Add support for building JARs from Java sources

1 files changed, 29 insertions, 0 deletions

diff --git a/mk/jars.mk b/mk/jars.mk
new file mode 100644
index 000000000000..5d459c0a9d70
--- /dev/null
+++ b/mk/jars.mk
@@ -0,0 +1,29 @@
+define build-jar =
+  $(1)_NAME ?= $(1)
+
+  _d := $$(strip $$($(1)_DIR))
+
+  $(1)_PATH := $$(_d)/$$($(1)_NAME).jar
+
+  $(1)_TMPDIR := $$(_d)/.$$($(1)_NAME).jar.tmp
+
+  $$($(1)_PATH): $$($(1)_SOURCES)
+	@rm -rf $$($(1)_TMPDIR)
+	@mkdir -p $$($(1)_TMPDIR)
+	$(QUIET) javac $(GLOBAL_JAVACFLAGS) $$($(1)_JAVACFLAGS) -d $$($(1)_TMPDIR) $$($(1)_SOURCES)
+	$(QUIET) jar cf $$($(1)_PATH) -C $$($(1)_TMPDIR) .
+	@rm -rf $$($(1)_TMPDIR)
+
+  $(1)_INSTALL_DIR ?= $$(libdir)/java
+
+  $(1)_INSTALL_PATH := $$($(1)_INSTALL_DIR)/$$($(1)_NAME).jar
+
+  $$(eval $$(call install-file-as, $$($(1)_PATH), $$($(1)_INSTALL_PATH), 0644))
+
+  install: $$($(1)_INSTALL_PATH)
+
+  jars_list += $$($(1)_PATH)
+
+  clean_files += $$($(1)_PATH)
+
+endef