makefile 输出

在makefile中打印输出信息的方法是：$(warning xxxxx)或者$(error xxxxx)

输出变量方式为：$(warning  $(XXX))

root@bogon runtime]# grep CLHCMD -rn *
arch/amd64-options.mk:28:CLHCMD := cloud-hypervisor
arch/arm64-options.mk:21:CLHCMD := cloud-hypervisor
Makefile:141:CLHPATH := $(CLHBINDIR)/$(CLHCMD)
Makefile:142:CLHVALIDHYPERVISORPATHS := ["$(CLHBINDIR)/$(CLHCMD)"]
Makefile:264:$(warning  $(CLHCMD))
Makefile:265:ifneq (,$(CLHCMD))
Makefile.2.0:142:CLHPATH := $(CLHBINDIR)/$(CLHCMD)
Makefile.2.0:143:CLHVALIDHYPERVISORPATHS := ["$(CLHBINDIR)/$(CLHCMD)"]
Makefile.2.0:266:ifneq (,$(CLHCMD))

[root@bogon runtime]# grep options.mk -rn *
Makefile:35:ARCH_FILE_SUFFIX = -options.mk
Makefile.2.0:35:ARCH_FILE_SUFFIX = -options.mk
[root@bogon runtime]#