From 3192b172137815245881e8a0c7c2d9f3f106938b Mon Sep 17 00:00:00 2001
From: Siddesh-Sangodkar1 <siddesh.sangodkar1@ibm.com>
Date: Wed, 2 Sep 2026 20:30:23 +0530
Subject: [PATCH 1/8] Added xgboost-cpu 3.4.1

---
 x/xgboost-cpu/LICENSE                       | 201 ++++++++++++++++++++
 x/xgboost-cpu/build_info.json               |  19 ++
 x/xgboost-cpu/xgboost-cpu_3.4.1_ubi_10.2.sh | 150 +++++++++++++++
 3 files changed, 370 insertions(+)
 create mode 100644 x/xgboost-cpu/LICENSE
 create mode 100644 x/xgboost-cpu/build_info.json
 create mode 100644 x/xgboost-cpu/xgboost-cpu_3.4.1_ubi_10.2.sh

diff --git a/x/xgboost-cpu/LICENSE b/x/xgboost-cpu/LICENSE
new file mode 100644
index 0000000000..90c0ff9368
--- /dev/null
+++ b/x/xgboost-cpu/LICENSE
@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
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+      "License" shall mean the terms and conditions for use, reproduction,
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+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
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+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
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+      and issue tracking systems that are managed by, or on behalf of, the
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+      designated in writing by the copyright owner as "Not a Contribution."
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+      "Contributor" shall mean Licensor and any individual or Legal Entity
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+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
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+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
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+      (except as stated in this section) patent license to make, have made,
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+      Contribution(s) alone or by combination of their Contribution(s)
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+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
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+   4. Redistribution. You may reproduce and distribute copies of the
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+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
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+          the Derivative Works; and
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+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
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+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
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+          documentation, if provided along with the Derivative Works; or,
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+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
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+          that such additional attribution notices cannot be construed
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+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
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+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
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+      the terms of any separate license agreement you may have executed
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+   6. Trademarks. This License does not grant permission to use the trade
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+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
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+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
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+   Unless required by applicable law or agreed to in writing, software
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diff --git a/x/xgboost-cpu/build_info.json b/x/xgboost-cpu/build_info.json
new file mode 100644
index 0000000000..5d84927d02
--- /dev/null
+++ b/x/xgboost-cpu/build_info.json
@@ -0,0 +1,19 @@
+{
+    "maintainer": "Siddesh-Sangodkar1",
+    "package_name": "xgboost-cpu",
+    "github_url": "https://github.com/dmlc/xgboost",
+    "version": "3.4.1",
+    "default_branch": "master",
+    "package_dir": "x/xgboost-cpu",
+    "build_script": "xgboost-cpu_3.4.1_ubi_10.2.sh",
+    "docker_build": false,
+    "validate_build_script": true,
+    "use_non_root_user": false,
+    "wheel_build": true,
+    "3.4.1": {
+        "build_script": "xgboost-cpu_3.4.1_ubi_10.2.sh"
+    },
+    "*": {
+        "build_script": "xgboost-cpu_3.4.1_ubi_10.2.sh"
+    }
+}
diff --git a/x/xgboost-cpu/xgboost-cpu_3.4.1_ubi_10.2.sh b/x/xgboost-cpu/xgboost-cpu_3.4.1_ubi_10.2.sh
new file mode 100644
index 0000000000..e529974f2d
--- /dev/null
+++ b/x/xgboost-cpu/xgboost-cpu_3.4.1_ubi_10.2.sh
@@ -0,0 +1,150 @@
+#!/bin/bash -e
+# -----------------------------------------------------------------------------
+#
+# Package          : xgboost-cpu
+# Version          : 3.4.1
+# Source repo      : https://github.com/dmlc/xgboost
+# Tested on        : UBI:10.2
+# Language         : Python
+# Ci-Check         : True
+# Script License   : Apache License, Version 2 or later
+# Maintainer       : Siddesh Sangodkar <siddesh.sangodkar1@ibm.com>
+#
+# Disclaimer: This script has been tested in root mode on given
+# ==========  platform using the mentioned version of the package.
+#             It may not work as expected with newer versions of the
+#             package and/or distribution. In such case, please
+#             contact "Maintainer" of this script.
+#
+# Note: xgboost-cpu is the CPU-only variant of XGBoost (USE_CUDA=OFF).
+#       It is built from the PyPI source distribution (sdist) which
+#       includes the C++ tree under cpp_src/ and uses scikit-build-core
+#       as the PEP 517 backend (CMake + Ninja internally).
+#       python3.14 requires scikit-build-core >=0.11.0 which is fetched
+#       at build time by pip via the build isolation requirements.
+#
+# -----------------------------------------------------------------------------
+
+set -e
+
+PACKAGE_NAME=xgboost-cpu
+PACKAGE_VERSION=${1:-3.4.1}
+PACKAGE_URL=https://github.com/dmlc/xgboost
+CURRENT_DIR=$(pwd)
+WHEEL_DIR="${CURRENT_DIR}/wheels"
+mkdir -p "${WHEEL_DIR}"
+
+# ---------------------------------------------------------------------------
+# System dependencies
+# ---------------------------------------------------------------------------
+yum install -y python3.14 python3.14-devel python3.14-pip \
+    git gcc-toolset-15 gcc-toolset-15-gcc gcc-toolset-15-gcc-c++ \
+    cmake ninja-build make \
+    openssl-devel libffi-devel zlib-devel \
+    which curl tar
+
+# UBI 10 dropped SCL — guard block
+if [[ -f /opt/rh/gcc-toolset-15/enable ]]; then
+    source /opt/rh/gcc-toolset-15/enable
+elif [[ -d /opt/rh/gcc-toolset-15/root/usr/bin ]]; then
+    export PATH="/opt/rh/gcc-toolset-15/root/usr/bin:$PATH"
+    export LD_LIBRARY_PATH="/opt/rh/gcc-toolset-15/root/usr/lib64:$LD_LIBRARY_PATH"
+else
+    echo "ERROR: gcc-toolset-15 not found"
+    exit 1
+fi
+
+echo "Using gcc: $(gcc --version | head -1)"
+echo "Using cmake: $(cmake --version | head -1)"
+echo "Using python: $(python3.14 --version)"
+
+# ---------------------------------------------------------------------------
+# Python build tools
+# ---------------------------------------------------------------------------
+python3.14 -m pip install --upgrade pip setuptools wheel build
+python3.14 -m pip install "scikit-build-core>=0.11.0" cmake ninja
+
+# ---------------------------------------------------------------------------
+# Download xgboost-cpu source distribution from PyPI
+# The sdist bundles the C++ tree under cpp_src/ — no git submodule needed.
+# ---------------------------------------------------------------------------
+SDIST_URL="https://files.pythonhosted.org/packages/99/98/c35e165aff81e43b43411662219764abbd246adae2547d360b23194cf75f/xgboost_cpu-${PACKAGE_VERSION}.tar.gz"
+
+cd "${CURRENT_DIR}"
+curl -sSL --fail -o "xgboost_cpu-${PACKAGE_VERSION}.tar.gz" "${SDIST_URL}"
+tar -xzf "xgboost_cpu-${PACKAGE_VERSION}.tar.gz"
+cd "xgboost_cpu-${PACKAGE_VERSION}"
+
+# ---------------------------------------------------------------------------
+# Build the wheel via scikit-build-core (CMake + Ninja, CPU-only)
+# USE_CUDA=OFF is the default; USE_OPENMP=ON for multi-core ppc64le perf.
+# ---------------------------------------------------------------------------
+export CMAKE_ARGS="-DUSE_CUDA=OFF -DUSE_OPENMP=ON -DUSE_NCCL=OFF"
+
+if ! python3.14 -m build --wheel --no-isolation --outdir="${WHEEL_DIR}"; then
+    echo "------------------$PACKAGE_NAME:Build_fails-------------------------------------"
+    echo "$PACKAGE_URL $PACKAGE_NAME"
+    echo "$PACKAGE_NAME  |  $PACKAGE_URL | $PACKAGE_VERSION | GitHub | Fail |  Build_Fails"
+    exit 1
+fi
+
+# Copy wheel to CURRENT_DIR for create_wheel_wrapper.sh compatibility
+cp "${WHEEL_DIR}"/*.whl "${CURRENT_DIR}/" 2>/dev/null || true
+
+# ---------------------------------------------------------------------------
+# Install wheel dependencies and the wheel itself
+# Pip 26+ blocks file:// URIs to non-localhost paths; downgrade to pip 25
+# (last version without this restriction) before the local wheel install.
+# ---------------------------------------------------------------------------
+IBM_WHEELS="https://wheels.developerfirst.ibm.com/ppc64le/linux/+simple/"
+python3.14 -m pip install \
+    --trusted-host wheels.developerfirst.ibm.com \
+    --extra-index-url "${IBM_WHEELS}" \
+    --prefer-binary \
+    "numpy==2.5.1" scipy
+
+# Install the wheel using python -m installer (bypasses pip's URL checks)
+WHL=$(ls "${WHEEL_DIR}"/xgboost_cpu-*.whl | head -1)
+python3.14 -m pip install installer
+python3.14 -m installer "${WHL}"
+
+# Return to a neutral directory so Python doesn't pick up the source tree
+cd "${CURRENT_DIR}"
+
+if ! python3.14 - <<'PYEOF'
+import sys
+import xgboost as xgb
+import numpy as np
+
+print(f"xgboost version: {xgb.__version__}")
+
+# Basic DMatrix and training smoke test
+X = np.array([[1.0, 2.0], [3.0, 4.0], [5.0, 6.0], [7.0, 8.0]])
+y = np.array([0, 1, 0, 1])
+dtrain = xgb.DMatrix(X, label=y)
+
+params = {
+    "max_depth": 2,
+    "eta": 0.3,
+    "objective": "binary:logistic",
+    "device": "cpu",
+}
+bst = xgb.train(params, dtrain, num_boost_round=3)
+preds = bst.predict(dtrain)
+assert len(preds) == 4, f"Expected 4 predictions, got {len(preds)}"
+print(f"Predictions: {preds}")
+print("PASS  xgboost basic train/predict")
+print("All tests passed.")
+sys.exit(0)
+PYEOF
+then
+    echo "------------------$PACKAGE_NAME:Install_success_but_test_fails---------------------"
+    echo "$PACKAGE_URL $PACKAGE_NAME"
+    echo "$PACKAGE_NAME  |  $PACKAGE_URL | $PACKAGE_VERSION | GitHub | Fail |  Install_success_but_test_Fails"
+    exit 2
+else
+    echo "------------------$PACKAGE_NAME:Install_&_test_both_success-------------------------"
+    echo "$PACKAGE_URL $PACKAGE_NAME"
+    echo "$PACKAGE_NAME  |  $PACKAGE_URL | $PACKAGE_VERSION | GitHub  | Pass |  Both_Install_and_Test_Success"
+    exit 0
+fi

