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Diffstat (limited to 'm4/ntp_vpathhack.m4')
| -rw-r--r-- | m4/ntp_vpathhack.m4 | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/m4/ntp_vpathhack.m4 b/m4/ntp_vpathhack.m4 new file mode 100644 index 000000000000..f4561b3b9c9c --- /dev/null +++ b/m4/ntp_vpathhack.m4 @@ -0,0 +1,29 @@ +dnl ###################################################################### +dnl NTP_VPATH_HACK +dnl +dnl Are we using FreeBSD's make? +dnl if we are building outside the srcdir and either +dnl force_ntp_vpath_hack is set +dnl or +dnl we're on freebsd and not using GNU make +dnl then we want VPATH_HACK to be true in automake tests +dnl +AC_DEFUN([NTP_VPATH_HACK], [ +AC_MSG_CHECKING([to see if we need a VPATH hack]) +ntp_vpath_hack="no" +case "$srcdir::$build_os::${force_ntp_vpath_hack+set}" in + .::*::*) + ;; + *::*::set) + ntp_vpath_hack="yes" + ;; + *::freebsd*::) + case "`${MAKE-make} -v -f /dev/null 2>/dev/null | grep 'GNU Make'`" in + '') + ntp_vpath_hack="yes" + esac +esac +AC_MSG_RESULT([$ntp_vpath_hack]) +AM_CONDITIONAL([VPATH_HACK], [test x$ntp_vpath_hack = xyes]) +]) +dnl ====================================================================== |