Re: [PATCH 2/2] local.conf.sample: qemu-native DEPENDS libxext-naive

[Robert Yang <liezhi.yang@windriver.com>]

On 07/22/2014 06:48 PM, Martin Jansa wrote:
> On Tue, Jul 22, 2014 at 03:31:25AM -0700, Robert Yang wrote:
>> Fixed do_configure error:
>>
>> ERROR: User requested feature sdl
>>         configure was not able to find it.
>>         Install SDL devel
>>
>> This is error from log.do_configure, and if we check config.log, the error is:
>>
>> sysroots/x86_64-linux/usr/lib/libXext.so.6: undefined reference to `_XEatDataWords'
>>
>> The _XEatDataWords is provided by libX11.so, the dependencies are:
>>
>> qemu-native -> sdl(from the host) -> libXext.so(maybe host or native) -> libX11.so (maybe host or native)
>>
>> We may meet the error if host's libX11.so doesn't provide _XEatDataWords, and native's
>> libX11.so has been removed (for example, rebuild).
>>
>> Another way to fix is: let qemu-native depend on libxext-naive when sdl is
>> enabled, for example:
>>
>> PACKAGECONFIG[sdl] = "--enable-sdl,--disable-sdl,libsdl libxext-native,"
>>
>> But this might be incorrect since target sdl or qemu may not require X11, so
>> set:
>>
>> DEPENDS_pn-qemu-native += "libxext-naive"
>>
>> in local.conf.sample to fix problem.
>>
>> Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
>> ---
>>   meta-yocto/conf/local.conf.sample |    1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/meta-yocto/conf/local.conf.sample b/meta-yocto/conf/local.conf.sample
>> index bcb0864..742eb1a 100644
>> --- a/meta-yocto/conf/local.conf.sample
>> +++ b/meta-yocto/conf/local.conf.sample
>> @@ -243,6 +243,7 @@ BB_DISKMON_DIRS = "\
>>   # seen. The two lines below enable the SDL backend too. This assumes there is a
>>   # libsdl library available on your build system.
>>   PACKAGECONFIG_pn-qemu-native = "sdl"
>> +DEPENDS_pn-qemu-native += "libxext-naive"
>
> Doesn't this belong in qemu-native's PACKAGECONFIG definition for sdl?

Yes, but I don't know how to do it, what I know is:

PACKAGECONFIG[sdl] = "--enable-sdl,--disable-sdl,libsdl libxext,"

That would affect the target qemu, too, for example, when the user defines:

PACKAGECONFIG = "sdl" for target qemu, then the depends would be:

"libsdl libxext"

But the target sdl or qemu may not require X11.

Do you know how to define it for qemu-native only, please ?

// Robert

>
>>   PACKAGECONFIG_pn-nativesdk-qemu = "sdl"
>>   ASSUME_PROVIDED += "libsdl-native"
>>
>> --
>> 1.7.9.5
>>
>> --
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>