divertctrl/configure.ac: updated from configure.in

* rename configure.in to configure.ac for recent autotools
* require autoconf 2.68
* update/remove obsolete macros
* quote arguments to AC_../AM_.. macros
* add missing macros CONFIG_{SBIN,MAN}DIR

divertctrl/configure.ac

@@ -1,9 +1,14 @@
 dnl Process this file with autoconf to produce a configure script.
+
+AC_PREREQ([2.68])
+
 AC_INIT(divertctrl.c)
-AC_PREFIX_DEFAULT(/usr)
+AC_PREFIX_DEFAULT([/usr])
 
 I4LCONFDIR=${I4LCONFDIR:-"/etc/isdn"}
 I4LVERSION=${I4LVERSION:-"?.?"}
+CONFIG_SBINDIR=${sbindir:-"/usr/sbin"}
+CONFIG_MANDIR=${mandir:-"/usr/man"}
 MANDATE=`grep CHECKIN divertctrl.man.in | awk '{print $4}'`
 
 dnl Checks for programs.
@@ -14,26 +19,22 @@ dnl Checks for libraries.
 
 dnl Checks for header files.
 AC_HEADER_STDC
-AC_CHECK_HEADERS(fcntl.h sys/ioctl.h unistd.h)
-
-AC_CHECK_HEADERS(linux/isdn.h)
+AC_CHECK_HEADERS(fcntl.h sys/ioctl.h unistd.h linux/isdn.h)
 
 dnl Checks for typedefs, structures, and compiler characteristics.
 
 dnl Checks for library functions.
-AC_PROG_GCC_TRADITIONAL
 AC_FUNC_MMAP
 
 dnl Check, if user wants dump option for debugging
-AC_ARG_ENABLE(dump,--enable-dump        Enable dump feature for debugging,\
+AC_ARG_ENABLE(dump,
+	[  --enable-dump        Enable dump feature for debugging],
 	DEBUGVAR=-D__DEBUGVAR__)
 
-AC_SUBST(INSTALL)
 AC_SUBST(DEBUGVAR)
 AC_SUBST(MANDATE)
 AC_SUBST(I4LCONFDIR)
 AC_SUBST(I4LVERSION)
-AC_SUBST(INSTALL)
 AC_SUBST(CONFIG_SBINDIR)
 AC_SUBST(CONFIG_MANDIR)
 AC_OUTPUT(Makefile divertctrl.man)