i have these GNU macro:
#if defined __GNUC__
#define EVENT [[gnu::weak]]
#elif defined __clang__
#define EVENT [[llvm::weak]]
#endif
#define IS_EVENT_DEFINED(sym) (static_cast<bool>(sym))these macro works fine. and help me test if the function(even with a prototype) was defined.
my problem is can i convert
[[gnu::weak]]to Visual Studio code(for be compatible)?
because the Visual Studio don't have 'weak'
I read https://social.msdn.microsoft.com/Forums/vstudio/en-US/645d3065-85db-4ebf-ac20-70325dcc9318/c-how-use-weak-macro?forum=vclanguage and feel that you received some excellent replies there. I do get the feeling you want GCC in Visual Studio without any work. I could be wrong but that's the feeling I got from reading that long discussion.
That said the most often this sort of thing comes up is someone is just wanting to use GCC code without a re-write. Sometimes it's unavoidable.
Here's what is likely going on:
This is something that doesn't work in the same way in Windows
So it's a PITR.
to be honest i don't get what i need.
i have 1 code for detect if the class have a function(even if is a prototype), but no for test if the function is defined :(
these macro help me do that, but isn't compatible with Visual Studio.
so let me ask you: how can i test if the function was defined?
I have to write that in decades of coding, never needed this. I see others also wrote same at https://stackoverflow.com/questions/8814705/how-to-check-if-the-function-exists-in-c-c
How would such compile if you were to call a non-existant function?
i'm sorry, but do youy know how works 'weak' for, maybe, i create my own?
(the virtual functions from base class, on child\derived class, must have a prototype for i define them outside the class... i hate these rule :( )
@cambalinho. For this round I think you received some excellent answers. Since GCC is on Windows and you need this, it's time to use the GCC instead.
In fact, you can use GCC in Visual Studio. Examples? https://www.google.com/search?q=how+to+use+gcc+in+Visual+Studio
We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.
