Updating wscripts to use custom tasks

src/boot/wscript

@@ -17,14 +17,6 @@ def configure(ctx):
         '-T', lds_path,
     ])
     ctx.env.append_value('SECTIONS_EFI', [
-        "-j .text",
-        "-j .sdata",
-        "-j .data",
-        "-j .dynamic",
-        "-j .dynsym",
-        "-j .rel",
-        "-j .rela",
-        "-j .reloc",
     ])
 
 def build(bld):
@@ -37,11 +29,33 @@ def build(bld):
         use         = 'EFI',
     )
 
-    bld(
-        rule = "${objcopy} ${SECTIONS_EFI} --target=efi-app-${POPCORN_ARCH} ${SRC} ${TGT}",
-        source = "boot.elf",
-        target = "boot.efi",
-    )
+    from waflib.Task import Task
+    class make_efi(Task):
+        color = 'YELLOW'
+        def keyword(self):
+            return "Creating"
+        def __str__(self):
+            node = self.outputs[0]
+            return node.path_from(node.ctx.launch_node())
+        def run(self):
+            from subprocess import check_call as call
+
+            args = self.env.objcopy
+            sections = [".text", ".sdata", ".data", ".dynamic",
+                        ".dynsym", ".rel", ".rela", ".reloc"]
+            for s in sections: args.extend(['-j', s])
+            args.append('--target=efi-app-' + self.env.POPCORN_ARCH)
+            args.append(self.inputs[0].abspath())
+            args.append(self.outputs[0].abspath())
+            call(args)
+
+    src = bld.path
+    out = bld.path.get_bld()
+
+    efi = make_efi(env=bld.env)
+    efi.set_inputs([out.make_node("boot.elf")])
+    efi.set_outputs([out.make_node("boot.efi")])
+    bld.add_to_group(efi)
 
 
 # vim: ft=python et sw=4

src/kernel/wscript

@@ -19,10 +19,25 @@ def build(bld):
         linkflags = "-T {}".format(lds),
     )
 
-    bld(
-        source = bld.env.KERNEL_FILENAME,
-        target = "{}/kernel.dump".format(bld.out_dir),
-        rule = "objdump -D ${SRC} > ${TGT}",
-    )
+    from waflib.Task import Task
+    class objdump(Task):
+        color = 'PINK'
+        def keyword(self):
+            return "Dumping"
+        def __str__(self):
+            node = self.outputs[0]
+            return node.path_from(node.ctx.launch_node())
+        def run(self):
+            from subprocess import check_output
+            args = self.env.objdump + ["-D", self.inputs[0].abspath()]
+            with file(self.outputs[0].abspath(), 'w') as output:
+                output.write(check_output(args))
+
+    out = bld.path.get_bld()
+
+    dump = objdump(env=bld.env)
+    dump.set_inputs([out.make_node(bld.env.KERNEL_FILENAME)])
+    dump.set_outputs([out.make_node("kernel.dump")])
+    bld.add_to_group(dump)
 
 # vim: ft=python et

wscript

@@ -188,12 +188,15 @@ def build(bld):
         bld.recurse(join("src", "kernel"))
 
         src = bld.path
-        out = bld.root.make_node(bld.out_dir)
+        out = bld.path.get_bld()
         kernel_name = bld.env.KERNEL_FILENAME
 
+        image = out.make_node("popcorn.img")
+        font = out.make_node("screenfont.psf")
+
         bld(
             source = src.make_node(join("assets", "floppy.img")),
-            target = out.make_node("popcorn.img"),
+            target = image,
             rule = "cp ${SRC} ${TGT}",
         )
 
@@ -204,18 +207,36 @@ def build(bld):
         )
 
         bld(
-            source = [
-                out.make_node(join("src", "boot", "boot.efi")),
-                out.make_node(join("src", "kernel", kernel_name)),
-                src.make_node(join("assets", "fonts", bld.env.FONT_NAME)),
-            ],
-            rule = "; ".join([
-                "${mcopy} -i popcorn.img ${SRC[0]} ::/efi/boot/bootx64.efi",
-                "${mcopy} -i popcorn.img ${SRC[1]} ::/",
-                "${mcopy} -i popcorn.img ${SRC[2]} ::/screenfont.psf",
-            ]),
+            source = src.make_node(join("assets", "fonts", bld.env.FONT_NAME)),
+            target = font,
+            rule = "cp ${SRC} ${TGT}",
         )
 
+        from waflib.Task import Task
+        class mcopy(Task):
+            color = 'YELLOW'
+            def keyword(self):
+                return "Updating"
+            def __str__(self):
+                node = self.inputs[0]
+                return node.path_from(node.ctx.launch_node())
+            def run(self):
+                from subprocess import check_call as call
+                args = self.env.mcopy + ["-i", self.inputs[0].abspath(), "-D", "o"]
+                b_args = args + [self.inputs[1].abspath(), "::/efi/boot/bootx64.efi"]
+                call(b_args)
+                for inp in self.inputs[2:]:
+                    call(args + [inp.abspath(), "::/"])
+
+        copy_img = mcopy(env = bld.env)
+        copy_img.set_inputs([
+            image,
+            out.make_node(join("src", "boot", "boot.efi")),
+            out.make_node(join("src", "kernel", kernel_name)),
+            font,
+        ])
+        bld.add_to_group(copy_img)
+
     elif bld.variant == 'tests':
         for mod_path in bld.env.MODULES:
             bld.recurse(mod_path)