package/libvips: add webp optional dependency

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/libvips/libvips.mk

@@ -26,7 +26,6 @@ LIBVIPS_CONF_OPTS = \
 	--without-OpenEXR \
 	--without-openslide \
 	--without-cfitsio \
-	--without-libwebp \
 	--without-pangoft2 \
 	--without-x
 LIBVIPS_INSTALL_STAGING = YES
@@ -132,6 +131,13 @@ else
 LIBVIPS_CONF_OPTS += --without-libexif
 endif
 
+ifeq ($(BR2_PACKAGE_WEBP_DEMUX)$(BR2_PACKAGE_WEBP_MUX),yy)
+LIBVIPS_CONF_OPTS += --with-libwebp
+LIBVIPS_DEPENDENCIES += webp
+else
+LIBVIPS_CONF_OPTS += --without-libwebp
+endif
+
 ifeq ($(BR2_PACKAGE_ZLIB),y)
 LIBVIPS_CONF_OPTS += --with-zlib
 LIBVIPS_DEPENDENCIES += zlib