playlist: disable external preparser on mobile platforms

External process preparsing is not available on Android and iOS-derived
platforms (iOS, tvOS, watchOS, visionOS) as spawning external processes
is either restricted or impractical on these platforms.

Use the internal (in-process) preparser instead.

src/playlist/playlist.c

@@ -22,6 +22,10 @@
 # include "config.h"
 #endif
 
+#ifdef __APPLE__
+# include <TargetConditionals.h>
+#endif
+
 #include "playlist.h"
 
 #include <vlc_common.h>
@@ -45,7 +49,11 @@ vlc_playlist_New(vlc_object_t *parent, enum vlc_playlist_preparsing rec,
             .types = VLC_PREPARSER_TYPE_PARSE | VLC_PREPARSER_TYPE_FETCHMETA_LOCAL,
             .max_parser_threads = preparse_max_threads,
             .timeout = preparse_timeout,
+#if defined(__ANDROID__) || (defined(__APPLE__) && TARGET_OS_IPHONE)
+            .external_process = false,
+#else
             .external_process = true,
+#endif
         };
         playlist->parser = vlc_preparser_New(parent, &cfg);
         if (playlist->parser == NULL)