build files.
+''' (Various .o, .a, and ./internal/temp, etc.)
+SUB PurgeTemporaryBuildFiles (os AS STRING, mac AS LONG)
+    make$ = GetMakeExecutable$
+    IF os = "WIN" THEN
+        SHELL _HIDE "cmd /c " + make$ + " OS=win clean"
+    ELSEIF os = "LNX" THEN
+        IF mac THEN
+            SHELL _HIDE make$ + " OS=osx clean"
+        ELSE
+            SHELL _HIDE make$ + " OS=lnx clean"
+        END IF
+    END IF
+END SUB
+
+''' Returns the make executable to use, with path if necessary.
+FUNCTION GetMakeExecutable$ ()
+    IF os$ = "WIN" THEN
+        GetMakeExecutable$ = "internal\c\c_compiler\bin\mingw32-make.exe"
+    ELSE
+        GetMakeExecutable$ = "make"
+    END IF
+END FUNCTION