We don't need to assume the OpenJDK (i.e. for Mac builds).
Change-Id: I1ac1856813045c7b1478dee6b08ad7b49300e4d7
ifneq ($(EXPERIMENTAL_USE_JAVA8),)
required_version := "1.8.x"
required_javac_version := "1.8"
-java_version := $(shell echo '$(java_version_str)' | grep 'openjdk .*[ "]1\.8[\. "$$]')
+java_version := $(shell echo '$(java_version_str)' | grep '[ "]1\.8[\. "$$]')
javac_version := $(shell echo '$(javac_version_str)' | grep '[ "]1\.8[\. "$$]')
else # default
required_version := "1.7.x"