On Mon, Nov 30, 2015 at 9:14 PM, Jeff Law <l...@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
