From fff97cda3bace16af52335a4856ea7acd95d70b7 Mon Sep 17 00:00:00 2001
From: amzn-sj <srikkant@amazon.com>
Date: Wed, 14 Apr 2021 13:09:21 -0700
Subject: [PATCH] Cache runtime dependencies for targets to speed up iOS
 configuration.

---
 cmake/Platform/iOS/RuntimeDependencies_ios.cmake | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/cmake/Platform/iOS/RuntimeDependencies_ios.cmake b/cmake/Platform/iOS/RuntimeDependencies_ios.cmake
index 37c1d6d976..d558c6f12a 100644
--- a/cmake/Platform/iOS/RuntimeDependencies_ios.cmake
+++ b/cmake/Platform/iOS/RuntimeDependencies_ios.cmake
@@ -28,6 +28,17 @@ function(ios_get_dependencies_recursive ios_DEPENDENCIES ly_TARGET)
         return() # Nothing to do
     endif()
 
+    # See if we already have dependencies cached.
+    get_property(are_dependencies_cached GLOBAL PROPERTY LY_RUNTIME_DEPENDENCIES_${ly_TARGET} SET)
+    if(are_dependencies_cached)
+
+        # We already walked through this target
+        get_property(cached_dependencies GLOBAL PROPERTY LY_RUNTIME_DEPENDENCIES_${ly_TARGET})
+        set(${ios_DEPENDENCIES} ${cached_dependencies} PARENT_SCOPE)
+        return()
+
+    endif()
+
     # Collect all direct dependencies.
     unset(direct_dependencies)
     unset(dependencies)
@@ -102,6 +113,7 @@ function(ios_get_dependencies_recursive ios_DEPENDENCIES ly_TARGET)
 
     # Remove duplicate dependencies and return.
     list(REMOVE_DUPLICATES all_dependencies)
+    set_property(GLOBAL PROPERTY LY_RUNTIME_DEPENDENCIES_${ly_TARGET} "${all_dependencies}")
     set(${ios_DEPENDENCIES} ${all_dependencies} PARENT_SCOPE)
 
 endfunction()