Compiling without system, user, tools or guest-agent fails with the
following error message:

./configure --disable-system --disable-user --disable-tools \
--disable-guest-agent

error message:

/usr/bin/ld: libqemuutil.a.p/util_error-report.c.o: in function `error_printf':
/media/liuzhao/data/qemu-cook/build/../util/error-report.c:38: undefined reference to `error_vprintf'
/usr/bin/ld: libqemuutil.a.p/util_error-report.c.o: in function `vreport':
/media/liuzhao/data/qemu-cook/build/../util/error-report.c:215: undefined reference to `error_vprintf'
collect2: error: ld returned 1 exit status

This is because tests/bench and tests/unit both need qemuutil, which
requires error_vprintf stub when system is disabled.

Add error_vprintf stub into stub_ss for all cases other than disabling
system.

Fixes: 3a15604900c4 ("stubs: include stubs only if needed")
Reported-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
---
 stubs/meson.build | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/stubs/meson.build b/stubs/meson.build
index 3b9d42023cb2..a99522ab6bbf 100644
--- a/stubs/meson.build
+++ b/stubs/meson.build
@@ -45,17 +45,10 @@ if have_block or have_ga
   stub_ss.add(files('qmp-quit.c'))
 endif
 
-if have_ga
-  stub_ss.add(files('error-printf.c'))
-endif
-
 if have_block or have_user
   stub_ss.add(files('qtest.c'))
   stub_ss.add(files('vm-stop.c'))
   stub_ss.add(files('vmstate.c'))
-
-  # more symbols provided by the monitor
-  stub_ss.add(files('error-printf.c'))
 endif
 
 if have_user
@@ -76,6 +69,9 @@ if have_system
   stub_ss.add(files('target-monitor-defs.c'))
   stub_ss.add(files('win32-kbd-hook.c'))
   stub_ss.add(files('xen-hw-stub.c'))
+else
+  # more symbols provided by the monitor
+  stub_ss.add(files('error-printf.c'))
 endif
 
 if have_system or have_user
-- 
2.34.1

On 6/5/24 17:25, Zhao Liu wrote:
> Compiling without system, user, tools or guest-agent fails with the
> following error message:
> 
> ./configure --disable-system --disable-user --disable-tools \
> --disable-guest-agent
> 
> error message:
> 
> /usr/bin/ld: libqemuutil.a.p/util_error-report.c.o: in function `error_printf':
> /media/liuzhao/data/qemu-cook/build/../util/error-report.c:38: undefined reference to `error_vprintf'
> /usr/bin/ld: libqemuutil.a.p/util_error-report.c.o: in function `vreport':
> /media/liuzhao/data/qemu-cook/build/../util/error-report.c:215: undefined reference to `error_vprintf'
> collect2: error: ld returned 1 exit status
> 
> This is because tests/bench and tests/unit both need qemuutil, which
> requires error_vprintf stub when system is disabled.
> 
> Add error_vprintf stub into stub_ss for all cases other than disabling
> system.

Should be "other than enabled system emulation", but...

> -if have_ga
> -  stub_ss.add(files('error-printf.c'))
> -endif
> -
>   if have_block or have_user
>     stub_ss.add(files('qtest.c'))
>     stub_ss.add(files('vm-stop.c'))
>     stub_ss.add(files('vmstate.c'))
> -
> -  # more symbols provided by the monitor
> -  stub_ss.add(files('error-printf.c'))
>   endif

... these should be left in, since it's possible to build with 
--enable-guest-agent --enable-system.

The best and easiest solution is simply to move error-printf.c to the 
unconditional section at the top of the file.  I queued the patch with 
that change.

Paolo

>   if have_user
> @@ -76,6 +69,9 @@ if have_system
>     stub_ss.add(files('target-monitor-defs.c'))
>     stub_ss.add(files('win32-kbd-hook.c'))
>     stub_ss.add(files('xen-hw-stub.c'))
> +else
> +  # more symbols provided by the monitor
> +  stub_ss.add(files('error-printf.c'))
>   endif
>   
>   if have_system or have_user

