dnl Process this file with autoconf to produce a configure script.
AC_INIT(isdnctrl.c)
AC_PREFIX_DEFAULT(/usr)

dnl Checks for programs.
AC_PROG_INSTALL
AC_PROG_CC

dnl Checks for libraries.

dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(sys/ioctl.h unistd.h)
AC_CHECK_HEADER(linux/isdn.h,,AC_MSG_ERROR("\nMissing linux/isdn.h. Kernel source installed?"))
AC_CHECK_HEADER(linux/isdnif.h,,AC_MSG_ERROR("\nMissing linux/isdnif.h. Kernel source installed?"))

dnl Checks for typedefs, structures, and compiler characteristics.

dnl Checks for library functions.
AC_TYPE_SIGNAL

AC_SUBST(INSTALL)
AC_OUTPUT(Makefile)