vim: patch for -no-cpp-precomp

Formula/vim.rb

@@ -29,6 +29,11 @@ class Vim < Formula
   depends_on :python => :recommended
   depends_on 'lua' => :optional
 
+  # vim uses the obsolete Apple-only -no-cpp-precomp flag, which
+  # FSF GCC can't understand; reported upstream:
+  # https://groups.google.com/forum/#!topic/vim_dev/X5yG3-IiUp8
+  def patches; DATA; end
+
   def install
     ENV['LUA_PREFIX'] = HOMEBREW_PREFIX if build.with?('lua')
 
@@ -81,3 +86,40 @@ class Vim < Formula
     ln_s bin+'vim', bin+'vi' if build.include? 'override-system-vi'
   end
 end
+
+__END__
+diff --git a/src/auto/configure b/src/auto/configure
+index 07f794e..5736d80 100755
+--- a/src/auto/configure
++++ b/src/auto/configure
+@@ -4221,7 +4221,7 @@ rm -f core conftest.err conftest.$ac_objext \
+     MACOSX=yes
+     OS_EXTRA_SRC="os_macosx.m os_mac_conv.c";
+     OS_EXTRA_OBJ="objects/os_macosx.o objects/os_mac_conv.o"
+-        CPPFLAGS="$CPPFLAGS -DMACOS_X_UNIX -no-cpp-precomp"
++        CPPFLAGS="$CPPFLAGS -DMACOS_X_UNIX"
+ 
+                 # On IRIX 5.3, sys/types and inttypes.h are conflicting.
+ for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \
+@@ -4298,7 +4298,7 @@ fi
+ 
+   if test "$GCC" = yes -a "$local_dir" != no; then
+     echo 'void f(){}' > conftest.c
+-        have_local_include=`${CC-cc} -no-cpp-precomp -c -v conftest.c 2>&1 | grep "${local_dir}/include"`
++        have_local_include=`${CC-cc} -c -v conftest.c 2>&1 | grep "${local_dir}/include"`
+     have_local_lib=`${CC-cc} -c -v conftest.c 2>&1 | grep "${local_dir}/lib"`
+     rm -f conftest.c conftest.o
+   fi
+diff --git a/src/osdef.sh b/src/osdef.sh
+index d7d4f2a..7015d7b 100755
+--- a/src/osdef.sh
++++ b/src/osdef.sh
+@@ -49,7 +49,6 @@ EOF
+ 
+ # Mac uses precompiled headers, but we need real headers here.
+ case `uname` in
+-    Darwin)	$CC -I. -I$srcdir -E -no-cpp-precomp osdef0.c >osdef0.cc;;
+     *)		$CC -I. -I$srcdir -E osdef0.c >osdef0.cc;;
+ esac
+ 
+