add build single target function

BUILD.gn

@@ -16,11 +16,15 @@ import("//build/lite/ndk/ndk.gni")
 
 group("ohos") {
     deps = []
-    product_cfg = read_file("//build/lite/product/${product}.json", "json")
-    foreach(subsystem, product_cfg.subsystem) {
-        foreach(component, subsystem.component) {
-            deps += [ component.dir ]
+    if (ohos_build_target == "") {
+        product_cfg = read_file("//build/lite/product/${product}.json", "json")
+        foreach(subsystem, product_cfg.subsystem) {
+            foreach(component, subsystem.component) {
+                deps += [ component.dir ]
+            }
         }
+    } else {
+        deps += [ ohos_build_target ]
     }
 }
 

compile.py

@@ -27,6 +27,8 @@ def add_options(parser):
     parser.add_argument('-b', '--build_type', help='release or debug version.',
                         nargs=1, default=['release'])
     parser.add_argument('-t', '--test', help='Compile test suit', nargs='*')
+    parser.add_argument('-T', '--target', help='Compile single target',
+                        nargs=1, default=[''])
     parser.add_argument('-n', '--ndk', help='Compile ndk', action='store_true')
 
 

config.ini

@@ -18,6 +18,8 @@ test=
 test_args=ohos_xts_test_args = "%(test)s"
 compiler_path=
 compiler_args=ohos_build_compiler_dir="%(compiler_path)s"
+build_target=
+build_target_args=ohos_build_target = "%(build_target)s"
 
 [ndk]
 ndk_path=

config.py

@@ -32,6 +32,7 @@ class Config():
     def __init__(self, args):
         self.product = args.product[0]
         self.build_type = args.build_type[0]
+        self.build_target = args.target[0]
         self.__set_path()
         self.config = os.path.join(self.get_build_path(), 'config.ini')
         self.log_path = os.path.join(self.get_out_path(), 'build.log')
@@ -100,8 +101,10 @@ class Config():
     def get_gn_args(self):
         self.cfg.set('gn_args', 'product', self.product)
         self.cfg.set('gn_args', 'build_type', self.build_type)
+        self.cfg.set('gn_args', 'build_target', self.build_target)
         self.args_list.append(self.cfg.get('gn_args', 'product_args'))
         self.args_list.append(self.cfg.get('gn_args', 'build_type_args'))
+        self.args_list.append(self.cfg.get('gn_args', 'build_target_args'))
         return " ".join(self.args_list)
 
 

ohos_var.gni

@@ -15,6 +15,7 @@ declare_args() {
     product = ""
     # "debug" or "release"
     ohos_build_type = "debug"
+    ohos_build_target = ""
     ohos_build_compiler_dir = ""
 }