AC_DEFUN([BB_ENABLE_DOXYGEN], [

AC_ARG_ENABLE([doxygen],

	[AS_HELP_STRING([--disable-doxygen], [Disable documentation generation with doxygen])],

	[enable_doxygen="$enableval"],

	[enable_doxygen=yes]

)

AC_ARG_ENABLE([dot],

	[AS_HELP_STRING([--disable-dot], [Disable graph generating using 'dot'])],

	[enable_dot="$enableval"],

	[enable_dot=yes]

)

AC_ARG_ENABLE([html-docs],

	[AS_HELP_STRING([--disable-html-docs], [Disable HTML generation with doxygen])],

	[enable_html_docs="$enableval"],

	[enable_html_docs=yes]

)

AC_ARG_ENABLE([latex-docs],

	[AS_HELP_STRING([--enable-latex-docs], [Enable LaTeX generation with doxygen])],

	[enable_latex_docs="$enableval"],

	[enable_latex_docs=no]

)

AS_IF([test "x$enable_doxygen" = "xno"], [

	enable_doc=no

], [

	AC_PATH_PROG(DOXYGEN, [doxygen])

	AS_IF([test -z "$DOXYGEN"], [

		AC_MSG_WARN([*** Could not find doxygen in your PATH.])

		AC_MSG_WARN([*** The documentation will not be built.])

		enable_doc=no

	], [

		enable_doc=yes

		AC_PATH_PROG(DOT, [dot])

	])

])

AM_CONDITIONAL(DOC, [test "x$enable_doc" = "xyes"])

AS_IF([test -z "$DOT"], [

	AS_IF([test "xenable_dot" = "xyes"], [

		AC_MSG_WARN([*** Could not find dot in your PATH.])

		AC_MSG_WARN([*** The documentation graphs will not be generated.])

		enable_dot=no

	])

])

AC_SUBST(enable_dot)

AC_SUBST(enable_html_docs)

AC_SUBST(enable_latex_docs)

])