Add OpenImageIO as runtime dependency in AtomLyIntegration. (#4987)

* Add OpenImageIO as runtime dependency in AtomLyIntegration.

Signed-off-by: rbarrand <rbarrand@amazon.com>

* Place 3rdparty import inside if block.

Signed-off-by: rbarrand <rbarrand@amazon.com>

* Add platform cmake files for other platforms to prevent compile errors.

Signed-off-by: rbarrand <rbarrand@amazon.com>

Co-authored-by: rbarrand <rbarrand@amazon.com>

Gems/Atom/Feature/Common/Code/Source/Platform/Windows/platform_windows.cmake

@@ -5,12 +5,3 @@
 # SPDX-License-Identifier: Apache-2.0 OR MIT
 #
 #
-
-if(LY_MONOLITHIC_GAME) # Do not use OpenImageIO in monolithic game
-    return()
-endif()
-
-set(LY_BUILD_DEPENDENCIES
-    PRIVATE
-        3rdParty::ilmbase
-)

Gems/AtomLyIntegration/CommonFeatures/Code/CMakeLists.txt

@@ -86,6 +86,8 @@ if(PAL_TRAIT_BUILD_HOST_TOOLS)
         FILES_CMAKE
             atomlyintegration_commonfeatures_editor_files.cmake
             ${pal_source_dir}/platform_${PAL_PLATFORM_NAME_LOWERCASE}_files.cmake
+        PLATFORM_INCLUDE_FILES
+            ${pal_source_dir}/platform_${PAL_PLATFORM_NAME_LOWERCASE}.cmake
         INCLUDE_DIRECTORIES
             PRIVATE
                 .

Gems/AtomLyIntegration/CommonFeatures/Code/Source/Platform/Android/platform_android.cmake

@@ -0,0 +1,7 @@
+#
+# Copyright (c) Contributors to the Open 3D Engine Project.
+# For complete copyright and license terms please see the LICENSE at the root of this distribution.
+#
+# SPDX-License-Identifier: Apache-2.0 OR MIT
+#
+#

Gems/AtomLyIntegration/CommonFeatures/Code/Source/Platform/AppleTV/platform_appletv.cmake

@@ -0,0 +1,8 @@
+#
+# Copyright (c) Contributors to the Open 3D Engine Project.
+# For complete copyright and license terms please see the LICENSE at the root of this distribution.
+#
+# SPDX-License-Identifier: Apache-2.0 OR MIT
+#
+#
+

Gems/AtomLyIntegration/CommonFeatures/Code/Source/Platform/Linux/platform_linux.cmake

@@ -0,0 +1,7 @@
+#
+# Copyright (c) Contributors to the Open 3D Engine Project.
+# For complete copyright and license terms please see the LICENSE at the root of this distribution.
+#
+# SPDX-License-Identifier: Apache-2.0 OR MIT
+#
+#

Gems/AtomLyIntegration/CommonFeatures/Code/Source/Platform/Mac/platform_mac.cmake

@@ -0,0 +1,7 @@
+#
+# Copyright (c) Contributors to the Open 3D Engine Project.
+# For complete copyright and license terms please see the LICENSE at the root of this distribution.
+#
+# SPDX-License-Identifier: Apache-2.0 OR MIT
+#
+#

Gems/AtomLyIntegration/CommonFeatures/Code/Source/Platform/Windows/platform_windows.cmake

@@ -0,0 +1,13 @@
+#
+# Copyright (c) Contributors to the Open 3D Engine Project.
+# For complete copyright and license terms please see the LICENSE at the root of this distribution.
+#
+# SPDX-License-Identifier: Apache-2.0 OR MIT
+#
+#
+
+if(NOT LY_MONOLITHIC_GAME) # Do not use OpenImageIO in monolithic game
+    set(LY_RUNTIME_DEPENDENCIES
+        3rdParty::OpenImageIO
+    )
+endif()

Gems/AtomLyIntegration/CommonFeatures/Code/Source/Platform/iOS/platform_ios.cmake

@@ -0,0 +1,7 @@
+#
+# Copyright (c) Contributors to the Open 3D Engine Project.
+# For complete copyright and license terms please see the LICENSE at the root of this distribution.
+#
+# SPDX-License-Identifier: Apache-2.0 OR MIT
+#
+#