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SubjectRe: [PATCH 1/2] trace-cmd: Fix the detection for swig
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On Wed, 2018-02-07 at 22:01 +0800, Zamir SUN wrote:
>
> While just a note for this, in Fedora 27:
>
> $ if command -v swig; then echo 1; else echo 0; fi
> /usr/bin/swig
> 1
>
> Actually this test has the same problem as of `which swig` - When swig
> exists, the var SWIG_DEFINED will not be 1 (as shown above).
>
> I see Vladislav is already on this thread. I hope this can be fixed
> before merging the patch set.
>

Hi Zamir,
I'm sorry but I'm unable to reproduce the issue on Fedora 27,
after applying my series of patches.

In my case (fresh install of Fedora27, no customizations):
if command -v swig; then echo 1; else echo 0; fi
works as expected.

SWIG_DEFINED does not have to be '1' in order the Makefile to work.
Because the check in my branch is:

ifeq ($(SWIG_DEFINED), 0)
BUILD_PYTHON := report_noswig
NO_PYTHON = 1
endif

So there should be no problem. Just to be sure, I've tried to compile trace-cmd
with my patches first without 'swig' and later with it (on Fedora).
The result was that, in the first case the message 'no swig installed'
was displayed, while in the other case it was not. Or better, a message
saying that 'python-dev' is missing was shown.
[Yes, both swig and python-dev are necessary].

After installing also 'python-devel' (in Ubuntu is just '-dev'), the
build system was able to build the rest of the python targets as well.


Could you please try by using my fork on GitHub?
https://github.com/vvaltchev/trace-cmd-fork
BRANCH NAME: make8.

Let me know if you still experience the issue.

Thanks,
Vlad



--
Vladislav Valtchev
VMware Open Source Technology Center

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