[Scons-users] How to capture the compiler output

[Bill Deegan]

You could also redefine env['SPAWN']
https://scons.org/doc/production/HTML/scons-man.html#cv-SPAWN


On Mon, Jul 29, 2024 at 8:15 AM Mats Wichmann <mats at wichmann.us> wrote:

> On 7/29/24 08:19, 于 wrote:
> > Hi Guys,
> >
> > ‍I want to capture the compiler output, to get the warning and error
> > counter.
> > ‍I think I can redefinite the sys.write.stdout. So I did. And I can
> > capture the scons command line, but I can't get compiler
> > output(warning&error).
> > ‍Then I find that compiler warning and error are print via
> > sys.write.stderr, so I modify compiler argument, print all of compiler
> > output via sys.write.stdout. But I can't get warning and error also.
> > I know scons call compiler via subprocess, subprocess can get compiler
> > output. But scons don't save compiler output.
> > How can I capture compiler warning and error output via scons.
>
> Your best bet today is to capture this *outside* of SCons. On a Linux
> system, for example, you can use the "script" command to capture a
> session, or you can redirect the SCons command itself, like:
>
>
> script -c "scons target" BUILD.LOG
> scons target 2>&1 | tee BUILD.LOG
>
> Neither has a *direct* equivalent on Windows though you can still
> capture the two output streams.
>
> There have been several requests for this over the years - you can hunt
> in the issue tracker  on GitHub and see a few of them - but the fact is,
> SCons itself doesn't listen (1), so it doesn't *know* what the output
> from external build commands are.
>
>
> (1) there are a few exception... while running Configure() checks, SCons
> uses a special setup to capture everything from those builds which it
> uses in a special way, but in normal running, no.
>
>
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