bsp,am: add basic python script to integrate other AM apps

* but we should manually fix the symbol name of AM libraries

bsp/abstract-machine/.gitignore

@@ -1,2 +1,3 @@
 rtconfig.h
 files.mk
+am-apps.mk

bsp/abstract-machine/Makefile

@@ -9,6 +9,7 @@ CFLAGS += -DHAVE_CCONFIG_H -D__RTTHREAD__
 CFLAGS += -Wno-nonnull-compare
 LDFLAGS += -T extra.ld
 -include $(FILE_MK)
+-include am-apps.mk
 include $(AM_HOME)/Makefile
 
 $(RTCONFIG_H):

bsp/abstract-machine/integrate-am-apps.py

@@ -0,0 +1,34 @@
+#!/usr/bin/env python3
+
+import sys, os, shutil
+from pathlib import Path
+
+AM_HOME = Path(os.environ["AM_HOME"])
+AM_KERNELS_HOME = (AM_HOME / ".." / "am-kernels").resolve()
+app_dir_list = AM_KERNELS_HOME / "kernels" / "hello"
+ARCH = "native"
+Path("build").mkdir(exist_ok=True)
+am_app_mk_fp = open("am-apps.mk", "w")
+am_app_c_fp  = open("build/am-apps.c" , "w")
+
+def integrate(app_dir):
+    app_name = app_dir.name
+    os.system("make -j ARCH=" + ARCH + " -C " + str(app_dir))
+    dst = Path("build") / ARCH / "am-apps" / app_name
+    dst.mkdir(parents=True, exist_ok=True)
+    shutil.copytree(app_dir / "build" / ARCH / "", dst, dirs_exist_ok=True)
+    objs = dst.rglob("*.o")
+    for obj in objs:
+        os.system("objcopy --prefix-symbols=__am_" + app_name + "_ " + str(obj))
+        am_app_mk_fp.write("SRCS += " + str(obj.relative_to("build/" + ARCH)) + "\n")
+    am_app_c_fp.write(f"""extern int __am_{app_name}_main(const char *);
+static void am_{app_name}(int argc, char *argv[]) {{
+  __am_{app_name}_main(argc >= 2 ? argv[1] : "");
+}}
+MSH_CMD_EXPORT(am_{app_name}, AM {app_name});""")
+
+am_app_mk_fp.write("SRCS += build/am-apps.c\n")
+am_app_c_fp.write("#include <rtthread.h>\n")
+integrate(app_dir_list)
+am_app_mk_fp.close()
+am_app_c_fp.close()