From 7dc20cdfdaace9d177b2d387985c0d206126544c Mon Sep 17 00:00:00 2001
From: Siddesh-Sangodkar1 <siddesh.sangodkar1@ibm.com>
Date: Thu, 3 Sep 2026 17:57:41 +0530
Subject: [PATCH 2/8] move script to xgboost directory

---
 x/xgboost-cpu/LICENSE                         | 201 ------------------
 x/xgboost-cpu/build_info.json                 |  19 --
 x/xgboost/build_info.json                     |   5 +-
 .../xgboost-cpu_3.4.1_ubi_10.2.sh             |   0
 4 files changed, 4 insertions(+), 221 deletions(-)
 delete mode 100644 x/xgboost-cpu/LICENSE
 delete mode 100644 x/xgboost-cpu/build_info.json
 rename x/{xgboost-cpu => xgboost}/xgboost-cpu_3.4.1_ubi_10.2.sh (100%)

diff --git a/x/xgboost-cpu/LICENSE b/x/xgboost-cpu/LICENSE
deleted file mode 100644
index 90c0ff9368..0000000000
--- a/x/xgboost-cpu/LICENSE
+++ /dev/null
@@ -1,201 +0,0 @@
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
-
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
-
-      "Legal Entity" shall mean the union of the acting entity and all
-      other entities that control, are controlled by, or are under common
-      control with that entity. For the purposes of this definition,
-      "control" means (i) the power, direct or indirect, to cause the
-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
-
-      "You" (or "Your") shall mean an individual or Legal Entity
-      exercising permissions granted by this License.
-
-      "Source" form shall mean the preferred form for making modifications,
-      including but not limited to software source code, documentation
-      source, and configuration files.
-
-      "Object" form shall mean any form resulting from mechanical
-      transformation or translation of a Source form, including but
-      not limited to compiled object code, generated documentation,
-      and conversions to other media types.
-
-      "Work" shall mean the work of authorship, whether in Source or
-      Object form, made available under the License, as indicated by a
-      copyright notice that is included in or attached to the work
-      (an example is provided in the Appendix below).
-
-      "Derivative Works" shall mean any work, whether in Source or Object
-      form, that is based on (or derived from) the Work and for which the
-      editorial revisions, annotations, elaborations, or other modifications
-      represent, as a whole, an original work of authorship. For the purposes
-      of this License, Derivative Works shall not include works that remain
-      separable from, or merely link (or bind by name) to the interfaces of,
-      the Work and Derivative Works thereof.
-
-      "Contribution" shall mean any work of authorship, including
-      the original version of the Work and any modifications or additions
-      to that Work or Derivative Works thereof, that is intentionally
-      submitted to Licensor for inclusion in the Work by the copyright owner
-      or by an individual or Legal Entity authorized to submit on behalf of
-      the copyright owner. For the purposes of this definition, "submitted"
-      means any form of electronic, verbal, or written communication sent
-      to the Licensor or its representatives, including but not limited to
-      communication on electronic mailing lists, source code control systems,
-      and issue tracking systems that are managed by, or on behalf of, the
-      Licensor for the purpose of discussing and improving the Work, but
-      excluding communication that is conspicuously marked or otherwise
-      designated in writing by the copyright owner as "Not a Contribution."
-
-      "Contributor" shall mean Licensor and any individual or Legal Entity
-      on behalf of whom a Contribution has been received by Licensor and
-      subsequently incorporated within the Work.
-
-   2. Grant of Copyright License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      copyright license to reproduce, prepare Derivative Works of,
-      publicly display, publicly perform, sublicense, and distribute the
-      Work and such Derivative Works in Source or Object form.
-
-   3. Grant of Patent License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      (except as stated in this section) patent license to make, have made,
-      use, offer to sell, sell, import, and otherwise transfer the Work,
-      where such license applies only to those patent claims licensable
-      by such Contributor that are necessarily infringed by their
-      Contribution(s) alone or by combination of their Contribution(s)
-      with the Work to which such Contribution(s) was submitted. If You
-      institute patent litigation against any entity (including a
-      cross-claim or counterclaim in a lawsuit) alleging that the Work
-      or a Contribution incorporated within the Work constitutes direct
-      or contributory patent infringement, then any patent licenses
-      granted to You under this License for that Work shall terminate
-      as of the date such litigation is filed.
-
-   4. Redistribution. You may reproduce and distribute copies of the
-      Work or Derivative Works thereof in any medium, with or without
-      modifications, and in Source or Object form, provided that You
-      meet the following conditions:
-
-      (a) You must give any other recipients of the Work or
-          Derivative Works a copy of this License; and
-
-      (b) You must cause any modified files to carry prominent notices
-          stating that You changed the files; and
-
-      (c) You must retain, in the Source form of any Derivative Works
-          that You distribute, all copyright, patent, trademark, and
-          attribution notices from the Source form of the Work,
-          excluding those notices that do not pertain to any part of
-          the Derivative Works; and
-
-      (d) If the Work includes a "NOTICE" text file as part of its
-          distribution, then any Derivative Works that You distribute must
-          include a readable copy of the attribution notices contained
-          within such NOTICE file, excluding those notices that do not
