Makefile，Regex和多个依赖项 [英] Makefile, Regex and multiple dependencies

问题描述

假定以下文件与makefile位于同一目录中:

Assume the following files are in the same directory as the makefile:

01.1.dot
01.2.dot
02.1.dot
03.1.dot
03.2.dot
03.3.dot

这意味着我们拥有格式为[0-9] [0-9].[0-9] .dot

That means we have files of the form [0-9][0-9].[0-9].dot

此外，makefile包含以下目标:

Furthermore, the makefile contains the following target:

%.dot.tex: %.dot
    dot2tex <...>

现在，我想创建一个目标，该目标依赖于格式为[0-9] [0-9] .tex的文件，并且它们还应该依赖于格式为[0-9] [0-9]的所有文件].*.dot.tex，以便前两位数字匹配.例如，make 03.pdf应该依赖于03.tex，03.1.dot.tex，03.2.dot.tex和03.3.dot.tex.我提出了以下建议:

Now I would like to create a target which depend on files of the form [0-9][0-9].tex and they should also depend on all files of the form [0-9][0-9].*.dot.tex, such that the first two digits match. For example, make 03.pdf should depend on 03.tex, 03.1.dot.tex, 03.2.dot.tex and 03.3.dot.tex. I came up with the following:

%.pdf: %.tex $(addsuffix .tex,$(wildcard %.*.dot))
        @echo $?
        pdflatex <...>

但是，未在通配符函数中评估百分比.有人知道如何解决这个问题吗?

However, the percentage is not evaluated in the wildcard-function. Does someone have an idea how to solve this?

推荐答案

函数是在模式匹配规则之前应用的，因此您不能在glob中使用％.

Functions are applied before pattern matching rules, so you cannot use % in a glob.

可能有更好的解决方案，但我想出了:

There is probably a better solution, but I came up with:

.dep-%.pdf: %.tex
    @bash -c 'shopt -s nullglob; for x in $*.*.dot; do \
      echo "$*.pdf: $$x.tex"; \
    done' > $@
PDFS := $(patsubst %.tex,%.pdf,$(wildcard [0-9][0-9].tex))
include $(patsubst %,.dep-%,$(PDFS))
%.pdf: %.tex | .dep-%.pdf

只要您不添加或创建X.*.dot文件而不修改X.tex文件，这应该可以工作.

As long as you don't add or create X.*.dot files without also modifying X.tex files, this should work.

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