@@ -1,7 +1,7 @@

 MODULEFLAGS = -fPIC -fno-stack-protector

 MODULEOBJS = dual_control.o

 MODULELIB = pam_dual_control.so

-

+UNAME_S := $(shell uname -s)

 .PHONY: all

 all: test dual_control.a

@@ -29,8 +29,15 @@ dual_control_test: dual_control_test.c $(MODULEOBJS)

 test: dual_control_test

 	@./dual_control_test > /dev/null

+

 .PHONY: install

 install: $(MODULEOBJS)

+ifeq ($(UNAME_S), Linux)

 	ld -x --shared -o @PAM_MODULE_DIRECTORY@/$(MODULELIB) $(MODULEOBJS)

+else

+	@echo installation recipe not known for $(UNAME_S)

+endif

+

+