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([98.142.47.158]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-724de47eb05sm249710b3a.75.2024.11.21.13.54.34 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 Nov 2024 13:54:35 -0800 (PST) From: Steve Sakoman To: openembedded-core@lists.openembedded.org Subject: [OE-core][scarthgap 09/27] lttng-ust: backport patch to fix cmake-multiple-shared-libraries build error Date: Thu, 21 Nov 2024 13:53:59 -0800 Message-Id: <7de4292f119a4f43dc739b15f0a2d966c05d9b71.1732225943.git.steve@sakoman.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Thu, 21 Nov 2024 21:54:41 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/207564 From: Bin Lan There are the following error when building doc/examples/cmake-multiple-shared-libraries: ld: warning: liblttng-ust-common.so.1, needed by lttng-ust/2.13.8/build/src/lib/lttng-ust/.libs/liblttng-ust.so, not found (try using -rpath or -rpath-link) ld: warning: liblttng-ust-tracepoint.so.1, needed by lttng-ust/2.13.8/build/src/lib/lttng-ust/.libs/liblttng-ust.so, not found (try using -rpath or -rpath-link) ld: warning: liblttng-ust-common.so.1, needed by lttng-ust/2.13.8/build/src/lib/lttng-ust/.libs/liblttng-ust.so, not found (try using -rpath or -rpath-link) ld: warning: liblttng-ust-tracepoint.so.1, needed by lttng-ust/2.13.8/build/src/lib/lttng-ust/.libs/liblttng-ust.so, not found (try using -rpath or -rpath-link) ld: lttng-ust/2.13.8/build/src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_common_alloc_tls' ld: lttng-ust/2.13.8/build/src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_urcu_after_fork_parent' ld: lttng-ust/2.13.8/build/src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_urcu_after_fork_child' ld: lttng-ust/2.13.8/build/src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_urcu_after_fork_parent' ld: lttng-ust/2.13.8/build/src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_tp_probe_unregister_queue_release' ld: lttng-ust/2.13.8/build/src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_cancelstate_disable_pop' collect2: error: ld returned 1 exit status This change set removes the old patch file 0001-Makefile.am-update-rpath-link.patch, adds a new patch file 0001-Fix-Build-examples-when-rpath-is-stripped-from-in-bu.patch. Signed-off-by: Bin Lan Signed-off-by: Richard Purdie (cherry picked from commit 89394da1cbe98652e1d0bd59c762ff7da2d6a113) Signed-off-by: Steve Sakoman --- ...es-when-rpath-is-stripped-from-in-bu.patch | 161 ++++++++++++++++++ .../0001-Makefile.am-update-rpath-link.patch | 33 ---- meta/recipes-kernel/lttng/lttng-ust_2.13.8.bb | 2 +- 3 files changed, 162 insertions(+), 34 deletions(-) create mode 100644 meta/recipes-kernel/lttng/lttng-ust/0001-Fix-Build-examples-when-rpath-is-stripped-from-in-bu.patch delete mode 100644 meta/recipes-kernel/lttng/lttng-ust/0001-Makefile.am-update-rpath-link.patch diff --git a/meta/recipes-kernel/lttng/lttng-ust/0001-Fix-Build-examples-when-rpath-is-stripped-from-in-bu.patch b/meta/recipes-kernel/lttng/lttng-ust/0001-Fix-Build-examples-when-rpath-is-stripped-from-in-bu.patch new file mode 100644 index 0000000000..6da675fa31 --- /dev/null +++ b/meta/recipes-kernel/lttng/lttng-ust/0001-Fix-Build-examples-when-rpath-is-stripped-from-in-bu.patch @@ -0,0 +1,161 @@ +From 5d10459b6b5182fcbc98240d9dace026c87a5037 