Cache result of resource and framework paths

CHANGELOG.md

@@ -12,6 +12,10 @@ To install release candidates run `[sudo] gem install cocoapods --pre`
 
 ##### Bug Fixes
 
+* Cache result of resource and framework paths  
+  [Dimitris Koutsogiorgas](https://github.com/dnkoutso)
+  [#6893](https://github.com/CocoaPods/CocoaPods/pull/6893)
+
 * Ensure source urls are set when spec has subspecs with dependencies  
   [Dimitris Koutsogiorgas](https://github.com/dnkoutso)
   [#6888](https://github.com/CocoaPods/CocoaPods/pull/6888)

lib/cocoapods/target/aggregate_target.rb

@@ -188,26 +188,30 @@ module Pod
     #         input and output paths grouped by config
     #
     def framework_paths_by_config
-      framework_paths_by_config = {}
-      user_build_configurations.keys.each do |config|
-        relevant_pod_targets = pod_targets.select do |pod_target|
-          pod_target.include_in_build_config?(target_definition, config)
+      @framework_paths_by_config ||= begin
+        framework_paths_by_config = {}
+        user_build_configurations.keys.each do |config|
+          relevant_pod_targets = pod_targets.select do |pod_target|
+            pod_target.include_in_build_config?(target_definition, config)
+          end
+          framework_paths_by_config[config] = relevant_pod_targets.flat_map(&:framework_paths)
         end
-        framework_paths_by_config[config] = relevant_pod_targets.flat_map(&:framework_paths)
+        framework_paths_by_config
       end
-      framework_paths_by_config
     end
 
     # @return [Hash{String => Array<String>}] Uniqued Resources grouped by config
     #
     def resource_paths_by_config
-      relevant_pod_targets = pod_targets.reject do |pod_target|
-        pod_target.should_build? && pod_target.requires_frameworks?
-      end
-      user_build_configurations.keys.each_with_object({}) do |config, resources_by_config|
-        resources_by_config[config] = relevant_pod_targets.flat_map do |pod_target|
-          next [] unless pod_target.include_in_build_config?(target_definition, config)
-          (pod_target.resource_paths + [bridge_support_file].compact).uniq
+      @resource_paths_by_config ||= begin
+        relevant_pod_targets = pod_targets.reject do |pod_target|
+          pod_target.should_build? && pod_target.requires_frameworks?
+        end
+        user_build_configurations.keys.each_with_object({}) do |config, resources_by_config|
+          resources_by_config[config] = relevant_pod_targets.flat_map do |pod_target|
+            next [] unless pod_target.include_in_build_config?(target_definition, config)
+            (pod_target.resource_paths + [bridge_support_file].compact).uniq
+          end
         end
       end
     end