--- /dev/null
+++ Libc/Libc-1272.200.26/xcodescripts/libc.xcconfig
@@ -0,0 +1,152 @@
+#include "<DEVELOPER_DIR>/Makefiles/CoreOS/Xcode/BSD.xcconfig"
+
+// Standard settings
+SUPPORTED_PLATFORMS = macosx iphoneos iphonesimulator appletvos appletvsimulator watchos watchsimulator iphoneosnano iphonesimulatornano bridgeos
+SRCROOT_SEARCH_PATHS = $(SRCROOT) $(SRCROOT)/include $(SRCROOT)/gen $(SRCROOT)/locale $(SRCROOT)/locale/FreeBSD $(SRCROOT)/stdtime/FreeBSD $(SRCROOT)/darwin
+SYSTEM_FRAMEWORK_HEADERS = $(SDKROOT)/System/Library/Frameworks/System.framework/PrivateHeaders
+HEADER_SEARCH_PATHS = $($(TARGET_NAME)_SEARCH_PATHS) $(DERIVED_FILES_DIR)/dtrace $(SRCROOT_SEARCH_PATHS) $(SYSTEM_FRAMEWORK_HEADERS) $(SDKROOT)/usr/local/include $(inherited)
+ALWAYS_SEARCH_USER_PATHS = YES
+USE_HEADERMAP = NO
+BUILD_VARIANTS = normal
+GCC_OPTIMIZATION_LEVEL = s
+GCC_C_LANGUAGE_STANDARD = gnu99
+GCC_ENABLE_OBJC_EXCEPTIONS = YES
+GCC_SYMBOLS_PRIVATE_EXTERN = NO
+GCC_DYNAMIC_NO_PIC = NO
+GCC_THUMB_SUPPORT = YES
+GCC_TREAT_IMPLICIT_FUNCTION_DECLARATIONS_AS_ERRORS = YES;
+
+//CLANG_WARN_INT_CONVERSION = YES
+//CLANG_WARN_SUSPICIOUS_IMPLICIT_CONVERSION = YES
+//GCC_WARN_64_TO_32_BIT_CONVERSION = YES
+//GCC_WARN_SHADOW = YES
+GCC_WARN_UNINITIALIZED_AUTOS = YES;
+GCC_WARN_UNUSED_VARIABLE = YES;
+GCC_WARN_ABOUT_RETURN_TYPE = YES;
+//WARNING_CFLAGS = -Wall -Wextra
+WARNING_CFLAGS = -Wall -Werror -Wno-error=shorten-64-to-32 -Wno-error=incompatible-pointer-types-discards-qualifiers -Wno-nullability-completeness
+
+COPY_PHASE_STRIP = NO
+SKIP_INSTALL = YES
+INSTALLHDRS_SCRIPT_PHASE = YES
+INSTALLHDRS_COPY_PHASE = YES
+VERSIONING_SYSTEM =
+VERSION_INFO_PREFIX = __attribute__((visibility("hidden")))
+COPY_PHASE_STRIP = NO
+STRIP_INSTALLED_PRODUCT = NO
+LD_DYLIB_INSTALL_NAME = /usr/lib/system/$(EXECUTABLE_NAME)
+IS_ZIPPERED = YES
+
+BUILD_VARIANTS = normal debug
+BUILD_ARCHIVES = Platform Base FreeBSD NetBSD TRE vCancelable vDarwinExtsn vDarwinExtsnCancelable vPre1050 vLegacy vInode32 FortifySource
+
+// clang is desired over llvm-gcc for OSAtomics. However, it isn't capable of building armv6 correctly.
