OpenWrt, gcc-linaro-4.7-2012.10 won't compile for target x86_64, but will for X86

[Bill Ross]

'net seach comes up empty.
Buildsys: Centos 6, VM
May need a guru to ssh in to sort this out.

Further info at:

https://dev.openwrt.org/ticket/12541#ticket

Fail:
x86_64-openwrt-linux-gnu-gcc -c -DIN_GCC -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Wold-style-definition -Wc++-compat -DHAVE_CONFIG_H -I. -I. -I../.././gcc -I../.././gcc/. -I../.././gcc/../include -I../.././gcc/../libcpp/include -I/home/rossb/OpenWrt/x86_64/r34389/trunk/build_dir/target-x86_64_eglibc-2.16/gcc-linaro-4.7-2012.10/host-x86_64-openwrt-linux-gnu/gmp -I/home/rossb/OpenWrt/x86_64/r34389/trunk/build_dir/target-x86_64_eglibc-2.16/gcc-linaro-4.7-2012.10/gmp -I/home/rossb/OpenWrt/x86_64/r34389/trunk/build_dir/target-x86_64_eglibc-2.16/gcc-linaro-4.7-2012.10/host-x86_64-openwrt-linux-gnu/mpfr -I/home/rossb/OpenWrt/x86_64/r34389/trunk/build_dir/target-x86_64_eglibc-2.16/gcc-linaro-4.7-2012.10/mpfr -I/home/rossb/OpenWrt/x86_64/r34389/trunk/build_dir/target-x86_64_eglibc-2.16/gcc-linaro-4.7-2012.10/mpc/src -I../.././gcc/../libdecnumber -I../.././gcc/../libdecnumber/dpd -I../libdecnumber \
  ../.././gcc/config/i386/i386.c -o i386.o
cc1: note: someone does not honour COPTS correctly, passed 0 times
../.././gcc/config/i386/i386.c: In function 'ix86_expand_multi_arg_builtin':
../.././gcc/config/i386/i386.c:27917:3: error: duplicate case value
../.././gcc/config/i386/i386.c:27916:3: error: previously used here
../.././gcc/config/i386/i386.c:27918:3: error: duplicate case value
../.././gcc/config/i386/i386.c:27916:3: error: previously used here
../.././gcc/config/i386/i386.c:27919:3: error: duplicate case value
../.././gcc/config/i386/i386.c:27916:3: error: previously used here
../.././gcc/config/i386/i386.c:27922:3: error: duplicate case value
../.././gcc/config/i386/i386.c:27916:3: error: previously used here
../.././gcc/config/i386/i386.c:27925:3: error: duplicate case value
../.././gcc/config/i386/i386.c:27916:3: error: previously used here
../.././gcc/config/i386/i386.c:27928:3: error: duplicate case value
../.././gcc/config/i386/i386.c:27916:3: error: previously used here
../.././gcc/config/i386/i386.c:27931:3: error: duplicate case value
../.././gcc/config/i386/i386.c:27916:3: error: previously used here
../.././gcc/config/i386/i386.c: In function 'ix86_expand_args_builtin':
../.././gcc/config/i386/i386.c:28854:8: error: duplicate case value
../.././gcc/config/i386/i386.c:28853:8: error: previously used here
../.././gcc/config/i386/i386.c:28855:8: error: duplicate case value
../.././gcc/config/i386/i386.c:28853:8: error: previously used here
../.././gcc/config/i386/i386.c:28856:8: error: duplicate case value
../.././gcc/config/i386/i386.c:28853:8: error: previously used here
make[5]: *** [i386.o] Error 1

Leaving directory `/home/rossb/OpenWrt/x86_64/r34389/trunk/build_dir/target-x86_64_eglibc-2.16/gcc-linaro-4.7-2012.10/host-x86_64-openwrt-linux-gnu/gcc'

[Michael Hope (michaelh1)]

Hi Bill. We build both x86_64 and i386 as part of every commit and as part of the release process and haven't seen this fault. Could you provide a test case that reproduces the fault?

[Bill Ross (q-rossb)]

Hi Michael;

Testcase?

Note that this is cross-compile, target X86_64, creating a gcc package for OpenWrt.

I am working out of OpenWrt trunk and, to patch it (other build failures) to get to the point that gcc can actually be compiled is a lot of work. This is bleeding edge stuff. OpenWrt team is not too interested in X86_64.
There are three choices.

a) I can send you instructions to replicate my build env - lotta work
b) I can tar up my build / target system and you can install - lotta work
c) I can provide you SSH credentials so you can see / debug for yourself on my build system

Option "c" is less work, we can do it interactively and less risk (a,b may have env dependencies that change behaviur for you)

I can also provide a full build log, if desired.

Please advise regarding how you want to proceed.

Note that I am an engineer, so, am able to assist.

Regards;
Bill