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第一次执行make -s test报错及其解决办法，mv: cannot stat '/ucl': No such file or directory #13

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oxygen236 opened this issue Apr 22, 2023 · 0 comments
Open

第一次执行make -s test报错及其解决办法，mv: cannot stat '/ucl': No such file or directory #13

oxygen236 opened this issue Apr 22, 2023 · 0 comments

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@oxygen236
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第一次执行make -s test报错及其解决办法，mv: cannot stat '/ucl': No such file or directory

在书（C 编译器剖析，邹昌伟）的第 23 页中第一次执行make -s test时，报错内容如下：

[oxygen@****** ucc]$ make -s test
(exprchk.c,314):(output.c,70):warning:Too many arguments
(exprchk.c,314):(output.c,86):warning:Too many arguments
mv: cannot stat '/ucl': No such file or directory
make[1]: *** [Makefile:21: test] Error 1
make: *** [Makefile:25: test] Error 2

问题原因：多级 makefile 及参数传递问题，ucc/Makefile 文件中的变量 $(UCCDIR) 没有传递到 ucc/ucl/Makefile 中，导致报错。
解决办法：将 ucc/Makefile 文件的UCCDIR定义前加 export

正确的 ucc/Makefile 文件如下：

#UCCDIR = /home/iron/bin
cur_mkfile := $(abspath $(lastword $(MAKEFILE_LIST)))
export UCCDIR = $(patsubst %/, %, $(dir $(cur_mkfile)))/bin

修改后重新执行，结果如下

[oxygen@****** ucc]$ make -s test
(exprchk.c,314):(output.c,70):warning:Too many arguments
(exprchk.c,314):(output.c,86):warning:Too many arguments
(exprchk.c,314):(output.c,70):warning:Too many arguments
(exprchk.c,314):(output.c,86):warning:Too many arguments

可能对你有帮助的 makefile 相关代码：

1.打印当前Makefile的路径：

$(warning Makefile path: $(CURDIR)/$(lastword $(MAKEFILE_LIST)))

2.在控制台输出变量 $(UCCDIR)/ucl 的值

$(info $(UCCDIR)/ucl)

希望能帮助到有需要的人！
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