chore: add default group automatly if needed

the name of the default group is the same with
the directory name.
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I3d889a361534adc44e3b1bedfec13efe8e1babf2

arch/arm/arm/BUILD.gn

@@ -70,10 +70,6 @@ kernel_module(module_name) {
   public_configs = [ ":public" ]
 }
 
-group("arm") {
-  public_deps = [ ":$module_name" ]
-}
-
 config("public") {
   include_dirs = [
     "include",

bsd/dev/usb/BUILD.gn

@@ -144,10 +144,6 @@ kernel_module(module_name) {
   public_configs = [ ":public" ]
 }
 
-group("usb") {
-  public_deps = [ ":$module_name" ]
-}
-
 config("public") {
   include_dirs = [ "." ]
   include_dirs += [ "$LITEOSTHIRDPARTY/FreeBSD/sys/dev/evdev" ]

lib/zlib/BUILD.gn

@@ -56,7 +56,3 @@ kernel_module(module_name) {
 config("public") {
   include_dirs = [ "$LITEOSTHIRDPARTY/zlib" ]
 }
-
-group("zlib") {
-  public_deps = [ ":$module_name" ]
-}

liteos.gni

@@ -34,6 +34,18 @@ LITEOSTHIRDPARTY = "//third_party"
 HDFTOPDIR = "//drivers/adapter/khdf/liteos"
 
 template("kernel_module") {
+  current_dir_name = get_path_info(rebase_path("."), "file")
+  if (target_name != current_dir_name) {
+    build_gn = rebase_path("BUILD.gn")
+    cmd = "if grep -q '^\s*group\s*(\s*\"$current_dir_name\"\s*)\s*{\s*\$' $build_gn; then echo true; else echo false; fi"
+    has_current_dir_group = exec_script("//build/lite/run_shell_cmd.py", [ cmd ], "value")
+    if (!has_current_dir_group) {
+      module_name = target_name
+      group(current_dir_name) {
+        public_deps = [ ":$module_name" ]
+      }
+    }
+  }
   if (defined(invoker.module_switch) && !invoker.module_switch) {
     group(target_name) {
       not_needed(invoker, "*")

net/lwip-2.1/BUILD.gn

@@ -57,7 +57,3 @@ config("public") {
   include_dirs += LWIP_PORTING_INCLUDE_DIRS
   include_dirs += LWIP_INCLUDE_DIRS
 }
-
-group("lwip-2.1") {
-  public_deps = [ ":$module_name" ]
-}