-          pertain to any part of the Derivative Works, in at least one
-          of the following places: within a NOTICE text file distributed
-          as part of the Derivative Works; within the Source form or
-          documentation, if provided along with the Derivative Works; or,
-          within a display generated by the Derivative Works, if and
-          wherever such third-party notices normally appear. The contents
-          of the NOTICE file are for informational purposes only and
-          do not modify the License. You may add Your own attribution
-          notices within Derivative Works that You distribute, alongside
-          or as an addendum to the NOTICE text from the Work, provided
-          that such additional attribution notices cannot be construed
-          as modifying the License.
-
-      You may add Your own copyright statement to Your modifications and
-      may provide additional or different license terms and conditions
-      for use, reproduction, or distribution of Your modifications, or
-      for any such Derivative Works as a whole, provided Your use,
-      reproduction, and distribution of the Work otherwise complies with
-      the conditions stated in this License.
-
-   5. Submission of Contributions. Unless You explicitly state otherwise,
-      any Contribution intentionally submitted for inclusion in the Work
-      by You to the Licensor shall be under the terms and conditions of
-      this License, without any additional terms or conditions.
-      Notwithstanding the above, nothing herein shall supersede or modify
-      the terms of any separate license agreement you may have executed
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-   7. Disclaimer of Warranty. Unless required by applicable law or
-      agreed to in writing, Licensor provides the Work (and each
-      Contributor provides its Contributions) on an "AS IS" BASIS,
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-      appropriateness of using or redistributing the Work and assume any
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-   8. Limitation of Liability. In no event and under no legal theory,
-      whether in tort (including negligence), contract, or otherwise,
-      unless required by applicable law (such as deliberate and grossly
-      negligent acts) or agreed to in writing, shall any Contributor be
-      liable to You for damages, including any direct, indirect, special,
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-      or other liability obligations and/or rights consistent with this
-      License. However, in accepting such obligations, You may act only
-      on Your own behalf and on Your sole responsibility, not on behalf
-      of any other Contributor, and only if You agree to indemnify,
-      defend, and hold each Contributor harmless for any liability
-      incurred by, or claims asserted against, such Contributor by reason
-      of your accepting any such warranty or additional liability.
-
-   END OF TERMS AND CONDITIONS
-
-   APPENDIX: How to apply the Apache License to your work.
-
-      To apply the Apache License to your work, attach the following
-      boilerplate notice, with the fields enclosed by brackets "{}"
-      replaced with your own identifying information. (Don't include
-      the brackets!)  The text should be enclosed in the appropriate
-      comment syntax for the file format. We also recommend that a
-      file or class name and description of purpose be included on the
-      same "printed page" as the copyright notice for easier
-      identification within third-party archives.
-
-   Copyright (c) 2019 by Contributors
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
diff --git a/x/xgboost-cpu/build_info.json b/x/xgboost-cpu/build_info.json
deleted file mode 100644
index 5d84927d02..0000000000
--- a/x/xgboost-cpu/build_info.json
+++ /dev/null
@@ -1,19 +0,0 @@
-{
-    "maintainer": "Siddesh-Sangodkar1",
-    "package_name": "xgboost-cpu",
-    "github_url": "https://github.com/dmlc/xgboost",
-    "version": "3.4.1",
-    "default_branch": "master",
-    "package_dir": "x/xgboost-cpu",
-    "build_script": "xgboost-cpu_3.4.1_ubi_10.2.sh",
-    "docker_build": false,
-    "validate_build_script": true,
-    "use_non_root_user": false,
-    "wheel_build": true,
-    "3.4.1": {
-        "build_script": "xgboost-cpu_3.4.1_ubi_10.2.sh"
-    },
-    "*": {
-        "build_script": "xgboost-cpu_3.4.1_ubi_10.2.sh"
-    }
-}
diff --git a/x/xgboost/build_info.json b/x/xgboost/build_info.json
index 27ec0d4f89..d405481241 100644
--- a/x/xgboost/build_info.json
+++ b/x/xgboost/build_info.json
@@ -14,7 +14,10 @@
   "v1.6.2": {
     "build_script": "xgboost_ubi_9.3.sh"
   },
+  "3.4.1": {
+        "build_script": "xgboost-cpu_3.4.1_ubi_10.2.sh"
+    },
   "*": {
     "build_script": "xgboost_3.0.1_ubi_9.3.sh"
-  }
+    }
 }
diff --git a/x/xgboost-cpu/xgboost-cpu_3.4.1_ubi_10.2.sh b/x/xgboost/xgboost-cpu_3.4.1_ubi_10.2.sh
similarity index 100%
rename from x/xgboost-cpu/xgboost-cpu_3.4.1_ubi_10.2.sh
rename to x/xgboost/xgboost-cpu_3.4.1_ubi_10.2.sh

From e39888c32baef021937a9fc1deb5e6257c2a7400 Mon Sep 17 00:00:00 2001
From: Siddesh Sangodkar <siddesh226@gmail.com>
Date: Fri, 4 Sep 2026 10:53:52 +0530
Subject: [PATCH 3/8] Update build_info.json to remove old build script

Removed deprecated build script entry for version 3.0.1.
---
 x/xgboost/build_info.json | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/x/xgboost/build_info.json b/x/xgboost/build_info.json
index d405481241..4452cc9084 100644
--- a/x/xgboost/build_info.json
+++ b/x/xgboost/build_info.json
@@ -14,10 +14,10 @@
   "v1.6.2": {
     "build_script": "xgboost_ubi_9.3.sh"
   },
+  "v3.0.1": {
+    "build_script": "xgboost_3.0.1_ubi_9.3.sh"
+  },
   "3.4.1": {
         "build_script": "xgboost-cpu_3.4.1_ubi_10.2.sh"
-    },
-  "*": {
-    "build_script": "xgboost_3.0.1_ubi_9.3.sh"
-    }
+  },
 }

From 251e74963cf14957559adc5e3b264ade4e49bcab Mon Sep 17 00:00:00 2001
From: Siddesh-Sangodkar1 <siddesh.sangodkar1@ibm.com>
Date: Wed, 9 Sep 2026 19:58:11 +0530
Subject: [PATCH 4/8] Added suggested changes

