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Re: Solaris vtv port breaks x32 build
- From: Ulrich Drepper <drepper at gmail dot com>
- To: Jeff Law <law at redhat dot com>
- Cc: GCC Development <gcc at gcc dot gnu dot org>, ro at cebitec dot uni-bielefeld dot de
- Date: Mon, 30 Nov 2015 21:58:56 -0500
- Subject: Re: Solaris vtv port breaks x32 build
- Authentication-results: sourceware.org; auth=none
- References: <CAOPLpQdoN06fWHOZfZPZEA=oW+9Zba5p70N5=Euyd4V4GpgoMA at mail dot gmail dot com> <565CE267 dot 5000901 at redhat dot com> <CAOPLpQc97V3_6wqZe4Ry+toi3qZHCAPMALRCzS7C8PACiTRqFg at mail dot gmail dot com> <565D026E dot 10105 at redhat dot com>
On Mon, Nov 30, 2015 at 9:14 PM, Jeff Law <law@redhat.com> wrote:
> Right, but isn't AC_COMPILE_IFELSE a compile test, not a run test?
The problem macro is _AC_COMPILER_EXEEXT_WORKS. The message is at the end.
This macro *should* work for cross-compiling but somehow it doesn't
work. In libvtv/configure $cross_compiling is not defined
appropriately. I'm configuring with the following which definitely
indicates that cross-compiling is selected.
~/gnu/gcc/configure --prefix=/usr --enable-bootstrap --enable-shared
--enable-host-shared --enable-threads=posix --with-system-zlib
--enable-__cxa_atexit --disable-libunwind-exceptions
--enable-gnu-unique-object --enable-linker-build-id
--with-linker-hash-style=gnu --enable-plugin --enable-initfini-array
--with-tune=haswell --with-multilib-list=m32,m64,mx32
--build=x86_64-redhat-linux build_alias=x86_64-redhat-linux
--enable-offload-targets=nvptx-none
--with-cuda-driver-include=/usr/local/cuda/include
--with-cuda-driver-lib=/usr/local/cuda/lib64
--host=x86_64-redhat-linux host_alias=x86_64-redhat-linux
--enable-languages=c,c++,fortran,jit,lto --enable-libmpx
--enable-gnu-indirect-function --with-system-zlib --prefix=/usr
--mandir=/usr/share/man --infodir=/usr/share/info
--enable-vtable-verify
configure:2863: checking for C compiler default output file name
configure:2885:
/home/drepper/local/gcc-builds/test-20151130/./gcc/xgcc
-B/home/drepper/local/gcc-builds/test-20151130/./gcc/ -B/us
r/x86_64-redhat-linux/bin/ -B/usr/x86_64-redhat-linux/lib/ -isystem
/usr/x86_64-redhat-linux/include -isystem /usr/x86_64-redhat-li
nux/sys-include -mx32 -g -O2 conftest.c >&5
configure:2889: $? = 0
configure:2926: result: a.out
configure:2942: checking whether the C compiler works
configure:2951: ./a.out
/home/drepper/gnu/gcc/libvtv/configure: line 2953: ./a.out: cannot
execute binary file: Exec format error