ubuntu 18.04 Unable to generate build files

[seven dickens]

• flutter run -d linux

Launching lib/main.dart on Linux in debug mode...
libwinmedia - 0.0.3
-------------------
Building on Linux against GTK 3.0 & WebKit2 4.0
C++ Standard: 17
CMake Error at /usr/share/cmake-3.16/Modules/FindPkgConfig.cmake:463 (message):
  A required package was not found
Call Stack (most recent call first):
  /usr/share/cmake-3.16/Modules/FindPkgConfig.cmake:643 (_pkg_check_modules_internal)
  flutter/ephemeral/.plugin_symlinks/libwinmedia/master/CMakeLists.txt:71 (pkg_check_modules)


Building Linux application...                                           
Exception: Unable to generate build files

• flutter --version

Flutter 2.8.1 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 77d935af4d • 2021-12-16 08:37:33 -0800
Engine • revision 890a5fca2e
Tools • Dart 2.15.1

[seven dickens]

https://gitmemory.cn/repo/bdlukaa/just_audio_libwinmedia/issues/4

$ sudo apt-get install libwebkit2gtk-4.0-dev