commit 2428bfeb88376de6e0d2487040d9abdfe690e8b3
author Neil Fuller <nfuller@google.com> Fri Jan 15 19:41:26 2016 -0800
committer Neil Fuller <nfuller@google.com> Wed Feb 03 17:08:39 2016 +0000
tree fecae9f73fd4d4a6cfad81ccb7954e09dd0cf65a
parent 655dd3ea769c8482821cdda7b0eec80c5a500b17

Allow java targets to support 1.8 source / target

This change enables build rules to specify:

LOCAL_JAVA_LANGUAGE_VERSION := 1.8

to enable -source 1.8 -target 1.8 for javac and
equivalent flags for Jack.

Bug: 26753820
(cherry-picked from commit cdfbe4a8522b9a13ffe6ac1f826a1d6760f87d60)

Change-Id: I361c99dd599e7b4a041f02c9562e461da2b0502e

core/java_common.mk

diff --git a/core/java_common.mk b/core/java_common.mk
index aee3193..34c67dc 100644
--- a/core/java_common.mk
+++ b/core/java_common.mk
@@ -1,6 +1,14 @@
 # Common to host and target Java modules.
 
 ###########################################################
+## Java version
+###########################################################
+ifeq (,$(LOCAL_JAVA_LANGUAGE_VERSION))
+  LOCAL_JAVA_LANGUAGE_VERSION := 1.7
+endif
+LOCAL_JAVACFLAGS += -source $(LOCAL_JAVA_LANGUAGE_VERSION) -target $(LOCAL_JAVA_LANGUAGE_VERSION)
+
+###########################################################
 ## .proto files: Compile proto files to .java
 ###########################################################
 proto_sources := $(filter %.proto,$(LOCAL_SRC_FILES))
@@ -265,6 +273,8 @@
 ifdef LOCAL_JACK_ENABLED
 ifdef need_compile_java
 
+LOCAL_JACK_FLAGS += -D jack.java.source.version=$(LOCAL_JAVA_LANGUAGE_VERSION)
+
 full_static_jack_libs := \
     $(foreach lib,$(LOCAL_STATIC_JAVA_LIBRARIES), \
       $(call intermediates-dir-for, \