[xen staging] build: set policy filename on make command line

[patchbot@xxxxxxx]

commit c81e7efe2146c8f381fbdbb037b9d46866a6451e
Author:     Anthony PERARD <anthony.perard@xxxxxxxxxx>
AuthorDate: Wed Sep 8 14:40:00 2021 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Wed Sep 8 14:40:00 2021 +0200

    build: set policy filename on make command line
    
    In order to avoid flask/Makefile.common calling `make xenversion`, we
    override POLICY_FILENAME with the value we are going to use anyway.
    
    Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/xsm/flask/Makefile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/xen/xsm/flask/Makefile b/xen/xsm/flask/Makefile
index 637159ad82..af95697ed9 100644
--- a/xen/xsm/flask/Makefile
+++ b/xen/xsm/flask/Makefile
@@ -42,7 +42,9 @@ FLASK_BUILD_DIR := $(CURDIR)
 POLICY_SRC := $(FLASK_BUILD_DIR)/xenpolicy-$(XEN_FULLVERSION)
 
 policy.bin: FORCE
-       $(MAKE) -f $(XEN_ROOT)/tools/flask/policy/Makefile.common -C 
$(XEN_ROOT)/tools/flask/policy FLASK_BUILD_DIR=$(FLASK_BUILD_DIR)
+       $(MAKE) -f $(XEN_ROOT)/tools/flask/policy/Makefile.common \
+               -C $(XEN_ROOT)/tools/flask/policy \
+               FLASK_BUILD_DIR=$(FLASK_BUILD_DIR) POLICY_FILENAME=$(POLICY_SRC)
        cmp -s $(POLICY_SRC) $@ || cp $(POLICY_SRC) $@
 
 .PHONY: clean
--
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