Re: libobjc2 fails to build with gcc 5.4.0

[Niels Grewe]

Yes, it seems that gcc and clang disagree on how to interpret const. Here's a PR that addresses this particular problem:

https://github.com/gnustep/libobjc2/pull/22

Cheers,

Niels

Von: address@hidden

Gesendet: 2. April 2017 7:05 nachm.

An: address@hidden; address@hidden

Betreff: libobjc2 fails to build with gcc 5.4.0

Hey David,

It might be that libobjc2 no longer supports gcc, but in case it does, this is the result of building with Ubuntu 16.04's gcc 5.4.0:

[  1%] Building C object CMakeFiles/objc.dir/category_loader.c.o

/usr/bin/cc  -DGC_DEBUG -DGNUSTEP -DNO_LEGACY -DTYPE_DEPENDENT_DISPATCH -D__OBJC_RUNTIME_INTERNAL__=1 -Dobjc_EXPORTS  -std=gnu99  -fexceptions -fPIC   -o CMakeFiles/objc.dir/category_loader.c.o   -c /home/ivucica/projects/libobjc2/category_loader.c

In file included from /home/ivucica/projects/libobjc2/dtable.h:3:0,

                 from /home/ivucica/projects/libobjc2/category_loader.c:5:

/home/ivucica/projects/libobjc2/sarray2.h:26:35: error: initializer element is not constant

 static const uint32_t data_mask = data_size - 1;

                                   ^

/home/ivucica/projects/libobjc2/sarray2.h:55:8: error: variably modified 'data' at file scope

  void *data[data_size];

        ^

CMakeFiles/objc.dir/build.make:158: recipe for target 'CMakeFiles/objc.dir/category_loader.c.o' failed

make[2]: *** [CMakeFiles/objc.dir/category_loader.c.o] Error 1

make[2]: Leaving directory '/home/ivucica/projects/libobjc2/build'

Git commit used: e87b5c15037d4f9a02290472cb1d70d79edbdb1a