Mon Sep 17 00:00:00 2001 +From: Kienan Stewart +Date: Mon, 5 Aug 2024 15:41:34 -0400 +Subject: [PATCH] Fix: Build examples when rpath is stripped from in-build-tree + libs + +Observed issue +============== + +Certain tool chains[1, 2] emit warnings or errors when building the +example applications. + +``` +make[3]: Entering directory +'/home/xxx/src/efficios/lttng/master/src/lttng-ust/doc/examples/easy-ust' +CC sample.o +CC tp.o +CCLD sample + +/usr/bin/ld: warning: liblttng-ust-common.so.1, needed by ../../../src/lib/lttng-ust/.libs/liblttng-ust.so, not found (try using -rpath or -rpath-link) +/usr/bin/ld: warning: liblttng-ust-tracepoint.so.1, needed by ../../../src/lib/lttng-ust/.libs/liblttng-ust.so, not found (try using -rpath or -rpath-link) +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_add_fd_to_tracker' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_urcu_after_fork_child' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_common_ctor' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_tp_init' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_tp_probe_register_queue_release' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_cancelstate_disable_pop' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_urcu_synchronize_rcu' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_urcu_register_thread' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_tp_probe_prune_release_queue' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_cancelstate_disable_push' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_urcu_before_fork' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_lock_fd_tracker' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_trace_clock' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_urcu_has_sys_membarrier' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_unlock_fd_tracker' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_tp_exit' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_get_cpu_sym' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_common_alloc_tls' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_urcu_after_fork_parent' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_delete_fd_from_tracker' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_urcu_register' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_urcu_reader' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_urcu_gp' +/usr/bin/ld: ../../../src/lib/lttng-ust/.libs/liblttng-ust.so: undefined reference to `lttng_ust_tp_probe_unregister_queue_release' +collect2: error: ld returned 1 exit status +``` + +=== Reproducer === + +The easiest way to consistently reproduce this type of build failure +is to perform the following steps: + +``` +./configure +make -j$(nproc) +find . -iname '*.so' -exec chrpath -d {} \; +make -C doc/examples clean +make -j$(nproc) +``` + +As the examples are not built with libtool, finding the libraries to +link against depends on the shared objects having an rpath. + +E.g. + +``` +$ chrpath src/lib/lttng-ust/.libs/liblttng-ust.so.1.0.0 +src/lib/lttng-ust/.libs/liblttng-ust.so.1.0.0: RUNPATH=/home/xxx/src/efficios/lttng/master/src/lttng-ust/src/lib/lttng-ust-common/.libs:/home/xxx/src/efficios/lttng/master/src/lttng-ust/src/lib/lttng-ust-tracepoint/.libs:/home/xxx/src/efficios/lttng/master/usr/lib +``` + +The current examples build with `-Wl,-rpath` for `liblttng-ust`, but +not the dependencies of `liblttng-ust` (which would normally be found +via it's own rpath). If the `rpath` is stripped from +`liblttng-ust.so`, or if the tool chain ignores `rpath` explicitly, +then the build with fail. + +In the case of a yocto build environment as in GitHub#61[1], the +following commands reproduced the warnings and the errors seen in the +above test case. + +``` +git clone git://git.yoctoproject.org/poky && cd poky/ +. oe-init-build-env +echo "PACKAGECONFIG:pn-lttng-ust = 'examples'" >>conf/local.conf +bitbake lttng-ust +``` + +=== Solution === + +Explicitly add library search paths and set linker rpath-link are set +for both the standard and cmake examples. Similar changes were +proposed for each of those parts respectively in GitHub#61[1] and GitHub#63[2]. + +=== Known issues === + +While the `rpath-link` for the second order library dependencies will +allow the builds to complete, the examples will not work at +runtime even when using `rpath`. From `man ld.so`, the rpaths in an +executable or shared object are only considered for direct +dependencies. Therefore, without setting `LD_LIBRARY_PATH` or +installing the libraries test applications will fail as follows: + +``` +$ ./doc/examples/easy-ust/sample +./doc/examples/easy-ust/sample: error while loading shared libraries: liblttng-ust-common.so.1: cannot open shared object file: No such file or directory +``` + +References +========== + +[1]: https://github.com/lttng/lttng-ust/pull/61 +[2]: https://github.com/lttng/lttng-ust/pull/63 + +Change-Id: I273ccddd0d0b7a1b57b9e09ddf48d8b5b41e6f8e +Signed-off-by: Kienan Stewart +Signed-off-by: Mathieu Desnoyers + +Upstream-Status: Backport [https://github.com/lttng/lttng-ust/commit/5d10459b6b5182fcbc98240d9dace026c87a5037] +Signed-off-by: Bin Lan + +--- + doc/examples/Makefile.am | 13 ++++++++++--- + 1 file changed, 10 insertions(+), 3 deletions(-) + +diff --git a/doc/examples/Makefile.am b/doc/examples/Makefile.am +index aebf63bd..79766ec0 100644 +--- a/doc/examples/Makefile.am ++++ b/doc/examples/Makefile.am +@@ -169,7 +169,10 @@ all-local: + CFLAGS='$(CFLAGS)' \ + AM_CFLAGS='$(AM_CFLAGS)' \ + LDFLAGS="$(LDFLAGS)" \ +- AM_LDFLAGS='$(AM_LDFLAGS) -L../../../src/lib/lttng-ust/.libs -Wl,-rpath="$(PWD)/../../src/lib/lttng-ust/.libs/" -Wl,-rpath-link="$(PWD)/../../src/lib/lttng-ust/.libs/"' \ ++ AM_LDFLAGS='$(AM_LDFLAGS) -L../../../src/lib/lttng-ust/.libs -L../../../src/lib/lttng-ust-common/.libs -L../../../src/lib/lttng-ust-tracepoint/.libs \ ++ -Wl,-rpath="$(abs_top_builddir)/src/lib/lttng-ust/.libs/" \ ++ -Wl,-rpath-link="$(abs_top_builddir)/src/lib/lttng-ust-common/.libs/" \ ++ -Wl,-rpath-link="$(abs_top_builddir)/src/lib/lttng-ust-tracepoint/.libs/"' \ + LTTNG_GEN_TP_PATH="$$rel_src_subdir$(top_srcdir)/tools/" \ + AM_V_P="$(AM_V_P)" \ + AM_V_at="$(AM_V_at)" \ +@@ -222,10 +225,14 @@ all-local: + CXX="$(CXX)" \ + $(CMAKE) \ + -DCMAKE_INCLUDE_PATH="$(abs_top_srcdir)/include;$(abs_top_builddir)/include" \ +- -DCMAKE_LIBRARY_PATH="$(abs_top_builddir)/src/lib/lttng-ust/.libs" \ ++ -DCMAKE_LIBRARY_PATH="$(abs_top_builddir)/src/lib/lttng-ust/.libs;$(abs_top_builddir)/src/lib/lttng-ust-common/.libs;$(abs_top_builddir)/src/lib/lttng-ust-tracepoint/.libs" \ + -DCMAKE_C_FLAGS="$(AM_CFLAGS) $(CPPFLAGS) $(CFLAGS)" \ + -DCMAKE_CXX_FLAGS="$(AM_CXXFLAGS) $(CXXFLAGS) $(CPPFLAGS)" \ +- -DCMAKE_EXE_LINKER_FLAGS="$(AM_LDFLAGS) $(LDFLAGS)" \ ++ -DCMAKE_EXE_LINKER_FLAGS="$(AM_LDFLAGS) $(LDFLAGS) \ ++ -L../../../src/lib/lttng-ust/.libs -L../../../src/lib/lttng-ust-common/.libs -L../../../src/lib/lttng-ust-tracepoint/.libs \ ++ -Wl,-rpath=$(abs_top_builddir)/src/lib/lttng-ust/.libs/ \ ++ -Wl,-rpath-link=$(abs_top_builddir)/src/lib/lttng-ust-common/.libs/ \ ++ -Wl,-rpath-link=$(abs_top_builddir)/src/lib/lttng-ust-tracepoint/.libs/" \ + .. && \ + $(MAKE) \ + ) || exit 1; \ +-- +2.43.0 + diff --git a/meta/recipes-kernel/lttng/lttng-ust/0001-Makefile.am-update-rpath-link.patch b/meta/recipes-kernel/lttng/lttng-ust/0001-Makefile.am-update-rpath-link.patch deleted file mode 100644 index 6aca8f85fa..0000000000 --- a/meta/recipes-kernel/lttng/lttng-ust/0001-Makefile.am-update-rpath-link.patch +++ /dev/null @@ -1,33 +0,0 @@ -From 7d053804ab3823d40ae10d90f4efc49dbfb4cb66 Mon Sep 17 00:00:00 2001 -From: Changqing Li -Date: Wed, 22 Sep 2021 16:33:10 +0800 -Subject: [PATCH] Makefile.am: update rpath link - -since commit 6339062 Move liblttng-ust to 'src/lib/', -liblttng-ust.so/liblttng-ust-common.so/liblttng-ust-tracepoint.so -'s location changed from one dir to multiple dirs. which make below -error: -ld: warning: liblttng-ust-common.so.1, needed by ../../../src/lib/lttng-ust/.libs/liblttng-ust.so, not found (try using -rpath or -rpath-link) -ld: warning: liblttng-ust-tracepoint.so.1, needed by ../../../src/lib/lttng-ust/.libs/liblttng-ust.so, not found (try using -rpath or -rpath-link) - -Upstream-Status: Submitted [https://github.com/lttng/lttng-ust/pull/61] - -Signed-off-by: Changqing Li - ---- - doc/examples/Makefile.am | 2 +- - 1 file changed, 1 insertion(+), 1 deletion(-) - -diff --git a/doc/examples/Makefile.am b/doc/examples/Makefile.am -index 57782cc..d46caa6 100644 ---- a/doc/examples/Makefile.am -+++ b/doc/examples/Makefile.am -@@ -167,7 +167,7 @@ all-local: - CFLAGS='$(CFLAGS)' \ - AM_CFLAGS='$(AM_CFLAGS)' \ - LDFLAGS="$(LDFLAGS)" \ -- AM_LDFLAGS='$(AM_LDFLAGS) -L../../../src/lib/lttng-ust/.libs -Wl,-rpath="$(PWD)/../../src/lib/lttng-ust/.libs/" -Wl,-rpath-link="$(PWD)/../../src/lib/lttng-ust/.libs/"' \ -+ AM_LDFLAGS='$(AM_LDFLAGS) -L../../../src/lib/lttng-ust/.libs -Wl,-rpath="$(PWD)/../../src/lib/lttng-ust/.libs/" -Wl,-rpath-link="$(PWD)/../../src/lib/lttng-ust/.libs/:$(PWD)/../../src/lib/lttng-ust-tracepoint/.libs:$(PWD)/../../src/lib/lttng-ust-common/.libs/"' \ - LTTNG_GEN_TP_PATH="$$rel_src_subdir$(top_srcdir)/tools/" \ - AM_V_P="$(AM_V_P)" \ - AM_V_at="$(AM_V_at)" \ diff --git a/meta/recipes-kernel/lttng/lttng-ust_2.13.8.bb b/meta/recipes-kernel/lttng/lttng-ust_2.13.8.bb index dddd3a5004..bf2524bdc0 100644 --- a/meta/recipes-kernel/lttng/lttng-ust_2.13.8.bb +++ b/meta/recipes-kernel/lttng/lttng-ust_2.13.8.bb @@ -31,7 +31,7 @@ PE = "2" SRC_URI = "https://lttng.org/files/lttng-ust/lttng-ust-${PV}.tar.bz2 \ file://0001-python-lttngust-Makefile.am-Add-install-lib-to-setup.patch \ file://0001-lttng-ust-common-link-with-liburcu-explicitly.patch \ - file://0001-Makefile.am-update-rpath-link.patch \ + file://0001-Fix-Build-examples-when-rpath-is-stripped-from-in-bu.patch \ " SRC_URI[sha256sum] = "d4ef98dab9a37ad4f524ccafdfd50af4f266039b528dd5afabce78e49024d937"