+GCC_VERSION = com.apple.compilers.llvm.clang.1_0
+GCC_VERSION[arch=armv6] = com.apple.compilers.llvmgcc42
+
+EXECUTABLE_PREFIX = libsystem_
+INSTALL_PATH = /usr/lib/system
+PUBLIC_HEADERS_FOLDER_PATH = /usr/include
+PRIVATE_HEADERS_FOLDER_PATH = /usr/local/include
+
+DARWIN_PUBLIC_HEADERS_FOLDER_PATH = /usr/include/os
+DARWIN_PRIVATE_HEADERS_FOLDER_PATH = /usr/local/include/os
+
+// Simulator
+BASE_PREPROCESSOR_MACROS = __LIBC__ __DARWIN_UNIX03=1 __DARWIN_64_BIT_INO_T=1 __DARWIN_NON_CANCELABLE=1 __DARWIN_VERS_1050=1 _FORTIFY_SOURCE=0
+OTHER_CFLAGS = -fdollars-in-identifiers -fno-common -fverbose-asm $($(TARGET_NAME)_CFLAGS) $(VARIANT_PREPROCESSOR_MACROS)
+OTHER_CFLAGS_debug = -fstack-protector -fno-inline -O0 -DDEBUG=1
+SIM_SUFFIX[sdk=*simulator*] = _sim
+
+GCC_PREPROCESSOR_DEFINITIONS = $(BASE_PREPROCESSOR_MACROS)
+
+// libsystem_c.dylib linking
+CR_LDFLAGS = -lCrashReporterClient
+LIBCOMPILER_RT_LDFLAGS = -lcompiler_rt
+LIBMALLOC_LDFLAGS = -lsystem_malloc
+LIBC_LDFLAGS = -lsystem_c
+LIBDISPATCH_LDFLAGS = -ldispatch
+LIBXPC_LDFLAGS = -lxpc
+LIBPLATFORM_LDFLAGS = -lsystem$(SIM_SUFFIX)_platform
+LIBPTHREAD_LDFLAGS = -lsystem$(SIM_SUFFIX)_pthread
+LIBSYSCALL_LDFLAGS = -lsystem$(SIM_SUFFIX)_kernel
+LIBM_LDFLAGS = -lsystem_m
+LIBDYLD_LDFLAGS = -ldyld
+LIBSYSTEM_C_LDFLAGS = -all_load -nostdlib -L/usr/lib/system -umbrella System $(CR_LDFLAGS) $(LIBCOMPILER_RT_LDFLAGS) $(LIBDYLD_LDFLAGS) $(LIBSYSCALL_LDFLAGS) $(LIBM_LDFLAGS) $(LIBMALLOC_LDFLAGS) $(LIBPLATFORM_LDFLAGS) $(LIBPTHREAD_LDFLAGS) $(UPWARD_LDFLAGS) $(LIBSYSTEM_C_EXTRA_LDFLAGS_$(CURRENT_ARCH)) -Wl,-interposable_list,$(DERIVED_FILES_DIR)/interposable.list -Wl,-unexported_symbols_list,$(DERIVED_FILES_DIR)/unexport.list -Wl,-alias_list,$(SRCROOT)/xcodescripts/alias.list -Wl,-order_file,$(SRCROOT)/xcodescripts/Libc.order -Wl,-sectalign,__DATA,__data,1000 @$(BUILT_PRODUCTS_DIR)/$(CURRENT_VARIANT).linklist
+LIBSYSTEM_C_EXTRA_LDFLAGS_i386 = -Wl,-alias_list,$(SRCROOT)/xcodescripts/legacy_alias.list
+
+// TODO: Remove upward links - mostly <rdar://problem/13183469>, macho is for assumes.c
+UPWARD_LDFLAGS = -Wl,-upward-ldispatch -Wl,-upward-lmacho -Wl,-upward-lsystem_asl -Wl,-upward-lsystem_blocks -Wl,-upward-lsystem_info -Wl,-upward-lsystem_notify -Wl,-upward-lxpc -Wl,-upward-lcorecrypto -Wl,-upward-lsystem_trace
