[PATCH 2/4] xen/test/livepatch: Regularise Makefiles

[Ian Jackson <ian.jackson@eu.citrix.com>]

In xen/test/livepatch/Makefile:

  Provide a `build' target, as most of the
  subdir-invoking Makefiles elsewhere expect.

In xen/test/Makefile:

  Replace the two open-coded targets with a generalised pattern rule
  which descends into each of SUBDIRS.  This allows `install' to work
  too (it is already supported by xen/test/livepatch/Makefile).

  Provide an explicit default target of `tests', and an `all' target
  (which is conventional).

  Suppress entry into the xen/test/livepatch subdir when we are
  building for i386, since the 32-bit hypervisor is not supported any
  more and we can't build livepatches for it either.

After this, the xen/test subdirectory is somewhere were make can be
invoked in the way which is conventional for xen.git/xen/ subdirs.

None of this is yet invoked from the top-level Makefile.

CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
---
 xen/test/Makefile           | 18 ++++++++++++------
 xen/test/livepatch/Makefile |  2 +-
 2 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/xen/test/Makefile b/xen/test/Makefile
index d91b319..aa1a23b 100644
--- a/xen/test/Makefile
+++ b/xen/test/Makefile
@@ -1,7 +1,13 @@
-.PHONY: tests
-tests:
-	$(MAKE) -f $(BASEDIR)/Rules.mk -C livepatch livepatch
 
-.PHONY: clean
-clean::
-	$(MAKE) -f $(BASEDIR)/Rules.mk -C livepatch clean
+tests all: build
+
+
+ifneq ($(XEN_TARGET_ARCH),x86_32)
+# Xen 32-bit x86 hypervisor no longer supported, so has no test livepatches
+SUBDIRS += livepatch
+endif
+
+%:
+	set -e; for s in $(SUBDIRS); do \
+		$(MAKE) -f $(BASEDIR)/Rules.mk -C $$s $*; \
+	done
diff --git a/xen/test/livepatch/Makefile b/xen/test/livepatch/Makefile
index 76d65cf..6831383d 100644
--- a/xen/test/livepatch/Makefile
+++ b/xen/test/livepatch/Makefile
@@ -27,7 +27,7 @@ LIVEPATCHES += $(LIVEPATCH_NOP)
 
 LIVEPATCH_DEBUG_DIR ?= $(DEBUG_DIR)/xen-livepatch
 
-default: livepatch
+build default: livepatch
 
 install: livepatch
 	$(INSTALL_DIR) $(DESTDIR)$(LIVEPATCH_DEBUG_DIR)
-- 
2.1.4


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