Merge "Bring main.mk in sync with master."

endif

ifeq ($(requires_openjdk), true)

# The user asked for java7 openjdk, so check that the host

# java version is really openjdk

ifeq ($(shell java -version 2>&1 | grep -i openjdk),)

$(info ************************************************************)

$(info You are attempting to build with an unsupported JDK.)

# EXPERIMENTAL_USE_JAVA7 is set, 1.6 otherwise.

ifneq ($(EXPERIMENTAL_USE_JAVA7),)

required_version := "1.7.x"

required_javac_version := "1.7"

java_version := $(shell java -version 2>&1 | grep '^java .*[ "]1\.7[\. "$$]' | head -n 1)

javac_version := $(shell javac -version 2>&1 | grep '[ "]1\.7[\. "$$]' | head -n 1 )

else # if EXPERIMENTAL_USE_JAVA7

required_version := "1.6.x"

required_javac_version := "1.6"

java_version := $(shell java -version 2>&1 | grep '^java .*[ "]1\.6[\. "$$]' | head -n 1)

javac_version := $(shell javac -version 2>&1 | grep '[ "]1\.6[\. "$$]' | head -n 1)

endif # if EXPERIMENTAL_USE_JAVA7

$(info of javac.)

$(info $(space))

$(info Your version is: $(shell javac -version 2>&1 | grep '^javac' | head -n 1).)

$(info The required version is: $(required_java_version))

$(info The required version is: $(required_javac_version))

$(info $(space))

$(info Please follow the machine setup instructions at)

$(info $(space)$(space)$(space)$(space)https://source.android.com/source/download.html)