##			   -*- Autoconf -*-

AC_DEFUN(ARG_WITH_DOXYGEN,
[AC_ARG_WITH(doxygen,
AC_HELP_STRING([--enable-doxygen],
		[enable documentation generation with doxygen (yes)]),
[if test "x$withval" = xyes; then
  with_doxygen=doxygen
else
  with_doxygen="${withval-doxygen}"
fi], [with_doxygen=doxygen])
AC_ARG_WITH(dot,
AC_HELP_STRING([--enable-dot],[use 'dot' to generate graphs in doxygen (yes)]),
[if test "x$withval" = xyes; then
  with_dot=dot
else
  with_dot="${withval-dot}"
fi],[with_dot=dot])
AC_ARG_ENABLE(html-docs,
AC_HELP_STRING([--enable-html-docs],[enable HTML generation with doxygen (yes)]),
    [], [ enable_html_docs=yes])
AC_ARG_ENABLE(latex-docs,
AC_HELP_STRING([--enable-latex-docs],
    [enable LaTeX documentation generation with doxygen (no)]),
    [], [ enable_latex_docs=no])

if test "x$with_doxygen" = xno; then
  enable_doc=no
else
  AC_PATH_PROG(DOXYGEN, $with_doxygen, , $PATH)
  if test x$DOXYGEN = x; then
    AC_MSG_WARN([could not find doxygen])
    enable_doc=no
  else
    enable_doc=yes
  fi
fi

AM_CONDITIONAL(DOC, test x$enable_doc = xyes)

if test "x$with_dot" = xno; then
  enable_dot=no
else
  AC_PATH_PROG(DOT, $with_dot,,$PATH)
  if test x$DOT = x; then
    AC_MSG_WARN([could not find dot])
    enable_dot=no
  else
    enable_dot=yes
    DOT_PATH=`dirname $DOT`
  fi
fi

AC_SUBST(DOT_PATH)
AC_SUBST(enable_dot)
AC_SUBST(enable_html_docs)
AC_SUBST(enable_latex_docs)
])