noweb.m4
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noweb.m4
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	dnl noweb.m4 -- checks for NOWEB programs
	dnl

	### Determine paths to noweb components
	AC_DEFUN([WO_PROG_NOWEB],
	[dnl
	AC_ARG_ENABLE([noweb],
	[AC_HELP_STRING([--disable-noweb],
	[disable the noweb programs, even if available [[no]]])])
	if test "$enable_noweb" != "no"; then
	AC_PATH_PROG([NOTANGLE], [notangle])
	AC_PATH_PROG([CPIF], [cpif])
	AC_PATH_PROG([NOWEAVE], [noweave])
	fi
	AC_SUBST([NOTANGLE])
	AC_SUBST([NOWEAVE])
	AC_SUBST([CPIF])
	if test "$enable_distribution" = "yes"; then
	if test "$NOTANGLE" = "" -o "$CPIF" = "" -o "$NOWEAVE" = ""; then
	AC_MSG_NOTICE([error: **************************************])
	AC_MSG_NOTICE([error: Noweb not or not completely installed.])
	AC_MSG_ERROR([**************************************])
	fi
	fi
	AC_ARG_ENABLE([noweb-force],
	[AC_HELP_STRING([--disable-noweb-force],
	[force to disable the noweb programs, even if available, which is for distribution testing purposes only. The default never has any effect. [[no]]])])
	if test "$enable_noweb_force" = "no"; then
	AC_MSG_WARN([**************************************************])
	AC_MSG_WARN([ Noweb switched off by force for testing purposes.])
	AC_MSG_WARN([**************************************************])
	fi
	AM_CONDITIONAL([NOWEB_AVAILABLE],
	[test "$enable_noweb" != "no" -a "$enable_noweb_force" != "no" -a -n "$NOTANGLE" -a -n "$CPIF" -a -n "$NOWEAVE"])
	])