+
+LIBSYSTEM_DARWIN_LDFLAGS = -all_load -nostdlib -L/usr/lib/system -umbrella System $(LIBCOMPILER_RT_LDFLAGS) $(LIBDYLD_LDFLAGS) $(LIBSYSCALL_LDFLAGS) $(LIBM_LDFLAGS) $(LIBMALLOC_LDFLAGS) $(LIBPLATFORM_LDFLAGS) $(LIBPTHREAD_LDFLAGS) $(LIBPLATFORM_LDFLAGS) $(LIBC_LDFLAGS) $(LIBDISPATCH_LDFLAGS) $(LIBXPC_LDFLAGS)
+
+// libPlatform.a architectures
+ARCH_FAMILY = $(ARCH_FAMILY_$(CURRENT_ARCH))
+ARCH_FAMILY_x86_64 = x86_64
+ARCH_FAMILY_i386 = i386
+ARCH_FAMILY_armv6 = arm
+ARCH_FAMILY_armv7 = arm
+ARCH_FAMILY_armv7s = arm
+ARCH_FAMILY_armv7f = arm
+ARCH_FAMILY_armv7k = arm
+ARCH_FAMILY_arm64 = arm64
+
+// Platform target
+Platform_INCLUDED_SOURCE_FILE_NAMES = forceLibcToBuild.c $(Platform_INCLUDED_SOURCE_FILE_NAMES_gen)
+Platform_INCLUDED_SOURCE_FILE_NAMES_gen = $(ARCH_FAMILY)/gen/*.c $(ARCH_FAMILY)/gen/*.s $(ARCH_FAMILY)/gen/*.S
+
+// FreeBSD target
+FreeBSD_CFLAGS = -include $(SRCROOT)/fbsdcompat/_fbsd_compat_.h
+FreeBSD_SEARCH_PATHS = $(SRCROOT)/fbsdcompat $(SRCROOT)/gdtoa $(SRCROOT)/gdtoa/FreeBSD
+FreeBSD_EXCLUDED_SOURCE_GDTOA = gdtoa/FreeBSD/machdep* gdtoa-strtopx.c
+// Include the correct parts of gdtoa per-arch
+FreeBSD_INCLUDED_SOURCE_FILE_NAMES = $(FreeBSD_INCLUDED_SOURCE_FILE_NAMES_$(ARCH_FAMILY))
+FreeBSD_INCLUDED_SOURCE_FILE_NAMES_x86_64 = gdtoa-strtopx.c machdep_ldisx.c
+FreeBSD_INCLUDED_SOURCE_FILE_NAMES_i386 = $(FreeBSD_INCLUDED_SOURCE_FILE_NAMES_x86_64)
+FreeBSD_INCLUDED_SOURCE_FILE_NAMES_arm = machdep_ldisd.c
+FreeBSD_INCLUDED_SOURCE_FILE_NAMES_arm64 = $(FreeBSD_INCLUDED_SOURCE_FILE_NAMES_arm)
+
+// NetBSD target
+NetBSD_CFLAGS = -include $(SRCROOT)/nbsdcompat/_nbsd_compat_.h
+NetBSD_SEARCH_PATHS = $(SRCROOT)/nbsdcompat
+
+// TRE target
+TRE_CFLAGS = -DHAVE_CONFIG_H
+TRE_SEARCH_PATHS = $(SRCROOT)/regex/TRE $(SRCROOT)/regex/FreeBSD
+
+// Files per architecture to exclude from the non-platform builds (because optimised versions exist in Platform)
+BASE_INCLUDED_SOURCE_FILE_NAMES = $(BASE_INCLUDED_SOURCE_FILE_NAMES_$(ARCH_FAMILY))
+BASE_EXCLUDED_SOURCE_FILE_NAMES = $(BASE_EXCLUDED_SOURCE_FILE_NAMES_$(ARCH_FAMILY)) $(BASE_EXCLUDED_SOURCE_FILE_NAMES_$(VARIANT_PLATFORM_NAME))
