The loop variable is 'l', not 'i'.

engines/Makefile.ssl

@@ -92,10 +92,10 @@ install:
 	@if [ -n "$(SHARED_LIBS)" ]; then \
 		set -e; \
 		for l in $(LIBNAMES); do \
-			( echo installing $$i; \
-			  cp lib$$i.so $(INSTALL_PREFIX)$(OPENSSLDIR)/engines/lib$$i.so.new; \
-			  chmod 555 $(INSTALL_PREFIX)$(OPENSSLDIR)/engines/lib$$i.so.new; \
-			  mv $(INSTALL_PREFIX)$(OPENSSLDIR)/engines/lib$$i.so.new $(INSTALL_PREFIX)$(OPENSSLDIR)/engines/lib$$i.so ); \
+			( echo installing $$l; \
+			  cp lib$$l.so $(INSTALL_PREFIX)$(OPENSSLDIR)/engines/lib$$l.so.new; \
+			  chmod 555 $(INSTALL_PREFIX)$(OPENSSLDIR)/engines/lib$$l.so.new; \
+			  mv $(INSTALL_PREFIX)$(OPENSSLDIR)/engines/lib$$l.so.new $(INSTALL_PREFIX)$(OPENSSLDIR)/engines/lib$$l.so ); \
 		done; \
 	fi