[FL-2052] New build system based on scons (#1269)

site_scons/site_tools/openocd.py

@@ -0,0 +1,48 @@
+from SCons.Builder import Builder
+from SCons.Action import Action
+from SCons.Defaults import Touch
+import SCons
+
+__OPENOCD_BIN = "openocd"
+
+_oocd_action = Action(
+    "${OPENOCD} ${OPENOCD_OPTS} ${OPENOCD_COMMAND}",
+    "${OOCDCOMSTR}",
+)
+
+
+def generate(env):
+    env.SetDefault(
+        OPENOCD=__OPENOCD_BIN,
+        OPENOCD_OPTS="",
+        OPENOCD_COMMAND="",
+        OOCDCOMSTR="",
+    )
+
+    env.Append(
+        BUILDERS={
+            "OOCDFlashCommand": Builder(
+                action=[
+                    _oocd_action,
+                    Touch("${TARGET}"),
+                ],
+                suffix=".flash",
+                src_suffix=".bin",
+            ),
+            "OOCDCommand": Builder(
+                action=_oocd_action,
+            ),
+        }
+    )
+
+
+def exists(env):
+    try:
+        return env["OPENOCD"]
+    except KeyError:
+        pass
+
+    if openocd := env.WhereIs(__OPENOCD_BIN):
+        return openocd
+
+    raise SCons.Errors.StopError("Could not detect openocd")