---
 x/xgboost/xgboost-cpu_3.4.1_ubi_10.2.sh | 150 -----------------
 x/xgboost/xgboost_3.4.0_ubi_10.2.sh     | 209 ++++++++++++++++++++++++
 2 files changed, 209 insertions(+), 150 deletions(-)
 delete mode 100644 x/xgboost/xgboost-cpu_3.4.1_ubi_10.2.sh
 create mode 100644 x/xgboost/xgboost_3.4.0_ubi_10.2.sh

diff --git a/x/xgboost/xgboost-cpu_3.4.1_ubi_10.2.sh b/x/xgboost/xgboost-cpu_3.4.1_ubi_10.2.sh
deleted file mode 100644
index e529974f2d..0000000000
--- a/x/xgboost/xgboost-cpu_3.4.1_ubi_10.2.sh
+++ /dev/null
@@ -1,150 +0,0 @@
-#!/bin/bash -e
-# -----------------------------------------------------------------------------
-#
-# Package          : xgboost-cpu
-# Version          : 3.4.1
-# Source repo      : https://github.com/dmlc/xgboost
-# Tested on        : UBI:10.2
-# Language         : Python
-# Ci-Check         : True
-# Script License   : Apache License, Version 2 or later
-# Maintainer       : Siddesh Sangodkar <siddesh.sangodkar1@ibm.com>
-#
-# Disclaimer: This script has been tested in root mode on given
-# ==========  platform using the mentioned version of the package.
-#             It may not work as expected with newer versions of the
-#             package and/or distribution. In such case, please
-#             contact "Maintainer" of this script.
-#
-# Note: xgboost-cpu is the CPU-only variant of XGBoost (USE_CUDA=OFF).
-#       It is built from the PyPI source distribution (sdist) which
-#       includes the C++ tree under cpp_src/ and uses scikit-build-core
-#       as the PEP 517 backend (CMake + Ninja internally).
-#       python3.14 requires scikit-build-core >=0.11.0 which is fetched
-#       at build time by pip via the build isolation requirements.
-#
-# -----------------------------------------------------------------------------
-
-set -e
-
-PACKAGE_NAME=xgboost-cpu
-PACKAGE_VERSION=${1:-3.4.1}
-PACKAGE_URL=https://github.com/dmlc/xgboost
-CURRENT_DIR=$(pwd)
-WHEEL_DIR="${CURRENT_DIR}/wheels"
-mkdir -p "${WHEEL_DIR}"
-
-# ---------------------------------------------------------------------------
-# System dependencies
-# ---------------------------------------------------------------------------
-yum install -y python3.14 python3.14-devel python3.14-pip \
-    git gcc-toolset-15 gcc-toolset-15-gcc gcc-toolset-15-gcc-c++ \
-    cmake ninja-build make \
-    openssl-devel libffi-devel zlib-devel \
-    which curl tar
-
-# UBI 10 dropped SCL — guard block
-if [[ -f /opt/rh/gcc-toolset-15/enable ]]; then
-    source /opt/rh/gcc-toolset-15/enable
-elif [[ -d /opt/rh/gcc-toolset-15/root/usr/bin ]]; then
-    export PATH="/opt/rh/gcc-toolset-15/root/usr/bin:$PATH"
-    export LD_LIBRARY_PATH="/opt/rh/gcc-toolset-15/root/usr/lib64:$LD_LIBRARY_PATH"
-else
-    echo "ERROR: gcc-toolset-15 not found"
-    exit 1
-fi
-
-echo "Using gcc: $(gcc --version | head -1)"
-echo "Using cmake: $(cmake --version | head -1)"
-echo "Using python: $(python3.14 --version)"
-
-# ---------------------------------------------------------------------------
-# Python build tools
-# ---------------------------------------------------------------------------
-python3.14 -m pip install --upgrade pip setuptools wheel build
-python3.14 -m pip install "scikit-build-core>=0.11.0" cmake ninja
-
-# ---------------------------------------------------------------------------
-# Download xgboost-cpu source distribution from PyPI
-# The sdist bundles the C++ tree under cpp_src/ — no git submodule needed.
-# ---------------------------------------------------------------------------
-SDIST_URL="https://files.pythonhosted.org/packages/99/98/c35e165aff81e43b43411662219764abbd246adae2547d360b23194cf75f/xgboost_cpu-${PACKAGE_VERSION}.tar.gz"
-
-cd "${CURRENT_DIR}"
-curl -sSL --fail -o "xgboost_cpu-${PACKAGE_VERSION}.tar.gz" "${SDIST_URL}"
-tar -xzf "xgboost_cpu-${PACKAGE_VERSION}.tar.gz"
-cd "xgboost_cpu-${PACKAGE_VERSION}"
-
-# ---------------------------------------------------------------------------
-# Build the wheel via scikit-build-core (CMake + Ninja, CPU-only)
-# USE_CUDA=OFF is the default; USE_OPENMP=ON for multi-core ppc64le perf.
-# ---------------------------------------------------------------------------
-export CMAKE_ARGS="-DUSE_CUDA=OFF -DUSE_OPENMP=ON -DUSE_NCCL=OFF"
-
-if ! python3.14 -m build --wheel --no-isolation --outdir="${WHEEL_DIR}"; then
-    echo "------------------$PACKAGE_NAME:Build_fails-------------------------------------"
-    echo "$PACKAGE_URL $PACKAGE_NAME"
-    echo "$PACKAGE_NAME  |  $PACKAGE_URL | $PACKAGE_VERSION | GitHub | Fail |  Build_Fails"
-    exit 1
-fi
-
-# Copy wheel to CURRENT_DIR for create_wheel_wrapper.sh compatibility
-cp "${WHEEL_DIR}"/*.whl "${CURRENT_DIR}/" 2>/dev/null || true
-
-# ---------------------------------------------------------------------------
-# Install wheel dependencies and the wheel itself
-# Pip 26+ blocks file:// URIs to non-localhost paths; downgrade to pip 25
-# (last version without this restriction) before the local wheel install.
-# ---------------------------------------------------------------------------
-IBM_WHEELS="https://wheels.developerfirst.ibm.com/ppc64le/linux/+simple/"
-python3.14 -m pip install \
-    --trusted-host wheels.developerfirst.ibm.com \
-    --extra-index-url "${IBM_WHEELS}" \
-    --prefer-binary \
-    "numpy==2.5.1" scipy
-
-# Install the wheel using python -m installer (bypasses pip's URL checks)
-WHL=$(ls "${WHEEL_DIR}"/xgboost_cpu-*.whl | head -1)
-python3.14 -m pip install installer
-python3.14 -m installer "${WHL}"
-
-# Return to a neutral directory so Python doesn't pick up the source tree
-cd "${CURRENT_DIR}"
-
-if ! python3.14 - <<'PYEOF'
-import sys
-import xgboost as xgb
-import numpy as np
-
-print(f"xgboost version: {xgb.__version__}")
-
-# Basic DMatrix and training smoke test
-X = np.array([[1.0, 2.0], [3.0, 4.0], [5.0, 6.0], [7.0, 8.0]])
-y = np.array([0, 1, 0, 1])
-dtrain = xgb.DMatrix(X, label=y)
-
-params = {
-    "max_depth": 2,
-    "eta": 0.3,
-    "objective": "binary:logistic",
-    "device": "cpu",
-}
-bst = xgb.train(params, dtrain, num_boost_round=3)
-preds = bst.predict(dtrain)
-assert len(preds) == 4, f"Expected 4 predictions, got {len(preds)}"
-print(f"Predictions: {preds}")
-print("PASS  xgboost basic train/predict")
-print("All tests passed.")
-sys.exit(0)
-PYEOF
-then
-    echo "------------------$PACKAGE_NAME:Install_success_but_test_fails---------------------"
-    echo "$PACKAGE_URL $PACKAGE_NAME"
-    echo "$PACKAGE_NAME  |  $PACKAGE_URL | $PACKAGE_VERSION | GitHub | Fail |  Install_success_but_test_Fails"
-    exit 2
-else
-    echo "------------------$PACKAGE_NAME:Install_&_test_both_success-------------------------"
-    echo "$PACKAGE_URL $PACKAGE_NAME"
-    echo "$PACKAGE_NAME  |  $PACKAGE_URL | $PACKAGE_VERSION | GitHub  | Pass |  Both_Install_and_Test_Success"
-    exit 0
-fi
diff --git a/x/xgboost/xgboost_3.4.0_ubi_10.2.sh b/x/xgboost/xgboost_3.4.0_ubi_10.2.sh
new file mode 100644
index 0000000000..6c2a88a546
--- /dev/null
+++ b/x/xgboost/xgboost_3.4.0_ubi_10.2.sh
@@ -0,0 +1,209 @@
+#!/bin/bash -e
+# -----------------------------------------------------------------------------
+#
+# Package          : xgboost
+# Version          : 3.4.0
+# Source repo      : https://github.com/dmlc/xgboost
+# Tested on        : UBI:10.2
+# Language         : Python
+# Ci-Check         : True
+# Script License   : Apache License, Version 2 or later
+# Maintainer       : Siddesh Sangodkar <siddesh.sangodkar1@ibm.com>
+#
+# Disclaimer: This script has been tested in root mode on given
+# ==========  platform using the mentioned version of the package.
+#             It may not work as expected with newer versions of the
