How @INC can be managed from c code?

DrMoisha has asked for the wisdom of the Perl Monks concerning the following question:

Replies are listed 'Best First'.
Re: How @INC can be managed from c code? by Corion (Patriarch) on Apr 01, 2015 at 13:26 UTC
I think that `@INC` is just another Perl variable. You could either run Perl code to populate `@INC`: `push @INC, '/opt/myapp/lib';` [download] ... or you could do the same in C: `AV * PL_inc = get_av("INC",0); if( ! PL_inc ) { Perl_croak(aTHX_ "@INC not found from C code?!"); }; av_push(results, newSVpv("/opt/myapp/lib"));` [download]	[reply] [d/l] [select]
Re^2: How @INC can be managed from c code? by DrMoisha (Novice) on Apr 01, 2015 at 15:00 UTC
Have you meant `av_push(PL_inc, newSVpv("/opt/myapp/lib", 15));` [download] However, it can only be called after perl_parse() So maybe I'm on wrong way.	[reply] [d/l]
Re^3: How @INC can be managed from c code? by Corion (Patriarch) on Apr 02, 2015 at 06:55 UTC
Yeah, the `results` was a leftover from pasting together the code. I don't really do C, and don't interact much from C-space with the Perl interpreter, but I think you can call `perl_parse()` multiple times, just like `-e` does.	[reply] [d/l] [select]
Re: How @INC can be managed from c code? ( runperl.c ) by Anonymous Monk on Apr 01, 2015 at 18:12 UTC
Just like you would from the commandline `perl -Iwhatever -Iwhateverelse -f programfile.pl -- args args args` [download] http://sourceforge.net/p/citrusperl/code/HEAD/tree/tags/PRE_VERSION_2001/execsrc/main.c#l79 https://metacpan.org/source/PLAVEN/Padre-1.00/win32/padre.c env manipulation par_unsetenv("PERL5OPT"); https://metacpan.org/source/RSCHUPP/PAR-Packer-1.025/myldr/utils.c / https://metacpan.org/source/RSCHUPP/PAR-Packer-1.025/myldr/mktmpdir.c And here it is runperl.exe by another nameperl scripts executor on Win32, and its cousin Turn your script into binary without a compiler! :-P	[reply] [d/l]
Re^2: How @INC can be managed from c code? ( runperl.c ) by DrMoisha (Novice) on Apr 03, 2015 at 15:35 UTC
Thank you! Sorry, I cannot check this right now, but as soon as I can, I'll reply!	[reply]
Re: How @INC can be managed from c code? by LanX (Saint) on Apr 01, 2015 at 13:49 UTC
Not sure at all, but setting environment might help. Cheers Rolf _{(addicted to the Perl Programming Language and ☆☆☆☆ :)} PS: Je suis Charlie!	[reply]
Re^2: How @INC can be managed from c code? by DrMoisha (Novice) on Apr 01, 2015 at 15:02 UTC
I'm building application to deploy on other machines, it's better not to rely on environment variables.	[reply]
Re^3: How @INC can be managed from c code? by LanX (Saint) on Apr 01, 2015 at 15:07 UTC
An application can only change it's own environment and passes it to it's child processes. But I can't tell if embedded Perl code still evaluates %ENV. May be only a question of initialization phase and timing, setting it as early as possible might help. Better just try it out and tell us. Cheers Rolf _{(addicted to the Perl Programming Language and ☆☆☆☆ :)} PS: Je suis Charlie! update have a look at PERLLIB	[reply]

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