[Bug testsuite/80759] gcc.target/x86_64/abi/ms-sysv FAILs

[daniel.santos at pobox dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80759

--- Comment #16 from Daniel Santos <daniel.santos at pobox dot com> ---
Sorry for my delayed response.  I'm working on adding extended tests triggered
by an environment variable (because I needed to better validate somebody else's
changes to my -mcall-ms2sysv-xlogues feature and I encountered a flaw in my
test program when the header is generated with a -p range of 7 or higher.

(In reply to ro@CeBiTec.Uni-Bielefeld.DE from comment #14)
> You need to make certain to have the necessary 32-bit libraries and
> headers.  Apart from that, configure --target=i686-pc-linux-gnu
> --enable-targets=all should be enough, together with CC='gcc -m32'
> CXX='g++ -m32'.  I don't pass --enable-multilib, this happens by default.

I seem to have encountered some type of bug in something here (autoconf
maybe?).  When the build gets to running configure on libgcc, it fails with:

configure: error: cannot compute suffix of object files: cannot compile
See `config.log' for more details.
make[1]: *** [Makefile:13549: configure-target-libgcc] Error 1
make[1]: Leaving directory
'/home/daniel/proj/sys/gcc/builds/testsuite-fixes-i686-pc-linux-gnu'
make: *** [Makefile:898: all] Error 2


The failure is actually when it's calling exec with -- and the option isn't
recognized:


configure:3469:
/home/daniel/proj/sys/gcc/builds/testsuite-fixes-i686-pc-linux-gnu/./gcc/xgcc
-B/home/daniel/proj/sys/gcc/builds/testsuite-fixes-i686-pc-linux-gnu/./gc
c/ -B/usr/local/i686-pc-linux-gnu/bin/ -B/usr/local/i686-pc-linux-gnu/lib/
-isystem /usr/local/i686-pc-linux-gnu/include -isystem
/usr/local/i686-pc-linux-gnu/sys-incl
ude    -o conftest -g -O2   conftest.c  >&5
/home/daniel/proj/sys/gcc/builds/testsuite-fixes-i686-pc-linux-gnu/./gcc/as:
line 106: exec: --: invalid option
exec: usage: exec [-cl] [-a name] [command [arguments ...]] [redirection ...]
configure:3472: $? = 1
configure:3660: checking for suffix of object files
configure:3682:
/home/daniel/proj/sys/gcc/builds/testsuite-fixes-i686-pc-linux-gnu/./gcc/xgcc
-B/home/daniel/proj/sys/gcc/builds/testsuite-fixes-i686-pc-linux-gnu/./gc
c/ -B/usr/local/i686-pc-linux-gnu/bin/ -B/usr/local/i686-pc-linux-gnu/lib/
-isystem /usr/local/i686-pc-linux-gnu/include -isystem
/usr/local/i686-pc-linux-gnu/sys-incl
ude    -c -g -O2  conftest.c >&5
/home/daniel/proj/sys/gcc/builds/testsuite-fixes-i686-pc-linux-gnu/./gcc/as:
line 106: exec: --: invalid option
exec: usage: exec [-cl] [-a name] [command [arguments ...]] [redirection ...]
configure:3686: $? = 1


I don't fancy myself an autotools expert, so I'm not yet certain that it's a
bug.  I'm using gentoo with 

app-shells/bash-4.3_p48-r1
sys-devel/autoconf-2.64 (among others)
sys-devel/binutils-2.26.1

My spidy-sense tells me to try out binutils 2.27 or some such.

I'll get back on the rest of this soon.