LibTTF has a concrete dependency on LibGfx for things like Gfx::Bitmap,
and LibGfx has a concrete dependency in the TTF::Font class in
Gfx::FontDatabase. This circular dependency works fine for Serenity and
Lagom Linux builds of the two libraries. It also works fine for static
library builds on Lagom macOS builds.
However, future changes will make Lagom use shared libraries, and
circular library dependencies are not tolerated in macOS.
All GUI applications currently load all TTF fonts on startup
(to populate the Gfx::FontDatabase. This could probably be smarter.)
Before this patch, everyone would open the files and read them into
heap-allocated storage. Now we simply mmap() them instead. :^)
SPDX License Identifiers are a more compact / standardized
way of representing file license information.
See: https://spdx.dev/resources/use/#identifiers
This was done with the `ambr` search and replace tool.
ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
