dnl
dnl LIBGTOP_CHECK_TYPE
dnl
dnl Improved version of AC_CHECK_TYPE which takes into account
dnl that we need to #include some other header files on some
dnl systems to get some types.

dnl AC_LIBGTOP_CHECK_TYPE(TYPE, DEFAULT)
AC_DEFUN(AC_LIBGTOP_CHECK_TYPE,
[AC_REQUIRE([AC_HEADER_STDC])dnl
AC_MSG_CHECKING(for $1)
AC_CACHE_VAL(ac_cv_type_$1,
[AC_EGREP_CPP(dnl
changequote(<<,>>)dnl
<<(^|[^a-zA-Z_0-9])$1[^a-zA-Z_0-9]>>dnl
changequote([,]), [#include <sys/types.h>
#if STDC_HEADERS
#include <stdlib.h>
#include <stddef.h>
#endif

/* For Tru64 */
#ifdef HAVE_SYS_BITYPES_H
#include <sys/bitypes.h>
#endif
], ac_cv_type_$1=yes, ac_cv_type_$1=no)])dnl
AC_MSG_RESULT($ac_cv_type_$1)
if test $ac_cv_type_$1 = no; then
  AC_DEFINE($1, $2)
fi
])

dnl This is used internally for <glibtop-config.h>.

AC_DEFUN([GNOME_LIBGTOP_TYPES_PRIVATE],
[
	AC_CHECK_HEADERS(sys/bitypes.h)
	AC_LIBGTOP_CHECK_TYPE(u_int64_t, unsigned long long int)
	AC_LIBGTOP_CHECK_TYPE(int64_t, signed long long int)
	AC_LIBGTOP_CHECK_TYPE(u_int8_t, unsigned char)
	AC_LIBGTOP_CHECK_TYPE(int8_t, signed char)
])

dnl This file is intended for use both internally in libgtop and in every program
dnl that wants to use it.
dnl
dnl It defines the following variables:
dnl
dnl * 'libgtop_sysdeps_dir'    - sysdeps dir for libgtop.
dnl * 'libgtop_sysdeps_name'   - name of the sysdeps dir.
dnl * 'libgtop_use_machine_h'  - some of system dependend parts of libgtop provide
dnl                              their own header file. In this case we need to
dnl                              define 'HAVE_GLIBTOP_MACHINE_H'.
dnl * 'libgtop_need_server'    - is the server really needed? Defines 'NEED_LIBGTOP'
dnl                              if true; defines conditional 'NEED_LIBGTOP'.

AC_DEFUN([LIBGTOP_HACKER_TESTS],[
	AC_REQUIRE([AC_CANONICAL_HOST])

	case "$host_os" in
	linux*)
	  AC_ARG_WITH(linux-sysctl,
	  [  --with-linux-sysctl     Use the sysctl () interface from Martin Baulig],[
	  linux_sysctl="$withval"],[linux_sysctl=auto])
	  if test $linux_sysctl = yes ; then
	    AC_CHECK_HEADER(linux/libgtop.h, linux_sysctl=yes, linux_sysctl=no)
	  elif test $linux_sysctl = auto ; then
	    AC_MSG_CHECKING(for LibGTop sysctl support in Linux Kernel)
	    AC_TRY_RUN([
#include <stdio.h>
#include <stdlib.h>

#include <sys/user.h>
#include <sys/sysctl.h>
#include <linux/libgtop.h>

#define SIZE(x) sizeof(x)/sizeof(x[0])

int name[2] = { CTL_LIBGTOP, LIBGTOP_VERSION };

int
main (void)
{
    unsigned version;
    size_t size = sizeof (version);

    if (sysctl (name, SIZE (name), &version, &size, NULL, 0))
	exit (1);
    else if (version < 1)
	exit (2);
    else
	exit (0);
}
], linux_sysctl=yes, linux_sysctl=no, linux_sysctl=no)
	    AC_MSG_RESULT($linux_sysctl)
	  fi
	  if test $linux_sysctl = yes ; then
	    AC_DEFINE(HAVE_LINUX_SYSCTL)
	  fi
	  AM_CONDITIONAL(LINUX_SYSCTL, test $linux_sysctl = yes)
	  ;;
	esac
])