On Thu, Jun 06, 2024 at 09:41:47AM +0200, Paolo Bonzini wrote:
> Date: Thu, 6 Jun 2024 09:41:47 +0200
> From: Paolo Bonzini <pbonzini@redhat.com>
> Subject: Re: [PATCH] stubs/meson: Fix qemuutil build when --disable-system
> 
> On 6/5/24 17:25, Zhao Liu wrote:
> > Compiling without system, user, tools or guest-agent fails with the
> > following error message:
> > 
> > ./configure --disable-system --disable-user --disable-tools \
> > --disable-guest-agent
> > 
> > error message:
> > 
> > /usr/bin/ld: libqemuutil.a.p/util_error-report.c.o: in function `error_printf':
> > /media/liuzhao/data/qemu-cook/build/../util/error-report.c:38: undefined reference to `error_vprintf'
> > /usr/bin/ld: libqemuutil.a.p/util_error-report.c.o: in function `vreport':
> > /media/liuzhao/data/qemu-cook/build/../util/error-report.c:215: undefined reference to `error_vprintf'
> > collect2: error: ld returned 1 exit status
> > 
> > This is because tests/bench and tests/unit both need qemuutil, which
> > requires error_vprintf stub when system is disabled.
> > 
> > Add error_vprintf stub into stub_ss for all cases other than disabling
> > system.
> 
> Should be "other than enabled system emulation", but...
> 
> > -if have_ga
> > -  stub_ss.add(files('error-printf.c'))
> > -endif
> > -
> >   if have_block or have_user
> >     stub_ss.add(files('qtest.c'))
> >     stub_ss.add(files('vm-stop.c'))
> >     stub_ss.add(files('vmstate.c'))
> > -
> > -  # more symbols provided by the monitor
> > -  stub_ss.add(files('error-printf.c'))
> >   endif
> 
> ... these should be left in, since it's possible to build with
> --enable-guest-agent --enable-system.
> 
> The best and easiest solution is simply to move error-printf.c to the
> unconditional section at the top of the file.  I queued the patch with that
> change.

Thanks!! I can delete my v2 branch now. :-)

On Wed, Jun 05, 2024 at 11:25:49PM +0800, Zhao Liu wrote:
> Date: Wed, 5 Jun 2024 23:25:49 +0800
> From: Zhao Liu <zhao1.liu@intel.com>
> Subject: [PATCH] stubs/meson: Fix qemuutil build when --disable-system
> X-Mailer: git-send-email 2.34.1
> 
> Compiling without system, user, tools or guest-agent fails with the
> following error message:
> 
> ./configure --disable-system --disable-user --disable-tools \
> --disable-guest-agent
> 
> error message:
> 
> /usr/bin/ld: libqemuutil.a.p/util_error-report.c.o: in function `error_printf':
> /media/liuzhao/data/qemu-cook/build/../util/error-report.c:38: undefined reference to `error_vprintf'
> /usr/bin/ld: libqemuutil.a.p/util_error-report.c.o: in function `vreport':
> /media/liuzhao/data/qemu-cook/build/../util/error-report.c:215: undefined reference to `error_vprintf'
> collect2: error: ld returned 1 exit status
> 
> This is because tests/bench and tests/unit both need qemuutil, which
> requires error_vprintf stub when system is disabled.
> 
> Add error_vprintf stub into stub_ss for all cases other than disabling
> system.
> 
> Fixes: 3a15604900c4 ("stubs: include stubs only if needed")
> Reported-by: Daniel P. Berrangé <berrange@redhat.com>
> Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
> ---
>  stubs/meson.build | 10 +++-------
>  1 file changed, 3 insertions(+), 7 deletions(-)
> 
> diff --git a/stubs/meson.build b/stubs/meson.build
> index 3b9d42023cb2..a99522ab6bbf 100644
> --- a/stubs/meson.build
> +++ b/stubs/meson.build
> @@ -45,17 +45,10 @@ if have_block or have_ga
>    stub_ss.add(files('qmp-quit.c'))
>  endif
>  
> -if have_ga
> -  stub_ss.add(files('error-printf.c'))
> -endif
> -
>  if have_block or have_user
>    stub_ss.add(files('qtest.c'))
>    stub_ss.add(files('vm-stop.c'))
>    stub_ss.add(files('vmstate.c'))
> -
> -  # more symbols provided by the monitor
> -  stub_ss.add(files('error-printf.c'))
>  endif
>  
>  if have_user
> @@ -76,6 +69,9 @@ if have_system
>    stub_ss.add(files('target-monitor-defs.c'))
>    stub_ss.add(files('win32-kbd-hook.c'))
>    stub_ss.add(files('xen-hw-stub.c'))
> +else
> +  # more symbols provided by the monitor
> +  stub_ss.add(files('error-printf.c'))
>  endif

Oops, it's not a correct fix. error-printf.c should still be added
unconditionally.

>  
>  if have_system or have_user
> -- 
> 2.34.1
>