# $Id: configure.in,v 1.35 2003/01/21 02:12:37 gerald Exp $
dnl
dnl Process this file with autoconf 2.13 or later to produce a
dnl configure script; 2.12 doesn't generate a "configure" script that
dnl defines SHELL, and "Makefile.in" has
dnl
dnl	SHELL = @SHELL@
dnl
dnl which requires it to be defined - and there may be other problems
dnl with pre-2.13 "autoconf" as well.
dnl
AC_INIT(epan.c)

AC_PREREQ(2.13)

dnl Check for CPU / vendor / OS
AC_CANONICAL_HOST
AC_CANONICAL_TARGET

AM_INIT_AUTOMAKE(libethereal.a, 0.9.9)
AM_CONFIG_HEADER(config.h)

dnl Checks for programs.
AC_PROG_CC
AC_PROG_CPP
AC_PROG_YACC
AM_PROG_LEX
AC_PROG_LIBTOOL
AC_PATH_PROG(LEX, flex)

AC_SUBST(FLEX_PATH)

#
# If we're running gcc, add '-Wall -W' to CFLAGS, and add
# '-D_U_="__attribute__((unused))"' as well, so we can use _U_ to
# flag unused function arguments and not get warnings about them.
# If "--with-extra-gcc-checks" was specified, add "-Wcast-qual
# -Wcast-align" as well.  (Add more checks here in the future?)
#
# Otherwise, add '-D_U_=""', so that _U_ used to flag an unused function
# argument will compile with non-GCC compilers.
#
AC_ARG_WITH(extra-gcc-checks,
[  --with-extra-gcc-checks Do additional -W checks in GCC.  [default=no]],
[
	if test $withval != no
	then
		ethereal_extra_gcc_flags=" -Wcast-qual -Wcast-align"
	fi
],)
AC_MSG_CHECKING(to see if we can add '-Wall -W$ethereal_extra_gcc_flags' to CFLAGS)
if test x$GCC != x ; then
  CFLAGS="-D_U_=\"__attribute__((unused))\" -Wall -W$ethereal_extra_gcc_flags $CFLAGS"
  AC_MSG_RESULT(yes)
else
  CFLAGS="-D_U_=\"\" $CFLAGS"
  AC_MSG_RESULT(no)
fi

#
# Add any platform-specific compiler flags needed.
#
AC_MSG_CHECKING(for platform-specific compiler flags)
if test "x$GCC" = x
then
	#
	# Not GCC - assume it's the vendor's compiler.
	#
	case "$host_os" in
	hpux*)
		#
		# HP's ANSI C compiler; flags suggested by Jost Martin.
		# "-Ae" for ANSI C plus extensions such as "long long".
		# "+O2", for optimization.  XXX - works with "-g"?
		#
		CFLAGS="-Ae +O2 $CFLAGS"
		AC_MSG_RESULT(HP ANSI C compiler - added -Ae +O2)
		;;
	darwin*)
		#
		# It may be called "cc", but it's really a GCC derivative
		# with a problematic special precompiler and precompiled
		# headers; turn off the special precompiler, as some
		# apparently-legal code won't compile with its precompiled
		# headers.
		#
		CFLAGS="-no-cpp-precomp $CFLAGS"
		AC_MSG_RESULT(Apple GCC - added -no-cpp-precomp)
		;;
	*)
		AC_MSG_RESULT(none needed)
		;;
	esac
else
	case "$host_os" in
	darwin*)
		#
		# See comments above about Apple's lovely C compiler.
		#
		CFLAGS="-no-cpp-precomp $CFLAGS"
		AC_MSG_RESULT(Apple GCC - added -no-cpp-precomp)
		;;
	*)
	AC_MSG_RESULT(none needed)
	;;
	esac
fi

# Create DATAFILE_DIR #define for config.h
DATAFILE_DIR=$sysconfdir
DATAFILE_DIR=`(
    test "x$prefix" = xNONE && prefix=$ac_default_prefix
    test "x$exec_prefix" = xNONE && exec_prefix=${prefix}
    eval echo "$DATAFILE_DIR"
)`
AC_DEFINE_UNQUOTED(DATAFILE_DIR,"$DATAFILE_DIR")
AC_SUBST(DATAFILE_DIR)

