53 lines
1.7 KiB
Markdown
53 lines
1.7 KiB
Markdown
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# Is redo compatible with autoconf?
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Yes. You don't have to do anything special, other than the above note about
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declaring dependencies on config.h, which is no worse than what you would
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have to do with make.
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# Is redo compatible with automake?
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Hells no. You can thank me later. But see next question.
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# Is redo compatible with make?
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Yes. If you have an existing Makefile (for example, in one of your
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subprojects), you can just call make from a .do script to build that
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subproject.
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In a file called myproject.stamp.do:
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redo-ifchange $(find myproject -name '*.[ch]')
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make -C myproject all
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So, to amend our answer to the previous question, you *can* use
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automake-generated Makefiles as part of your redo-based project.
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# Is redo -j compatible with make -j?
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Yes! redo implements the same jobserver protocol as GNU make, which means
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that redo running under make -j, or make running under redo -j, will do the
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right thing. Thus, it's safe to mix-and-match redo and make in a recursive
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build system.
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Just make sure you declare your dependencies correctly;
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redo won't know all the specific dependencies included in
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your Makefile, and make won't know your redo dependencies,
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of course.
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One way of cheating is to just have your make.do script
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depend on *all* the source files of a subproject, like
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this:
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make -C subproject all
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find subproject -name '*.[ch]' | xargs redo-ifchange
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Now if any of the .c or .h files in subproject are changed,
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your make.do will run, which calls into the subproject to
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rebuild anything that might be needed. Worst case, if the
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dependencies are too generous, we end up calling 'make all'
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more often than necessary. But 'make all' probably runs
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pretty fast when there's nothing to do, so that's not so
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bad.
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