feat: Fix xcconfig build issue

Author: showxu

README.md

@@ -15,7 +15,7 @@ This project is a buildable and debuggable version of latest Objective-C runtime
 
 
 ## **Requirement**
-[![Xcode 11.3](https://img.shields.io/badge/Xcode-11.3-blue?colorA=3caefc&colorB=24292e)](https://developer.apple.com/xcode/) 
+[![Xcode 12](https://img.shields.io/badge/Xcode-12-blue?colorA=3caefc&colorB=24292e)](https://developer.apple.com/xcode/) 
 [![macOS Catalina](https://img.shields.io/badge/macOS-Catalina-blue?colorA=blueviolet&colorB=24292e)](https://developer.apple.com/macos/)
 
 
@@ -92,10 +92,8 @@ In latest dyld-733.6 (dyld-421.2 later), apple use this [ruby script](https://op
 | `GCC_PREPROCESSOR_DEFINITIONS` | LIBC_NO_LIBCRASHREPORTERCLIENT, also append `$(inherited)` to target objc |
 | `ORDER_FILE` | $(SRCROOT)/libobjc.order |
 | `OTHER_LDFLAGS[sdk=macosx*]` | -lc++abi -Xlinker -sectalign -Xlinker __DATA -Xlinker __objc_data -Xlinker 0x1000 -Xlinker -interposable_list -Xlinker interposable.txt, remove build setting in target objc |
-| `OTHER_LDFLAGS[sdk=iphoneos*][arch=*]` | -lc++abi -Wl,-segalign,0x4000 -Xlinker -sectalign -Xlinker __DATA -Xlinker __objc_data -Xlinker 0x1000 -Xlinker -interposable_list -Xlinker interposable.txt -isystem -iframework, remove build setting in target objc |
+| `OTHER_LDFLAGS[sdk=iphoneos*][arch=*]` | -lc++abi -Wl,-segalign,0x4000 -Xlinker -sectalign -Xlinker __DATA -Xlinker __objc_data -Xlinker 0x1000 -Xlinker -interposable_list -Xlinker interposable.txt, remove build setting in target objc |
 | `OTHER_LDFLAGS[sdk=iphonesimulator*][arch=*]` | -lc++abi -Xlinker -interposable_list -Xlinker interposable.txt, remove build setting in target objc |
-| `OTHER_TAPI_FLAGS` | redirect $(DSTROOT)/usr/include/objc/ObjectiveC.apinotes => $(SRCROOT)/runtime/Module/ObjectiveC.apinotes |
-| `OTHER_TAPI_FLAGS` | redirect $(DSTROOT)/usr/include/objc/module.modulemap => $(SRCROOT)/runtime/Module/module.modulemap |
 
 ### Run Script
 Evidently public macosx sdk is our only choice, we need to update value of parameter `-sdk` from `macosx.internal` to `macosx` in run script of objc target. 

objc.xcconfig

@@ -17,5 +17,5 @@ ORDER_FILE = $(SRCROOT)/libobjc.order
 // resolve ld: library not found for -lCrashReporterClient clang: error: linker command failed with exit code 1 (use -v to see invocation)
 // OTHER_LDFLAGS[sdk=macosx*] = -lCrashReporterClient -lc++abi -Xlinker -sectalign -Xlinker __DATA -Xlinker __objc_data -Xlinker 0x1000 -Xlinker -interposable_list -Xlinker interposable.txt
 OTHER_LDFLAGS[sdk=macosx*] = -lc++abi -Xlinker -sectalign -Xlinker __DATA -Xlinker __objc_data -Xlinker 0x1000 -Xlinker -interposable_list -Xlinker interposable.txt
-OTHER_LDFLAGS[sdk=iphoneos*][arch=*] = -lc++abi -Wl,-segalign,0x4000 -Xlinker -sectalign -Xlinker __DATA -Xlinker __objc_data -Xlinker 0x1000 -Xlinker -interposable_list -Xlinker interposable.txt -isystem -iframework
+OTHER_LDFLAGS[sdk=iphoneos*][arch=*] = -lc++abi -Wl,-segalign,0x4000 -Xlinker -sectalign -Xlinker __DATA -Xlinker __objc_data -Xlinker 0x1000 -Xlinker -interposable_list -Xlinker interposable.txt
 OTHER_LDFLAGS[sdk=iphonesimulator*][arch=*] = -lc++abi -Xlinker -interposable_list -Xlinker interposable.txt

