编译android 版QtAV时，总是提示“:-1: error: avutil is required, but compiler can not find it”

[zhangabvc]

编译提示信息如下
16:02:35: 为项目QtAV执行步骤 ...
16:02:35: 正在启动 "D:\qt\Qt5.12.2\5.12.2\android_armv7\bin\qmake.exe" E:\qtdemocode\QtAV-master\QtAV.pro -spec android-clang "CONFIG+=debug" "CONFIG+=qml_debug"

系统找不到指定的路径。
系统找不到指定的路径。
Project MESSAGE: BUILD_DIR=E:/qtdemocode/build-QtAV-Android_for_armeabi_v7a_Clang_Qt_5_12_2_for_Android_ARMv7_c2e2cb-Debug
Project MESSAGE: MAKEFILE_GENERATOR=UNIX
Project MESSAGE: target arch:
Project MESSAGE: target arch features:
Project MESSAGE: To disable config tests, you can use 1 of the following methods
Project MESSAGE: 1. create '.qmake.conf' in the root source dir, add 'CONFIG += no_config_tests'(Qt5)
Project MESSAGE: 2. pass 'CONFIG += no_config_tests' or '-config no_config_tests' to qmake
Project MESSAGE: 3. add 'CONFIG += no_config_tests' in E:/qtdemocode/QtAV-master/user.conf
Project MESSAGE: To manually set a config test result to true, disable config tests and enable config_name like above
Checking for avutil... no
Project ERROR: avutil is required, but compiler can not find it
16:02:36: 进程"D:\qt\Qt5.12.2\5.12.2\android_armv7\bin\qmake.exe"退出，退出代码 3 。
Error while building/deploying project QtAV (kit: Android for armeabi-v7a (Clang Qt 5.12.2 for Android ARMv7))
When executing step "qmake"

[zhangabvc]

我是按着这个 https://github.com/wang-bin/QtAV/wiki/Build-QtAV#build-for-android-on-windows 来做的，不知道为什么还是这样报错

[stereomatchingkiss]

1 : 有没有在path加上“mingw32-exe"的path
2 : 请透过cmd编译，我透过QtCreator也有同样的错误，不过cmd可以