diff -ruN a/configure.ac b/configure.ac
--- a/configure.ac	2012-03-29 21:44:28.000000000 +0200
+++ b/configure.ac	2020-02-09 18:27:31.599127781 +0100
@@ -728,82 +728,9 @@
 
 if test "x$with_faad2" != "xno"; then
 
-OLD_CFLAGS=$CFLAGS
-OLD_LIBS=$LIBS
-
 CFLAGS="$CFLAGS"
 LIBS="$LIBS -lfaad -lm"
 
-AC_MSG_CHECKING(for neaacdec.h usability for faad2)
-
-
-AC_TRY_RUN([
-    #include <neaacdec.h>
-    #include <stdio.h>
-    main()
-    {
-    int faad_major;
-    int faad_minor;
-    faacDecHandle dec;
-
-    if(sscanf(FAAD2_VERSION, "%d.%d", &faad_major, &faad_minor) < 2)
-      return -1;
-    dec = faacDecOpen();
-    if(!dec)
-      return -1;
-    return 0;
-    }
-  ],
-  [
-    # program could be run
-    have_faad2="true"
-    AC_MSG_RESULT(yes)
-    FAAD2_CFLAGS=$CFLAGS
-    FAAD2_LIBS=$LIBS
-    AC_DEFINE(HAVE_NEAACDEC_H)
-  ],
-    # program could not be run
-    AC_MSG_RESULT(no)
-)
-
-if test "x$have_faad2" != "xtrue"; then
-
-AC_MSG_CHECKING(for faad.h usability for faad2)
-
-AC_TRY_RUN([
-    #include <faad.h>
-    #include <stdio.h>
-    main()
-    {
-    int faad_major;
-    int faad_minor;
-    faacDecHandle dec;
-
-    if(sscanf(FAAD2_VERSION, "%d.%d", &faad_major, &faad_minor) < 2)
-      return -1;
-    dec = faacDecOpen();
-    if(!dec)
-      return -1;
-    return 0;
-    }
-  ],
-  [
-    # program could be run
-    have_faad2="true"
-    AC_MSG_RESULT(yes)
-    FAAD2_CFLAGS=$CFLAGS
-    FAAD2_LIBS=$LIBS
-    
-
-  ],
-    # program could not be run
-    AC_MSG_RESULT(no)
-)
-
-fi
-
-CFLAGS=$OLD_CFLAGS
-LIBS=$OLD_LIBS
 
 fi