Hi David,
> On 18 Jun 2019, at 16:22, David Chisnall <[email protected]> wrote:
>
>>> - descriptionForInstanceMethod: is gone. Don't use it, use the runtime
>>> functions instead.
>>
>> Thanks for the hint.
>>
>> Where would I find a list (the declaration) of these runtime functions on
>> MacOSX and GNUstep? Are they even identically named? I guess no!?
>>
>
> Here is the top hit for a DDG search for ‘Objective-C Runtime’:
>
> https://developer.apple.com/documentation/objectivec/objective-c_runtime?language=objc
>
> <https://developer.apple.com/documentation/objectivec/objective-c_runtime?language=objc>
>
> It provides you with the Objective-C Runtime API Reference. The GNUstep
> runtime also implements this interface and is source compatible
That’s great!
> (it also implements some non-portable functions, which I would suggest that
> you avoid). You can find these all in objc/runtime.h.
>
> The method that you are probably looking for is protocol_getMethodDescription.
I wonder why I haven’t found that. Thanks!
struct objc_method_description methodDesc =
protocol_getMethodDescription(_protocol, aSelector, YES, YES);
types = methodDesc.types;
This works great as long as I build with -m32. But as soon as I switch to
...
ADDITIONAL_OBJCFLAGS += -m64 -Wno-deprecated-declarations -Wno-deprecated
-Wno-format-security
ADDITIONAL_CFLAGS += -m64
ADDITIONAL_LDFLAGS += -m64
…
in GNUmakefile I get
Compiling file SRProxy.m ...
~~ ^~~~~~~~~~~~~
%lu
(unsigned long)
SRProxy.m:425:54: warning: implicit declaration of function
'protocol_getMethodDescription' is invalid in C99
[-Wimplicit-function-declaration]
struct objc_method_description methodDesc =
protocol_getMethodDescription(_protocol, aSelector, YES, YES);
^
SRProxy.m:425:41: error: variable has incomplete type 'struct
objc_method_description'
struct objc_method_description methodDesc =
protocol_getMethodDescription(_protocol, aSelector, YES, YES);
^
SRProxy.m:425:17: note: forward declaration of 'struct objc_method_description'
struct objc_method_description methodDesc =
protocol_getMethodDescription(_protocol, aSelector, YES, YES);
^
Any idea why this works for 32bit code only. I am currently trying to build
this on MacOSX 10.10. MacOSX 10.12 gave the same error!? :-(
Thanks so much,
Andreas
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