Solaris vtv port breaks x32 build

[Jeff Law]

On 11/28/2015 08:42 AM, Ulrich Drepper wrote:
> After the Solaris vtv port was added my build of the x86 gcc with x32
> support fails.  The build is special since the kernel doesn't have x32
> support and I cannot directly run x32 binaries (they are run in a kvm
> kernel).  This is used to work well by configuring the tree with
> --build and --host etc.
>
> The changes to libvtv/configure.ac forced the execution of some code
> for all targets, specifically the AC_USE_SYSTEM_EXTENSIONS macro.
> Once I take this (and the code depending on it) out the build is once
> again fine.  Below is the change I used.  Can we revert the change
> until the Solaris port is correctly done?
What part of this requires bits to run?  I see AC_COMPILE_IFELSE, but 
not anything which obviously requires running the resulting code.


jeff