> I don't know what has changed since I got things working, but I can no
> longer compile that firmware. I get errors like this:
>
> main.c:38:20: fatal error: avr/io.h: No such file or directory
There was a change in cross-base. We don't use CROSS_CPATH anymore. However,
avr-gcc does use it (and shouldn't).
(define* (cross-gcc ...
...
;; Only search target inputs, not host inputs.
;; Note: See <http://bugs.gnu.org/22186> for why not 'CPATH'.
(search-paths
(list (search-path-specification
(variable "CROSS_C_INCLUDE_PATH")
(files '("include")))
(search-path-specification
(variable "CROSS_CPLUS_INCLUDE_PATH")
(files '("include")))
(search-path-specification
(variable "CROSS_OBJC_INCLUDE_PATH")
(files '("include")))
(search-path-specification
(variable "CROSS_OBJCPLUS_INCLUDE_PATH")
(files '("include")))
(search-path-specification
(variable "CROSS_LIBRARY_PATH")
(files '("lib" "lib64")))))
(native-search-paths '())))
