Am 01.08.2013 11:38, schrieb Michael Van Canneyt:
On Thu, 1 Aug 2013, Sven Barth wrote:
Am 01.08.2013 11:10, schrieb dev.d...@gmail.com:
And if it's allowed to dream: one time fpc will simply link against C++
directly :)
If you prefer to work in Pascal instead of C++ then you could work on
that dream by improving the cppclass code in the compiler. Linking
against static C++ class methods already works, what's (basically)
missing is support for C++ runtimes (at first the stdc++ one would be
sufficient), support for vtables and object instantiation/destruction.
How do you handle different binary formats of C++ compilers ?
Or is this meanwhile standardized ?
Support for every C++ compiler (mainly MSVC, C++ builder and GCC [LLVM
counts here as GCC]) needs to be implemented explicitely, because they
not only differ in class layout, but also in e.g. name mangling. So in
the end (if we want to support more than GCC and LLVM) we'll need to use
a directive to declare which compiler to target and this then includes a
corresponding interface unit for the runtime (like is done with
Objective C) and let the compiler generate the code correctly. Maybe
together with packages support it should be possible to interface with
multiple different compilers at once.
As a first step I'd only target GCC and LLVM as these are the main
compilers for the majority of our platforms.
Regards,
Sven
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