AC_DEFUN([LIBGTOP_CHECK_SYSDEPS_DIR],[
	AC_MSG_CHECKING(for libgtop sysdeps directory)

	case "$host_os" in
	linux*)
	  libgtop_sysdeps_dir=linux
	  libgtop_use_machine_h=no
	  libgtop_have_sysinfo=no
	  libgtop_need_server=no
	  libgtop_have_sysdeps=yes
	  libgtop_dynlink_ok=yes
	  ;;
	freebsd*|netbsd*|openbsd*)
	  libgtop_sysdeps_dir=freebsd
	  libgtop_use_machine_h=yes
	  libgtop_need_server=yes
	  libgtop_have_sysdeps=no
	  libgtop_postinstall='chgrp kmem $(bindir)/libgtop_server && chmod 2755 $(bindir)/libgtop_server'
	  libgtop_dynlink_ok=yes
	  ;;
        bsdi*)
	  libgtop_sysdeps_dir=freebsd
	  libgtop_use_machine_h=yes
	  libgtop_need_server=yes
	  libgtop_have_sysdeps=no
	  libgtop_postinstall='chgrp kmem $(bindir)/libgtop_server && chmod 2755 $(bindir)/libgtop_server'
	  libgtop_dynlink_ok=yes
	  ;;
	solaris*)
	  libgtop_sysdeps_dir=solaris
	  libgtop_use_machine_h=yes
	  libgtop_need_server=yes
	  libgtop_have_sysdeps=yes
	  libgtop_postinstall='chgrp sys $(bindir)/libgtop_server && chmod 2755 $(bindir)/libgtop_server'
	  libgtop_dynlink_ok=no
	  ;;
	osf*)
	  libgtop_sysdeps_dir=osf1
	  libgtop_use_machine_h=yes
	  libgtop_need_server=yes
	  libgtop_have_sysdeps=yes
	  libgtop_dynlink_ok=yes
	  ;;
	*)
	  if test x$hacker_mode = xyes ; then
	    case "$host_os" in
	    sunos4*)
	      #Please note that this port is obsolete and not working at
	      #all. It is only useful for people who want to fix it ... :-)
	      libgtop_sysdeps_dir=sun4
	      libgtop_use_machine_h=yes
	      libgtop_need_server=yes
	      libgtop_have_sysdeps=no
	      libgtop_dynlink_ok=no
	      ;;
	    *)
	      libgtop_sysdeps_dir=stub
	      libgtop_use_machine_h=no
	      libgtop_need_server=no
	      libgtop_have_sysdeps=yes
	      libgtop_dynlink_ok=yes
	      ;;
	    esac
	  else
	    libgtop_sysdeps_dir=stub
	    libgtop_use_machine_h=no
	    libgtop_need_server=no
	    libgtop_have_sysdeps=yes
	    libgtop_dynlink_ok=yes
	  fi
	  ;;
	esac

	test -z "$libgtop_postinstall" && libgtop_postinstall=:

	AC_MSG_RESULT($libgtop_sysdeps_dir)
])

AC_DEFUN([GNOME_LIBGTOP_DYNLINK],[
	AC_MSG_CHECKING(whether to build gmodulized LibGTop)

	AC_ARG_ENABLE(modules,
	[  --disable-modules       Disables dynamic module loading],[
	if test x$withval = xyes; then 
	  with_modules=yes
        else
          with_modules=no
	fi
	],[with_modules=auto])

	dynworks=false
	deps=
	if test x$with_modules = xno; then
	  AC_MSG_RESULT(no)
	else
	  AC_MSG_RESULT(yes)
	fi

	AC_MSG_CHECKING(whether dynamic modules work)
	if test x$with_modules = xauto; then
	  oLIBS="$LIBS"
	  oCFLAGS="$CFLAGS"
	  LIBS="`glib-config --libs gmodule`"
	  CFLAGS="`glib-config --cflags gmodule`"
	  AC_TRY_RUN([
	    #include <glib.h>
	    #include <gmodule.h>
	    main ()
	    {
	    	if (g_module_supported ())
	    	    exit (0);
	    	else
	    	    exit (1);
	    }
	  ], dynworks=true, dynworks=false, dynworks=true)
	  LIBS="$oLIBS"
	  CFLAGS="$oCFLAGS"
    
