build: Make sure that DESTDIR is set

In the case where XEN_PYTHON_NATIVE_INSTALL is in effect,
if DESTDIR is not set then the install will go into a relative
directory rather than under the default prefix (usually /usr).

An alternate solution would be to update the fragments
that do the python install to use $(DESTDIR)/ instead of
$(DESTDIR). This is not an incredible burden as there
are only two such fragments in the tree. However, it
seems prone to error as new makefiles are created
in the future.

Signed-Off-By: Horms <horms@verge.net.au>

diff --git a/Config.mk b/Config.mk
index 7cea3953c5ddf1b8fcf099d789ecb2d08e7ca355..2b15addd12e762508512cbe2629d41e94689cdad 100644 (file)
--- a/Config.mk
+++ b/Config.mk
@@ -24,6 +24,7 @@ OBJCOPY    = $(CROSS_COMPILE)objcopy
 OBJDUMP    = $(CROSS_COMPILE)objdump
 
 DISTDIR     ?= $(XEN_ROOT)/dist
+DESTDIR     ?= /
 
 INSTALL      = install
 INSTALL_DIR  = $(INSTALL) -d -m0755