[hackers] [sbase] support llvm-ar || Eon S. Jeon

[git]

commit 01d0de84a8ed9b593b02f8eb90933a959ac6c6c4
Author: Eon S. Jeon <esj...@hyunmu.am>
Date:   Tue Feb 3 13:22:04 2015 +0900

    support llvm-ar
    
    llvm-ar doesn't understand flags prefixed with dashes.

diff --git a/Makefile b/Makefile
index d6df4d6..81cb71e 100644
--- a/Makefile
+++ b/Makefile
@@ -156,11 +156,11 @@ $(OBJ): $(HDR) config.mk
        $(CC) $(CFLAGS) $(CPPFLAGS) -o $@ -c $<
 
 $(LIBUTF): $(LIBUTFOBJ)
-       $(AR) -r -c $@ $?
+       $(AR) rc $@ $?
        $(RANLIB) $@
 
 $(LIBUTIL): $(LIBUTILOBJ)
-       $(AR) -r -c $@ $?
+       $(AR) rc $@ $?
        $(RANLIB) $@
 
 install: all