	  dnl Now we check to see if our libtool supports shared lib deps
	  dnl (in a rather ugly way even)
	  if $dynworks; then
	    libgtop_libtool_config="${CONFIG_SHELL-/bin/sh} libtool --config"
	    libgtop_deplibs_check=`$libgtop_libtool_config | \
	      grep '^[[a-z_]]*check[[a-z_]]*_method=[['\''\"]]' | \
	        sed 's/.*[['\''"]]\(.*\)[['\''"]]$/\1/'`
	    if test "x$libgtop_deplibs_check" = "xnone" || \
	      test "x$libgtop_deplibs_check" = "xunknown" || \
	      test "x$libgtop_deplibs_check" = "x"; then
	        dynworks=false
	    fi
	  fi
	elif test x$with_modules = xyes; then
	  dynworks=true
	else
	  dynworks=false
	fi

	if $dynworks; then
	  AC_DEFINE(LIBGTOP_USE_GMODULE)
	  GMODULE_LIBS="`glib-config --libs gmodule`"
	  GMODULE_FLAGS="`glib-config --cflags gmodule`"
	  AC_SUBST(GMODULE_LIBS)
	  AC_SUBST(GMODULE_FLAGS)
	  libgtop_use_gmodule=yes
	  libgtop_dynamic_ldflags='-export-dynamic -module'
	else
	  libgtop_use_gmodule=no
	  libgtop_dynamic_ldflags=
	fi

	AC_MSG_RESULT($libgtop_use_gmodule)

	AC_SUBST(libgtop_dynamic_ldflags)
])

AC_DEFUN([GNOME_LIBGTOP_SYSDEPS],[
	AC_REQUIRE([AC_CANONICAL_HOST])

	AC_SUBST(libgtop_sysdeps_dir)
	AC_SUBST(libgtop_sysdeps_name)
	AC_SUBST(libgtop_use_machine_h)
	AC_SUBST(libgtop_need_server)
	AC_SUBST(libgtop_have_sysdeps)

	AC_ARG_ENABLE(hacker-mode,
	[  --enable-hacker-mode    Enable building of unstable sysdeps],
	[hacker_mode="$enableval"], [hacker_mode=no])

	AM_CONDITIONAL(HACKER_MODE, test x"$hacker_mode" = xyes)

	if test x$hacker_mode = xyes ; then
	  LIBGTOP_HACKER_TESTS
	  AC_ARG_WITH(sysdeps-dir,
	  [  --with-sysdeps-dir      Manually override sysdeps directory],[override_sysdeps_dir="$withval"],[override_sysdeps_dir=no])
	else
	  override_sysdeps_dir=no
	fi

	AC_ARG_WITH(libgtop-smp,
	[  --with-libgtop-smp      Enable SMP support (default-auto)],[
	libgtop_smp="$withval"],[libgtop_smp=auto])

	if test $libgtop_smp = auto ; then
	  AC_MSG_CHECKING(whether to enable SMP support)
	  case "$host_os" in
	  linux*)
	    libgtop_smp=yes
	    ;;
	  *)
	    libgtop_smp=no
	    ;;
	  esac
	  AC_MSG_RESULT($libgtop_smp)
	fi

	if test $libgtop_smp = yes ; then
	  AC_DEFINE(HAVE_LIBGTOP_SMP)
	fi

	AM_CONDITIONAL(LIBGTOP_SMP, test $libgtop_smp = yes)

	if test x$override_sysdeps_dir = xno ; then
	  LIBGTOP_CHECK_SYSDEPS_DIR
	else
	  case $override_sysdeps_dir in
	  stub)
	    libgtop_sysdeps_dir=stub
	    libgtop_use_machine_h=no
	    libgtop_have_sysinfo=no
	    libgtop_need_server=no
	    libgtop_have_sysdeps=yes
	    libgtop_dynlink_ok=yes
	    ;;
	  stub_suid)
	    libgtop_sysdeps_dir=stub_suid
	    libgtop_use_machine_h=yes
	    libgtop_have_sysinfo=no
	    libgtop_need_server=yes
	    libgtop_have_sysdeps=no
	    libgtop_dynlink_ok=yes
	    ;;
	  linux|kernel)
	    libgtop_sysdeps_dir=linux
	    libgtop_use_machine_h=no
	    libgtop_have_sysinfo=no
	    libgtop_need_server=no
	    libgtop_have_sysdeps=yes
	    libgtop_dynlink_ok=yes
	    ;;
	  bsd)
	    libgtop_sysdeps_dir=freebsd
	    libgtop_use_machine_h=yes
	    libgtop_need_server=yes
	    libgtop_have_sysdeps=no
	    libgtop_postinstall='chgrp kmem $(bindir)/libgtop_server && chmod 2755 $(bindir)/libgtop_server'
	    libgtop_dynlink_ok=yes
	    ;;
	  solaris)
	    libgtop_sysdeps_dir=solaris
	    libgtop_use_machine_h=yes
	    libgtop_need_server=yes
	    libgtop_have_sysdeps=yes
	    libgtop_postinstall='chgrp sys $(bindir)/libgtop_server && chmod 2755 $(bindir)/libgtop_server'
	    libgtop_dynlink_ok=no
	    ;;
	  osf)
	    libgtop_sysdeps_dir=osf1
	    libgtop_use_machine_h=yes
	    libgtop_need_server=yes
	    libgtop_have_sysdeps=yes
	    libgtop_dynlink_ok=yes
	    ;;
	  *)
	    AC_MSG_ERROR(Invalid value for --with-sysdeps-dir)
	    ;;
	  esac
	fi

