--- acinclude.m4	2003-05-04 11:41:26.000000000 +0200
+++ acinclude.m4	2015-08-30 14:11:25.882425946 +0200
@@ -1,7 +1,7 @@
 dnl PATH_AVILIB([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
 dnl Test for avilib, and define AVILIB_CFLAGS and AVILIB_LIBS
 dnl
-AC_DEFUN(PATH_AVILIB,
+AC_DEFUN([PATH_AVILIB],
 [dnl 
 dnl Get the cflags and libraries
 dnl
@@ -23,7 +23,7 @@
 dnl XIPH_PATH_OGG([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
 dnl Test for libogg, and define OGG_CFLAGS and OGG_LIBS
 dnl
-AC_DEFUN(XIPH_PATH_OGG,
+AC_DEFUN([XIPH_PATH_OGG],
 [dnl 
 dnl Get the cflags and libraries
 dnl
@@ -118,7 +118,7 @@
 dnl XIPH_PATH_VORBIS([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
 dnl Test for libvorbis, and define VORBIS_CFLAGS and VORBIS_LIBS
 dnl
-AC_DEFUN(XIPH_PATH_VORBIS,
+AC_DEFUN([XIPH_PATH_VORBIS],
 [dnl 
 dnl Get the cflags and libraries
 dnl
@@ -227,7 +227,7 @@
         ifelse([$3],[],[:],[$3])
     fi])
 
-AC_DEFUN(PATH_DEBUG,[
+AC_DEFUN([PATH_DEBUG],[
 AC_ARG_ENABLE([debug],
     [  --enable-debug             compile with debug information])
 if test x"$enable_debug" = x"yes"; then
@@ -239,7 +239,7 @@
   AC_SUBST(DEBUG_CFLAGS)
 ])
 
-AC_DEFUN(PATH_PROFILING,[
+AC_DEFUN([PATH_PROFILING],[
 AC_ARG_ENABLE([profiling],
     [  --enable-profiling         compile with profiling information])
 if test x"$enable_profiling" = x"yes"; then
@@ -258,7 +258,7 @@
 dnl Test for LIBDVDREAD, and define LIBDVDREAD_CFLAGS and LIBDVDREAD_LIBS
 dnl
 
-AC_DEFUN(AM_PATH_LIBDVDREAD,
+AC_DEFUN([AM_PATH_LIBDVDREAD],
 [
 
 AC_ARG_WITH(dvdread,[  --with-dvdread               use installed libdvdread library (default=yes)],[case "${withval}" in
