<div dir="ltr"><div><div>I'm trying to see how hard it is to port my HDF5 work from VW to Squeak.<br>It was not a pleasure in VW, because that already raised some questions despite that there is a somehow detailed DLLCC manual:<br><br><a href="https://stackoverflow.com/questions/49544642/why-cant-i-pass-an-uninterpretedbytes-to-a-void-thru-dll-c-connect">https://stackoverflow.com/questions/49544642/why-cant-i-pass-an-uninterpretedbytes-to-a-void-thru-dll-c-connect</a><br><a href="https://stackoverflow.com/questions/49564024/isnt-pointer-type-checking-disabled-in-dll-c-connect-and-is-that-ok">https://stackoverflow.com/questions/49564024/isnt-pointer-type-checking-disabled-in-dll-c-connect-and-is-that-ok</a><br><br>But in Squeak, it sounds like hard++:<br></div><br><a href="https://stackoverflow.com/questions/49782651/how-one-aligns-structure-fields-in-squeak-ffi">https://stackoverflow.com/questions/49782651/how-one-aligns-structure-fields-in-squeak-ffi</a><br><a href="https://stackoverflow.com/questions/49783126/how-one-defines-a-union-type-in-squeak-ffi">https://stackoverflow.com/questions/49783126/how-one-defines-a-union-type-in-squeak-ffi</a><br><a href="https://stackoverflow.com/questions/49783443/how-one-defines-a-fixed-size-array-member-in-a-struct-in-squeak-ffi">https://stackoverflow.com/questions/49783443/how-one-defines-a-fixed-size-array-member-in-a-struct-in-squeak-ffi</a><br><a href="https://stackoverflow.com/questions/49783882/how-one-deals-with-typedefs-in-squeak-ffi">https://stackoverflow.com/questions/49783882/how-one-deals-with-typedefs-in-squeak-ffi</a><br><a href="https://stackoverflow.com/questions/49784253/how-one-deals-with-multiple-pointer-level-like-char-in-squeak-ffi">https://stackoverflow.com/questions/49784253/how-one-deals-with-multiple-pointer-level-like-char-in-squeak-ffi</a><br><a href="https://stackoverflow.com/questions/49784522/how-one-supports-both-32-and-64-bits-target-in-squeak-ffi">https://stackoverflow.com/questions/49784522/how-one-supports-both-32-and-64-bits-target-in-squeak-ffi</a><br><br>Either I'm blind, or the very light documentation that I found lacks those details <br><a href="http://wiki.squeak.org/squeak/2426">http://wiki.squeak.org/squeak/2426</a><br><br></div>I think that I could throw a few more questions (dealing with enums...) but I don't want to excede some unknown quota and start irritating a touchy SO moderator ;)<br><div><br><div><div>I'm afraid that there is no answer but "you're on your own"...<br></div><div>I'm open to studying Alien or UnifiedFFI of Pharo.<br></div><div>Or I can try and improve FFI.<br></div><div>At this stage, my trajectory has already been quite perturbed, and despite my knowledge of rocket science, I can see that I'm not going to put HDF5 on the intended orbit :(<br><br></div><div>Thoughts?<br></div><div><br><br></div></div></div></div>