Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 40 insertions, 0 deletions

diff --git a/src/seastar/cmake/FindLinuxMembarrier.cmake b/src/seastar/cmake/FindLinuxMembarrier.cmake
new file mode 100644
index 00000000..d4645cff
--- /dev/null
+++ b/src/seastar/cmake/FindLinuxMembarrier.cmake
@@ -0,0 +1,40 @@
+#
+# This file is open source software, licensed to you under the terms
+# of the Apache License, Version 2.0 (the "License").  See the NOTICE file
+# distributed with this work for additional information regarding copyright
+# ownership.  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.
+#
+
+#
+# Copyright (C) 2018 Scylladb, Ltd.
+#
+
+find_path (LinuxMembarrier_INCLUDE_DIR
+  NAMES linux/membarrier.h)
+
+include (CheckCXXSourceCompiles)
+file (READ ${CMAKE_CURRENT_LIST_DIR}/code_tests/LinuxMembarrier_test.cc _linuxmembarrier_test_code)
+check_cxx_source_compiles ("${_linuxmembarrier_test_code}" LinuxMembarrier_FOUND)
+
+if (LinuxMembarrier_FOUND)
+  set (LinuxMembarrier_INCLUDE_DIRS ${LinuxMembarrier_INCLUDE_DIR})
+endif ()
+
+if (LinuxMembarrier_FOUND AND NOT (TARGET LinuxMembarrier::membarrier))
+  add_library (LinuxMembarrier::membarrier INTERFACE IMPORTED)
+
+  set_target_properties (LinuxMembarrier::membarrier
+    PROPERTIES
+      INTERFACE_INCLUDE_DIRECTORIES ${LinuxMembarrier_INCLUDE_DIRS})
+endif ()