Bug#865059: gcc-7: Please temporarily build with --disable-libcilkrts on sparc64

[John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>]

Source: gcc-7
Version: 7.1.0-7
Severity: important
User: debian-sparc@lists.debian.org
Usertags: sparc64

Hello!

We're currently observing that the gcc-7 testsuite is crashing the kernel
on the buildds when building with many parallel jobs (>= 16).

It turned out that the offending test is cilkplus and until the kernel
has been fixed, please make sure to build gcc-7 on sparc* with cilk
disabled, e.g. by passing --disable-libcilkrts to configure:

ifneq (,$(findstring sparc64-linux,$(DEB_TARGET_GNU_TYPE)))
  CONFARGS += --with-cpu-32=ultrasparc --disable-libcilkrts
  ifeq ($(biarch32),yes)
    CONFARGS += --enable-targets=all
  endif
endif

Not sure whether sparc64 should also be removed from rules.defs:cilkrts_archs
for now but I have done that now just to be safe.

We'll let you know once the issue has been fixed in the kernel and
libcilkrts can be enabled again.

Thanks,
Adrian

--
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz@debian.org
`. `'   Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913