Llvm submodule (#3108)

* Move the versions.mk infrastructure to scripts/submodules so it can be used elsewhere too.

* Add a conditional submodule for llvm.

* Fix commit messages emitted by the bump- targets.

* Use a anonymous git url for llvm.

1 files changed, 27 insertions, 0 deletions

diff --git a/llvm/Makefile.am b/llvm/Makefile.am
new file mode 100644
index 00000000000..e380f2bebf7
--- /dev/null
+++ b/llvm/Makefile.am
@@ -0,0 +1,27 @@
+#
+# Conditional submodule for llvm
+#
+# make reset-llvm will checkout a version of llvm which is suitable for this version of mono
+# into $top_srcdir/llvm/llvm.
+#
+
+LLVM_PATH=llvm
+
+include $(top_srcdir)/scripts/submodules/versions.mk
+
+$(eval $(call ValidateVersionTemplate,llvm,LLVM))
+
+# Bump the given submodule to the revision given by the REV make variable
+# If COMMIT is 1, commit the change
+bump-llvm: __bump-version-llvm
+
+# Bump the given submodule to the branch given by the BRANCH/REMOTE_BRANCH make variables
+# If COMMIT is 1, commit the change
+bump-branch-llvm: __bump-branch-llvm
+
+# Bump the given submodule to its current GIT version
+# If COMMIT is 1, commit the change
+bump-current-llvm: __bump-current-version-llvm
+
+clean-local:
+	$(RM) -r $(LLVM_PATH)