+#             package and/or distribution. In such case, please
+#             contact "Maintainer" of this script.
+#
+# Note: xgboost is the CPU-only variant of XGBoost (USE_CUDA=OFF).
+#       Built from the GitHub source tree using CMake + Ninja, then the
+#       Python wheel is produced from python-package/ via pip wheel.
+#       nvidia-nccl-cu12 is removed from pyproject.toml before wheel build
+#       as it is not available on ppc64le.
+#       numpy 2.5.0 is built from source (Meson-python backend) 
+#
+# -----------------------------------------------------------------------------
+
+set -e
+
+PACKAGE_NAME=xgboost
+PACKAGE_VERSION=${1:-3.4.0}
+PACKAGE_URL=https://github.com/dmlc/xgboost
+PACKAGE_DIR=xgboost
+
+CURRENT_DIR=$(pwd)
+NUMPY_VERSION=2.5.0
+
+# ---------------------------------------------------------------------------
+# System dependencies
+# ---------------------------------------------------------------------------
+yum install -y python3.14 python3.14-devel python3.14-pip \
+    git gcc-toolset-15 gcc-toolset-15-gcc gcc-toolset-15-gcc-c++ \
+    gcc-toolset-15-gcc-gfortran \
+    cmake ninja-build make \
+    openblas-devel pkg-config \
+    openssl-devel libffi-devel zlib-devel \
+    which curl tar
+
+# UBI 10 dropped SCL — guard block
+if [[ -f /opt/rh/gcc-toolset-15/enable ]]; then
+    source /opt/rh/gcc-toolset-15/enable
+elif [[ -d /opt/rh/gcc-toolset-15/root/usr/bin ]]; then
+    export PATH="/opt/rh/gcc-toolset-15/root/usr/bin:$PATH"
+    export LD_LIBRARY_PATH="/opt/rh/gcc-toolset-15/root/usr/lib64:$LD_LIBRARY_PATH"
+else
+    echo "ERROR: gcc-toolset-15 not found"
+    exit 1
+fi
+
+echo "Using gcc: $(gcc --version | head -1)"
+echo "Using cmake: $(cmake --version | head -1)"
+echo "Using python: $(python3.14 --version)"
+
+# ---------------------------------------------------------------------------
+# Python build tools and test dependencies
+# ---------------------------------------------------------------------------
+python3.14 -m pip install --upgrade pip setuptools wheel build
+python3.14 -m pip install "meson-python>=0.18.0" "Cython>=3.0.6" meson ninja patchelf
+python3.14 -m pip install packaging pathspec pluggy trove-classifiers scikit-build-core hatchling
+IBM_WHEELS="https://wheels.developerfirst.ibm.com/ppc64le/linux/+simple/"
+python3.14 -m pip install \
+    --trusted-host wheels.developerfirst.ibm.com \
+    --extra-index-url "${IBM_WHEELS}" \
+    --prefer-binary \
+    "pyarrow==23.0.1"
+python3.14 -m pip install pytest hypothesis pandas graphviz
+
+# ---------------------------------------------------------------------------
+# Build numpy from source
+# ---------------------------------------------------------------------------
+echo "=== Building numpy ${NUMPY_VERSION} from source ==="
+cd "${CURRENT_DIR}"
+git clone https://github.com/numpy/numpy numpy-src
+cd numpy-src
+
+if git rev-parse "v${NUMPY_VERSION}" &>/dev/null; then
+    git checkout "v${NUMPY_VERSION}"
+elif git rev-parse "${NUMPY_VERSION}" &>/dev/null; then
+    git checkout "${NUMPY_VERSION}"
+else
+    echo "ERROR: No git tag found for numpy version '${NUMPY_VERSION}'"
+    exit 1
+fi
+
+git submodule sync --recursive
+git submodule update --init --recursive
+
+export PKG_CONFIG_PATH="/usr/lib64/pkgconfig:/usr/share/pkgconfig:${PKG_CONFIG_PATH:-}"
+
+if ! python3.14 -m build --wheel --no-isolation \
+        -Csetup-args="-Dblas=openblas" \
+        -Csetup-args="-Dlapack=openblas" \
+        --outdir="${CURRENT_DIR}/numpy-wheels/"; then
+    echo "ERROR: numpy build failed"
+    exit 1
+fi
+
+NUMPY_WHL=$(find "${CURRENT_DIR}/numpy-wheels" -name "numpy-*.whl" | head -1)
+echo "Installing numpy wheel: ${NUMPY_WHL}"
+python3.14 -m pip install --no-deps --force-reinstall "${NUMPY_WHL}"
+echo "numpy ${NUMPY_VERSION} installed successfully"
+
+# ---------------------------------------------------------------------------
+# Clone and checkout xgboost
+# ---------------------------------------------------------------------------
+cd "${CURRENT_DIR}"
+git clone "${PACKAGE_URL}" "${PACKAGE_DIR}"
+cd "${PACKAGE_DIR}"
+
+if git rev-parse "v${PACKAGE_VERSION}" &>/dev/null; then
+    git checkout "v${PACKAGE_VERSION}"
+elif git rev-parse "${PACKAGE_VERSION}" &>/dev/null; then
+    git checkout "${PACKAGE_VERSION}"
+else
+    echo "ERROR: No git tag found for version '${PACKAGE_VERSION}'"
+    exit 1
+fi
+
+git submodule update --init
+
+export SRC_DIR=$(pwd)
+
+# ---------------------------------------------------------------------------
+# Build the shared library via CMake (CPU-only)
+# ---------------------------------------------------------------------------
+mkdir -p build
+cd build
+
+cmake \
+    -DCMAKE_INSTALL_PREFIX="${CURRENT_DIR}/output" \
+    -DUSE_CUDA=OFF \
+    -DUSE_OPENMP=ON \
+    -DUSE_NCCL=OFF \
+    ..
+
+make VERBOSE=1 -j"$(nproc)"
+cd "${SRC_DIR}"
+
+# ---------------------------------------------------------------------------
+# Build Python wheel from python-package/
+# Remove nvidia-nccl-cu12 dependency — not available on ppc64le.
+# ---------------------------------------------------------------------------
+cd "${SRC_DIR}/python-package"
+sed -i '/nvidia-nccl-cu12/d' pyproject.toml
+
+WHEEL_DIR="${CURRENT_DIR}/wheels"
+mkdir -p "${WHEEL_DIR}"
+
+if ! python3.14 -m pip wheel -w "${WHEEL_DIR}" -v . --no-build-isolation --no-deps; then
+    echo "------------------$PACKAGE_NAME:Build_fails-------------------------------------"
+    echo "$PACKAGE_URL $PACKAGE_NAME"
+    echo "$PACKAGE_NAME  |  $PACKAGE_URL | $PACKAGE_VERSION | GitHub | Fail |  Build_Fails"
+    exit 1
+fi
+
+# Copy wheel to CURRENT_DIR for create_wheel_wrapper.sh compatibility
+cp "${WHEEL_DIR}"/*.whl "${CURRENT_DIR}/" 2>/dev/null || true
+
+# ---------------------------------------------------------------------------
+# Install runtime dependencies and the wheel itself
+# ---------------------------------------------------------------------------
+python3.14 -m pip install scipy
+
+WHL=$(ls "${WHEEL_DIR}"/xgboost-*.whl | head -1)
+python3.14 -m pip install --no-deps --force-reinstall "${WHL}"
+
+# ---------------------------------------------------------------------------
+# Run test suite (skip GPU, distributed, and unavailable extras)
+# ---------------------------------------------------------------------------
+cd "${SRC_DIR}"
+
+if ! python3.14 -m pytest tests/ \
+    --ignore=tests/ci_build/test_r_package.py \
+    --ignore=tests/python/test_cli.py \
+    --ignore=tests/python/test_demos.py \
+    --ignore=tests/python/test_openmp.py \
+    --ignore=tests/python/test_tracker.py \
+    --ignore=tests/python-gpu/ \
+    --ignore=tests/test_distributed/test_gpu_with_dask \
+    --ignore=tests/test_distributed/test_with_dask \
+    --ignore=tests/test_distributed/test_with_spark \
+    --ignore=tests/test_distributed/test_gpu_with_spark \
+    --ignore=tests/test_distributed/test_federated \
+    --ignore=tests/test_distributed/test_gpu_federated \
+    --ignore=tests/python-sycl \
+    --ignore=tests/cross-platform \
+    --ignore=tests/python/test_with_sklearn.py \
+    --disable-warnings \
+    -p no:xfail -v; then
+    echo "------------------$PACKAGE_NAME:Install_success_but_test_fails---------------------"
+    echo "$PACKAGE_URL $PACKAGE_NAME"
+    echo "$PACKAGE_NAME  |  $PACKAGE_URL | $PACKAGE_VERSION | GitHub | Fail |  Install_success_but_test_Fails"
+    exit 2
+else
+    echo "------------------$PACKAGE_NAME:Install_&_test_both_success-------------------------"
+    echo "$PACKAGE_URL $PACKAGE_NAME"
+    echo "$PACKAGE_NAME  |  $PACKAGE_URL | $PACKAGE_VERSION | GitHub  | Pass |  Both_Install_and_Test_Success"
+    exit 0
+fi

