meson: Don't use libdrm_dep in cc.has_header()

It can't handle subproject dependencies. Pointed out in
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/4033#note_2665974

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7932>

diff --git a/subprojects/gst-plugins-base/ext/gl/meson.build b/subprojects/gst-plugins-base/ext/gl/meson.build
index 2715a3712940ae8dff6bfa947302c338a3d25eec..743760d837c33ebfc09a1cc413cb6dbc80d59fa9 100644 (file)
--- a/subprojects/gst-plugins-base/ext/gl/meson.build
+++ b/subprojects/gst-plugins-base/ext/gl/meson.build
@@ -114,7 +114,13 @@ if bcm_host_dep.found()
   optional_deps += bcm_host_dep
 endif
 
-if egl_dep.found() and cc.has_header('drm_fourcc.h', dependencies: libdrm_dep)
+if libdrm_dep.type_name() == 'internal'
+  drm_has_fourcc = true
+else
+  drm_has_fourcc = cc.has_header('drm_fourcc.h', dependencies: libdrm_dep)
+endif
+
+if egl_dep.found() and drm_has_fourcc
   optional_deps += [allocators_dep, libdrm_dep]
 endif