AC_ARG_ENABLE(gtk2,
[  --enable-gtk2           build Glib2/Gtk2+-based (t)ethereal.  [default=no]],enable_gtk2=yes,enable_gtk2=no)

if test "x$enable_gtk2" = "xyes" ; then
	AM_PATH_GLIB_2_0(2.0.0, CFLAGS="$CFLAGS $GLIB_CFLAGS" LIBS="$LIBS $GLIB_LIBS", , gmodule)
else
	AM_PATH_GLIB(1.2.0, CFLAGS="$CFLAGS $GLIB_CFLAGS" LIBS="$LIBS $GLIB_LIBS", , gmodule)
fi

dnl Checks for header files
AC_HEADER_STDC
AC_CHECK_HEADERS(stdarg.h direct.h dirent.h fcntl.h netdb.h unistd.h)
AC_CHECK_HEADERS(sys/param.h sys/socket.h sys/stat.h sys/time.h sys/types.h)
AC_CHECK_HEADERS(netinet/in.h)
AC_CHECK_HEADERS(arpa/inet.h arpa/nameser.h)

dnl ipv6 check
AC_ARG_ENABLE(ipv6,
[  --enable-ipv6           use ipv6 name resolution, if available.  [default=yes]],,enable_ipv6=yes)

AC_MSG_CHECKING(whether to enable ipv6 name resolution if available)
if test "x$enable_ipv6" = "xno" ; then
	AC_MSG_RESULT(no)
else
	AC_MSG_RESULT(yes)
	AC_ETHEREAL_IPV6_STACK
fi

AC_CHECK_FUNC(inet_aton, INET_ATON_O="",
  INET_ATON_O="inet_aton.o")
if test "$ac_cv_func_inet_aton" = no ; then
  INET_ATON_C="inet_aton.c"
  INET_ATON_O="inet_aton.o"
  AC_DEFINE(NEED_INET_ATON_H)
fi
AC_SUBST(INET_ATON_C)
AC_SUBST(INET_ATON_O)

AC_CHECK_FUNC(inet_pton, [
  dnl check for pre-BIND82 inet_pton() bug.
  AC_MSG_CHECKING(for broken inet_pton)
  AC_TRY_RUN([#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
int main()
{
#ifdef AF_INET6
  char buf[16];
  /* this should return 0 (error) */
  return inet_pton(AF_INET6, "0:1:2:3:4:5:6:7:", buf);
#else
  return 1;
#endif
}], [AC_MSG_RESULT(ok);
have_inet_pton=yes], [AC_MSG_RESULT(broken);
have_inet_pton=no], [AC_MSG_RESULT(cross compiling, assume it is broken);
have_inet_pton=no])],
have_inet_pton=no)
if test "$have_inet_pton" = no; then
  INET_PTON_C="inet_pton.c"
  INET_PTON_O="inet_pton.o"
else
  INET_PTON_C=""
  INET_PTON_O=""
fi
AC_SUBST(INET_PTON_C)
AC_SUBST(INET_PTON_O)

AC_CHECK_FUNC(inet_ntop, INET_NTOP_O="",
  INET_NTOP_O="inet_ntop.o")
if test "$ac_cv_func_inet_ntop" = no ; then
  INET_NTOP_C="inet_ntop.c"
  INET_NTOP_O="inet_ntop.o"
  AC_DEFINE(NEED_INET_V6DEFS_H)
fi
AC_SUBST(INET_NTOP_C)
AC_SUBST(INET_NTOP_O)

AC_CHECK_FUNC(strptime, , [AC_DEFINE(NEED_STRPTIME_H)])

#
# Check whether GLib modules are supported, to determine whether we
# can support plugins.
#
AC_MSG_CHECKING(whether GLib supports loadable modules)
#ac_save_CFLAGS="$CFLAGS"
#ac_save_LIBS="$LIBS"
#CFLAGS="$CFLAGS $GLIB_CFLAGS"
#LIBS="$GLIB_LIBS $LIBS"
AC_TRY_RUN([
#include <glib.h>
#include <gmodule.h>
#include <stdio.h>
#include <stdlib.h>

int 
main ()
{
  if (g_module_supported())
    return 0;	/* success */
  else
    return 1;	/* failure */
}
], ac_cv_glib_supports_modules=yes, ac_cv_glib_supports_modules=no,
   [echo $ac_n "cross compiling; assumed OK... $ac_c"])
#CFLAGS="$ac_save_CFLAGS"
#LIBS="$ac_save_LIBS"
if test "$ac_cv_glib_supports_modules" = yes ; then
  AC_MSG_RESULT(yes)
  have_plugins=yes
else
  AC_MSG_RESULT(no)
  have_plugins=no
fi

dnl
dnl check whether plugins should be enabled; we don't set plugindir,
dnl as that's set by the top-level configure script
dnl
AC_ARG_WITH(plugins,
  [  --with-plugins=DIR    support plugins (installed in DIR, if supplied)],
  [
  case "$withval" in
  "" | y | ye | yes )
    ;;
  n | no)
    have_plugins=no
    ;;
  *)
    ;;
  esac
  ]
)

AM_CONDITIONAL(HAVE_PLUGINS, test x$have_plugins = xyes)
if test x$have_plugins = xyes
then
  AC_DEFINE(HAVE_PLUGINS)
fi

AC_OUTPUT(
	Makefile
	dfilter/Makefile
	ftypes/Makefile
)