remove configure check for 'volatile' (#3281)

This is a required feature is C99, which we require.

1 files changed, 0 insertions, 26 deletions

diff --git a/configure b/configure
index a6f7d2b..c242ac4 100755
--- a/configure
+++ b/configure
@@ -13544,32 +13544,6 @@ fi
 
 
 works=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for working volatile" >&5
-$as_echo_n "checking for working volatile... " >&6; }
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main ()
-{
-volatile int x; x = 0;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  works=yes
-else
-
-$as_echo "#define volatile /**/" >>confdefs.h
-
-
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $works" >&5
-$as_echo "$works" >&6; }
-
-works=no
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for working signed char" >&5
 $as_echo_n "checking for working signed char... " >&6; }
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext