Fix legacy header search paths that broke due to #7116 and #7412

CHANGELOG.md

@@ -87,6 +87,9 @@ To install release candidates run `[sudo] gem install cocoapods --pre`
   instead of via the sandbox headers store.  
   [Samuel Giddins](https://github.com/segiddins)
 
+* Fix legacy header search paths that broke due to #7116 and #7412.  
+  [Dimitris Koutsogiorgas](https://github.com/dnkoutso)
+  [#7445](https://github.com/CocoaPods/CocoaPods/pull/7445)
 
 ## 1.4.0 (2018-01-18)
 

lib/cocoapods/target/pod_target.rb

@@ -602,10 +602,16 @@ module Pod
       header_search_paths = []
       header_search_paths.concat(build_headers.search_paths(platform, nil, uses_modular_headers?))
       header_search_paths.concat(sandbox.public_headers.search_paths(platform, pod_name, uses_modular_headers?))
-      dependent_targets = recursive_dependent_targets
-      dependent_targets += recursive_test_dependent_targets if include_test_dependent_targets
-      dependent_targets.each do |dependent_target|
-        header_search_paths.concat(sandbox.public_headers.search_paths(platform, dependent_target.pod_name, defines_module? && dependent_target.uses_modular_headers?(false)))
+      # Modular headers will only provide header search paths of the dependencies of the pod target. That is in
+      # contrast to legacy mode, which has always given access to all pods header search paths.
+      if uses_modular_headers?
+        dependent_targets = recursive_dependent_targets
+        dependent_targets += recursive_test_dependent_targets if include_test_dependent_targets
+        dependent_targets.each do |dependent_target|
+          header_search_paths.concat(sandbox.public_headers.search_paths(platform, dependent_target.pod_name, defines_module? && dependent_target.uses_modular_headers?(false)))
+        end
+      else
+        header_search_paths.concat(sandbox.public_headers.search_paths(platform))
       end
       header_search_paths.uniq
     end

cocoapods-integration-specs @ 21bf4969

-Subproject commit 5e83e892038cab89896eba2beb266d831a7318ea
+Subproject commit 21bf4969be6345e4761a3cca3e91e8a3b953a302

spec/unit/generator/xcconfig/pod_xcconfig_spec.rb

@@ -259,11 +259,13 @@ module Pod
             xcconfig.to_hash['LIBRARY_SEARCH_PATHS'].should == '$(inherited) "${PODS_ROOT}/../../spec/fixtures/banana-lib" "${PODS_CONFIGURATION_BUILD_DIR}/BananaLib" "${PODS_CONFIGURATION_BUILD_DIR}/CoconutLib"'
           end
 
-          it 'adds correct header search paths for dependent and test targets' do
+          it 'adds correct header search paths for dependent and test targets without modular headers' do
             @monkey_pod_target.build_headers.add_search_path('monkey', Platform.ios)
             @monkey_pod_target.sandbox.public_headers.add_search_path('monkey', Platform.ios)
             @banana_pod_target.build_headers.add_search_path('BananaLib', Platform.ios)
             @banana_pod_target.sandbox.public_headers.add_search_path('BananaLib', Platform.ios)
+            @coconut_pod_target.stubs(:uses_modular_headers?).returns(false)
+            @coconut_pod_target.stubs(:defines_module?).returns(false)
             @coconut_pod_target.build_headers.add_search_path('CoconutLib', Platform.ios)
             @coconut_pod_target.sandbox.public_headers.add_search_path('CoconutLib', Platform.ios)
             @coconut_pod_target.test_dependent_targets = [@monkey_pod_target]
@@ -276,11 +278,13 @@ module Pod
               ' "${PODS_ROOT}/Headers/Public/monkey" "${PODS_ROOT}/Headers/Public/monkey/monkey"'
           end
 
