Re: [suse-programming-e] [SuSE 8.2] gcc 3.3.1-0 update leads to compile errors in glibc-devel files

22 Aug 2003

      Thorben Kröger  [Fri, 22 Aug 2003 22:58:04 +0200]:
...
However, some programs do not compile anymore (in this case kdemultimedia) 
because of errors in a glibc-devel file:
...
Compiling kdemultimedia CVS: 
In file included from /usr/include/linux/byteorder/little_endian.h:11,
                 from /usr/include/asm/byteorder.h:32,
                 from /usr/include/linux/cdrom.h:14,
                 from cdromAccess_Linux.cpp:17,
                 from cdromAccess.cpp:30:
/usr/include/linux/byteorder/swab.h: In function `const __u32
   __fswab24(unsigned int)':
/usr/include/linux/byteorder/swab.h:174: error: ISO C++ forbids braced-groups
   within expressions
For the time being try editing the file yourself. First make a backup copy
of the file. Then change these macros

#define ___swab16(x) \
({ \
        __u16 __x = (x); \
        ((__u16)( \
                (((__u16)(__x) & (__u16)0x00ffU) << 8) | \
                (((__u16)(__x) & (__u16)0xff00U) >> 8) )); \
})

So they look like this:

#define ___swab16(x) \
(__extension__{ \
        __u16 __x = (x); \
        ((__u16)( \
                (((__u16)(__x) & (__u16)0x00ffU) << 8) | \
                (((__u16)(__x) & (__u16)0xff00U) >> 8) )); \
})

i.e. add __extension__ before the braced group. This should do the trick.
I'll talk with my colleague whether or not to put a modified glibc-devel in
/pub/projects/gcc/8.2 sometime next week.

In the future *please* report things like this at
http://www.suse.de/feedback as I clearly stated in the READMEs (if you
haven't already done so)! Otherwise chances are very high that we'll never
notice it.

Philipp
...
/usr/include/linux/byteorder/swab.h:174: error: ISO C++ forbids braced-groups
   within expressions
/usr/include/linux/byteorder/swab.h: In function `__u32 __swab24p(__u32*)':
/usr/include/linux/byteorder/swab.h:178: error: ISO C++ forbids braced-groups
   within expressions
/usr/include/linux/byteorder/swab.h:178: error: ISO C++ forbids braced-groups
   within expressions
/usr/include/linux/byteorder/swab.h: In function `void __swab24s(__u32*)':
/usr/include/linux/byteorder/swab.h:182: error: ISO C++ forbids braced-groups
   within expressions
/usr/include/linux/byteorder/swab.h:182: error: ISO C++ forbids braced-groups
   within expressions
make[4]: *** [cdromAccess.lo] Fehler 1
I didn't find an up-to-date SuSE rpm for glibc and glibc-devel. The version 
shipped with 8.2 is 2.3.2-6...
Who can help me here? I don't know what to do...
Please CC me, I'm not in this list.
Thanks a lot in advance :-)
Thorben
-- 
Philipp Thomas                   work: pthomas@suse.de
                              private: philipp.thomas@t-link.de