Makefile: Use sort shortopts

POSIX does not defined longopts for sort, use shortops
for even more compatibility.

Fixes: cc5a490cf465 ("Makefile: Sort u-boot-initial-env output")
Reported-by: Milan P. Stanić <mps@arvanta.net>
Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Mark Kettenis <kettenis@openbsd.org>
Tested-by: Milan P. Stanić <mps@arvanta.net>

diff --git a/Makefile b/Makefile
index 87f9fc7..5fc16b3 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -2444,7 +2444,7 @@ quiet_cmd_genenv = GENENV  $@
 cmd_genenv = \
        $(objtree)/tools/printinitialenv | \
        sed -e '/^\s*$$/d' | \
-       sort --field-separator='=' -k1,1 --stable -o $@
+       sort -t '=' -k 1,1 -s -o $@
 
 u-boot-initial-env: $(env_h) FORCE
        $(Q)$(MAKE) $(build)=tools $(objtree)/tools/printinitialenv