From 469b1a0858ac8bf4827d93f2473cc41067a2282c Mon Sep 17 00:00:00 2001
From: amzn-sj <srikkant@amazon.com>
Date: Fri, 11 Jun 2021 16:30:46 -0700
Subject: [PATCH] Fix monolithic link error involving gem variants which are
 "aliased" as interface libraries with multiple gem target dependencies

---
 Code/LauncherUnified/launcher_generator.cmake | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Code/LauncherUnified/launcher_generator.cmake b/Code/LauncherUnified/launcher_generator.cmake
index 36cd3c5899..15bbc0fe89 100644
--- a/Code/LauncherUnified/launcher_generator.cmake
+++ b/Code/LauncherUnified/launcher_generator.cmake
@@ -196,6 +196,16 @@ function(ly_delayed_generate_static_modules_inl)
             ly_get_gem_load_dependencies(all_game_gem_dependencies ${project_name}.GameLauncher)
 
             foreach(game_gem_dependency ${all_game_gem_dependencies})
+                # Sometimes, a gem's Client variant may be an interface library
+                # which dependes on multiple gem targets. The interface libraries
+                # should be skipped; the real dependencies of the interface will be processed
+                if(TARGET ${game_gem_dependency})
+                    get_target_property(target_type ${game_gem_dependency} TYPE)
+                    if(${target_type} STREQUAL "INTERFACE_LIBRARY")
+                        continue()
+                    endif()
+                endif()
+
                 # To match the convention on how gems targets vs gem modules are named,
                 # we remove the ".Static" from the suffix
                 # Replace "." with "_"