Hmm actually the fedora-i386-cross image is:
gcc (GCC) 10.2.1 20201125 (Red Hat 10.2.1-9)
with CROSS_CC_GUEST_CFLAGS=-m32 so I wonder what the difference is
between that and:
i686-linux-gnu-gcc -m32
i686-linux-gnu-gcc --version
i686-linux-gnu-gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
They are both pretty new.
On Tue, 30 Mar 2021 at 16:58, Richard Henderson
<richard.hender...@linaro.org> wrote:
>
> On 3/29/21 5:03 AM, Alex Bennée wrote:
> > Newer compilers complain about non-matching constraints:
> >
> > test-i386.c:1393:5: error: asm operand 2 probably doesn’t match
> > constraints [-Werror]
> > 1393 | asm volatile ("lcall %1, %2"
> > | ^~~
>
> The problem is that the newer compiler is defaulting to -fpie, so
> &code16_func1
> is not a constant.
>
> Need to add -fno-pie to compile this. Which of course adds the confusion of
> old compilers that don't support that. We have CFLAGS_NOPIE in configure, but
> that doesn't directly help cross-compile.
>
>
> r~
--
Alex Bennée
KVM/QEMU Hacker for Linaro
