1 dnl ######################################################################
4 dnl Are we using FreeBSD's make?
5 dnl if we are building outside the srcdir and either
6 dnl force_ntp_vpath_hack is set
8 dnl we're on freebsd and not using GNU make
9 dnl then we want VPATH_HACK to be true in automake tests
11 AC_DEFUN([NTP_VPATH_HACK], [
12 AC_MSG_CHECKING([to see if we need a VPATH hack])
14 case "$srcdir::$build_os::${force_ntp_vpath_hack+set}" in
21 case "`${MAKE-make} -v -f /dev/null 2>/dev/null | grep 'GNU Make'`" in
26 AC_MSG_RESULT($ntp_vpath_hack)
27 AM_CONDITIONAL([VPATH_HACK], [test x$ntp_vpath_hack = xyes])
29 dnl ======================================================================