build: Stop using xmllint to validate protocol files

The scanner needs to be good enough.  If it crashes or fails to report
invalid input, that needs to get fixed.

Makefile.am

@@ -17,7 +17,7 @@ weston.ini : $(srcdir)/weston.ini.in
 		-e 's|@libexecdir[@]|$(libexecdir)|g' \
 		$< > $@
 
-all-local : weston.ini validate-protocol-xml
+all-local : weston.ini
 
 AM_CFLAGS = $(GCC_CFLAGS)
 
@@ -892,7 +892,7 @@ BUILT_SOURCES +=				\
 	tests/text-protocol.c			\
 	tests/text-client-protocol.h
 
-protocol_sources =				\
+EXTRA_DIST +=					\
 	protocol/desktop-shell.xml		\
 	protocol/screenshooter.xml		\
 	protocol/xserver.xml			\
@@ -904,20 +904,6 @@ protocol_sources =				\
 	protocol/xdg-shell.xml			\
 	protocol/scaler.xml
 
-if HAVE_XMLLINT
-.PHONY : validate-protocol-xml
-
-.%.xml.valid : $(top_srcdir)/protocol/%.xml
-	$(AM_V_GEN)$(XMLLINT) --noout --dtdvalid $(dtddir)/wayland.dtd $^ > $@
-
-validate-protocol-xml : $(protocol_sources:protocol/%.xml=.%.xml.valid)
-
-CLEANFILES += $(protocol_sources:protocol/%.xml=.%.xml.valid)
-EXTRA_DIST += $(protocol_sources)
-
-endif
-
-
 man_MANS = weston.1 weston.ini.5
 
 if ENABLE_DRM_COMPOSITOR

configure.ac

@@ -474,15 +474,6 @@ if test x$wayland_scanner = x; then
 fi
 
 PKG_CHECK_MODULES(WAYLAND_SCANNER, wayland-scanner)
-AC_PATH_PROG(XMLLINT, xmllint)
-AC_ARG_WITH([dtddir],
-	    AS_HELP_STRING([--with-dtddir],
-			   [Directory containing the Wayland
-			    protocol DTD @<:@default=from pkgconfig@:>@]),
-	    [dtddir="$withval"],
-	    [dtddir=$($PKG_CONFIG --variable=pkgdatadir wayland-scanner)])
-AC_SUBST([dtddir])
-AM_CONDITIONAL([HAVE_XMLLINT], [test "x$XMLLINT" != "x" -a "x$dtddir" != "x"])
 
 AC_CONFIG_FILES([Makefile src/version.h src/weston.pc])