tests/cpu-policy: Rework Makefile

In particular, fill in the install/uninstall rules so this test can be
packaged to be automated sensibly.

Rework TARGET-y to be TARGETS, drop redundant -f's for $(RM), drop the
unconditional -O3 and use the default instead, and drop CFLAGS from the link
line but honour APPEND_LDFLAGS.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>

tools/tests/cpu-policy/Makefile

@@ -1,21 +1,19 @@
 XEN_ROOT = $(CURDIR)/../../..
 include $(XEN_ROOT)/tools/Rules.mk
 
-TARGET-y := test-cpu-policy
+TARGETS :=
 
 # For brevity, these tests make extensive use of designated initialisers in
 # anonymous unions, but GCCs older than 4.6 can't cope.  Ignore the test in
 # this case.
-ifneq ($(clang),y)
-TARGET-$(call cc-ver,$(CC),lt,0x040600) :=
-endif
-
-ifeq ($(TARGET-y),)
+ifneq ($(gcc)$(call cc-ver,$(CC),lt,0x040600),yy)
+TARGETS += test-cpu-policy
+else
 $(warning Test harness not built, use newer compiler than "$(CC)" (version $(shell $(CC) -dumpversion)))
 endif
 
 .PHONY: all
-all: $(TARGET-y)
+all: $(TARGETS)
 
 .PHONY: run
 run: $(TARGET-y)
@@ -23,23 +21,32 @@ run: $(TARGET-y)
 
 .PHONY: clean
 clean:
-	$(RM) -f -- *.o .*.d .*.d2 test-cpu-policy
+	$(RM) -- *.o $(TARGETS) $(DEPS_RM)
 
 .PHONY: distclean
 distclean: clean
-	$(RM) -f -- *~
+	$(RM) -- *~
 
 .PHONY: install
 install: all
+	$(INSTALL_DIR) $(DESTDIR)$(LIBEXEC_BIN)
+	$(if $(TARGETS),$(INSTALL_PROG) $(TARGETS) $(DESTDIR)$(LIBEXEC_BIN))
 
 .PHONY: uninstall
+uninstall:
+	$(RM) -- $(addprefix $(DESTDIR)$(LIBEXEC_BIN)/,$(TARGETS))
 
-CFLAGS += -Werror $(CFLAGS_xeninclude) -D__XEN_TOOLS__ -O3
+CFLAGS += -Werror -D__XEN_TOOLS__
+CFLAGS += $(CFLAGS_xeninclude)
 CFLAGS += $(APPEND_CFLAGS)
 
+LDFLAGS += $(APPEND_LDFLAGS)
+
 vpath %.c ../../../xen/lib/x86
 
+%.o: Makefile
+
 test-cpu-policy: test-cpu-policy.o msr.o cpuid.o policy.o
-	$(CC) $(CFLAGS) $^ -o $@
+	$(CC) $^ -o $@ $(LDFLAGS)
 
 -include $(DEPS_INCLUDE)