-          it 'adds correct header search paths for dependent and test targets for non test xcconfigs' do
+          it 'adds correct header search paths for dependent and test targets for non test xcconfigs without modular headers' do
             @monkey_pod_target.build_headers.add_search_path('monkey', Platform.ios)
             @monkey_pod_target.sandbox.public_headers.add_search_path('monkey', Platform.ios)
             @banana_pod_target.build_headers.add_search_path('BananaLib', Platform.ios)
             @banana_pod_target.sandbox.public_headers.add_search_path('BananaLib', Platform.ios)
+            @coconut_pod_target.stubs(:uses_modular_headers?).returns(false)
+            @coconut_pod_target.stubs(:defines_module?).returns(false)
             @coconut_pod_target.build_headers.add_search_path('CoconutLib', Platform.ios)
             @coconut_pod_target.sandbox.public_headers.add_search_path('CoconutLib', Platform.ios)
             @coconut_pod_target.test_dependent_targets = [@monkey_pod_target]
@@ -290,7 +294,45 @@ module Pod
             xcconfig = generator.generate
             xcconfig.to_hash['HEADER_SEARCH_PATHS'].should == '$(inherited) "${PODS_ROOT}/Headers/Private/CoconutLib"' \
               ' "${PODS_ROOT}/Headers/Public/BananaLib" "${PODS_ROOT}/Headers/Public/BananaLib/BananaLib"' \
-              ' "${PODS_ROOT}/Headers/Public/CoconutLib" "${PODS_ROOT}/Headers/Public/CoconutLib/CoconutLib"'
+              ' "${PODS_ROOT}/Headers/Public/CoconutLib" "${PODS_ROOT}/Headers/Public/CoconutLib/CoconutLib"' \
+              ' "${PODS_ROOT}/Headers/Public/monkey" "${PODS_ROOT}/Headers/Public/monkey/monkey"'
+          end
+
+          it 'adds correct header search paths for dependent and test targets with modular headers' do
+            @monkey_pod_target.build_headers.add_search_path('monkey', Platform.ios)
+            @monkey_pod_target.sandbox.public_headers.add_search_path('monkey', Platform.ios)
+            @banana_pod_target.build_headers.add_search_path('BananaLib', Platform.ios)
+            @banana_pod_target.sandbox.public_headers.add_search_path('BananaLib', Platform.ios)
+            @coconut_pod_target.stubs(:uses_modular_headers?).returns(true)
+            @coconut_pod_target.stubs(:defines_module?).returns(true)
+            @coconut_pod_target.build_headers.add_search_path('CoconutLib', Platform.ios)
+            @coconut_pod_target.sandbox.public_headers.add_search_path('CoconutLib', Platform.ios)
+            @coconut_pod_target.test_dependent_targets = [@monkey_pod_target]
+            @coconut_pod_target.dependent_targets = [@banana_pod_target]
+            generator = PodXCConfig.new(@coconut_pod_target, true)
+            xcconfig = generator.generate
+            xcconfig.to_hash['HEADER_SEARCH_PATHS'].should == '$(inherited) "${PODS_ROOT}/Headers/Private/CoconutLib"' \
+              ' "${PODS_ROOT}/Headers/Public/BananaLib"' \
+              ' "${PODS_ROOT}/Headers/Public/CoconutLib"' \
+              ' "${PODS_ROOT}/Headers/Public/monkey"'
+          end
+
+          it 'adds correct header search paths for dependent and test targets for non test xcconfigs with modular headers' do
+            @monkey_pod_target.build_headers.add_search_path('monkey', Platform.ios)
+            @monkey_pod_target.sandbox.public_headers.add_search_path('monkey', Platform.ios)
+            @banana_pod_target.build_headers.add_search_path('BananaLib', Platform.ios)
+            @banana_pod_target.sandbox.public_headers.add_search_path('BananaLib', Platform.ios)
+            @coconut_pod_target.stubs(:uses_modular_headers?).returns(true)
+            @coconut_pod_target.stubs(:defines_module?).returns(true)
+            @coconut_pod_target.build_headers.add_search_path('CoconutLib', Platform.ios)
+            @coconut_pod_target.sandbox.public_headers.add_search_path('CoconutLib', Platform.ios)
+            @coconut_pod_target.test_dependent_targets = [@monkey_pod_target]
+            @coconut_pod_target.dependent_targets = [@banana_pod_target]
+            generator = PodXCConfig.new(@coconut_pod_target, false)
+            xcconfig = generator.generate
+            xcconfig.to_hash['HEADER_SEARCH_PATHS'].should == '$(inherited) "${PODS_ROOT}/Headers/Private/CoconutLib"' \
+              ' "${PODS_ROOT}/Headers/Public/BananaLib"' \
+              ' "${PODS_ROOT}/Headers/Public/CoconutLib"' \
           end
 
           it 'does not include other ld flags for test dependent targets if its not a test xcconfig' do

spec/unit/target/pod_target_spec.rb

@@ -280,6 +280,31 @@ module Pod
             '${PODS_ROOT}/Headers/Public/BananaLib/BananaLib',
           ]
         end
+
+        # This is a legacy header search paths test support that adds header search paths for all dependencies
+        # even the ones that are not part of the podspec. It is how CocoaPods always worked until support for modular
+        # header search paths support was added in > 1.4.0
+        it 'includes header search paths for all dependent targets' do
+          @pod_target.build_headers.add_search_path('BananaLib', Platform.ios)
+          @pod_target.sandbox.public_headers.add_search_path('BananaLib', Platform.ios)
+          @pod_target.sandbox.public_headers.add_search_path('monkey', Platform.ios)
+          @pod_target.sandbox.public_headers.add_search_path('matryoshka', Platform.ios)
+          monkey_spec = fixture_spec('monkey/monkey.podspec')
+          monkey_pod_target = PodTarget.new([monkey_spec], [@target_definition], config.sandbox)
+          monkey_pod_target.stubs(:platform).returns(Platform.ios)
+          # Notice that pod target does not depend on `matryoshka` but it will still include its header search paths
+          @pod_target.stubs(:dependent_targets).returns([monkey_pod_target])
+          header_search_paths = @pod_target.header_search_paths
+          header_search_paths.sort.should == [
+            '${PODS_ROOT}/Headers/Private/BananaLib',
+            '${PODS_ROOT}/Headers/Public/BananaLib',
+            '${PODS_ROOT}/Headers/Public/BananaLib/BananaLib',
+            '${PODS_ROOT}/Headers/Public/matryoshka',
+            '${PODS_ROOT}/Headers/Public/matryoshka/matryoshka',
+            '${PODS_ROOT}/Headers/Public/monkey',
+            '${PODS_ROOT}/Headers/Public/monkey/monkey',
+          ]
+        end
       end
 
       describe 'modular header search paths' do