Re: Runtime / exceptions model configuration options

[Riccardo Mottola]

Hi Richard,

Richard Frith-Macdonald wrote:
> So the default is for gnustep-make to use native exceptions, but you can 
> override it using --disable-native-objc-exceptions, and you may need to be 
> aware that, if the compiler/runtime gnustep-base sees at configure time does 
> not support native exceptions, then the base configure process may override the 
> setting from when you configured make.  I don't think there should ever be a 
> problem if you configure gnustep-make to use traditional setjmp based 
> exceptions though.
>
> NB. make sure you have a clean instuall when changing this stuff ... if you 
> have some libraries/code built one way and some libraries/code built the other 
> way then you will get problems.

(I do know I need to recompile everything when switching)

sorry I missed that option :( but actually it doesn't help: I already 
had "make" going standard while base native. I hoped forcing would help 
though and I tried.

I configured and installed make with this:

./configure --prefix=/ --with-layout=gnustep 
--disable-native-objc-exceptions


then I configure base and I explictely see during configure:

checking for non-fragile-abi support... yes
checking for objc_setUncaughtExceptionHandler() in runtime... no
checking for objc_set_unexpected() in runtime... no
checking for _objc_unexpected_exception in runtime... yes
checking whether to enable native Objective-C exceptions... no
checking for objc_sync_enter... (cached) yes
checking for thread-safe +initialize in runtime... yes


yet then build gives the previously copied mismatch error

../../Headers/Foundation/NSException.h:48:2: error: "gnustep-base is 
configured
      to use 'traditional' exceptions, but you are building for 'native'
      exceptions."


but how?? maybe there is some trick missing... or configure doesn't 
"force" clang

I got around with this:

./configure OBJCFLAGS=-fno-objc-exceptions

but this is inconvenient if I have to add it to every thing I need to 
configure/compile. Do you think we can do this automatic with gnustep 
make? or maybe we already have some wizardy but it isn ot working?


Riccardo