[XEN PATCH v9 07/30] build: rework cloc recipe

[Anthony PERARD <anthony.perard@xxxxxxxxxx>]

We are going to make other modifications to the cloc recipe, so this
patch prepare make those modification easier.

We replace the Makefile meta programming by just a shell script which
should be easier to read and is actually faster to execute.

Instead of looking for files in "$(BASEDIR)", we use "." which is give
the same result overall. We also avoid the need for a temporary file
as cloc can read the list of files from stdin.

No change intended to the output of `cloc`.

Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---

Notes:
    v9:
    - acked
    
    v8:
    - rework cloc patch, move it ahead of problematic changes
      this is only a convertion to shell script with a single other change.

 xen/Makefile | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/xen/Makefile b/xen/Makefile
index d953dc50ac6a..ec24856a5d46 100644
--- a/xen/Makefile
+++ b/xen/Makefile
@@ -473,14 +473,12 @@ _MAP:
 
 .PHONY: cloc
 cloc:
-       $(eval tmpfile := $(shell mktemp))
-       $(foreach f, $(shell find $(BASEDIR) -name *.o.d), \
-               $(eval path := $(dir $(f))) \
-               $(eval names := $(shell grep -o "[a-zA-Z0-9_/-]*\.[cS]" $(f))) \
-               $(foreach sf, $(names), \
-                       $(shell if test -f $(path)/$(sf) ; then echo 
$(path)/$(sf) >> $(tmpfile); fi;)))
-       cloc --list-file=$(tmpfile)
-       rm $(tmpfile)
+       find . -name '*.o.d' | while read f; do \
+           for sf in $$(grep -o "[a-zA-Z0-9_/-]*\.[cS]" $$f); do \
+               sf="$$(dirname $$f)/$$sf"; \
+               test -f "$$sf" && echo "$$sf"; \
+           done; \
+       done | cloc --list-file=-
 
 endif #config-build
 
-- 
Anthony PERARD