-Fix issues when compiling with clang (where cpp is provided by gcc
-in the standalone toolchain).
-
-diff -u -r ../ruby-2.3.1/configure.in ./configure.in
---- ../ruby-2.3.1/configure.in 2016-04-24 13:44:40.000000000 -0400
-+++ ./configure.in 2016-05-18 01:10:09.523385169 -0400
-@@ -799,7 +799,7 @@
- rb_cv_warnflags="$warnflags"
- if test "$GCC:${warnflags+set}:no" = yes::no; then
- if test $gcc_major -ge 4; then
-- extra_warning=-Werror=extra-tokens
-+ extra_warning=
- else
- extra_warning=
- fi
-@@ -813,9 +813,7 @@
- -Werror=pointer-arith \
- -Werror=write-strings \
- -Werror=declaration-after-statement \
-- -Werror=shorten-64-to-32 \
- -Werror=implicit-function-declaration \
-- -Werror=division-by-zero \
- -Werror=deprecated-declarations \
- -Wno-packed-bitfield-compat \
- $extra_warning \