From 4daa3589b7f8faf1822e07d93edda88d0fc0b656 Mon Sep 17 00:00:00 2001
From: Siddesh-Sangodkar1 <siddesh.sangodkar1@ibm.com>
Date: Wed, 9 Sep 2026 20:02:56 +0530
Subject: [PATCH 5/8] added build_info.json changes

---
 x/xgboost/build_info.json | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/x/xgboost/build_info.json b/x/xgboost/build_info.json
index d405481241..05407e2e0b 100644
--- a/x/xgboost/build_info.json
+++ b/x/xgboost/build_info.json
@@ -1,23 +1,26 @@
 {
-  "maintainer": "kiranNukal",
+  "maintainer": "Siddesh-Sangodkar1",
   "package_name": "xgboost",
   "github_url": "https://github.com/dmlc/xgboost",
-  "version": "v3.0.1",
+  "version": "3.4.0",
   "wheel_build" : true,
   "default_branch": "master",
   "package_dir": "x/xgboost",
-  "build_script": "xgboost_3.0.1_ubi_9.3.sh",
+  "build_script": "xgboost_3.4.0_ubi_10.2.sh",
   "docker_build": false,
   "validate_build_script": true,
   "use_non_root_user": false,
   "wheel_name": "xgboost-cpu",
   "v1.6.2": {
     "build_script": "xgboost_ubi_9.3.sh"
-  },
-  "3.4.1": {
-        "build_script": "xgboost-cpu_3.4.1_ubi_10.2.sh"
-    },
-  "*": {
+   },
+  "3.0.1": {
     "build_script": "xgboost_3.0.1_ubi_9.3.sh"
+   },
+  "3.4.0": {
+    "build_script": "xgboost_3.4.0_ubi_10.2.sh"
+   },
+  "*": {
+    "build_script": "xgboost_3.4.0_ubi_10.2.sh"
     }
 }

From 50430a4918e38926476a718c646d6425aef894d3 Mon Sep 17 00:00:00 2001
From: Siddesh-Sangodkar1 <siddesh.sangodkar1@ibm.com>
Date: Thu, 17 Sep 2026 10:50:49 +0530
Subject: [PATCH 6/8] added suggested fixes

---
 x/xgboost/build_info.json           |   4 +-
 x/xgboost/xgboost_3.4.0_ubi_10.2.sh | 224 +++++++++++++++-------------
 2 files changed, 122 insertions(+), 106 deletions(-)

diff --git a/x/xgboost/build_info.json b/x/xgboost/build_info.json
index dd23a7ebd7..30d1f74b9e 100644
--- a/x/xgboost/build_info.json
+++ b/x/xgboost/build_info.json
@@ -2,7 +2,7 @@
   "maintainer": "Siddesh-Sangodkar1",
   "package_name": "xgboost",
   "github_url": "https://github.com/dmlc/xgboost",
-  "version": "3.4.0",
+  "version": "v3.4.0",
   "wheel_build" : true,
   "default_branch": "master",
   "package_dir": "x/xgboost",
@@ -17,7 +17,7 @@
   "v3.0.1": {
     "build_script": "xgboost_3.0.1_ubi_9.3.sh"
    },
-  "3.4.0": {
+  "v3.4.0": {
     "build_script": "xgboost_3.4.0_ubi_10.2.sh"
    },
   "*": {
diff --git a/x/xgboost/xgboost_3.4.0_ubi_10.2.sh b/x/xgboost/xgboost_3.4.0_ubi_10.2.sh
index 6c2a88a546..14e721c453 100644
--- a/x/xgboost/xgboost_3.4.0_ubi_10.2.sh
+++ b/x/xgboost/xgboost_3.4.0_ubi_10.2.sh
@@ -2,7 +2,7 @@
 # -----------------------------------------------------------------------------
 #
 # Package          : xgboost
-# Version          : 3.4.0
+# Version          : v3.4.0
 # Source repo      : https://github.com/dmlc/xgboost
 # Tested on        : UBI:10.2
 # Language         : Python
@@ -16,34 +16,37 @@
 #             package and/or distribution. In such case, please
 #             contact "Maintainer" of this script.
 #
-# Note: xgboost is the CPU-only variant of XGBoost (USE_CUDA=OFF).
-#       Built from the GitHub source tree using CMake + Ninja, then the
-#       Python wheel is produced from python-package/ via pip wheel.
-#       nvidia-nccl-cu12 is removed from pyproject.toml before wheel build
-#       as it is not available on ppc64le.
-#       numpy 2.5.0 is built from source (Meson-python backend) 
 #
 # -----------------------------------------------------------------------------
 
 set -e
 
 PACKAGE_NAME=xgboost
-PACKAGE_VERSION=${1:-3.4.0}
+PACKAGE_VERSION=${1:-v3.4.0}
 PACKAGE_URL=https://github.com/dmlc/xgboost
-PACKAGE_DIR=xgboost
 
 CURRENT_DIR=$(pwd)
+
 NUMPY_VERSION=2.5.0
+PYARROW_VERSION=25.0.0
+XGBOOST_SDIST_VERSION="${PACKAGE_VERSION#v}"   # strip leading 'v' for PyPI URL
+
+IBM_WHEELS="https://wheels.developerfirst.ibm.com/ppc64le/linux/+simple/"
+IBM_WHEELS_HOST="wheels.developerfirst.ibm.com"
 
 # ---------------------------------------------------------------------------
 # System dependencies
 # ---------------------------------------------------------------------------
 yum install -y python3.14 python3.14-devel python3.14-pip \
     git gcc-toolset-15 gcc-toolset-15-gcc gcc-toolset-15-gcc-c++ \
-    gcc-toolset-15-gcc-gfortran \
+    gcc-toolset-15-gcc-gfortran gcc-toolset-15-libatomic-devel \
     cmake ninja-build make \
-    openblas-devel pkg-config \
+    openblas-devel libjpeg-turbo-devel pkg-config \
     openssl-devel libffi-devel zlib-devel \
+    wget xz-devel bzip2-devel lz4-devel \
+    libevent libtool patch tzdata binutils \
+    brotli brotli-devel perl-Unicode-Normalize \
+    libatomic graphviz \
     which curl tar
 
