fristkey2的专栏

# Check for the correct version of javajava_version := $(shell java -version 2>&1 |head -n 1 | grep '^java .*[ "]1\.6[\. "$$]')ifneq ($(shell java -version 2>&1 | grep -iopenjdk),)java_version :

ifneq ($(HOST_OS),windows)ifneq ($(HOST_OS)-$(HOST_ARCH),darwin-ppc)# check for a case sensitive file systemifneq (a,$(shell mkdir -p $(OUT_DIR) ; \               echo a > $(OUT_DIR)/casecheck