[Bug libgcc/68467] New: libgcc, compilation for target m68k-linux breaks in linux_atomic.c, #define COMMA ,

[angelo70 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68467

            Bug ID: 68467
           Summary: libgcc, compilation for target m68k-linux breaks in
                    linux_atomic.c, #define COMMA ,
           Product: gcc
           Version: 5.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libgcc
          Assignee: unassigned at gcc dot gnu.org
          Reporter: angelo70 at gmail dot com
  Target Milestone: ---

Created attachment 36791
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36791&action=edit
config log

Dear all,

after had filled 68466, and applied the workaround mentioned in it, i can fully
compile gcc. Btw, inside libgcc i see only M68000 code, and not coldfire
variants.

So i am trying with different configuration options, as:

EXTRA_GCC_CONF="--enable-multilib --with-arch=cf --with-newlib
--with-system-zlib"

With config options above, i get following error compiling:

/home/angelo/archivio/aziende/sysam/buildall/m68k/gcc/./gcc/xgcc
-B/home/angelo/archivio/aziende/sysam/buildall/m68k/gcc/./gcc/
-B/home/angelo/archivio/aziende/sysam/output/m68k-linux/bin/
-B/home/angelo/archivio/aziende/sysam/output/m68k-linux/lib/ -isystem
/home/angelo/archivio/aziende/sysam/output/m68k-linux/include -isystem
/home/angelo/archivio/aziende/sysam/output/m68k-linux/sys-include    -g -O2
-mcpu=54455 -Wa,-mno-mac -O2  -g -O2 -DIN_GCC  -DCROSS_DIRECTORY_STRUCTURE  -W
-Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes
-Wmissing-prototypes -Wold-style-definition  -isystem ./include   -fPIC -g
-DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc  -fPIC -I.
-I. -I../../.././gcc
-I/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc
-I/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/.
-I/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/../gcc
-I/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/../include 
-DHAVE_CC_TLS  -o linux-atomic.o -MT linux-atomic.o -MD -MP -MF
linux-atomic.dep  -c
/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/config/m68k/linux-atomic.c
-fvisibility=hidden -DHIDE_EXPORTS
/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/config/m68k/linux-atomic.c:
In function '__sync_lock_test_and_set_4':
/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/config/m68k/linux-atomic.c:207:15:
warning: left-hand operand of comma expression has no effect [-Wunused-value]
 #define COMMA ,
               ^
/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/config/m68k/linux-atomic.c:80:31:
note: in definition of macro 'WORD_SYNC_OP'
       newval = PFX_OP (oldval INF_OP val);    \


Compiling on x86_64 os
$ gcc --version
gcc (Debian 5.2.1-21) 5.2.1 20151003
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.



I attach configure and build logs.

Regards