From d99f184df7a9f8bf1cafed503cca34c616134fcd Mon Sep 17 00:00:00 2001
From: Aleksandr Solovev <aleksandr.solovev@intel.com>
Date: Tue, 5 Nov 2024 16:56:03 +0100
Subject: [PATCH] fix: add cycle linking for mkl_core(bazel) (#2967)

---
 .ci/pipeline/ci.yml          | 15 ++++++---------
 dev/bazel/deps/mkl.tpl.BUILD | 13 ++++++++++++-
 2 files changed, 18 insertions(+), 10 deletions(-)

diff --git a/.ci/pipeline/ci.yml b/.ci/pipeline/ci.yml
index 227bc890af7..b0d1433d9d5 100755
--- a/.ci/pipeline/ci.yml
+++ b/.ci/pipeline/ci.yml
@@ -534,15 +534,12 @@ jobs:
                  --test_thread_mode=par
     displayName: 'cpp-examples-thread-release-static'
 
-  # The issue that bazel doesnt link MKL libs via -Wl, --start-group..
-  # oneDAL make build pass this test
-  # TODO: add cycle linking in bazel
-  # - script: |
-  #     export DALROOT=`pwd`/bazel-bin/release/daal/latest
-      # bazel test //examples/oneapi/cpp:all \
-      #            --test_link_mode=release_dynamic \
-      #            --test_thread_mode=par
-  #   displayName: 'cpp-examples-thread-release-dynamic'
+  - script: |
+      export DALROOT=`pwd`/bazel-bin/release/daal/latest
+      bazel test //examples/oneapi/cpp:all \
+                 --test_link_mode=release_dynamic \
+                 --test_thread_mode=par
+    displayName: 'cpp-examples-thread-release-dynamic'
 
   - script: |
       bazel test //cpp/daal:tests
diff --git a/dev/bazel/deps/mkl.tpl.BUILD b/dev/bazel/deps/mkl.tpl.BUILD
index cf492886f09..161aec2991b 100644
--- a/dev/bazel/deps/mkl.tpl.BUILD
+++ b/dev/bazel/deps/mkl.tpl.BUILD
@@ -22,11 +22,22 @@ cc_library(
         "lib/libmkl_tbb_thread.a",
     ],
     linkopts = [
+        # The source libraries have circular symbol dependencies. To successfully build this cc_library,
+        # oneMKL requires wrapping the libraries with -Wl,--start-group and -Wl,--end-group.
+        "-Wl,--start-group",
+        "$(location lib/libmkl_core.a)",
+        "$(location lib/libmkl_intel_ilp64.a)",
+        "$(location lib/libmkl_tbb_thread.a)",
+        "-Wl,--end-group",
         "-lpthread",
+        "-lm",
+        "-ldl",
     ],
     deps = [
         ":headers",
-    ]
+    ],
+    alwayslink = 1,
+    linkstatic = 1,
 )
 
 cc_library(