objc4/objc.xcodeproj/project.pbxproj

@@ -881,12 +881,12 @@
 				GCC_OPTIMIZATION_LEVEL = 0;
 				GCC_WARN_ABOUT_DEPRECATED_FUNCTIONS = NO;
 				HEADER_SEARCH_PATHS = (
-					"$(inherited)",
 					"$(DSTROOT)/usr/include/**",
 					"$(DSTROOT)/usr/local/include/**",
 					"$(CONFIGURATION_BUILD_DIR)/usr/include/**",
 					"$(CONFIGURATION_BUILD_DIR)/usr/local/include/**",
 					/System/Library/Frameworks/System.framework/PrivateHeaders,
+					"$(inherited)",
 				);
 				INSTALL_PATH = /usr/lib;
 				IS_ZIPPERED = YES;
@@ -897,8 +897,10 @@
 					"-fno-objc-convert-messages-to-runtime-calls",
 					"$(OTHER_CFLAGS)",
 				);
-				OTHER_TAPI_FLAGS = "-exclude-public-header $(SRCROOT)/runtime/Module/ObjectiveC.apinotes -exclude-public-header $(SRCROOT)/runtime/Module/module.modulemap -Xparser -Wno-deprecated-declarations -Xparser -Wno-unavailable-declarations -Xparser -D_OBJC_PRIVATE_H_=1 -DOBJC_DECLARE_SYMBOLS=1";
+				OTHER_TAPI_FLAGS = "-exclude-public-header $(DSTROOT)/usr/include/objc/ObjectiveC.apinotes -exclude-public-header $(DSTROOT)/usr/include/objc/module.modulemap -Xparser -Wno-deprecated-declarations -Xparser -Wno-unavailable-declarations -Xparser -D_OBJC_PRIVATE_H_=1 -DOBJC_DECLARE_SYMBOLS=1";
+				PRIVATE_HEADERS_FOLDER_PATH = /usr/local/include/objc;
 				PRODUCT_NAME = objc.A;
+				PUBLIC_HEADERS_FOLDER_PATH = /usr/include/objc;
 				SUPPORTS_TEXT_BASED_API = YES;
 				TAPI_VERIFY_MODE = Pedantic;
 				UNEXPORTED_SYMBOLS_FILE = unexported_symbols;
@@ -917,12 +919,12 @@
 				GCC_CW_ASM_SYNTAX = NO;
 				GCC_WARN_ABOUT_DEPRECATED_FUNCTIONS = NO;
 				HEADER_SEARCH_PATHS = (
-					"$(inherited)",
 					"$(DSTROOT)/usr/include/**",
 					"$(DSTROOT)/usr/local/include/**",
 					"$(CONFIGURATION_BUILD_DIR)/usr/include/**",
 					"$(CONFIGURATION_BUILD_DIR)/usr/local/include/**",
 					/System/Library/Frameworks/System.framework/PrivateHeaders,
+					"$(inherited)",
 				);
 				INSTALL_PATH = /usr/lib;
 				IS_ZIPPERED = YES;
@@ -932,8 +934,10 @@
 					"-fno-objc-convert-messages-to-runtime-calls",
 					"$(OTHER_CFLAGS)",
 				);
-				OTHER_TAPI_FLAGS = "-exclude-public-header $(SRCROOT)/runtime/Module/ObjectiveC.apinotes -exclude-public-header $(SRCROOT)/runtime/Module/module.modulemap -Xparser -Wno-deprecated-declarations -Xparser -Wno-unavailable-declarations -Xparser -D_OBJC_PRIVATE_H_=1 -DOBJC_DECLARE_SYMBOLS=1";
+				OTHER_TAPI_FLAGS = "-exclude-public-header $(DSTROOT)/usr/include/objc/ObjectiveC.apinotes -exclude-public-header $(DSTROOT)/usr/include/objc/module.modulemap -Xparser -Wno-deprecated-declarations -Xparser -Wno-unavailable-declarations -Xparser -D_OBJC_PRIVATE_H_=1 -DOBJC_DECLARE_SYMBOLS=1";
+				PRIVATE_HEADERS_FOLDER_PATH = /usr/local/include/objc;
 				PRODUCT_NAME = objc.A;
+				PUBLIC_HEADERS_FOLDER_PATH = /usr/include/objc;
 				SUPPORTS_TEXT_BASED_API = YES;
 				TAPI_VERIFY_MODE = Pedantic;
 				UNEXPORTED_SYMBOLS_FILE = unexported_symbols;