# $Id: configure.in,v 1.26 2001/04/17 22:47:37 guy 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(wtap.c)

AC_PREREQ(2.13)

AM_INIT_AUTOMAKE(libwtap.a, 0.0.0)
AM_CONFIG_HEADER(config.h)

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

AC_SUBST(FLEX_PATH)

# If we're running gcc, add '-Wall' to CFLAGS.
AC_MSG_CHECKING(to see if we can add '-Wall' to CFLAGS)
if test x$GCC != x ; then
  CFLAGS="-Wall $CFLAGS"
  AC_MSG_RESULT(yes)
else
  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)
		;;
	*)
		AC_MSG_RESULT(none needed)
		;;
	esac
else
	AC_MSG_RESULT(none needed)
fi

# Check for glib.
AM_PATH_GLIB(1.1.0, CFLAGS="$CFLAGS $GLIB_CFLAGS" LIBS="$LIBS $GLIB_LIBS")

#
# Arrange that we search for header files in "/usr/local/include",
# as various packages we use ("libpcap", "zlib") may have been installed
# under "/usr/local/include".
#
# We do this after checking for GLib, so that "-I/usr/local/include"
# comes after any "-I" flags added by "AM_PATH_GLIB"; if the user has
# installed a pre-1.2.9 version of GLib, it'd probably go under
# "/usr/local", and if they then install 1.2.9 or later without
# uninstalling the pre-1.2.9 version, 1.2.9's header files won't be
# in "/usr/local/include" (they're put in a separate directory so that
# GLib 1.2[.x] and 1.3[.x]/2.x can coexist), and if we search
# "/usr/local/include" before searching the directory "AM_PATH_GLIB"
# specifies, we may pick up headers from the older version.
#
CFLAGS="$CFLAGS -I/usr/local/include"
CPPFLAGS="$CPPFLAGS -I/usr/local/include"

#
# Arrange that we search for libraries in "/usr/local/lib", as we'll
# be testing whether zlib has gzgets, and we need to be able to find
# zlib even if it's in "/usr/local/lib".
#
# We do this after checking for GLib; see above.
#
LDFLAGS="$LDFLAGS -L/usr/local/lib"

dnl Checks for header files
AC_HEADER_STDC
AC_CHECK_HEADERS(sys/time.h netinet/in.h unistd.h fcntl.h sys/stat.h sys/types.h)

AC_CANONICAL_HOST

# We must know our byte order
AC_C_BIGENDIAN

#
# Look for libpcap, so we can include <pcap.h> in libpcap.c if it's
# found.
#
AC_WIRETAP_PCAP_CHECK

dnl zlib check
AC_ARG_ENABLE(zlib,
[  --enable-zlib           use zlib to read compressed data.  [default=yes]],,enable_zlib=yes)

AC_MSG_CHECKING(whether to use zlib for reading compressed capture files)
if test "x$enable_zlib" = "xno" ; then
        AC_MSG_RESULT(no)
else
        AC_MSG_RESULT(yes)
	AC_WIRETAP_ZLIB_CHECK
	if test "x$enable_zlib" = "xno" ; then
		AC_MSG_RESULT(zlib not found - disabling compressed capture file support)
	fi
fi

AC_OUTPUT(Makefile)