On 02/01/2012 09:21 PM, Gilles Chanteperdrix wrote:
> On 02/01/2012 04:50 PM, Jan Kiszka wrote:
>> On 2012-02-01 16:38, Gilles Chanteperdrix wrote:
>>> On 02/01/2012 04:25 PM, Jan Kiszka wrote:
>>>> On 2012-02-01 16:17, Gilles Chanteperdrix wrote:
>>>>> On 02/01/2012 03:37 PM, Jan Kiszka wrote:
>>>>>> Hi,
>>>>>>
>>>>>> don't remember anymore: Is there any subtle reason that prevent a
>>>>>> change like
>>>>>>
>>>>>> diff --git a/src/skins/native/Makefile.am b/src/skins/native/Makefile.am
>>>>>> index 39eaaed..4cc8859 100644
>>>>>> --- a/src/skins/native/Makefile.am
>>>>>> +++ b/src/skins/native/Makefile.am
>>>>>> @@ -22,6 +22,9 @@ libnative_la_SOURCES = \
>>>>>>          wrappers.c \
>>>>>>          wrappers.h
>>>>>>  
>>>>>> +libnative_la_LIBADD = \
>>>>>> +        ../common/libxenomai.la
>>>>>> +
>>>>>>  libnative_la_CPPFLAGS = \
>>>>>>          @XENO_USER_CFLAGS@ \
>>>>>>          -I$(top_srcdir)/include
>>>>>> diff --git a/src/skins/rtdm/Makefile.am b/src/skins/rtdm/Makefile.am
>>>>>> index 8ad74be..2dc0a90 100644
>>>>>> --- a/src/skins/rtdm/Makefile.am
>>>>>> +++ b/src/skins/rtdm/Makefile.am
>>>>>> @@ -8,6 +8,9 @@ librtdm_la_SOURCES = \
>>>>>>          core.c \
>>>>>>          init.c
>>>>>>  
>>>>>> +librtdm_la_LIBADD = \
>>>>>> +        ../common/libxenomai.la
>>>>>> +
>>>>>>  librtdm_la_CPPFLAGS = \
>>>>>>          @XENO_USER_CFLAGS@ \
>>>>>>          -I$(top_srcdir)/include
>>>>>> diff --git a/src/testsuite/latency/Makefile.am 
>>>>>> b/src/testsuite/latency/Makefile.am
>>>>>> index c772c26..6534df5 100644
>>>>>> --- a/src/testsuite/latency/Makefile.am
>>>>>> +++ b/src/testsuite/latency/Makefile.am
>>>>>> @@ -14,5 +14,4 @@ latency_LDFLAGS = @XENO_USER_LDFLAGS@
>>>>>>  latency_LDADD = \
>>>>>>          ../../skins/native/libnative.la \
>>>>>>          ../../skins/rtdm/librtdm.la \
>>>>>> -        ../../skins/common/libxenomai.la \
>>>>>>          -lpthread -lm
>>>>>>
>>>>>> i.e. that we let the skin libraries depend on libxenomai and then remove
>>>>>> the explicit dependency from our binaries and the xeno-config output?
>>>>>> Is there some ordering issue again (we have -l<skin> before -lxenomai
>>>>>> in the ldflags).
>>>>>>
>>>>>> If possible, this would allow for things like dlopen("libnative.so").
>>>>>
>>>>> It allows xeno-config result to work both with dynamic and static
>>>>> libraries. Static libraries have no dependency system, so, when linking
>>>>> a program whith libnative.a for instance, without libtool, you still
>>>>> have to link it with libxenomai.a.
>>>>
>>>> OK, part two could stay, but the dependencies should still be added to
>>>> the skin libs - if possible.
>>>>
>>>>>
>>>>> How come you can not dlopen libnative.so, dlopening libxenomai.so before
>>>>> does not work?
>>>>
>>>> Dependencies of libnative on libxenomai are not resolved when you open
>>>> the former even if the latter is already loaded. Maybe you can do this
>>>> by pulling in all required symbols one by one manually, haven't tried
>>>> yet. But that would at least be unhandy.
>>>
>>> What about RTLD_GLOBAL ?
>>>
>>
>> Was possibly the reason, need to check back.
>>
>> Still, what prevents stating the existing dependency of lib<skin> on
>> libxenomai? The dance above would than be obsolete.
> 
> The change is merged. I took the chance to check that static build still
> built.
> 

Unfortunately this change also causes a build failure when
cross-compiling for ARM, so, change reverted, too.

-- 
                                                                Gilles.

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