makefile: fix cross-compilation

diff --git a/makefile b/makefile
index 1c7b1a5749e87f5cccdf254b48cd79d6feeedd8c..cb748482aa62ef593ac45d288bd9a6892fe6adb2 100644 (file)
--- a/makefile
+++ b/makefile
@@ -131,7 +131,7 @@ ctgrind: ctgrind.out
 
 # Monocypher libraries
 lib/libmonocypher.a: lib/monocypher.o $(LINK_ED25519)
-       ar cr $@ $^
+       $(AR) cr $@ $^
 lib/libmonocypher.so: lib/$(SONAME)
        @mkdir -p $(@D)
        ln -sf `basename $<` $@