staging: usbip: userspace: modify project gcc flags

Add -Werror, remove -Wstrict-prototypes, and change -W to -Wextra.
Signed-off-by: matt mooney <mfm@muteddisk.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/usbip/userspace/configure.ac

@@ -18,7 +18,7 @@ LT_INIT
 # Silent build for automake >= 1.11
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 
-AC_SUBST([EXTRA_CFLAGS], ["-Wall -W -Wstrict-prototypes -std=gnu99"])
+AC_SUBST([EXTRA_CFLAGS], ["-Wall -Werror -Wextra -std=gnu99"])
 
 # Checks for programs.
 AC_PROG_CC