Release based on cl/313536507.

Signed-off-by: Alexey Polyudov <apolyudov@google.com>
Change-Id: I83ec7dee1a7ef6f4bdfd47482c94d03910525b7e

cpp/platform/impl/shared/CMakeLists.txt

@@ -0,0 +1,81 @@
+# Copyright 2020 Google LLC
+#
+# 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
+#
+#     https://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.
+
+add_library(platform_impl_shared_posix_lock STATIC)
+
+target_sources(platform_impl_shared_posix_lock
+  PRIVATE
+    "posix_lock.cc"
+  PUBLIC
+    "posix_lock.h"
+)
+
+target_include_directories(platform_impl_shared_posix_lock
+  PUBLIC
+    ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+
+target_link_libraries(platform_impl_shared_posix_lock
+  PUBLIC
+    platform_api
+    platform_types
+)
+
+add_library(platform_impl_shared_posix_condition_variable STATIC)
+
+target_sources(platform_impl_shared_posix_condition_variable
+  PRIVATE
+    "posix_condition_variable.cc"
+  PUBLIC
+    "posix_condition_variable.h"
+)
+
+target_include_directories(platform_impl_shared_posix_condition_variable
+  PUBLIC
+    ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+target_link_libraries(platform_impl_shared_posix_condition_variable
+  PUBLIC
+    platform_api
+    platform_impl_shared_posix_lock
+    platform_types
+    absl::raw_logging_internal
+)
+
+add_library(platform_impl_shared_atomic_boolean STATIC)
+
+target_sources(platform_impl_shared_atomic_boolean
+  PUBLIC
+    "atomic_boolean_impl.h"
+)
+
+target_include_directories(platform_impl_shared_atomic_boolean
+  PUBLIC
+    ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+target_link_libraries(platform_impl_shared_atomic_boolean
+  PUBLIC
+    platform_api
+    platform_types
+)
+
+set_target_properties(platform_impl_shared_atomic_boolean
+  PROPERTIES
+    LINKER_LANGUAGE CXX
+)
+
+add_subdirectory(sample)