From: Thomas Huth <th...@redhat.com> QEMU currently does not work on OpenBSD since the -fzero-call-used-regs option that we added to meson.build recently does not work with the "retguard" extension from OpenBSD's Clang. Thus let's disable the -fzero-call-used-regs here until there's a better solution available.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2278 Signed-off-by: Thomas Huth <th...@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <phi...@linaro.org> Message-ID: <20240411120819.56417-1-th...@redhat.com> Signed-off-by: Paolo Bonzini <pbonz...@redhat.com> --- meson.build | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/meson.build b/meson.build index c9c3217ba4b..91a0aa64c64 100644 --- a/meson.build +++ b/meson.build @@ -562,7 +562,11 @@ hardening_flags = [ # # NB: Clang 17 is broken and SEGVs # https://github.com/llvm/llvm-project/issues/75168 -if cc.compiles('extern struct { void (*cb)(void); } s; void f(void) { s.cb(); }', +# +# NB2: This clashes with the "retguard" extension of OpenBSD's Clang +# https://gitlab.com/qemu-project/qemu/-/issues/2278 +if host_os != 'openbsd' and \ + cc.compiles('extern struct { void (*cb)(void); } s; void f(void) { s.cb(); }', name: '-fzero-call-used-regs=used-gpr', args: ['-O2', '-fzero-call-used-regs=used-gpr']) hardening_flags += '-fzero-call-used-regs=used-gpr' -- 2.44.0
