makefile define 问题

Question

bars="chinna"
ifndef twolines
else
        @echo $(bars)
endif
all:
        $(call twolines,$(bars))
.PHONY:clean
clean:
        rm $(bars)

我个人写了个这样的makefile，命令行是tab缩进的，想测试下行不行，make之后出现语法错误：

maketest/mmmm>make
"makefile", line 2: make: 1254-055 Dependency line needs colon or double colon operator.
"makefile", line 3: make: 1254-055 Dependency line needs colon or double colon operator.
"makefile", line 5: make: 1254-055 Dependency line needs colon or double colon operator.
make: 1254-058 Fatal errors encountered -- cannot continue.
我通过谷歌搜索解决问题很久，依然没有。求教～

Answer 1

可以试试 xmake，简单高效，上手容易，基于lua语法的现代化跨平台c/c++构建支持 http://xmake.io/cn