This is a library to help develop applications for the Xtensa CPU that comes with the DSi and 3DS consoles. It is provided as part of BlocksDS, but it can also be used as a standalone library.
Please, report issues here.
The Xtensa toolchain is currently distributed by Wonderful Toolchain. Currently it's only available on Linux, not Windows.
Install the Xtensa toolchain of Wonderful Toolchain:
wf-pacman -Syu
wf-pacman -S toolchain-gcc-xtensa-elfNow, build the library:
make