Does x11 support cross-compiling?

[nat3Github]

Im trying to crosscompile a project from x86 to arm64 linux
but the x11 build errors with saying it cant find library x11 despite x11 (the arm64 version) being listed on my system when checking with pkgconfig --list-all:
--- stderr
thread 'main' panicked at /home/nat3/.cargo/registry/src/index.crates.io-6f17d22bba15001f/x11-2.21.0/build.rs:42:14:
called Result::unwrap() on an Err value:
pkg-config exited with status code 1

PKG_CONFIG_PATH=/home/user/rootarm/usr/lib/aarch64-linux-gnu/pkgconfig/ PKG_CONFIG_SYSROOT_DIR=/home/user/rootarm/ PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 pkg-config --libs --cflags x11 x11 >= 1.4.99.1

The system library x11 required by crate x11 was not found.
The file x11.pc needs to be installed and the PKG_CONFIG_PATH environment variable must contain its parent directory.
PKG_CONFIG_PATH contains the following:
- /home/user/rootarm/usr/lib/aarch64-linux-gnu/pkgconfig/

HINT: you may need to install a package such as x11, x11-dev or x11-devel.