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

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Mon, Apr 14, 2025 at 04:17:14PM +0200, Anthony PERARD wrote:
> 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.

Oh, I see, yes, test-rangeset.o wasn't dependent on the generated
files.

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

Reviewed-by: Roger Pau Monné <roger.pau@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)

This include is likely also needed by vpci/Makefile?

Thanks, Roger.