[01/22] Add hard build dependency on glib

GLib is an extremely common library that has a portable thread implementation
along with tons of other goodies.

GLib and GObject have a fantastic amount of infrastructure we can leverage in
QEMU including an object oriented programming infrastructure.

Short term, it has a very nice thread pool implementation that we could leverage
in something like virtio-9p.  It also has a test harness implementation that
this series will use.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

On Sun, Mar 06, 2011 at 07:22:43PM -0600, Anthony Liguori wrote:
> GLib is an extremely common library that has a portable thread implementation
> along with tons of other goodies.
> 
> GLib and GObject have a fantastic amount of infrastructure we can leverage in
> QEMU including an object oriented programming infrastructure.
> 
> Short term, it has a very nice thread pool implementation that we could leverage
> in something like virtio-9p.  It also has a test harness implementation that
> this series will use.
> 
> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
> 
> diff --git a/Makefile b/Makefile
> index eca4c76..6b1d716 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -104,6 +104,8 @@ audio/audio.o audio/fmodaudio.o: QEMU_CFLAGS += $(FMOD_CFLAGS)
>  
>  QEMU_CFLAGS+=$(CURL_CFLAGS)
>  
> +QEMU_CFLAGS+=$(GLIB_CFLAGS)
> +
>  ui/cocoa.o: ui/cocoa.m
>  
>  ui/sdl.o audio/sdlaudio.o ui/sdl_zoom.o baum.o: QEMU_CFLAGS += $(SDL_CFLAGS)
> diff --git a/Makefile.objs b/Makefile.objs
> index 9e98a66..0ba02c7 100644
> --- a/Makefile.objs
> +++ b/Makefile.objs
> @@ -322,3 +322,5 @@ vl.o: QEMU_CFLAGS+=$(GPROF_CFLAGS)
>  
>  vl.o: QEMU_CFLAGS+=$(SDL_CFLAGS)
>  
> +vl.o: QEMU_CFLAGS+=$(GLIB_CFLAGS)
> +
> diff --git a/Makefile.target b/Makefile.target
> index 220589e..0bd42da 100644
> --- a/Makefile.target
> +++ b/Makefile.target
> @@ -204,6 +204,7 @@ QEMU_CFLAGS += $(VNC_TLS_CFLAGS)
>  QEMU_CFLAGS += $(VNC_SASL_CFLAGS)
>  QEMU_CFLAGS += $(VNC_JPEG_CFLAGS)
>  QEMU_CFLAGS += $(VNC_PNG_CFLAGS)
> +QEMU_CFLAGS += $(GLIB_CFLAGS)
>  
>  # xen backend driver support
>  obj-$(CONFIG_XEN) += xen_machine_pv.o xen_domainbuild.o
> diff --git a/configure b/configure
> index ef51a58..e1305ae 100755
> --- a/configure
> +++ b/configure
> @@ -1662,6 +1662,18 @@ EOF
>  fi
>  
>  ##########################################
> +# glib support probe
> +if $pkg_config --modversion gthread-2.0 > /dev/null 2>&1 ; then
> +    glib_cflags=`$pkg_config --cflags gthread-2.0 2>/dev/null`
> +    glib_libs=`$pkg_config --libs gthread-2.0 2>/dev/null`
> +    libs_softmmu="$glib_libs $libs_softmmu"
> +    libs_tools="$glib_libs $libs_softmmu"
> +else
> +    echo "glib-2.0 required to compile QEMU"
> +    exit 1
> +fi

It would be preferable to specify an explicit '--atleast-version=2.xxx'
since I doubt QEMU will work with all 2.x versions of glib. Obviously
the min version will limit what platforms QEMU can easily be deployed
on, so we need to be as flexible as possible.

Regards,
Daniel

On 03/07/2011 04:59 AM, Daniel P. Berrange wrote:
> On Sun, Mar 06, 2011 at 07:22:43PM -0600, Anthony Liguori wrote:
>    
>> GLib is an extremely common library that has a portable thread implementation
>> along with tons of other goodies.
>>
>> GLib and GObject have a fantastic amount of infrastructure we can leverage in
>> QEMU including an object oriented programming infrastructure.
>>
>> Short term, it has a very nice thread pool implementation that we could leverage
>> in something like virtio-9p.  It also has a test harness implementation that
>> this series will use.
>>
>> Signed-off-by: Anthony Liguori<aliguori@us.ibm.com>
>>
>> diff --git a/Makefile b/Makefile
>> index eca4c76..6b1d716 100644
>> --- a/Makefile
>> +++ b/Makefile
>> @@ -104,6 +104,8 @@ audio/audio.o audio/fmodaudio.o: QEMU_CFLAGS += $(FMOD_CFLAGS)
>>
>>   QEMU_CFLAGS+=$(CURL_CFLAGS)
>>
>> +QEMU_CFLAGS+=$(GLIB_CFLAGS)
>> +
>>   ui/cocoa.o: ui/cocoa.m
>>
>>   ui/sdl.o audio/sdlaudio.o ui/sdl_zoom.o baum.o: QEMU_CFLAGS += $(SDL_CFLAGS)
>> diff --git a/Makefile.objs b/Makefile.objs
>> index 9e98a66..0ba02c7 100644
>> --- a/Makefile.objs
>> +++ b/Makefile.objs
>> @@ -322,3 +322,5 @@ vl.o: QEMU_CFLAGS+=$(GPROF_CFLAGS)
>>
>>   vl.o: QEMU_CFLAGS+=$(SDL_CFLAGS)
>>
>> +vl.o: QEMU_CFLAGS+=$(GLIB_CFLAGS)
>> +
>> diff --git a/Makefile.target b/Makefile.target
>> index 220589e..0bd42da 100644
>> --- a/Makefile.target
>> +++ b/Makefile.target
>> @@ -204,6 +204,7 @@ QEMU_CFLAGS += $(VNC_TLS_CFLAGS)
>>   QEMU_CFLAGS += $(VNC_SASL_CFLAGS)
>>   QEMU_CFLAGS += $(VNC_JPEG_CFLAGS)
>>   QEMU_CFLAGS += $(VNC_PNG_CFLAGS)
>> +QEMU_CFLAGS += $(GLIB_CFLAGS)
>>
>>   # xen backend driver support
>>   obj-$(CONFIG_XEN) += xen_machine_pv.o xen_domainbuild.o
>> diff --git a/configure b/configure
>> index ef51a58..e1305ae 100755
>> --- a/configure
>> +++ b/configure
>> @@ -1662,6 +1662,18 @@ EOF
>>   fi
>>
>>   ##########################################
>> +# glib support probe
>> +if $pkg_config --modversion gthread-2.0>  /dev/null 2>&1 ; then
>> +    glib_cflags=`$pkg_config --cflags gthread-2.0 2>/dev/null`
>> +    glib_libs=`$pkg_config --libs gthread-2.0 2>/dev/null`
>> +    libs_softmmu="$glib_libs $libs_softmmu"
>> +    libs_tools="$glib_libs $libs_softmmu"
>> +else
>> +    echo "glib-2.0 required to compile QEMU"
>> +    exit 1
>> +fi
>>      
> It would be preferable to specify an explicit '--atleast-version=2.xxx'
> since I doubt QEMU will work with all 2.x versions of glib. Obviously
> the min version will limit what platforms QEMU can easily be deployed
> on, so we need to be as flexible as possible.
>    

Yeah, right now, we don't really depend on a specific version but it 
would be good to have for when we do.

The testing bits are not part of the main build (they depend on a pretty 
recent glib).

Regards,

Anthony Liguori

> Regards,
> Daniel
>