I'll need to look at the fonts to see if there's an applicable license. Otherwise, I'll look for something that's compatible with the library license.

Thank you so much, it helps with packaging
The same problem applies for the dompdf library, there is ttf files and afm files without a license for them

The AFM files included with Dompdf are for the PDF core fonts. The license for those is in the mustRead.html.

I will look at what we need to do for the DejaVu fonts. The UFM files were generated by the Dompdf team and not provided by the DejaVu team.

The AFM files included with Dompdf are for the PDF core fonts. The license for those is in the mustRead.html.

I probably missed them, a license file would be great and more explicit

I will look at what we need to do for the DejaVu fonts. The UFM files were generated by the Dompdf team and not provided by the DejaVu team.

Can you provide a way to re-build them?
We "can not" accept non human readable built files, we need to re build them from source at Debian

The UFM files are human readable. They're just a delimited text file with a format similar to the AFM format. The files were built using php-font-lib so re-building them is straightforward:

$font = FontLib\Font::load("/path/to/file.ttf");
if ($font instanceof FontLib\TrueType\Collection) {
    $font = $font->getFont(0);
}
$font->parse();
$font->saveAdobeFontMetrics(__DIR__ . '/output/' . basename($test_file) . '.ufm');

Thank you, you can close this issue now or when you cherry-picked my test if you want to

I'll keep this open so I don't forget to review that test.

Suggestions on how to handle this in php-font-lib?

Intel Clear is licensed under Apache 2.0
https://github.com/intel/clear-sans

Noto fonts are licensed under OFL
https://fonts.google.com/noto/specimen/Noto+Sans+Shavian/about

A folder for fonts in tests with a license file in each subfolder?
And if possible a txt with where each font was downloaded?

PR #130 adds that new test and modifies the font structure. I also switched from Intel Clear-Light to the W3C font Ahem, which was developed more for layout unit testing but which I thought it may prove useful in future test development since it uses glyph metrics designed for ease of testing.

Let me know if you have any feedback.