[XEN PATCH] tools/tests: Fix newly introduced Makefile

[Anthony PERARD <anthony@xxxxxxxxxxxxxx>]

From: Anthony PERARD <anthony.perard@xxxxxxxxxx>

Fix few issue with this new directory:
- clean generated files
- and ignore those generated files
- include the dependency files generated by `gcc`.
- rework prerequisites:
  "test-rangeset.o" also needs the generated files "list.h" and
  "rangeset.h". Technically, both only needs "harness.h" which needs
  the generated headers, but that's a bit simpler and the previous
  point will add the dependency on "harness.h" automatically.

This last point fix an issue where `make` might decide to build
"test-rangeset.o" before the other files are ready.

Fixes: 7bf777b42cad ("tootls/tests: introduce unit tests for rangesets")
Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
---

Make doesn't needs the *.h to generated the .c. So removing that
prerequisite means make can generate all 3 at the same time.
---
 tools/tests/rangeset/.gitignore | 4 ++++
 tools/tests/rangeset/Makefile   | 8 ++++++--
 2 files changed, 10 insertions(+), 2 deletions(-)
 create mode 100644 tools/tests/rangeset/.gitignore

diff --git a/tools/tests/rangeset/.gitignore b/tools/tests/rangeset/.gitignore
new file mode 100644
index 0000000000..cdeb778535
--- /dev/null
+++ b/tools/tests/rangeset/.gitignore
@@ -0,0 +1,4 @@
+/list.h
+/rangeset.c
+/rangeset.h
+/test-rangeset
diff --git a/tools/tests/rangeset/Makefile b/tools/tests/rangeset/Makefile
index 70076eff34..3dafcbd054 100644
--- a/tools/tests/rangeset/Makefile
+++ b/tools/tests/rangeset/Makefile
@@ -12,7 +12,7 @@ run: $(TARGET)
 
 .PHONY: clean
 clean:
-       $(RM) -- *.o $(TARGET) $(DEPS_RM)
+       $(RM) -- *.o $(TARGET) $(DEPS_RM) list.h rangeset.h rangeset.c
 
 .PHONY: distclean
 distclean: clean
@@ -32,7 +32,7 @@ rangeset.h: $(XEN_ROOT)/xen/include/xen/rangeset.h
 list.h rangeset.h:
        sed -e '/#include/d' <$< >$@
 
-rangeset.c: $(XEN_ROOT)/xen/common/rangeset.c list.h rangeset.h
+rangeset.c: $(XEN_ROOT)/xen/common/rangeset.c
        # Remove includes and add the test harness header
        sed -e '/#include/d' -e '1s/^/#include "harness.h"/' <$< >$@
 
@@ -42,5 +42,9 @@ CFLAGS += $(CFLAGS_xeninclude)
 
 LDFLAGS += $(APPEND_LDFLAGS)
 
+test-rangeset.o rangeset.o: list.h rangeset.h
+
 test-rangeset: rangeset.o test-rangeset.o
        $(CC) $^ -o $@ $(LDFLAGS)
+
+-include $(DEPS_INCLUDE)
-- 
Anthony PERARD