--- src/buildtools/configure.json.orig
+++ src/buildtools/configure.json
@@ -35,31 +35,31 @@
         "webengine-xcomposite": {
             "label": "xcomposite",
             "sources": [
-                { "type": "pkgConfig", "args": "xcomposite" }
+                { "type": "pkgConfig", "args": "xcomposite-fail-on-macports" }
             ]
         },
         "webengine-xcursor": {
             "label": "xcursor",
             "sources": [
-                { "type": "pkgConfig", "args": "xcursor" }
+                { "type": "pkgConfig", "args": "xcursor-fail-on-macports" }
             ]
         },
         "webengine-xi": {
             "label": "xi",
             "sources": [
-                { "type": "pkgConfig", "args": "xi" }
+                { "type": "pkgConfig", "args": "xi-fail-on-macports" }
             ]
         },
         "webengine-xtst": {
             "label": "xtst",
             "sources": [
-                { "type": "pkgConfig", "args": "xtst" }
+                { "type": "pkgConfig", "args": "xtst-fail-on-macports" }
             ]
         },
         "webengine-xkbfile": {
             "label": "xkbfile",
             "sources": [
-                { "type": "pkgConfig", "args": "xkbfile" }
+                { "type": "pkgConfig", "args": "xkbfile-fail-on-macports" }
             ]
         },
         "webengine-nss": {
@@ -71,13 +71,13 @@
         "webengine-x11" : {
             "label" : "x11",
             "sources": [
-                { "type": "pkgConfig", "args": "x11" }
+                { "type": "pkgConfig", "args": "x11-fail-on-macports" }
             ]
         },
         "webengine-xproto-gl": {
             "label": "xproto (glproto)",
             "sources": [
-                { "type": "pkgConfig", "args": "glproto" }
+                { "type": "pkgConfig", "args": "glproto-fail-on-macports" }
             ]
         },
         "webengine-glib": {