 # UBI 10 dropped SCL — guard block
@@ -57,127 +60,141 @@ else
     exit 1
 fi
 
-echo "Using gcc: $(gcc --version | head -1)"
-echo "Using cmake: $(cmake --version | head -1)"
-echo "Using python: $(python3.14 --version)"
+export CC="$(which gcc)"
+export CXX="$(which g++)"
+
 
 # ---------------------------------------------------------------------------
-# Python build tools and test dependencies
+# Python build tools and runtime dependencies
 # ---------------------------------------------------------------------------
 python3.14 -m pip install --upgrade pip setuptools wheel build
-python3.14 -m pip install "meson-python>=0.18.0" "Cython>=3.0.6" meson ninja patchelf
-python3.14 -m pip install packaging pathspec pluggy trove-classifiers scikit-build-core hatchling
-IBM_WHEELS="https://wheels.developerfirst.ibm.com/ppc64le/linux/+simple/"
 python3.14 -m pip install \
-    --trusted-host wheels.developerfirst.ibm.com \
+    "meson-python>=0.18.0" "Cython>=3.0.6" meson ninja patchelf \
+    packaging pathspec pluggy trove-classifiers scikit-build-core hatchling \
+    pytest hypothesis "pandas==3.0.0" graphviz Pillow matplotlib \
+    "numpy==${NUMPY_VERSION}"
+
+python3.14 -m pip install \
+    --trusted-host "${IBM_WHEELS_HOST}" \
     --extra-index-url "${IBM_WHEELS}" \
     --prefer-binary \
-    "pyarrow==23.0.1"
-python3.14 -m pip install pytest hypothesis pandas graphviz
-
-# ---------------------------------------------------------------------------
-# Build numpy from source
-# ---------------------------------------------------------------------------
-echo "=== Building numpy ${NUMPY_VERSION} from source ==="
-cd "${CURRENT_DIR}"
-git clone https://github.com/numpy/numpy numpy-src
-cd numpy-src
-
-if git rev-parse "v${NUMPY_VERSION}" &>/dev/null; then
-    git checkout "v${NUMPY_VERSION}"
-elif git rev-parse "${NUMPY_VERSION}" &>/dev/null; then
-    git checkout "${NUMPY_VERSION}"
-else
-    echo "ERROR: No git tag found for numpy version '${NUMPY_VERSION}'"
-    exit 1
-fi
-
-git submodule sync --recursive
-git submodule update --init --recursive
-
-export PKG_CONFIG_PATH="/usr/lib64/pkgconfig:/usr/share/pkgconfig:${PKG_CONFIG_PATH:-}"
-
-if ! python3.14 -m build --wheel --no-isolation \
-        -Csetup-args="-Dblas=openblas" \
-        -Csetup-args="-Dlapack=openblas" \
-        --outdir="${CURRENT_DIR}/numpy-wheels/"; then
-    echo "ERROR: numpy build failed"
-    exit 1
+    "scipy==1.18.0" "scikit-learn==1.9.0"
+
+# ===========================================================================
+# Build pyarrow 25.0.0 from source
+# (Approach from build-scripts/o/onnx/onnx_1.21.0_ubi_10.2.sh)
+# ===========================================================================
+
+# gcc-toolset-15 ld does not find the system libatomic; create the unversioned
+# symlink that -latomic requires.
+if [[ ! -e /usr/lib64/libatomic.so ]]; then
+    ln -s /usr/lib64/libatomic.so.1 /usr/lib64/libatomic.so
+    echo "Created /usr/lib64/libatomic.so symlink for Arrow C++ build"
 fi
 
-NUMPY_WHL=$(find "${CURRENT_DIR}/numpy-wheels" -name "numpy-*.whl" | head -1)
-echo "Installing numpy wheel: ${NUMPY_WHL}"
-python3.14 -m pip install --no-deps --force-reinstall "${NUMPY_WHL}"
-echo "numpy ${NUMPY_VERSION} installed successfully"
-
 # ---------------------------------------------------------------------------
-# Clone and checkout xgboost
-# ---------------------------------------------------------------------------
-cd "${CURRENT_DIR}"
-git clone "${PACKAGE_URL}" "${PACKAGE_DIR}"
-cd "${PACKAGE_DIR}"
-
-if git rev-parse "v${PACKAGE_VERSION}" &>/dev/null; then
-    git checkout "v${PACKAGE_VERSION}"
-elif git rev-parse "${PACKAGE_VERSION}" &>/dev/null; then
-    git checkout "${PACKAGE_VERSION}"
-else
-    echo "ERROR: No git tag found for version '${PACKAGE_VERSION}'"
-    exit 1
-fi
-
-git submodule update --init
-
-export SRC_DIR=$(pwd)
-
-# ---------------------------------------------------------------------------
-# Build the shared library via CMake (CPU-only)
-# ---------------------------------------------------------------------------
-mkdir -p build
-cd build
-
-cmake \
-    -DCMAKE_INSTALL_PREFIX="${CURRENT_DIR}/output" \
-    -DUSE_CUDA=OFF \
-    -DUSE_OPENMP=ON \
-    -DUSE_NCCL=OFF \
-    ..
-
-make VERBOSE=1 -j"$(nproc)"
-cd "${SRC_DIR}"
-
-# ---------------------------------------------------------------------------
-# Build Python wheel from python-package/
-# Remove nvidia-nccl-cu12 dependency — not available on ppc64le.
-# ---------------------------------------------------------------------------
-cd "${SRC_DIR}/python-package"
-sed -i '/nvidia-nccl-cu12/d' pyproject.toml
+# Step 1: Build and install Arrow C++ 25.0.0 (BUNDLED deps — no manual
+#         protobuf / gRPC / c-ares / re2 build needed)
+# ---------------------------------------------------------------------------
+echo "--- Building Arrow C++ ${PYARROW_VERSION} ---"
+ARROW_TARBALL="https://archive.apache.org/dist/arrow/arrow-${PYARROW_VERSION}/apache-arrow-${PYARROW_VERSION}.tar.gz"
+ARROW_SRC="${CURRENT_DIR}/arrow_src"
+mkdir -p "${ARROW_SRC}"
+curl -sSL --fail -o "${ARROW_SRC}/apache-arrow-${PYARROW_VERSION}.tar.gz" "${ARROW_TARBALL}"
+tar -xzf "${ARROW_SRC}/apache-arrow-${PYARROW_VERSION}.tar.gz" -C "${ARROW_SRC}"
+ARROW_CPP_SRC="${ARROW_SRC}/apache-arrow-${PYARROW_VERSION}/cpp"
+
+mkdir -p "${ARROW_CPP_SRC}/build"
+cmake -S "${ARROW_CPP_SRC}" -B "${ARROW_CPP_SRC}/build" \
+    -GNinja \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DCMAKE_INSTALL_PREFIX=/usr/local \
+    -DCMAKE_EXE_LINKER_FLAGS="-L/usr/lib64" \
+    -DCMAKE_SHARED_LINKER_FLAGS="-L/usr/lib64" \
+    -DCMAKE_MODULE_LINKER_FLAGS="-L/usr/lib64" \
+    -DARROW_BUILD_STATIC=OFF \
+    -DARROW_BUILD_SHARED=ON \
+    -DARROW_PYTHON=ON \
+    -DARROW_DATASET=ON \
+    -DARROW_PARQUET=ON \
+    -DARROW_ACERO=ON \
+    -DARROW_COMPUTE=ON \
+    -DARROW_CSV=ON \
+    -DARROW_JSON=ON \
+    -DARROW_IPC=ON \
+    -DARROW_WITH_ZLIB=ON \
+    -DARROW_WITH_LZ4=ON \
+    -DARROW_WITH_SNAPPY=ON \
+    -DARROW_WITH_ZSTD=ON \
+    -DARROW_WITH_BZ2=ON \
+    -DARROW_DEPENDENCY_SOURCE=BUNDLED \
+    -DARROW_VERBOSE_THIRDPARTY_BUILD=OFF
+cmake --build "${ARROW_CPP_SRC}/build" --parallel "$(nproc)"
+cmake --install "${ARROW_CPP_SRC}/build"
+ldconfig
+
+export Arrow_DIR=/usr/local/lib/cmake/Arrow
+export ArrowDataset_DIR=/usr/local/lib/cmake/ArrowDataset
+export Parquet_DIR=/usr/local/lib/cmake/Parquet
+# Persist so pyarrow can dlopen libarrow*.so at validation time
+export LD_LIBRARY_PATH=/usr/local/lib:/usr/local/lib64:${LD_LIBRARY_PATH:-}
+echo "/usr/local/lib"    > /etc/ld.so.conf.d/arrow-local.conf
+echo "/usr/local/lib64" >> /etc/ld.so.conf.d/arrow-local.conf
+ldconfig
+echo "Arrow C++ ${PYARROW_VERSION} installed successfully"
+
+# ---------------------------------------------------------------------------
+# Step 2: Build pyarrow wheel against the installed Arrow C++
+# ---------------------------------------------------------------------------
+echo "--- Building pyarrow ${PYARROW_VERSION} ---"
+python3.14 -m pip install "scikit-build-core>=0.11.0" cython "setuptools_scm[toml]>=8"
+export PYARROW_REQUIRE_STUB_DOCSTRINGS=OFF
+export CMAKE_BUILD_PARALLEL_LEVEL=$(nproc)
+PYARROW_SDIST="https://files.pythonhosted.org/packages/27/f3/95428098d1fa7d04432fb750eed06b41304c2f6a5d3319985e64db2d9d41/pyarrow-${PYARROW_VERSION}.tar.gz"
+python3.14 -m pip install --no-build-isolation "${PYARROW_SDIST}"
+echo "pyarrow ${PYARROW_VERSION} installed successfully"
+
+# ===========================================================================
+# Build xgboost 3.4.0 from source (scikit-build-core / cmake sdist)
+# ===========================================================================
+echo "--- Building xgboost ${XGBOOST_SDIST_VERSION} ---"
 
