On 10/29/2016 11:22 AM, Michael Niedermayer wrote:
On Sat, Oct 29, 2016 at 06:35:19PM +1100, Matt Oliver wrote:
 configure              |    5 +----
 libavformat/avisynth.c |   14 +++++---------
 2 files changed, 6 insertions(+), 13 deletions(-)
b1568f39504e5e14c924d27c8f11ba8f5816d68c  
0003-avformat-avisynth.c-Use-new-safe-dlopen-code.patch
From 633212cf1246b3fde61dd6515229e6a893005664 Mon Sep 17 00:00:00 2001
From: Matt Oliver <protogo...@gmail.com>
Date: Sat, 29 Oct 2016 18:25:25 +1100
Subject: [PATCH 3/4] avformat/avisynth.c: Use new safe dlopen code.

breaks --enable-avisynth on linux/ubuntu

--- config.h    2016-10-29 17:17:55.214014842 +0200
+++ delth/config.h      2016-10-29 17:15:41.906012034 +0200
@@ -1155,7 +1155,7 @@
 #define CONFIG_AST_DEMUXER 1
 #define CONFIG_AU_DEMUXER 1
 #define CONFIG_AVI_DEMUXER 1
-#define CONFIG_AVISYNTH_DEMUXER 1
+#define CONFIG_AVISYNTH_DEMUXER 0
 #define CONFIG_AVR_DEMUXER 1
 #define CONFIG_AVS_DEMUXER 1
 #define CONFIG_BETHSOFTVID_DEMUXER 1

[...]


Yeah, libdl needs to be linked to on non-Windows, and the
check for it got removed with the rest of the 'enabled avisynth'
case in configure. Just putting dlopen under avisynth_demuxer_deps doesn't seem to be sufficient for that to work.
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