Add ability to stamp fuchsia packages with API level (#29851)

Author: chaselatta

DEPS

@@ -99,7 +99,7 @@ allowed_hosts = [
 ]
 
 deps = {
-  'src': 'https://github.com/flutter/buildroot.git' + '@' + '0b267aac6794712a6d9d0f31dda3f844325d0258',
+  'src': 'https://github.com/flutter/buildroot.git' + '@' + '42be4395efc85e455bbdd555ef2791615338dbea',
 
    # Fuchsia compatibility
    #

tools/fuchsia/fuchsia_archive.gni

@@ -2,6 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/fuchsia/config.gni")
 import("//flutter/tools/fuchsia/fuchsia_debug_symbols.gni")
 import("//flutter/tools/fuchsia/fuchsia_libs.gni")
 
@@ -149,6 +150,14 @@ template("_fuchsia_archive") {
       "--manifest-json-file",
       rebase_path(manifest_json_file, root_build_dir),
     ]
+
+    if (fuchsia_target_api_level != -1) {
+      args += [
+        "--api-level",
+        "${fuchsia_target_api_level}",
+      ]
+    }
+
     outputs = [
       manifest_json_file,
       "${far_base_dir}.manifest",

tools/fuchsia/gen_package.py

@@ -63,6 +63,8 @@ def main():
       '--manifest-json-file', dest='manifest_json_file', action='store', required=True)
   parser.add_argument(
       '--far-name', dest='far_name', action='store', required=False)
+  parser.add_argument(
+      '--api-level', dest='api_level', action='store', required=False)
 
   args = parser.parse_args()
 
@@ -98,10 +100,18 @@ def main():
   # Use check_output so if anything goes wrong we get the output.
   try:
 
+    build_command = ['build', '--output-package-manifest', args.manifest_json_file]
+
+    if args.api_level is not None:
+      build_command = ['--api-level', args.api_level] + build_command
+
+    archive_command = ['archive', '--output='+ os.path.join(os.path.dirname(output_dir), args.far_name + "-0")]
+
     pm_commands = [
-        ['build', '--output-package-manifest', args.manifest_json_file],
-        ['archive', '--output='+ os.path.join(os.path.dirname(output_dir), args.far_name + "-0")],
+        build_command,
+        archive_command
     ]
+
     for pm_command in pm_commands:
       subprocess.check_output(pm_command_base + pm_command)
   except subprocess.CalledProcessError as e:

tools/gn

@@ -404,6 +404,9 @@ def to_gn_args(args):
     if args.target_os in ['android'] and gn_args['target_cpu'] in ['x64' , 'arm64']:
       gn_args['dart_use_compressed_pointers'] = True
 
+    if args.fuchsia_target_api_level is not None:
+      gn_args['fuchsia_target_api_level'] = args.fuchsia_target_api_level
+
     return gn_args
 
 def parse_args(args):
@@ -509,6 +512,8 @@ def parse_args(args):
                       'true and is enabled on CI.')
   parser.add_argument('--no-prebuilt-dart-sdk', dest='prebuilt_dart_sdk', action='store_false')
 
+  parser.add_argument('--fuchsia-target-api-level', dest='fuchsia_target_api_level')
+
   # Sanitizers.
   parser.add_argument('--asan', default=False, action='store_true')
   parser.add_argument('--lsan', default=False, action='store_true')