[ltt-dev] building ust for android/arm

[Xing Fan]

Thanks Mathieu for your quick answer.

I choose ust-0.6 to match my kernel version, according to the guide on lttng
website.

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?

Thanks!

On Wed, Apr 20, 2011 at 8:12 PM, Mathieu Desnoyers <
compudj at krystal.dyndns.org> wrote:

> * Xing Fan (xing.fan0302 at googlemail.com) wrote:
> > I am building lttng ust-0.6 for android/Arm platform.
> >
> > 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;
> >
> > Anyone has clue how to write a Android.mk for this?
>
> ARM support only came with UST 0.12 (see Changelog file in UST tree). I
> recommend you try the new version and see if the problem is still there.
>
> Thanks,
>
> Mathieu
>
> >
> > /Stella
> >
> >
> >
> > My Android.mk file 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)
> > ===============================================================
> >
> >
> > The Makefile.am looks like this
> > =========================================================================
> >
> > ACLOCAL_AMFLAGS = -I config
> >
> > # The order here is tricky. SUBDIRS applies both to compilation and
> > # installation. Programs depending on the libs must be built after
> > # libust and '.' (that contains the linker script). However, '.'
> > # must be installed after libust so it can overwrite libust.so with
> > # the linker script.
> > SUBDIRS = snprintf libustcomm libust . tests libustinstr-malloc libustd
> ustd
> > ustctl libustfork include doc
> >
> > EXTRA_DIST = libust.ldscript.in libust-initializer.c
> > dist_bin_SCRIPTS = usttrace
> >
> > ldscriptsdir = $(libdir)
> > ldscripts_DATA = libust.so libust-initializer.o
> >
> > CLEANFILES = $(ldscripts_DATA) ./tests/libust-initializer.Po
> >
> > libust.so: libust.ldscript.in
> >     $(SED) -e "s@\@FORMAT\@@$(LIBFORMAT)@" < $< > $@
> >
> > # It is very important to compile the initializer with PIC otherwise we
> > # may get obscure errors when linking to shared libraries.
> > libust-initializer.o: libust-initializer.c
> >     $(CC) $(CFLAGS) -fno-strict-aliasing -fPIC -c -I$(top_srcdir)/include
> -o
> > $@ $<
> > ===========================================================
>
> > _______________________________________________
> > ltt-dev mailing list
> > ltt-dev at lists.casi.polymtl.ca
> > http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
>
>
> --
> Mathieu Desnoyers
> Operating System Efficiency R&D Consultant
> EfficiOS Inc.
> http://www.efficios.com
>
> _______________________________________________
> ltt-dev mailing list
> ltt-dev at lists.casi.polymtl.ca
> http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
>
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