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#MIN_CONFIG(3)

AM_INIT_AUTOMAKE(piklab, 0.15.2)

dnl CXXFLAGS="$NOOPT_CXXFLAGS" dnl __kdevelop[noopt]__
dnl CFLAGS="$NOOPT_CFLAGS" dnl __kdevelop[noopt]__
dnl CXXFLAGS="$CXXFLAGS $USE_EXCEPTIONS" dnl __kdevelop[exc]__

dnl KDE_NEED_FLEX dnl __kdevelop__
dnl AC_PROG_YACC dnl __kdevelop__

# --------------------------------------------------------------------------
# check os
case "${host_os}" in
       *linux* ) OSDIR=linux ;;
       *bsd*   ) OSDIR=bsd   LDFLAGS="$LDFLAGS $LIBPTHREAD";;
       *       ) OSDIR=null  ;;
esac
AM_CONDITIONAL(BSD, test x$OSDIR = xbsd)
AM_CONDITIONAL(LINUX, test x$OSDIR = xlinux)
AM_CONDITIONAL(NULL, test x$OSDIR = xnull)
AC_C_BIGENDIAN

# --------------------------------------------------------------------------
# check for parport header (linux)
AC_CACHE_CHECK([for parport header/ppdev.h], ac_cv_c_ppdev,
 AC_TRY_COMPILE(
   [#include <linux/ppdev.h>],
   [ioctl (1,PPCLAIM,0)],
   [ac_cv_c_ppdev="yes"],
   [ac_cv_c_ppdev="no"])
 )
if test "$ac_cv_c_ppdev" = "yes"
then
   AC_DEFINE(HAVE_PPDEV, 1, [Define if we can use ppdev for parallel port access])
fi

# check for ppbus header (FreeBSD)
AC_CACHE_CHECK([for ppbus header/ppi.h], ac_cv_c_ppbus,
 AC_TRY_COMPILE(
   [#include <dev/ppbus/ppi.h>],
   [ioctl (1,PPIGCTRL,0)],
   [ac_cv_c_ppbus="yes"],
   [ac_cv_c_ppbus="no"])
 )
if test "$ac_cv_c_ppbus" = "yes"
then
   AC_DEFINE(HAVE_PPBUS, 1, [Define if we can use ppbus for parallel port access])
fi

# ----------------------------------------------------------------------------
# check for libusb
have_libusb=no
AC_ARG_ENABLE(libusb, AC_HELP_STRING([--disable-libusb],[do not use libusb]),
              [ try_libusb="${enableval}" ], [ try_libusb=yes ] )
if test "x$try_libusb" != xno ; then
  AC_CHECK_PROG([LIBUSBCONFIG], [libusb-config], [yes])
  if test "$LIBUSBCONFIG" = "yes" ; then
    LIBUSB_CFLAGS="$LIBUSB_CFLAGS `libusb-config --cflags`"
    LIBUSB_LIBS="$LIBUSB_LIBS `libusb-config --libs`"
    LIBUSB_VERSION="`libusb-config --version`"
  else
    AC_MSG_WARN([libusb-config not found.])
  fi
  saved_CPPFLAGS="$CPPFLAGS"
  saved_LIBS="$LIBS"
  CPPFLAGS="$CPPFLAGS $LIBUSB_CFLAGS"
  LIBS="$LDFLAGS $LIBUSB_LIBS"
  AC_CHECK_HEADERS(usb.h, [],
    [ AC_MSG_ERROR([usb.h not found, use ./configure LIBUSB_CFLAGS=...]) ])
  AC_MSG_CHECKING([for usb_init])
  AC_TRY_LINK_FUNC(usb_init, [ AC_MSG_RESULT([yes]) ],
    [ AC_MSG_ERROR([libusb not found, use ./configure LIBUSB_LIBS=...]) ])
  CPPFLAGS="$saved_CPPFLAGS"
  LIBS="$saved_LIBS"
  have_libusb=yes
fi
AC_SUBST(LIBUSB_CFLAGS)
AC_SUBST(LIBUSB_LIBS)
if test "$have_libusb" = "yes"
then
  AC_DEFINE(HAVE_USB, 1, [Define if libusb is available])
  AC_DEFINE_UNQUOTED(LIBUSB_VERSION, "$LIBUSB_VERSION", [libusb version])
fi

# ----------------------------------------------------------------------------
# check which libcurses
CPPFLAGS="$CPPFLAGS -L/usr/lib"
AC_CHECK_LIB(curses, main, CURSESLIB="-lcurses",
  [AC_CHECK_LIB(ncurses, main, CURSESLIB="-lncurses")]
)

# ----------------------------------------------------------------------------
# check for readline
have_libreadline=no
AC_ARG_ENABLE(libreadline, AC_HELP_STRING([--disable-libreadline],[do not use libreadline]),
              [ try_libreadline="${enableval}" ], [ try_libreadline=yes ] )
if test "x$try_libreadline" != xno ; then
  LIBREADLINE_LIBS="-lhistory -lreadline $CURSESLIB"
  AC_CHECK_HEADER(readline/readline.h, HAVE_READLINE=true, [ AC_MSG_WARN([readline/readline.h not found]) ])
  if test x${HAVE_READLINE} = xtrue ; then
    saved_CPPFLAGS="$CPPFLAGS"
    saved_LIBS="$LIBS"
    LIBS="$LDFLAGS $LIBREADLINE_LIBS"
    AC_MSG_CHECKING([for rl_initialize])
    AC_TRY_LINK_FUNC(rl_initialize, [
      AC_MSG_RESULT([yes])
      AC_MSG_CHECKING([for using_history])
      AC_TRY_LINK_FUNC(using_history, [
        have_libreadline=yes
        AC_MSG_RESULT([yes])
      ], [ AC_MSG_ERROR([libhistory not found]) ])
    ], [ AC_MSG_ERROR([libreadline not found]) ])
    CPPFLAGS="$saved_CPPFLAGS"
    LIBS="$saved_LIBS"
  fi
fi
AC_SUBST(LIBREADLINE_LIBS)
if test "$have_libreadline" = "yes"
then
  AC_DEFINE(HAVE_READLINE, 1, [Define if libreadline header is present.])
fi