Android - APT2000 build error when project path contains non-ASCII symbols

[Eilon]

Originally opened by @janseris in dotnet/maui#5957

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Description

Putting project in a folder/directory containing some non-ASCII chars, like Czech alphabet (tested with á) breaks Android build.
This does not affect any other C# projects. I have beeing using WinForms, Blazor, WPF on this path and all has been working fine for years.
Even VS Solution, folder names and class and property names can contain these special symbols fine.
It seems like the problem is in Android tools.
I have experienced these issues with C++ compilers and other UNIX tools which live in the ASCII-only world.

Severity	Code	Description	Project	File	Line	Suppression State
Error	APT2000	System cannot find file. (2).	Tempus.Mobile.GUI	C:\Program Files\dotnet\packs\Microsoft.Android.Sdk.Windows\31.0.200-preview.14.106\tools\Xamarin.Android.Aapt2.targets	217	

Steps to Reproduce

Put project in any path containing "á" symbol.
I created a minimal repro with C:/á/ProjectFolder

Version with bug

Preview 14 (current)

Last version that worked well

Unknown/Other

Affected platforms

Android

Affected platform versions

Android

Did you find any workaround?

No response

Relevant log output

No response

[jonathanpeppers]

@janseris this works for me:

mkdir 'testá' ; cd 'testá'
dotnet new android
dotnet build -bl

If that doesn't work for you, can you attach the msbuild.binlog file that command creates? Thanks!

I did find that Release builds fail, but different error:

> dotnet build -c Release -bl
...
C:\src\maui\bin\dotnet\packs\Microsoft.Android.Sdk.Windows\32.0.300-rc.2.27\targets\Microsoft.Android.Sdk.Aot.targets(78,5): error : Precompiling failed for
 C:\src\testá\obj\Release\net6.0-android\android-arm\linked\testá.dll.

Disabling AOT with -p:RunAOTCompilation=false works around this one. ^^

[janseris]

@jonathanpeppers confirmed your behavior on my machine as well.

But for .NET MAUI the error still persists.

APT2000.MAUI.MP4

[jonathanpeppers]

@janseris can you build command line and share msbuild.binlog?

[janseris]

@jonathanpeppers can you please provide the command for CLI build for Android in MAUI? I am not familiar with that.
Thank you

[jonathanpeppers]

@janseris yes, it is above.

Try making a folder named testá and cd into it:

dotnet new android
dotnet build -bl:debug.binlog
dotnet build -c Release -bl:release.binlog

These commands will create a debug.binlog and release.binlog, we can see what both Debug & Release do.

[janseris]

testá logs.zip

However the commands you provided are not MAUI. They are some Android project commands (probably Xamarin) and they created an Android project, not MAUI.
The APT2000 build error happens for MAUI projects.

[jonathanpeppers]

@janseris can you do the same for dotnet new maui, then? Thanks!

[jonathanpeppers]

I think it does reproduce with dotnet new maui and not dotnet new android:

dotnet\packs\Microsoft.Android.Sdk.Windows\32.0.300-rc.2.27\tools\Xamarin.Android.Aapt2.targets(217,3): error APT2000: The system cannot find the file specified.

[janseris]

@jonathanpeppers yes that's it.
Here is my output for building dotnet new maui template with the commands:
testá MAUI.zip

[dellis1972]

I think it does reproduce with dotnet new maui and not dotnet new android:

dotnet\packs\Microsoft.Android.Sdk.Windows\32.0.300-rc.2.27\tools\Xamarin.Android.Aapt2.targets(217,3): error APT2000: The system cannot find the file specified.

This may well be down to aapt2 . It is odd that certain characters are triggering this though. We do have unit tests specifically for accentent characters and they are passing.