	AC_MSG_CHECKING(for libgtop sysdeps name)
	libgtop_sysdeps_name=`echo $libgtop_sysdeps_dir | sed -e 's/_/-/g'`
	AC_MSG_RESULT($libgtop_sysdeps_name)

	AC_MSG_CHECKING(whether to use dynamic linking in LibGtop)
	AC_MSG_RESULT($libgtop_dynlink_ok)

	AC_SUBST(libgtop_sysdeps_dir)
	AC_SUBST(libgtop_postinstall)
	AC_SUBST(libgtop_have_sysinfo)

	case "$host_os" in
	*bsd*)
	  AC_CHECK_HEADERS(net/if_var.h osreldate.h)
	  AC_MSG_CHECKING([for I4B])
	  AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>

#include <net/if.h>
#include <net/if_types.h>

#ifdef HAVE_NET_IF_VAR_H
#include <net/if_var.h>
#endif

#include <net/netisr.h>
#include <net/route.h>

#if defined(__FreeBSD__) || defined(__NetBSD__)
#include <net/if_sppp.h>
#else
#include <i4b/sppp/if_sppp.h>
#endif
],[
	size_t size = sizeof (struct sppp);
], have_i4b=yes, have_i4b=no)
	  AC_MSG_RESULT($have_i4b)
	  if test x$have_i4b = xyes; then
	    AC_DEFINE(HAVE_I4B)
	    AC_MSG_CHECKING([for I4B accounting])
	    AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>

#include <net/if.h>
#include <net/if_types.h>

#ifdef HAVE_NET_IF_VAR_H
#include <net/if_var.h>
#endif

#include <net/netisr.h>
#include <net/route.h>

#if defined(__FreeBSD__) || defined(__NetBSD__)
#include <net/if_sppp.h>
#else
#include <i4b/sppp/if_sppp.h>
#endif

#include <machine/i4b_acct.h>
],[
	size_t size = sizeof (struct i4bisppp_softc);
], have_i4b_acct=yes, have_i4b_acct=no)
	    AC_MSG_RESULT($have_i4b_acct)
	    if test x$have_i4b_acct = xyes ; then
	      AC_DEFINE(HAVE_I4B_ACCT)
	    else
	      AC_WARN([
*** I4B accounting disabled - you won't get any PPP statistics.
*** Read "misc/i4b_acct.txt" in the LibGTop source directory
*** to see how to enable it.])
	    fi
	  fi
	  ;;
	linux*)
	  os_major_version=`uname -r | sed 's/-pre[[0-9]]*//' | \
	    sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
	  os_minor_version=`uname -r | sed 's/-pre[[0-9]]*//' | \
	    sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
	  os_micro_version=`uname -r | sed 's/-pre[[0-9]]*//' | \
	    sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
	  os_version_expr="$os_major_version 65536 * $os_minor_version 256 * + $os_micro_version + p q"

	  AC_CHECK_HEADERS(linux/version.h, have_linux_version_h=yes,
	    have_linux_version_h=no)

	  if test x$have_linux_version_h = xyes ; then
	    version_code=`cat /usr/include/linux/version.h | \
	      grep \#define | grep LINUX_VERSION_CODE`
	    os_version_code=`echo $version_code | \
	      sed 's/^.*LINUX_VERSION_CODE[[ \t]]*\([[0-9]]*\).*$/\1/'`
	  else
	    os_version_code=`echo "$os_version_expr" | dc`
	  fi

