[Xen-changelog] [xen master] tools: fix build dependency upon generated header(s)

[patchbot@xxxxxxx]

commit 1286abd45a554c42dae8f369be9177dd7bb9eed9
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Thu Jan 31 11:37:56 2019 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Thu Jan 31 11:37:56 2019 +0100

    tools: fix build dependency upon generated header(s)
    
    Commit fd35f32b4b ("tools/x86emul: Use struct cpuid_policy in the
    userspace test harnesses") didn't account for the dependencies of
    cpuid-autogen.h to potentially change between incremental builds.
    Putting the make invocation to produce the header together with the
    directory tree creation therefore does not work. Introduce a separate
    goal.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
    Release-acked-by: Juergen Gross <jgross@xxxxxxxx>
---
 tools/include/Makefile | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/tools/include/Makefile b/tools/include/Makefile
index 22df221daa..d693810053 100644
--- a/tools/include/Makefile
+++ b/tools/include/Makefile
@@ -4,8 +4,9 @@ include $(XEN_ROOT)/tools/Rules.mk
 # Relative to $(XEN_ROOT)/xen/xsm/flask
 FLASK_H_DEPEND := policy/initial_sids
 
-.PHONY: all build
-all build: xen-foreign xen/.dir xen-xsm/.dir
+.PHONY: all all-y build
+all build: all-y xen-foreign xen/.dir xen-xsm/.dir
+all-y:
 
 .PHONY: xen-foreign
 xen-foreign:
@@ -27,10 +28,12 @@ ifeq ($(CONFIG_X86),y)
        for f in $(filter-out %autogen.h,$(patsubst 
$(XEN_ROOT)/xen/include/xen/lib/x86/%,%,Makefile $(wildcard 
$(XEN_ROOT)/xen/include/xen/lib/x86/*.h))); do \
                ln -sf $(XEN_ROOT)/xen/include/xen/lib/x86/$$f xen/lib/x86/$$f; 
\
        done
-       $(MAKE) -C xen/lib/x86 all XEN_ROOT=$(XEN_ROOT)
 endif
        touch $@
 
+all-$(CONFIG_X86): xen/.dir
+       $(MAKE) -C xen/lib/x86 all XEN_ROOT=$(XEN_ROOT)
+
 # Not xen/xsm as that clashes with link to
 # $(XEN_ROOT)/xen/include/public/xsm above.
 xen-xsm/.dir: $(XEN_ROOT)/xen/xsm/flask/policy/mkflask.sh \
--
generated by git-patchbot for /home/xen/git/xen.git#master

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