From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <4F295F39.7080003@domain.hid> Date: Wed, 01 Feb 2012 16:50:17 +0100 From: Jan Kiszka MIME-Version: 1.0 References: <4F294E43.7060102@domain.hid> <4F2957A0.6040806@domain.hid> <4F29597F.8050500@domain.hid> <4F295C71.6090503@domain.hid> In-Reply-To: <4F295C71.6090503@domain.hid> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Subject: Re: [Xenomai-core] Built-in libxenomai dependency List-Id: Xenomai life and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Gilles Chanteperdrix Cc: xenomai-core 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 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 on libxenomai? The dance above would than be obsolete. Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux