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    <div class="moz-cite-prefix">Hi Christian,<br>

      <br>

      You right, I guess that I need to add something. I was checking my

      Makefile using by openwrt to build lttng-ust and lttng-tools, the

      only process concerning flag are :  : <br>

      <br>

      lttng-tools :<br>

      <meta http-equiv="content-type" content="text/html; charset=UTF-8">

      TARGET_LDFLAGS += -lurcu-bp<br>

      DEPENDS:=+lttng-ust +libpopt<br>

      <br>

      lttng-ust<br>

      DEPENDS:=+liburcu +libuuid +librt<br>

      <br>

      Nothing else..<br>

      <br>

      Missing shared libraries file are :<br>

      - liburcu-common.so.1<br>

      - liblttng-ust-tracepoint.so.0<br>

      - libuuid.so.1<br>

      - liburcu-cds.so.1<br>

      <br>

      I was checking my build-dir directory, all shared libraries seems

      to be there :<br>

      [XXX ] find build_dir/ -name  liblttng-ust-tracepoint.so.0<br>

build_dir/target-mips_uClibc-0.9.30.1/lttng-ust-2.3.0/liblttng-ust/.libs/liblttng-ust-tracepoint.so.0<br>

build_dir/target-mips_uClibc-0.9.30.1/lttng-ust-2.3.0/ipkg-install/usr/lib/liblttng-ust-tracepoint.so.0<br>

build_dir/target-mips_uClibc-0.9.30.1/lttng-ust-2.3.0/ipkg-sagemcom/lttng-ust/usr/lib/liblttng-ust-tracepoint.so.0<br>

build_dir/target-mips_uClibc-0.9.30.1/lttng-ust-2.1.0/liblttng-ust/.libs/liblttng-ust-tracepoint.so.0<br>

build_dir/target-mips_uClibc-0.9.30.1/lttng-ust-2.1.0/ipkg-install/usr/lib/liblttng-ust-tracepoint.so.0<br>

build_dir/target-mips_uClibc-0.9.30.1/lttng-ust-2.1.0/ipkg-sagemcom/lttng-ust/usr/lib/liblttng-ust-tracepoint.so.0<br>

      [XXX ] find build_dir/ -name  libuuid.so.1<br>

build_dir/target-mips_uClibc-0.9.30.1/e2fsprogs-1.41.12/ipkg-install/usr/lib/libuuid.so.1<br>

build_dir/target-mips_uClibc-0.9.30.1/e2fsprogs-1.41.12/ipkg-sagemcom/libuuid/usr/lib/libuuid.so.1<br>

build_dir/target-mips_uClibc-0.9.30.1/e2fsprogs-1.41.12/lib/libuuid.so.1<br>

      [XXX ] find build_dir/ -name  liburcu-cds.so.1<br>

build_dir/target-mips_uClibc-0.9.30.1/userspace-rcu-0.7.6/ipkg-install/usr/lib/liburcu-cds.so.1<br>

build_dir/target-mips_uClibc-0.9.30.1/userspace-rcu-0.7.6/ipkg-sagemcom/liburcu/usr/lib/liburcu-cds.so.1<br>

build_dir/target-mips_uClibc-0.9.30.1/userspace-rcu-0.7.6/.libs/liburcu-cds.so.1<br>

      [XXX ] find build_dir/ -name  liburcu-common.so.1<br>

build_dir/target-mips_uClibc-0.9.30.1/userspace-rcu-0.7.6/ipkg-install/usr/lib/liburcu-common.so.1<br>

build_dir/target-mips_uClibc-0.9.30.1/userspace-rcu-0.7.6/ipkg-sagemcom/liburcu/usr/lib/liburcu-common.so.1<br>

build_dir/target-mips_uClibc-0.9.30.1/userspace-rcu-0.7.6/.libs/liburcu-common.so.1<br>

      <br>

      I guess that it is not an issue related to lttng build but related

      to my knowledge about autotools usage in openwrt.. <br>

      <br>

      Last thing that I forgot, I get also an issue about useconds_t in

      gen-ust-event source file. No patch found to fix this issue.

      Currently, I just replace this type by an unsigned int to continue

      my building adventure.<br>

      <br>

      Arthur.<br>

      <br>

      On 26/09/2013 18:34, Christian Babeux wrote:<br>

    </div>

    <blockquote

cite="mid:CAGDH53ni8UgfT==5KifqCo7Qa3bJdRZSJ88Z20-BiSkdmseqGg@mail.gmail.com"

      type="cite">

      <pre wrap="">Hi Arthur,

</pre>

      <blockquote type="cite">

        <pre wrap="">Problem is that I seems to have already this fix in my lttng-ust version. I

am not very confortable with autotools. Do I have to add a

"libtool-linkdep-fixup" flag somewhere to be able to enable the fix during

my compile process ?

</pre>

      </blockquote>

      <pre wrap="">

No need to add any flag, if configure detect a bogus link_all_deplibs

value in your libtool.m4 it will automatically patch it. Relevant

configure output:

[...]

checking for occurence(s) of link_all_deplibs = no in ./config/libtool.m4... 3

the detected libtool will not link all dependencies, forcing

link_all_deplibs = unknown

[...]

Your issue is that ld cannot find shared objects such as libuuid,

liburcu*. Which flag did you use to cross-compile?

Thanks,

Christian

On Thu, Sep 26, 2013 at 11:58 AM, Arthur LAMBERT

<a class="moz-txt-link-rfc2396E" href="mailto:arthur.lambert@sagemcom.com"><arthur.lambert@sagemcom.com></a> wrote:

</pre>

      <blockquote type="cite">

        <pre wrap="">Hi again,

I was able now to build lttng-ust but I have still some problems with

lttng-tools...

My current story is ( Could be usefull for the next guy which want to try to

compile the tool with a toolchain from Jurassic time) :

* shm_open issue

  -> patch for toolchain uClibc-0.9.30.1 :

<a class="moz-txt-link-freetext" href="http://lists.uclibc.org/pipermail/uclibc/2009-February/041886.html">http://lists.uclibc.org/pipermail/uclibc/2009-February/041886.html</a>

* epoll_create1 and EPOLLRDHUP issue

  -> patch for toolchain uClibc-0.9.30.1 :

<a class="moz-txt-link-freetext" href="http://uclibc.10924.n7.nabble.com/PATCH-Implement-epoll-create1-and-epoll-pwait-system-calls-td268.html">http://uclibc.10924.n7.nabble.com/PATCH-Implement-epoll-create1-and-epoll-pwait-system-calls-td268.html</a>

* be32toh issue

  -> patch for toolchain uClibc-0.9.30.1 :

<a class="moz-txt-link-freetext" href="http://lists.uclibc.org/pipermail/uclibc/2010-June/044107.html">http://lists.uclibc.org/pipermail/uclibc/2010-June/044107.html</a>

* pthread-condattr issue

   -> patch for toolchain uClibc-0.9.30.1 :

<a class="moz-txt-link-freetext" href="http://www.mail-archive.com/uclibc@uclibc.org/msg01909.html">http://www.mail-archive.com/uclibc@uclibc.org/msg01909.html</a>

My last issue :

/openwrt/staging_dir/toolchain-mips_gcc-4.4.2_uClibc-0.9.30.1/lib/gcc/mips-openwrt-linux-uclibc/4.4.2/../../../../mips-openwrt-linux-uclibc/bin/ld:

warning: liburcu-common.so.1, needed by

/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/usr/lib/liburcu-bp.so, not

found (try using -rpath or -rpath-link)

/openwrt/staging_dir/toolchain-mips_gcc-4.4.2_uClibc-0.9.30.1/lib/gcc/mips-openwrt-linux-uclibc/4.4.2/../../../../mips-openwrt-linux-uclibc/bin/ld:

warning: liblttng-ust-tracepoint.so.0, needed by

/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/usr/lib/liblttng-ust.so,

not found (try using -rpath or -rpath-link)

/openwrt/staging_dir/toolchain-mips_gcc-4.4.2_uClibc-0.9.30.1/lib/gcc/mips-openwrt-linux-uclibc/4.4.2/../../../../mips-openwrt-linux-uclibc/bin/ld:

warning: libuuid.so.1, needed by

/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/usr/lib/liblttng-ust.so,

not found (try using -rpath or -rpath-link)

/openwrt/staging_dir/toolchain-mips_gcc-4.4.2_uClibc-0.9.30.1/lib/gcc/mips-openwrt-linux-uclibc/4.4.2/../../../../mips-openwrt-linux-uclibc/bin/ld:

warning: liburcu-cds.so.1, needed by

/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/usr/lib/liblttng-ust.so,

not found (try using -rpath or -rpath-link)

XXXXXX/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/usr/lib/liblttng-ust.so:

undefined reference to `__tracepoint_probe_unregister'

XXXXXX/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/usr/lib/liblttng-ust.so:

undefined reference to `_cds_lfht_new'

XXXXXX/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/usr/lib/liblttng-ust.so:

undefined reference to `cds_lfht_lookup'

XXXXXX/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/usr/lib/liblttng-ust.so:

undefined reference to `init_tracepoint'

XXXXXX/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/usr/lib/liblttng-ust.so:

undefined reference to `cds_lfht_del'

XXXXXX/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/usr/lib/liblttng-ust.so:

undefined reference to `uuid_generate'

XXXXXX/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/usr/lib/liblttng-ust.so:

undefined reference to `exit_tracepoint'

XXXXXX/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/usr/lib/liblttng-ust.so:

undefined reference to `cds_lfht_destroy'

XXXXXX/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/usr/lib/liblttng-ust.so:

undefined reference to `cds_lfht_first'

XXXXXX/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/usr/lib/liblttng-ust.so:

undefined reference to `cds_lfht_add_unique'

XXXXXX/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/usr/lib/liblttng-ust.so:

undefined reference to `cds_lfht_next'

XXXXXX/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/usr/lib/liblttng-ust.so:

undefined reference to `__tracepoint_probe_register'

I found a bug here which seems related to my issue :

<a class="moz-txt-link-freetext" href="https://bugs.lttng.org/issues/321">https://bugs.lttng.org/issues/321</a>

This bug talk about a fix in configure.ac :

<a class="moz-txt-link-freetext" href="https://bugs.lttng.org/projects/lttng-ust/repository/revisions/faebb41808b9deda5ef5dfea0c035077407e7f9f/diff">https://bugs.lttng.org/projects/lttng-ust/repository/revisions/faebb41808b9deda5ef5dfea0c035077407e7f9f/diff</a>

Problem is that I seems to have already this fix in my lttng-ust version. I

am not very confortable with autotools. Do I have to add a

"libtool-linkdep-fixup" flag somewhere to be able to enable the fix during

my compile process ?

Thanks,

Arthur.

On 25/09/2013 18:17, Jérémie Galarneau wrote:

On Wed, Sep 25, 2013 at 7:06 AM, Arthur LAMBERT

<a class="moz-txt-link-rfc2396E" href="mailto:arthur.lambert@sagemcom.com"><arthur.lambert@sagemcom.com></a> wrote:

Hi,

I am using backfire version of Openwrt and would like to try to use

profiling features bring by tools like lttng. I found some Makefile packages

on openwrt website to build lttng-tools and lttng-ust with recent version of

openwrt version but I am not able to compile lttng without error. with

mine..

Environment :

Openwrt Backfire

UCLIBC 0.9.31

Linux kernel 2.6.28

Please note that kernel tracing is only available on kernels >= 2.6.38

(or 2.6.32 if patched appropriately).

I'm not an openwrt user, but it seems Makefiles are only provided for

LTTng 2.1.0. Can you confirm whether or not the build succeeds for

that version?

ARCH mips32

lttng version : 2.3.0

librcu version : 0.8

First problem was related to lttng-ust-2.3.0/libringbuffer/getcpu.h. I get

an undefined reference to c variable in lttng_ust_get_cpu function. After

some research I was not able to find a solution about this point even if I

seem to be up to date since I found some patch related to issue with old

version of uclibc than 0.9.32. This patch seems to be already integrated in

my lttng ust version. Anyway, I found a workaround to check that the next

step on the compilation is find... but it is not...

Could you clarify what was the error and what is the workaround?

Compilation result :

make package/lttng-tools/compile V=99

make[1]: Entering directory

`XXXXXX/openwrt'

make[2]: Entering directory

`XXXXXX/openwrt/feeds/tools/libs/liburcu'

make[2]: Leaving directory

`XXXXXX/openwrt/feeds/tools/libs/liburcu'

make[2]: Entering directory

`XXXXXX/openwrt/package/e2fsprogs'

WARNING: skipping e2fsprogs -- package not selected

WARNING: skipping uuidgen -- package not selected

WARNING: skipping libext2fs -- package not selected

WARNING: skipping tune2fs -- package not selected

WARNING: skipping resize2fs -- package not selected

WARNING: skipping badblocks -- package not selected

WARNING: skipping blkid -- package not selected

make[2]: Leaving directory

`XXXXXX/openwrt/package/e2fsprogs'

make[2]: Entering directory

`XXXXXX/openwrt/feeds/tools/devel/lttng-ust'

CFLAGS="-Os -pipe -mabi=32 -mtune=mips32 -fno-strict-aliasing -g3

-fhonour-copts -msoft-float

-IXXXXXX/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/usr/include

-IXXXXXX/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/include

-IXXXXXX/openwrt/staging_dir/toolchain-mips_gcc-4.4.2_uClibc-0.9.30.1/usr/include

-IXXXXXX/openwrt/staging_dir/toolchain-mips_gcc-4.4.2_uClibc-0.9.30.1/include

" CXXFLAGS="-Os -pipe -mabi=32 -mtune=mips32 -fno-strict-aliasing -g3

-fhonour-copts -msoft-float

-IXXXXXX/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/usr/include

-IXXXXXX/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/include

-IXXXXXX/openwrt/staging_dir/toolchain-mips_gcc-4.4.2_uClibc-0.9.30.1/usr/include

-IXXXXXX/openwrt/staging_dir/toolchain-mips_gcc-4.4.2_uClibc-0.9.30.1/include

"

LDFLAGS="-LXXXXXX/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/usr/lib

-LXXXXXX/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/lib

-LXXXXXX/openwrt/staging_dir/toolchain-mips_gcc-4.4.2_uClibc-0.9.30.1/usr/lib

-LXXXXXX/openwrt/staging_dir/toolchain-mips_gcc-4.4.2_uClibc-0.9.30.1/lib

" make  -j2 -C

XXXXXX/openwrt/build_dir/target-mips_uClibc-0.9.30.1/lttng-ust-2.3.0/.

AR=mips-openwrt-linux-uclibc-ar AS="mips-openwrt-linux-uclibc-gcc -c -Os

-pipe -mabi=32 -mtune=mips32 -fno-strict-aliasing -g3 -fhonour-copts

-msoft-float" LD=mips-openwrt-linux-uclibc-ld

NM=mips-openwrt-linux-uclibc-nm CC="mips-openwrt-linux-uclibc-gcc"

GCC="mips-openwrt-linux-uclibc-gcc" CXX="mips-openwrt-linux-uclibc-g++"

RANLIB=mips-openwrt-linux-uclibc-ranlib

STRIP=mips-openwrt-linux-uclibc-strip

OBJCOPY=mips-openwrt-linux-uclibc-objcopy

OBJDUMP=mips-openwrt-linux-uclibc-objdump

SIZE=mips-openwrt-linux-uclibc-size CROSS="mips-openwrt-linux-uclibc-"

ARCH="mips" ;

make[3]: Entering directory

`XXXXXX/openwrt/build_dir/target-mips_uClibc-0.9.30.1/lttng-ust-2.3.0'

make  all-recursive

make[4]: Entering directory

`XXXXXX/openwrt/build_dir/target-mips_uClibc-0.9.30.1/lttng-ust-2.3.0'

Making all in .

make[5]: Entering directory

`XXXXXX/openwrt/build_dir/target-mips_uClibc-0.9.30.1/lttng-ust-2.3.0'

make[5]: Nothing to be done for `all-am'.

make[5]: Leaving directory

`XXXXXX/openwrt/build_dir/target-mips_uClibc-0.9.30.1/lttng-ust-2.3.0'

Making all in include

make[5]: Entering directory

`XXXXXX/openwrt/build_dir/target-mips_uClibc-0.9.30.1/lttng-ust-2.3.0/include'