Make sure to use $(MAKE) everywhere instead of make.
Part of PR 181

ssl/Makefile.ssl

diff --git a/ssl/Makefile.ssl b/ssl/Makefile.ssl
index c75956f..3a8bd9b 100644
--- a/ssl/Makefile.ssl
+++ b/ssl/Makefile.ssl
@@ -65,7 +65,7 @@
 
 shared:
 	if [ -n "$(SHARED_LIBS)" ]; then \
-		(cd ..; make $(SHARED_LIB)); \
+		(cd ..; $(MAKE) $(SHARED_LIB)); \
 	fi
 
 files: