It's not part of the POSIX standard [0] and as such non GNU ar implementations don't usually have it.
It's not relevant for the use case here anyway, as the archive file is recreated every time due to the rm invocation before the ar call. No file name matching should happen so matching using the full path name or a relative one should yield the same result. This fixes the build on FreeBSD. Signed-off-by: Roger Pau Monné <roger....@citrix.com> [0] https://pubs.opengroup.org/onlinepubs/9699919799/utilities/ar.html --- I'm unsure whether the r and s options are also needed, since they seem to only be relevant when updating a library, and Xen build system always removes the old library prior to any ar call. --- xen/Rules.mk | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/xen/Rules.mk b/xen/Rules.mk index aba6ca2a90..8fcffffc98 100644 --- a/xen/Rules.mk +++ b/xen/Rules.mk @@ -71,7 +71,7 @@ cmd_ld = $(LD) $(XEN_LDFLAGS) -r -o $@ $(filter-out %.a,$(real-prereqs)) \ # --------------------------------------------------------------------------- quiet_cmd_ar = AR $@ -cmd_ar = rm -f $@; $(AR) cPrs $@ $(real-prereqs) +cmd_ar = rm -f $@; $(AR) crs $@ $(real-prereqs) # Objcopy # --------------------------------------------------------------------------- -- 2.29.2
