GNU Make and VPATH

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sTix

GNU Make and VPATH

Posted on: 2022/2/10 20:53 #1

Just popping in

Has anyone else run into problems using VPATH when building with the GNU make on OS4Depot (make-bin.lha uploaded by Steven Solie)?

To me it seems like VPATH is totally ignored. Both make and gmake behave in the same way.

trgswe

Re: GNU Make and VPATH

Posted on: 2022/2/10 21:03 #2

Just popping in

@sTix

have you tried both unix and amigaos paths, most likely amigaos, one of them should work (and assuming you are running in abc-shell, I thinka). I don't think gmake, make should differ in that part.

sTix

Re: GNU Make and VPATH

Posted on: 2022/2/10 21:10 #3

Just popping in

@trgswe

I tried both I'm afraid. But I just noticed that 3.81 included in the latest SDK works the way it should. Looks like something broke when going from 3.81 to 3.82.

trgswe

Re: GNU Make and VPATH

Posted on: 2022/2/11 14:31 #4

Just popping in

@sTix

noticed that VPATH can also be 'used/called' as vpath everything else is the same.

sTix

Re: GNU Make and VPATH

Posted on: 2022/2/11 14:45 #5

Just popping in

@trgswe

Yes, vpath is more specific, using pattern rules, but the result is the same; it's ignored by 3.82 but works with 3.81.

walkero

Re: GNU Make and VPATH

Posted on: 2022/2/11 15:47 #6

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@sTix
Is there a way for me to reproduce it with a simple example, or it has to do with specific projects and depends on their complexity? I'd like to investigate the reasons behind this issue.

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sTix

Re: GNU Make and VPATH

Posted on: 2022/2/11 20:00 #7

Just popping in

@walkero

It's pretty simple to reproduce.

Create a directory structure like this:

Quote:

7.RAM Disk:> list
src Dir ----rwed Today 20:48:13
build Dir ----rwed Today 20:48:33

In 'src' create something like this:

Quote:

7.RAM Disk:> type src/input
test

In 'build' create a Makefile like this:

Quote:

7.RAM Disk:> type build/Makefile
VPATH := ../src

output: input
cat $< > $@

Then if you use make 3.81 you'll get this, which is what you would expect:

Quote:

7.RAM Disk:build> make
cat ../src/input > output
7.RAM Disk:build> type output
test

But if you use 3.82 you get this:

Quote:

7.RAM Disk:build> make382
make382: *** No rule to make target `input', needed by `output'. Stop.

With 3.82 'input' can't be found despite VPATH being set.

walkero

Re: GNU Make and VPATH

Posted on: 2022/2/11 22:42 #8

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@sTix
Thank you for that example.

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