Fix UMF build on Alpine OS

.github/docker/alpine-3.21.Dockerfile

@@ -0,0 +1,46 @@
+# Copyright (C) 2025 Intel Corporation
+# Under the Apache License v2.0 with LLVM Exceptions. See LICENSE.TXT.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+#
+# Dockerfile - a 'recipe' for Docker to build an image of Alpine
+#              environment for building the Unified Memory Framework project.
+#
+
+# Pull base Alpine image version 3.21
+FROM registry.hub.docker.com/library/alpine@sha256:a8560b36e8b8210634f77d9f7f9efd7ffa463e380b75e2e74aff4511df3ef88c
+
+# Set environment variables
+ENV OS=alpine
+ENV OS_VER=3.21
+
+# Base development packages
+ARG BASE_DEPS="\
+	bash \
+	cmake \
+	git \
+	g++ \
+	make \
+	sudo"
+
+# UMF's dependencies
+ARG UMF_DEPS="\
+	hwloc-dev"
+
+# Dependencies for tests
+ARG TEST_DEPS="\
+	numactl-dev"
+
+# Update and install required packages
+RUN apk update \
+ && apk add --no-cache \
+	${BASE_DEPS} \
+	${TEST_DEPS} \
+	${UMF_DEPS}
+
+# Add a new (non-root) 'test_user'
+ENV USER=test_user
+RUN adduser -D -G wheel ${USER}
+RUN echo '%wheel ALL=(ALL) NOPASSWD: ALL' >> /etc/sudoers
+
+USER test_user

.github/scripts/alpine_build.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+# Copyright (C) 2025 Intel Corporation
+# Under the Apache License v2.0 with LLVM Exceptions. See LICENSE.TXT.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+# alpine_build.sh - Script for building UMF on Alpine image
+
+set -e
+
+UMF_BUILD_TYPE=$1
+WORKDIR=$2
+
+sudo chown $USER $WORKDIR
+cd unified-memory-framework
+
+cmake -B build -DCMAKE_BUILD_TYPE=$UMF_BUILD_TYPE -DUMF_BUILD_TESTS=ON -DUMF_BUILD_EXAMPLES=ON
+cmake --build build

.github/workflows/nightly.yml

@@ -513,3 +513,28 @@ jobs:
 
   SYCL:
     uses: ./.github/workflows/reusable_sycl.yml
+
+  alpine:
+    name: Alpine
+    env:
+      HOST_WORKDIR: ${{github.workspace}}
+      WORKDIR: /unified-memory-framework
+    strategy:
+      matrix:
+          build_type: [Debug, Release]
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      with:
+        fetch-depth: 0
+
+    - name: Build Alpine image
+      run: |
+        docker build . -f .github/docker/alpine-3.21.Dockerfile -t umf-alpine-3.21
+
+    - name: Run UMF build on Alpine image
+      run: |
+        docker run --rm -i -v $HOST_WORKDIR:$WORKDIR \
+        umf-alpine-3.21 $WORKDIR/.github/scripts/alpine_build.sh ${{matrix.build_type}} $WORKDIR

src/utils/utils_log.c

@@ -10,7 +10,6 @@
 #ifdef _WIN32
 #include <windows.h>
 #else
-#define _GNU_SOURCE 1
 #include <sys/syscall.h>
 #include <sys/types.h>
 #include <unistd.h>
@@ -141,28 +140,29 @@ static void utils_log_internal(utils_log_level_t level, int perror,
                 *err = '\0';
                 postfix = "[strerror_s failed]";
             }
-#elif defined(__APPLE__)
-            char err[1024]; // max size according to manpage.
+#else
             int saveno = errno;
             errno = 0;
-            if (strerror_r(saveno, err, sizeof(err))) {
-                /* should never happen */
+
+#if defined(__APPLE__) ||                                                      \
+    ((_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE)
+            char err[1024];
+            int ret = strerror_r(saveno, err, sizeof(err));
+            if (ret) {
                 *err = '\0';
                 postfix = "[strerror_r failed]";
             }
-
             if (errno == ERANGE) {
                 postfix = "[truncated...]";
             }
-            errno = saveno;
 #else
-            char err_buff[1024]; // max size according to manpage.
-            int saveno = errno;
-            errno = 0;
+            char err_buff[1024];
             const char *err = strerror_r(saveno, err_buff, sizeof(err_buff));
             if (errno == ERANGE) {
                 postfix = "[truncated...]";
             }
+#endif
+
             errno = saveno;
 #endif
             strncpy(b_pos, err, b_size);