	  AC_MSG_CHECKING(for Linux kernel version code)
	  AC_DEFINE_UNQUOTED(GLIBTOP_LINUX_VERSION_CODE, $os_version_code)
	  AC_MSG_RESULT($os_version_code)
	  ;;
	solaris*)
	  os_major_version=`uname -r | sed 's/\([[0-9]]*\).\([[0-9]]\)\.*\([[0-9]]*\)/\1/'`
	  os_minor_version=`uname -r | sed 's/\([[0-9]]*\).\([[0-9]]\)\.*\([[0-9]]*\)/\2/'`
	  os_micro_version=`uname -r | sed 's/\([[0-9]]*\).\([[0-9]]\)\.*\([[0-9]]*\)/\3/'`
	  test -z "$os_micro_version" && os_micro_version=0
	  os_version_expr="$os_major_version 100 * $os_minor_version 10 * + $os_micro_version + p q"
	  os_version_code=`echo "$os_version_expr" | dc`

	  AC_MSG_CHECKING(for Solaris release code)
	  AC_DEFINE_UNQUOTED(GLIBTOP_SOLARIS_RELEASE, $os_version_code)
	  AC_MSG_RESULT($os_version_code)
	  ;;
	esac

	AC_MSG_CHECKING(for Modem lockfile)
	AC_ARG_WITH(modem-lockfile,
	  [  --with-modem-lockfile   Modem lockfile for PPP support],[libgtop_modem_lockfile="$withval"],
	  [if test -f /dev/modem ; then
	     libgtop_modem_lockfile='/var/lock/LCK..modem'
	   else
	     libgtop_modem_lockfile='/var/lock/LCK..ttyS%u'
	   fi])
	AC_MSG_RESULT($libgtop_modem_lockfile)
	AC_DEFINE_UNQUOTED(LIBGTOP_MODEM_LOCKFILE, "$libgtop_modem_lockfile")

	AC_MSG_CHECKING(for machine.h in libgtop sysdeps dir)
	AC_MSG_RESULT($libgtop_use_machine_h)

	AC_MSG_CHECKING(whether we need libgtop)
	AC_MSG_RESULT($libgtop_need_server)

	if test x$libgtop_need_server = xyes ; then
	  AC_DEFINE(NEED_LIBGTOP)
	fi

	if test x$libgtop_use_machine_h = xyes ; then
	  AC_DEFINE(HAVE_GLIBTOP_MACHINE_H)
	fi

	if test x$libgtop_dynlink_ok = xyes ; then
	  GNOME_LIBGTOP_DYNLINK
	else
	  libgtop_use_gmodule=no
	fi

	AC_SUBST(libgtop_use_gmodule)

	if test x$libgtop_have_sysdeps = xyes ; then
	  AC_DEFINE(LIBGTOP_HAVE_SYSDEPS)
	fi

	if test x$libgtop_need_server = xyes ; then
	  AC_DEFINE(LIBGTOP_NEED_SERVER)
	fi

	AM_CONDITIONAL(NEED_LIBGTOP, test x$libgtop_need_server = xyes)
	AM_CONDITIONAL(HAVE_SYSDEPS, test x$libgtop_have_sysdeps = xyes)
	AM_CONDITIONAL(LIBGTOP_USE_GMODULE, test x$libgtop_use_gmodule = xyes)
])

dnl
dnl LIBGTOP_XML_HOOK (script-if-xml-found, failflag)
dnl
dnl If failflag is "failure", script aborts due to lack of XML
dnl 
dnl Check for availability of the libxml library
dnl the XML parser uses libz if available too
dnl

AC_DEFUN([LIBGTOP_XML_HOOK],[
	LIBGTOP_XML_LIB=
	AC_PATH_PROG(XML_CONFIG,xml-config,no)
	if test "$XML_CONFIG" = no; then
		if test x$2 = xfailure; then
			AC_MSG_ERROR(Could not find xml-config)
		else
			AC_MSG_WARN(Could not find xml-config)
		fi
	else
		AC_CHECK_LIB(xml, xmlDocGetRootElement, [
			$1
			LIBGTOP_XML_LIB=`$XML_CONFIG --libs`
			AC_DEFINE(HAVE_LIBXML)
		], [
			if test x$2 = xfailure; then 
				AC_MSG_ERROR(Could not link sample xml program)
			else
				AC_MSG_WARN(Could not link sample xml program)
			fi
		], `$XML_CONFIG --libs`)
	fi
	AC_SUBST(LIBGTOP_XML_LIB)
])

AC_DEFUN([LIBGTOP_XML_CHECK], [
	LIBGTOP_XML_HOOK([],failure)
])