[BSP][AT32] fixed scons --dist

bsp/at32/at32f403a-start/rtconfig.py

 import os
-import sys
 
 # toolchains options
 ARCH='arm'
@@ -143,8 +142,9 @@ elif PLATFORM == 'iar':
     EXEC_PATH = EXEC_PATH + '/arm/bin/'
     POST_ACTION = 'ielftool --bin $TARGET rtthread.bin'
 
-def dist_handle(BSP_ROOT):
+def dist_handle(BSP_ROOT, dist_dir):
+    import sys
     cwd_path = os.getcwd()
     sys.path.append(os.path.join(os.path.dirname(BSP_ROOT), 'tools'))
     from sdk_dist import dist_do_building
-    dist_do_building(BSP_ROOT)
+    dist_do_building(BSP_ROOT, dist_dir)

bsp/at32/at32f407-start/rtconfig.py

@@ -141,3 +141,10 @@ elif PLATFORM == 'iar':
 
     EXEC_PATH = EXEC_PATH + '/arm/bin/'
     POST_ACTION = 'ielftool --bin $TARGET rtthread.bin'
+
+def dist_handle(BSP_ROOT, dist_dir):
+    import sys
+    cwd_path = os.getcwd()
+    sys.path.append(os.path.join(os.path.dirname(BSP_ROOT), 'tools'))
+    from sdk_dist import dist_do_building
+    dist_do_building(BSP_ROOT, dist_dir)

bsp/at32/tools/sdk_dist.py

@@ -5,15 +5,16 @@ cwd_path = os.getcwd()
 sys.path.append(os.path.join(os.path.dirname(cwd_path), 'rt-thread', 'tools'))
 
 # BSP dist function
-def dist_do_building(BSP_ROOT):
+def dist_do_building(BSP_ROOT, dist_dir):
     from mkdist import bsp_copy_files
     import rtconfig
-    
-    dist_dir  = os.path.join(BSP_ROOT, 'dist', os.path.basename(BSP_ROOT))
+
+    print("=> copy at32 bsp library")
+    library_dir = os.path.join(dist_dir, 'Libraries')
     library_path = os.path.join(os.path.dirname(BSP_ROOT), 'Libraries')
-    library_dir  = os.path.join(dist_dir, 'Libraries')
+    bsp_copy_files(os.path.join(library_path, rtconfig.BSP_LIBRARY_TYPE),
+                   os.path.join(library_dir, rtconfig.BSP_LIBRARY_TYPE))
+
     print("=> copy bsp drivers")
     bsp_copy_files(os.path.join(library_path, 'rt_drivers'), os.path.join(library_dir, 'rt_drivers'))
-    print("=> copy bsp library")
-    bsp_copy_files(os.path.join(library_path, rtconfig.BSP_LIBRARY_TYPE), os.path.join(library_dir, rtconfig.BSP_LIBRARY_TYPE))
     shutil.copyfile(os.path.join(library_path, 'Kconfig'), os.path.join(library_dir, 'Kconfig'))