 WHEEL_DIR="${CURRENT_DIR}/wheels"
 mkdir -p "${WHEEL_DIR}"
 
-if ! python3.14 -m pip wheel -w "${WHEEL_DIR}" -v . --no-build-isolation --no-deps; then
+# xgboost sdist — scikit-build-core drives the cmake build (USE_CUDA=OFF by
+# default on CPU-only targets).  --no-build-isolation keeps the numpy/scipy
+# already installed above visible to the build backend.
+XGBOOST_SDIST="https://files.pythonhosted.org/packages/7d/11/2b1de4cb9b7eeb042ca49c7d3b3ed2b77e7645ee6c0f99cf616716f3e8d7/xgboost-${XGBOOST_SDIST_VERSION}.tar.gz"
+
+if ! python3.14 -m pip wheel \
+        --no-build-isolation \
+        --no-deps \
+        -w "${WHEEL_DIR}" \
+        "${XGBOOST_SDIST}"; then
     echo "------------------$PACKAGE_NAME:Build_fails-------------------------------------"
     echo "$PACKAGE_URL $PACKAGE_NAME"
     echo "$PACKAGE_NAME  |  $PACKAGE_URL | $PACKAGE_VERSION | GitHub | Fail |  Build_Fails"
     exit 1
 fi
 
-# Copy wheel to CURRENT_DIR for create_wheel_wrapper.sh compatibility
 cp "${WHEEL_DIR}"/*.whl "${CURRENT_DIR}/" 2>/dev/null || true
 
 # ---------------------------------------------------------------------------
-# Install runtime dependencies and the wheel itself
+# Install the xgboost wheel
 # ---------------------------------------------------------------------------
-python3.14 -m pip install scipy
-
 WHL=$(ls "${WHEEL_DIR}"/xgboost-*.whl | head -1)
+echo "Installing xgboost wheel: ${WHL}"
 python3.14 -m pip install --no-deps --force-reinstall "${WHL}"
 
 # ---------------------------------------------------------------------------
-# Run test suite (skip GPU, distributed, and unavailable extras)
+# Run test suite (skip GPU, distributed, and test files that require
+# a live cluster or CUDA)
 # ---------------------------------------------------------------------------
-cd "${SRC_DIR}"
+# Fetch the source tree for tests (not needed for the wheel itself)
+cd "${CURRENT_DIR}"
+git clone --depth 1 --branch "${PACKAGE_VERSION}" "${PACKAGE_URL}" xgboost_src
+cd xgboost_src
 
 if ! python3.14 -m pytest tests/ \
     --ignore=tests/ci_build/test_r_package.py \
@@ -194,7 +211,6 @@ if ! python3.14 -m pytest tests/ \
     --ignore=tests/test_distributed/test_gpu_federated \
     --ignore=tests/python-sycl \
     --ignore=tests/cross-platform \
-    --ignore=tests/python/test_with_sklearn.py \
     --disable-warnings \
     -p no:xfail -v; then
     echo "------------------$PACKAGE_NAME:Install_success_but_test_fails---------------------"

From 4be1ee25312f1016237ba3dde0b3a03378e0523b Mon Sep 17 00:00:00 2001
From: Siddesh-Sangodkar1 <siddesh.sangodkar1@ibm.com>
Date: Tue, 22 Sep 2026 10:51:34 +0530
Subject: [PATCH 7/8] update pandas version

---
 x/xgboost/xgboost_3.4.0_ubi_10.2.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/x/xgboost/xgboost_3.4.0_ubi_10.2.sh b/x/xgboost/xgboost_3.4.0_ubi_10.2.sh
index 14e721c453..bd7ef85a21 100644
--- a/x/xgboost/xgboost_3.4.0_ubi_10.2.sh
+++ b/x/xgboost/xgboost_3.4.0_ubi_10.2.sh
@@ -71,7 +71,7 @@ python3.14 -m pip install --upgrade pip setuptools wheel build
 python3.14 -m pip install \
     "meson-python>=0.18.0" "Cython>=3.0.6" meson ninja patchelf \
     packaging pathspec pluggy trove-classifiers scikit-build-core hatchling \
-    pytest hypothesis "pandas==3.0.0" graphviz Pillow matplotlib \
+    pytest hypothesis "pandas==3.0.5" graphviz Pillow matplotlib \
     "numpy==${NUMPY_VERSION}"
 
 python3.14 -m pip install \

From 4c5359ab523d0ae583d50cca035d83791ab7e35e Mon Sep 17 00:00:00 2001
From: Siddesh-Sangodkar1 <siddesh.sangodkar1@ibm.com>
Date: Tue, 22 Sep 2026 20:25:26 +0530
Subject: [PATCH 8/8] rerun CI

---
 x/xgboost/xgboost_3.4.0_ubi_10.2.sh | 1 -
 1 file changed, 1 deletion(-)

diff --git a/x/xgboost/xgboost_3.4.0_ubi_10.2.sh b/x/xgboost/xgboost_3.4.0_ubi_10.2.sh
index bd7ef85a21..04ec628d17 100644
--- a/x/xgboost/xgboost_3.4.0_ubi_10.2.sh
+++ b/x/xgboost/xgboost_3.4.0_ubi_10.2.sh
@@ -63,7 +63,6 @@ fi
 export CC="$(which gcc)"
 export CXX="$(which g++)"
 
-
 # ---------------------------------------------------------------------------
 # Python build tools and runtime dependencies
 # ---------------------------------------------------------------------------