+BASE_EXCLUDED_SOURCE_FILE_NAMES_x86_64 = kvm.c nlist.c
+BASE_EXCLUDED_SOURCE_FILE_NAMES_arm64 = kvm.c nlist.c
+
+// Rune support isn't included on iOS but there's no better way to exclude their complication
+BASE_EXCLUDED_SOURCE_FILE_NAMES_macosx = OSMemoryNotification.c
+BASE_EXCLUDED_SOURCE_FILE_NAMES_iphoneos = frune.c login.c logout.c mbrune.c runedepreciated.c setinvalidrune.c getmntinfo64.c
+BASE_EXCLUDED_SOURCE_FILE_NAMES_iphonesimulator = $(BASE_EXCLUDED_SOURCE_FILE_NAMES_iphoneos)
+BASE_EXCLUDED_SOURCE_FILE_NAMES_appletvos = $(BASE_EXCLUDED_SOURCE_FILE_NAMES_iphoneos)
+BASE_EXCLUDED_SOURCE_FILE_NAMES_appletvsimulator = $(BASE_EXCLUDED_SOURCE_FILE_NAMES_iphonesimulator)
+BASE_EXCLUDED_SOURCE_FILE_NAMES_watchos = $(BASE_EXCLUDED_SOURCE_FILE_NAMES_iphoneos)
+BASE_EXCLUDED_SOURCE_FILE_NAMES_watchsimulator = $(BASE_EXCLUDED_SOURCE_FILE_NAMES_iphonesimulator)
+BASE_EXCLUDED_SOURCE_FILE_NAMES_bridgeos = $(BASE_EXCLUDED_SOURCE_FILE_NAMES_iphoneos)
+
+// TODO: Remove these legacy platform names:
+BASE_EXCLUDED_SOURCE_FILE_NAMES_iphoneosnano = $(BASE_EXCLUDED_SOURCE_FILE_NAMES_watchos)
+BASE_EXCLUDED_SOURCE_FILE_NAMES_iphonesimulatornano = $(BASE_EXCLUDED_SOURCE_FILE_NAMES_watchsimulator)
+
+// Enable installapi
+SUPPORTS_TEXT_BASED_API = YES
+TAPI_VERIFY_MODE = Pedantic
+OTHER_TAPI_FLAGS = --no-infer-include-paths -umbrella System -extra-public-header $(TAPI_PUBLIC_HEADER_PATH) -extra-private-header $(TAPI_PRIVATE_HEADER_PATH)
+TAPI_PUBLIC_HEADER_PATH = $(TAPI_PUBLIC_HEADER_PATH_$(DEPLOYMENT_LOCATION))
+TAPI_PUBLIC_HEADER_PATH_NO = $(BUILT_PRODUCTS_DIR)$(PUBLIC_HEADERS_FOLDER_PATH)
+TAPI_PUBLIC_HEADER_PATH_YES = $(DSTROOT)$(PUBLIC_HEADERS_FOLDER_PATH)
+TAPI_PRIVATE_HEADER_PATH = $(TAPI_PRIVATE_HEADER_PATH_$(DEPLOYMENT_LOCATION))
+TAPI_PRIVATE_HEADER_PATH_NO = $(BUILT_PRODUCTS_DIR)$(PRIVATE_HEADERS_FOLDER_PATH)
+TAPI_PRIVATE_HEADER_PATH_YES = $(DSTROOT)$(PRIVATE_HEADERS_FOLDER_PATH)
+TAPI_HEADER_SEARCH_PATHS =
+
+// TODO: Remove this hack once Marzipan bringup is done
+VARIANT_PLATFORM_NAME = $(VARIANT_PLATFORM_NAME_$(RC_MARZIPAN))
+VARIANT_PLATFORM_NAME_ = $(PLATFORM_NAME)
+VARIANT_PLATFORM_NAME_YES = macosx