No longer need to hide unused arguments to clang now that CPPFLAGS is fixed

build/autotools/configure.ac

@@ -26,7 +26,7 @@ AC_CACHE_SAVE
 EGG_CHECK_CCWALL
 EGG_CHECK_CCPIPE
 CXX_FLAG_CHECK([CXXFLAGS], [-fcolor-diagnostics], [colordiagnostics])
-CXX_FLAG_CHECK([CXXFLAGS], [-Qunused-arguments], [unusedarguments])
+#CXX_FLAG_CHECK([CXXFLAGS], [-Qunused-arguments], [unusedarguments])
 CXX_FLAG_CHECK([CXXFLAGS], [-fstack-protector], [stackprotector])
 CXX_FLAG_CHECK([CXXFLAGS], [-fstack-protector-strong], [stackprotectorstrong])
 CXX_FLAG_CHECK([DEBCXXFLAGS], [-fstack-protector-all], [stackprotectorall])

configure

@@ -3224,63 +3224,7 @@ EOF
     exit 1
   fi
 
-
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler understands -Qunused-arguments" >&5
-$as_echo_n "checking whether the compiler understands -Qunused-arguments... " >&6; }
-if ${egg_cv_prog_cc_unusedarguments+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-    ac_ext=cpp
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-    ac_saved_flags="$CXXFLAGS"
-    CXXFLAGS="-Werror -Qunused-arguments"
-    cat build/confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end build/confdefs.h.  */
-
-int
-main ()
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_cxx_try_compile "$LINENO"; then :
-  egg_cv_prog_cc_unusedarguments="yes"
-else
-  egg_cv_prog_cc_unusedarguments="no"
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-    CXXFLAGS="$ac_saved_flags"
-    ac_ext=cpp
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $egg_cv_prog_cc_unusedarguments" >&5
-$as_echo "$egg_cv_prog_cc_unusedarguments" >&6; }
-
-  if [ "$egg_cv_prog_cc_unusedarguments" = "yes" ]; then
-    CXXFLAGS="$CXXFLAGS -Qunused-arguments"
-  elif [ -n "" ]; then
-      cat << 'EOF' >&2
-configure: error:
-
-  Your OS or C++ compiler does not support -Qunused-arguments.
-  This compile flag is required.
-
-EOF
-    exit 1
-  fi
-
+#CXX_FLAG_CHECK([CXXFLAGS], [-Qunused-arguments], [unusedarguments])
 
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler understands -fstack-protector" >&5
 $as_echo_n "checking whether the compiler understands -fstack-protector... " >&6; }