https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69475

            Bug ID: 69475
           Summary: [x32][6]: FTBFS: configure: error: cannot compute
                    sizeof (long long)
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: glaubitz at physik dot fu-berlin.de
  Target Milestone: ---
            Target: x86_64-linux-gnux32

Hello!

gcc-6 fails to build from source on x86_64-linux-gnux32 (Debian) as apparently
the size of (long long) is not properly defined:

checking for long long... yes
checking size of long long... configure: error: in `/«PKGBUILDDIR»/build/gcc':
configure: error: cannot compute sizeof (long long)
See `config.log' for more details.
Makefile:4205: recipe for target 'configure-stage1-gcc' failed
make[4]: *** [configure-stage1-gcc] Error 77
make[4]: Leaving directory '/«PKGBUILDDIR»/build'
Makefile:24128: recipe for target 'stage1-bubble' failed
make[3]: *** [stage1-bubble] Error 2
make[3]: Leaving directory '/«PKGBUILDDIR»/build'
Makefile:24448: recipe for target 'bootstrap' failed
make[2]: *** [bootstrap] Error 2
make[2]: Leaving directory '/«PKGBUILDDIR»/build'
TTTTT Wed, 23 Dec 2015 01:56:18 +0000
s=`cat status`; rm -f status; \
if [ $s -ne 0 ] && [ -z "$NO_CONFIG_LOG_DUMP$NO_CONFIG_LOG_DUMPS" ]; then \
  for log in $(find /«PKGBUILDDIR»/build -name config.log); do \
    case "$log" in */build/build-*|*/stage1-*|*/prev-*) continue; esac; \
    echo LOGFILE START $log; \
    cat $log; \
    echo LOGFILE END $log; \

Full log available on buildd.debian.org [1]. So far, gcc-6 hasn't been built on
x32 because of this.

Cheers,
Adrian

> [1] 
> https://buildd.debian.org/status/fetch.php?pkg=gcc-6&arch=x32&ver=6-20151220-1&stamp=1450835798

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