$OpenBSD: patch-qtbase_qmake_generators_makefile_cpp,v 1.2 2015/04/19 13:18:28 zhuk Exp $
Don't special case GNU make, BSD make isn't that bad, too.
--- qtbase/qmake/generators/makefile.cpp.ports.orig	Tue Feb 17 07:56:37 2015
+++ qtbase/qmake/generators/makefile.cpp	Wed Apr  8 00:38:30 2015
@@ -707,7 +707,7 @@ MakefileGenerator::init()
         }
     }
 
-    if(noIO() || !doDepends() || project->isActiveConfig("GNUmake"))
+    if(noIO() || !doDepends())
         QMakeSourceFileInfo::setDependencyMode(QMakeSourceFileInfo::NonRecursive);
     for(x = 0; x < compilers.count(); ++x)
         initCompiler(compilers.at(x));
