cups: clean up autotools use

Instead of hand-rolling a do_configure() simply use autotools and disable
autoheader (upstream uses a hand-generated config.h.in).

Also do_compile() doesn't need to pass SSLLIBS as configure uses pkgconfig to
find gnutls, LIBPNG and LIBJPEG are not used anywhere in the build system, and
LIBZ is detected correctly.

(From OE-Core rev: 9c25af5483280c5c753f981504eb373d6e58c7f3)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/cups/cups.inc

@@ -43,13 +43,7 @@ EXTRA_OECONF = " \
                --without-java \
                "
 
-
-do_configure() {
-	gnu-configize
-	libtoolize --force
-	autoconf --force
-	DSOFLAGS="${LDFLAGS}" SERVERBIN="${libdir}/cups" oe_runconf
-}
+EXTRA_AUTORECONF += "--exclude=autoheader"
 
 do_compile () {
 	sed -i s:STRIP:NOSTRIP: Makedefs
@@ -63,11 +57,7 @@ do_compile () {
 	echo "install-headers:" >> man/Makefile
 	echo "install-libs:" >> man/Makefile
 
-	oe_runmake "SSLLIBS=-lgnutls -L${STAGING_LIBDIR}" \
-		   "LIBPNG=-lpng -lm -L${STAGING_LIBDIR}" \
-		   "LIBJPEG=-ljpeg -L${STAGING_LIBDIR}" \
-		   "LIBZ=-lz -L${STAGING_LIBDIR}" \
-		   "-I."
+	oe_runmake
 }
 
 do_install () {