[ltt-dev] building ust for android/arm

[Mathieu Desnoyers]

* Xing Fan (xing.fan0302 at googlemail.com) wrote:
> Here are more description of my setting.
> 1. I placed the ust code in external/ folder.
> 2. my Android.mk file in external/ust-0.6 looks like this:
> ===========================================================
> include $(call all-subdir-makefiles)
> 
> LOCAL_PATH := $(call my-dir)
> 
> include $(CLEAR_VARS)
> LOCAL_MODULE := libust
> LOCAL_SRC_FILES := libust-initializer.c
> LOCAL_C_INCLUDES += \
>         $(LOCAL_PATH) \
>         $(LOCAL_PATH)/include \
>         external/userspace-rcu-0.4.6
> include $(BUILD_SHARED_LIBRARY)
> ===============================================================
> 
>  3. However, I have problems to build libust.so. The error msg is:  make:
> *** No rule to make target `build/core/libust-initializer.c', needed by
> `out/target/product/u8500/obj/SHARED_LIBRARIES/libust_intermediates/libust-initializer.o'.
> Stop.
> 
>    It is very strange that the compiler tries to pick up
> libust-initializer.c from build/core folder, even though I have specified
> that the source file is in my LOCAL_PATH, which is external/ust-0.6;

Again, please retry with updated liburcu and UST, as ust 0.6 does not
support ARM. We might be lucky and a fix might have crept in the tree
since 0.6, so let's not spend time debugging old versions.

Thanks,

Mathieu

> 
>  /Stella
> 
> On Wed, Apr 20, 2011 at 11:12 PM, Karim Yaghmour <karim.yaghmour at opersys.com
> > wrote:
> 
> > Trimming content for brevity ...
> >
> > > -----Original Message-----
> > > From: pdumas9 at sympatico.ca [mailto:pdumas9 at sympatico.ca] On Behalf Of
> > Mathieu Desnoyers
> > ...
> > > * Xing Fan (xing.fan0302 at googlemail.com) wrote:
> > ...
> > > > I still think there is something wrong in my Android.mk file. If we
> > read
> > > > Makefile.am, it indicates to build a shared library called libust
> > based on
> > > > libust-initializer (I have treated this in my Android.mk). However, it
> > seems
> > > > Makefile does more than this. it builds/uses libust-initializer.o, I
> > do not
> > > > know how to put this in Android.mk file.
> > > >
> > > > Anyone has any hint?
> > >
> > > Sorry, I'm not familiar with the Android build infrastructure. Maybe
> > > Karim might have some info here ? (see problem description below)
> >
> > I don't have enough information. Has libust been placed in aosp/external/.
> > That's where it would usually go. Usually the best thing is to check how
> > other packages in external/ are made to build part of the AOSP and do the
> > same.
> >
> > As for the libust-initializer.c getting picked up, it looks like it's the
> > EXTRA_DIST flag from Makefile.am creeping in. Again, I would need more
> > info.
> >
> > --
> > Karim Yaghmour
> > CEO - Opersys inc. / www.opersys.com
> > http://twitter.com/karimyaghmour
> >

-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com