[BUILD] Support cloning Linux tree from a git repository.

Integrate the linux-2.6-tip tree as linux-2.6-tip-latest

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>

diff --git a/buildconfigs/mk.linux-2.6-tip-latest b/buildconfigs/mk.linux-2.6-tip-latest
new file mode 100644 (file)
index 0000000..78a9ecb
--- /dev/null
+++ b/buildconfigs/mk.linux-2.6-tip-latest
@@ -0,0 +1,14 @@
+XEN_LINUX_SOURCE ?= git-clone
+LINUX_VER ?= 2.6-x86-latest
+
+IMAGE_TARGET ?= bzImage vmlinux
+
+XEN_LINUX_CONFIG_UPDATE := buildconfigs/enable-xen-config
+
+XEN_LINUX_GIT_URL ?= git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip.git
+XEN_LINUX_GIT_REMOTENAME ?= x86
+XEN_LINUX_GIT_REMOTEBRANCH ?= auto-latest
+
+EXTRAVERSION ?=
+
+include buildconfigs/mk.linux-2.6-common

diff --git a/buildconfigs/src.git-clone b/buildconfigs/src.git-clone
new file mode 100644 (file)
index 0000000..722d45a
--- /dev/null
+++ b/buildconfigs/src.git-clone
@@ -0,0 +1,60 @@
+# Mercurial
+GIT ?= git
+
+LINUX_SRCDIR ?= linux-$(LINUX_VER).git
+
+# The URL of the remote GIT repository
+ifeq ($(XEN_LINUX_GIT_URL),)
+.ERROR: XEN_LINUX_GIT_URL not specified
+endif
+
+# The name to use for the remote repository
+XEN_LINUX_GIT_REMOTENAME ?= origin
+
+# The branch in the remote repository
+ifeq ($(XEN_LINUX_GIT_REMOTEBRANCH),)
+.ERROR: XEN_LINUX_GIT_REMOTEBRANCH not specified
+endif
+
+XEN_LINUX_GIT_LOCALBRANCH ?= master
+
+# Set XEN_LINUX_GITREV to update to a particlar revision.
+XEN_LINUX_GITREV  ?= 
+
+$(LINUX_SRCDIR)/.valid-src: $(__XEN_LINUX_UPDATE)
+       @set -e ; if [ -d $(LINUX_SRCDIR) ] && [ ! -d $(GIT_DIR) ] ; then \
+           echo "$(LINUX_SRCDIR) exists but is not a git repository." 1>&2 ; \
+           false ; \
+       fi
+
+       @set -e ; if [ ! -e $(LINUX_SRCDIR)/.git ] ; then \
+           mkdir $(LINUX_SRCDIR) ; \
+           cd $(LINUX_SRCDIR) ; \
+           $(GIT) init-db ; \
+       fi
+
+       @set -e ; cd $(LINUX_SRCDIR) ; \
+       if ! $(GIT) remote | grep -q $(XEN_LINUX_GIT_REMOTENAME) ; then \
+           echo "Adding remote git repository \`$(XEN_LINUX_GIT_URL)' as \`$(XEN_LINUX_GIT_REMOTENAME)'" ; \
+           $(GIT) remote add $(XEN_LINUX_GIT_REMOTENAME) $(XEN_LINUX_GIT_URL) ; \
+       fi
+
+       @echo "Updating remote \`$(XEN_LINUX_GIT_REMOTENAME)'"
+       @cd $(LINUX_SRCDIR) && $(GIT) fetch $(XEN_LINUX_GIT_REMOTENAME)
+
+       @set -e ; cd $(LINUX_SRCDIR) ; \
+       if ! $(GIT) branch -l | grep -q $(XEN_LINUX_GIT_LOCALBRANCH) ; then \
+           $(GIT) branch --track $(XEN_LINUX_GIT_LOCALBRANCH) \
+               $(XEN_LINUX_GIT_REMOTENAME)/$(XEN_LINUX_GIT_REMOTEBRANCH) ; \
+           $(GIT) checkout ; \
+       fi
+
+       @ set -e ; cd $(LINUX_SRCDIR) ; \
+       if [ -n "$(XEN_LINUX_GITREV)" ] ; then \
+           echo "Updating $(LINUX_SRCDIR) to revision \'$(XEN_LINUX_GITREV)'." ; \
+           $(GIT) reset --hard $(XEN_LINUX_GITREV) ; \
+       else \
+           $(GIT) reset --hard $(XEN_LINUX_GIT_REMOTENAME)/$(XEN_LINUX_GIT_REMOTEBRANCH) ; \
+       fi
+
+       touch $@