Porting gpgme.pas from GNU Pascal to FPC?
lazarus / 62-General

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snorkel · 2016-03-12 16:11

Any FPC guys think this may be possible?

http://www.gnu-pascal.de/contrib/nicola/gpgme.pas

I took a look at it but it uses GPC.pas and some of the stuff in there
does not look familiar to me, like
type
  VoidGpgmeCtx        = restricted Void;

and I don't see where it's referencing the gpgme.dll anywhere.  I
guess it's possible it does not even work on GNU pascal.

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Leledumbo · 2016-03-13 02:01

Quote from: snorkel on March 12, 2016, 05:11:40 pmAny FPC guys think
this may be possible?
Why not?
Quote from: snorkel on March 12, 2016, 05:11:40 pmI took a look at it
but it uses GPC.pas and some of the stuff in there does not look
familiar to me, like
type
  VoidGpgmeCtx        = restricted Void;
http://www.gnu-pascal.de/gpc/Restricted-Types.html
FPC doesn't implement ISO Extended Pascal, so restricted types are not
supported. Simply use macro to map that to empty string, such a type
only restricts certain operation on the underlying type, nothing else
featurewise.
Quote from: snorkel on March 12, 2016, 05:11:40 pmand I don't see
where it's referencing the gpgme.dll anywhere.  I guess it's possible
it does not even work on GNU pascal.
There's no need. Both:
Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i external
nameand
Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i external
'libname' nameare supported in both compilers. With the former, you
don't hardcode the library name and must supply it to the linker
manually.

Another thing to consider, Void is a built-in type in GPC, which
semantically equivalent to untyped in FPC, which is valid only for
parameters but requires modifier (const/var/constref) to be present .
No idea if it's allowed other than for parameter type in GPC, but if
yes, FPC doesn't have equivalent implementation. Such a type is less
likely to be a value, because it's unclear what the value is,
therefore untyped pointer might be able to replace it. No guarantee,
though.