Am 07.04.2011 09:37, schrieb Skybuck Flying:
(Side question: can an RTL actually be a runtime library instead of
being compiled into applications ?)
Runtime packages are yet a todo and not implemented.
However for the application which it is trying to compile needs to run
on a different platform and thus
the application needs to either be linked to that platform RTL or it
needs to have that platform RTL embedded into it.
And that's what free pascal more or less seems to do... it embeds "a
target platform RTL" into the application that it tries to compile.
Because that RTL is just Pascal code as well and the to-be-compiled
application uses that units and thus they need to be compiled in. Simple
as that.
Every compiler can compile the RTL for its target, as well as other
applications.
No the compiler cannot compile the RTL for it's target because the
compiler does not have
the assembly yet to output the RTL ?
Yes, the compiler can compile the RTL for its target if the compiler is
configured for the same CPU as the target has.
So at the very minimum the compiler needs to produce assembler output
and for that it needs
some kind of internal assembler-outputter ;)
A compiler always needs to output assembler at the end (in one form or
the other...), that the use of a compiler.
Regards,
Sven
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