Index: gyp/pylib/gyp/xcode_emulation.py
===================================================================
--- gyp/pylib/gyp/xcode_emulation.py
+++ gyp/pylib/gyp/xcode_emulation.py
@@ -483,9 +483,6 @@
     if self._Test('GCC_CHAR_IS_UNSIGNED_CHAR', 'YES', default='NO'):
       cflags.append('-funsigned-char')
 
-    if self._Test('GCC_CW_ASM_SYNTAX', 'YES', default='YES'):
-      cflags.append('-fasm-blocks')
-
     if 'GCC_DYNAMIC_NO_PIC' in self._Settings():
       if self._Settings()['GCC_DYNAMIC_NO_PIC'] == 'YES':
         cflags.append('-mdynamic-no-pic')
@@ -495,9 +492,6 @@
       # mdynamic-no-pic by default for executable and possibly static lib
       # according to mento
 
-    if self._Test('GCC_ENABLE_PASCAL_STRINGS', 'YES', default='YES'):
-      cflags.append('-mpascal-strings')
-
     self._Appendf(cflags, 'GCC_OPTIMIZATION_LEVEL', '-O%s', default='s')
 
     if self._Test('GCC_GENERATE_DEBUGGING_SYMBOLS', 'YES', default='YES'):
@@ -519,12 +513,6 @@
     if self._Test('GCC_SYMBOLS_PRIVATE_EXTERN', 'YES', default='NO'):
       cflags.append('-fvisibility=hidden')
 
-    if self._Test('GCC_TREAT_WARNINGS_AS_ERRORS', 'YES', default='NO'):
-      cflags.append('-Werror')
-
-    if self._Test('GCC_WARN_ABOUT_MISSING_NEWLINE', 'YES', default='NO'):
-      cflags.append('-Wnewline-eof')
-
     # In Xcode, this is only activated when GCC_COMPILER_VERSION is clang or
     # llvm-gcc. It also requires a fairly recent libtool, and
     # if the system clang isn't used, DYLD_LIBRARY_PATH needs to contain the
@@ -553,7 +541,6 @@
       # TODO: Supporting fat binaries will be annoying.
       self._WarnUnimplemented('ARCHS')
       archs = ['i386']
-    cflags.append('-arch ' + archs[0])
 
     if archs[0] in ('i386', 'x86_64'):
       if self._Test('GCC_ENABLE_SSE3_EXTENSIONS', 'YES', default='NO'):
@@ -811,7 +798,6 @@
       # TODO: Supporting fat binaries will be annoying.
       self._WarnUnimplemented('ARCHS')
       archs = ['i386']
-    ldflags.append('-arch ' + archs[0])
 
     # Xcode adds the product directory by default.
     ldflags.append('-L' + product_dir)