Hi @kblocalflywheel,
That’s a composer package. You shouldn’t don’t need to compile anything. Was that recommended by Statamatic?
Also, here’s another post for compiling extensions bundled with PHP. The instructions should still be applicable to compiling and using the exif extension: How can I enable the PHP BC Math extension for a site?
In the meantime, I’ll make a note to ensure that exif is properly included in an upcoming Local update.