build system: use makefile directly, not from template

.gitignore

@@ -10,7 +10,7 @@ build/
 # GNU-style build system
 /configure
 /build-system/config.mk
-/Makefile
+/.config.mk
 
 # Editor files
 \#*\#

build-system/configure.py

@@ -14,7 +14,7 @@ if getattr(tbc, "serialversion", 0) < 2:
 
 b = tbc.BuildConfig()
 b.enable_prefix()
-b.enable_configmk()
+b.enable_configmk(dotfile=True)
 b.add_tool(tbc.PosixTool("make"))
 b.add_tool(tbc.PosixTool("zip"))
 b.add_tool(tbc.PosixTool("find"))
@@ -23,6 +23,3 @@ b.add_tool(tbc.NodeJsTool(version_spec=">=12"))
 b.add_tool(tbc.GenericTool("npm"))
 b.add_tool(tbc.GenericTool("pnpm", hint="Use 'sudo npm install -g pnpm' to install."))
 b.run()
-
-print("copying Makefile")
-shutil.copyfile("build-system/Makefile", "Makefile")