https://github.com/pbiering/ipv6calc/pull/49
diff --git a/databases/lib/Makefile.in b/databases/lib/Makefile.in
index ed3c55d..a3846a7 100644
--- a/databases/lib/Makefile.in
+++ b/databases/lib/Makefile.in
@@ -26,7 +26,7 @@ else
 endif
 
 CC	= @CC@
-AR	= ar
+AR	?= ar
 RANLIB	= @RANLIB@
 
 OBJS	=	libipv6calc_db_wrapper.o \
diff --git a/lib/Makefile.in b/lib/Makefile.in
index 827e3ae..846b3d1 100644
--- a/lib/Makefile.in
+++ b/lib/Makefile.in
@@ -26,7 +26,7 @@ endif
 SHARED_LIBRARY=@SHARED_LIBRARY@
 
 CC	= @CC@
-AR	= ar
+AR	?= ar
 RANLIB	= @RANLIB@
 
 OBJS	=	libipv6calc.o  \