Am I right, that with fpc it is only possible to write bindings for dynamically loading shared libraries (using LoadLibrary) the hard way? Meaning declare function like:
init_alloc_root : procedure(root: PMEM_ROOT;block_size : Cardinal);extdecl;
and then using GetProcedureAddress like:
pointer(init_alloc_root) :=
GetProcedureAddress(Mysql3_comLibraryHandle,'init_alloc_root');

Is there a tool for converting sources with static bindings to this? Does h2pas have an option for this?

Thank you.

Yes, this was possible with Kylix, however, it requires the usage of PIC also inside the caller.

How would the easy way be?

Is there a tool for converting sources with static bindings to this?

Not that I know.

Does h2pas have an option for this?

-p

Jonas

Sorry, -P

Jonas

How would the easy way be?

I've just been looking into some old Kylix sources:

interface
const LibName = '';
function XftDrawCreate(display: PDisplay; win: XID; vis: PVisual;
colorm: longint): PXftDraw; cdecl;
implementation
function XftDrawCreate(display: PDisplay; win: XID; vis: PVisual;
colorm: longint): PXftDraw; cdecl; external LibName;
initialization
 if dlopen('libXft.so', RTLD_LAZY or RTLD_GLOBAL) = nil then

I can't remember if the extra declaration in the interface section was necessary.
But by simply settting Libname to empty string and using dlopen I could switch from static do dynamic afair.

Thanks for the h2pas hint.

Yes, this was possible with Kylix, however, it requires the usage of PIC also inside the caller.

Thanks for the information.
It's good to know about the h2pas option.
I was not aware of it. In the many options --help show, it is described as

-P use proc. vars for imports

I was looking for something like "dynamic"

Regards Theo

I was looking for something like "dynamic"

http://www.freepascal.org/docs-html/user/usersu84.html http://www.freepascal.org/docs-html/user/usersu84.html

leledumbo wrote

> I was looking for something like "dynamic" http://www.freepascal.org/docs-html/user/usersu84.html

That "dynamic" keyword is completely unrelated to importing external functions (both in FPC and in Delphi/Kylix).

Jonas