On Wednesday, September 20, 2023 at 9:26:50 AM UTC-5, Enrico Maria Giordano wrote:
Il 20/09/2023 16:13, Ron Pinkas ha scritto:
Imagine you want to define a function only for 64-bit mode compilation. >> Well, you can't:
FUNCTION MAIN()
RETURN NIL
#pragma BEGINDUMP
#ifdef _WIN64
HB_FUNC( MYFUNC64 )
{
}
#endif
#pragma ENDDUMP
In 32-bit mode:
error LNK2001: unresolved external symbol _HB_FUN_MYFUNC64
Of course you can:
#ifdef WIN64
#pragma BEGINDUMP
HB_FUNC( SCAVENGEAL )
{
}
#endif
#pragma ENDDUMP
#endif
Yes, I know, but with Harbour it works in this form too:
FUNCTION MAIN()
RETURN NIL
#pragma BEGINDUMP
#ifdef _WIN64
HB_FUNC( MYFUNC64 )
{
}
#endif
#pragma ENDDUMP
Can we fix it?
--
Enrico Maria Giordano
http://www.emagsoftware.it
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Enrico, I believe the "fix" is wrong - As the documentation in inline_c.txt clearly states:
-------
#PRAGMA BEGINDUMP
* ...
* [#PRAGMA ENDDUMP]|EOF
*
* The transition from Harbour to C* occurs when encountering the FIRST NewLine token, at the end of the #pragme BEGINDUMP directive line. The transition from C* back to Harbour occurs when encountering the FIRST NewLine token, at the *end* of the
FIRST FOUND line containing a #pragma ENDDUMP directive, or at the EOF.
*
* There may be any number of lines in such C* block. Any legal C* syntax including #directives, and any number of nested balanced {} is allowed.
*
* Misc:
*
*
* C* Syntax errors and warnings, are reported with the correct PRG source file name, and line number.
*
* No parsing of the C* code is being performed, and thus MACROS of unbalanced '{}' are allowed.
*
* This implementation is actually language independent, and will allow inclusion of any code compatible with the generated output
-----
It's up to the Programmer to make sure that the dumped section is valid in the context of the PRG compilation unit. Also, since such function clearly must be called from the PRG code at SOME TIME to be of value, then the PRG code *MUST* have such #ifdef
anyway!
Ron
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