Hi Guile users and devs, I'm the current maintainer of Lepton EDA suite, an about five year old fork of geda-gaf with accent to moving more functionality to Scheme code. I'm not sure if it is acceptable to advertise it here, please let me know if not. I just know several Guix packagers are reading this mailing list and would like to announce a new version of Lepton, 1.9.14 has been released on April, 7:
https://github.com/lepton-eda/lepton-eda/releases/tag/1.9.14-20210407 Lepton supports Guile 2.0, 2.2, and 3.0. There are lots of C code involved and one of our current goals is untangling it and moving our Scheme functionality to FFI as much as possible. Hence, the issue I recently stumbled upon. Having the following code: (define-public (sys-data-dirs) "Returns a list of search directories for system data." (let ((pointer (eda_get_system_data_dirs))) (let loop ((num 0) (ls '())) (let ((string-pointer (dereference-pointer (make-pointer (+ (pointer-address pointer) (* num (alignof '*))))))) (if (null-pointer? string-pointer) (reverse ls) (loop (1+ num) (cons (pointer->string string-pointer) ls))))))) is it permissible to use 'alignof' (or 'sizeof') this way here, if at all? Or some pitfalls may exist? The function gets the C array of strings and translates them into a Scheme list. I just don't want to write an additional C layer to process the array, but I'm in doubt if it could shoot me in the foot on some OS/arch combinations. Thanks in advance, Vladimir
