1 files changed, 3 insertions, 1 deletions
diff --git a/configure b/configure
index 6fdcb7bb8d..32009a3882 100755
--- a/configure
+++ b/configure
@@ -3849,7 +3849,9 @@ for func in $MATH_FUNCS; do
 done
 
 # these are off by default, so fail if requested and not available
-enabled avisynth          && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
+enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
+                               { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
+                               die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac