Makefile中的Heredoc? [英] Heredoc in a Makefile?

问题描述

这有可能吗?

更新:我需要这样做，因为我是根据动态和静态数据创建文件的.

Update: I need this because I create a file both from dynamic and static data.

用例:我有一个测试目录.每个C文件都生成一个测试可执行文件.与

Use case: I have a test directory. Each C file produces a test executable. With

SRCS = $(wildcard [a-z]*.c)

我可以根据需要添加新测试，并进行查找，编译，运行和验证这些新测试.我也使用git.我希望.gitignore包含可执行文件.

I can add new tests as needed and make will find the new tests, compile, run and valgrind them. I also use git. I would like .gitignoreto include the executables.

在那里.

推荐答案

另一个GNU Make解决方案.

Another GNU Make solution.

您可以使用define和export命令如下进行操作:

You can do it using the define and export commands as follows:

define GITIGNOREDS
*.o
depend
endef

SRCS = $(wildcard [a-z]*.c)
EXES = $(SRCS:.c=)


export GITIGNOREDS
.gitignore: $(SRCS)
    echo $(EXES) | sed 's/ /\n/g' > $@
    echo "$$GITIGNOREDS" >> $@

不过，您必须注意在define块内进行扩展(即$(x)).

You have to be careful of make expansions (i.e. $(x)) inside the define block though.

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