License script improvements

DEPS

@@ -51,7 +51,7 @@ vars = {
   'dart_revision': '358d0d1aa3e7ebe550ebc343aa795c7f4c136342',
 
   # WARNING: DO NOT EDIT MANUALLY
-  # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
+  # The lines between blank lines above and below are generated by a script. See ../tools/dart/create_updated_flutter_deps.py
   'dart_binaryen_rev': '7769139efbe818c7ba36d1a382db5114ebee9df8',
   'dart_boringssl_gen_rev': 'ced85ef0a00bbca77ce5a91261a5f2ae61b1e62f',
   'dart_boringssl_rev': '87f316d7748268eb56f2dc147bd593254ae93198',

ci/licenses.sh

@@ -35,14 +35,18 @@ PATH="$DART_BIN:$PATH"
 
 # Use:
 #   env VERBOSE=1 ./ci/licenses.sh
-# to turn on verbose progress report printing.
+# to turn on verbose progress report printing. Set it to 2 to also output
+# information about which patterns are taking the most time.
 QUIET="--quiet"
 if [[ "${VERBOSE}" == "1" ]]; then
   QUIET=""
 fi
+if [[ "${VERBOSE}" == "2" ]]; then
+  QUIET="--verbose"
+fi
 
 echo "Verifying license script is still happy..."
-echo "Using pub from $(command -v pub), dart from $(command -v dart)"
+echo "Using dart from: $(command -v dart)"
 
 untracked_files="$(cd "$SRC_DIR/flutter"; git status --ignored --short | grep -E "^!" | awk "{print\$2}")"
 untracked_count="$(echo "$untracked_files" | wc -l)"
@@ -58,6 +62,12 @@ fi
 
 dart --version
 
+# Runs the tests for the license script.
+function run_tests() (
+  cd "$SRC_DIR/flutter/tools/licenses"
+  find -name "*_test.dart" | xargs -n 1 dart --enable-asserts
+)
+
 # Collects the license information from the repo.
 # Runs in a subshell.
 function collect_licenses() (
@@ -117,11 +127,29 @@ function verify_licenses() (
       exitStatus=1
   fi
 
+  echo "Verifying excluded files list..."
+  if ! cmp -s "flutter/ci/licenses_golden/excluded_files" "out/license_script_output/excluded_files"; then
+      echo "============================= ERROR ============================="
+      echo "The license is excluding a different number of files than previously."
+      echo "This is only expected when new non-source files have been introduced."
+      echo "Verify that all the newly ignored files are definitely not shipped with"
+      echo "any binaries that we compile (including impellerc and Wasm)."
+      echo "If the changes look correct, update this file:"
+      echo "  ci/licenses_golden/excluded_files"
+      echo "For more information, see the script in:"
+      echo "  https://github.com/flutter/engine/tree/main/tools/licenses"
+      echo ""
+      diff -U 6 "flutter/ci/licenses_golden/excluded_files" "out/license_script_output/excluded_files"
+      echo "================================================================="
+      echo ""
+      exitStatus=1
+  fi
+
   echo "Checking license count in licenses_flutter..."
 
   local actualLicenseCount
   actualLicenseCount="$(tail -n 1 flutter/ci/licenses_golden/licenses_flutter | tr -dc '0-9')"
-  local expectedLicenseCount=19 # When changing this number: Update the error message below as well describing all expected license types.
+  local expectedLicenseCount=19 # When changing this number: Update the error message below as well describing the newly expected license types.
 
   if [[ $actualLicenseCount -ne $expectedLicenseCount ]]; then
       echo "=============================== ERROR ==============================="
@@ -145,4 +173,5 @@ function verify_licenses() (
   return $exitStatus
 )
 
+run_tests
 verify_licenses

ci/licenses_golden/licenses_gpu

@@ -1,14 +1,9 @@
 Signature: ffe64a3daaf0ad982854594ad155dd56
 
-UNUSED LICENSES:
-
-
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-USED LICENSES:
-
 ====================================================================================================
-LIBRARY: gpu
-ORIGIN: ../../../flutter/LICENSE
+LIBRARY: engine
+ORIGIN: ../../../gpu/GLES2/gl2chromium.h + ../../../gpu/LICENSE
+ORIGIN: ../../../gpu/command_buffer/client/gles2_c_lib_export.h + ../../../gpu/LICENSE
 TYPE: LicenseType.bsd
 FILE: ../../../gpu/GLES2/gl2chromium.h
 FILE: ../../../gpu/command_buffer/client/gles2_c_lib_export.h
@@ -39,4 +34,5 @@ ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ====================================================================================================
+
 Total license count: 1

ci/licenses_golden/tool_signature

@@ -1,2 +1,2 @@
-Signature: 9d0f7a4c4f53b80e33da848062bef937
+Signature: 2aaa7d1662adb75aac43db23f4bd5d97
 

impeller/compiler/BUILD.gn

@@ -61,8 +61,7 @@ impeller_component("compiler_lib") {
     "../runtime_stage",
     "//flutter/fml",
 
-    # All third_party deps must be reflected below in the impellerc_license
-    # target.
+    # All third_party deps must be included by the global license script.
     "//third_party/inja",
     "//third_party/shaderc_flutter",
     "//third_party/spirv_cross_flutter",
@@ -86,23 +85,6 @@ generated_file("impellerc_license") {
     "",
     read_file("//flutter/sky/packages/sky_engine/LICENSE", "string"),
     "",
-
-    # These licenses are ignored by the main license checker, since they are not
-    # shipped to end-application binaries and only shipped as part of developer
-    # tooling in impellerc. Add them here.
-    "## Additional open source licenses",
-    "",
-    "### inja",
-    "",
-    read_file("//third_party/inja/LICENSE", "string"),
-    "",
-    "### shaderc",
-    "",
-    read_file("//third_party/shaderc/LICENSE", "string"),
-    "",
-    "### spirv_cross",
-    "",
-    read_file("//third_party/vulkan-deps/spirv-cross/src/LICENSE", "string"),
   ]
 }