opencv: suppress warnings about non-existent include dirs

Looks like opencv4 ships with a broken .pc file.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1427>

diff --git a/ext/opencv/meson.build b/ext/opencv/meson.build
index 8434628..9ee3065 100644 (file)
--- a/ext/opencv/meson.build
+++ b/ext/opencv/meson.build
@@ -103,6 +103,10 @@ if opencv_found
 endif
 
 if opencv_found
+  # opencv4 seems to ship with .pc file that references non-existent include dir
+  # (/usr/include/opencv4/opencv instead of /usr/include/opencv4/opencv2)
+  gstopencv_cargs += cxx.get_supported_arguments(['-Wno-missing-include-dirs'])
+
   gstopencv = library('gstopencv',
     gstopencv_sources,
     cpp_args : gst_plugins_bad_args + gstopencv_cargs + [ '-DGST_USE_UNSTABLE_API' ],