staging: usbip: userspace: move common cflags to configure.ac

There are a standard set of cflags that are used in each makefile so
let's set those in EXTRA_CFLAGS and enforce them for the entire project.
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])
+AC_SUBST([EXTRA_CFLAGS], ["-Wall -W -Wstrict-prototypes -std=gnu99"])
 
 # Checks for programs.
 AC_PROG_CC

drivers/staging/usbip/userspace/libsrc/Makefile.am

 libusbip_la_CPPFLAGS := -DUSBIDS_FILE='"@USBIDS_DIR@/usb.ids"'
-libusbip_la_CFLAGS   := @EXTRA_CFLAGS@ -Wall -W -Wstrict-prototypes -std=gnu99
+libusbip_la_CFLAGS   := @EXTRA_CFLAGS@
 libusbip_la_LDFLAGS  := -version-info @LIBUSBIP_VERSION@
 
 lib_LTLIBRARIES := libusbip.la

drivers/staging/usbip/userspace/src/Makefile.am

 AM_CPPFLAGS := -I$(top_srcdir)/libsrc -DUSBIDS_FILE='"@USBIDS_DIR@/usb.ids"'
-AM_CFLAGS   := @EXTRA_CFLAGS@ -Wall -W -Wstrict-prototypes -std=gnu99 @PACKAGE_CFLAGS@
+AM_CFLAGS   := @EXTRA_CFLAGS@ @PACKAGE_CFLAGS@
 LDADD       := $(top_srcdir)/libsrc/libusbip.la @PACKAGE_LIBS@
 
 sbin_PROGRAMS := usbip usbipd usbip_bind_driver