Re: poll() check and bootstrapping

[Thomas Dickey]

On Tue, Oct 06, 2015 at 01:55:45PM +0200, Tomáš Čech wrote:
> Hello,
> 
> I'm trying to clean the openSUSE spec file (recipe for build or RPM
> package) and I found some workarounds which I believe should get fixed
> in upstream instead.
> 
> 1] I found that we're running whole build in screen to correctly pass poll() 
> test
>   ("checking if poll really works")
> 
> I asked our ncurses maintainer to patch the configure instead
> involving terminal emulator in the build but I believe that it is
> something other distribution may benefit from.
> 
> Would that be acceptable to add something like
> 
>   --have-working-poll=(yes|no)
> 
> to override the test?

Not really - suggestions for reliably testing the system without a
terminal are welcome.  I wrote the test a while back due to a broken
implementation on Linux...

(Options such as that suggested only lead to new bug reports...)
 
> 2] it seems that build fails when submitting
>   --with-fallbacks='some,terms,here' and when tic is not present in the
>   system

It's been a documented requirement of the option for a long time, in the
INSTALL file:
 
        In order to support operation of ncurses programs before the terminfo
        tree is accessible (that is, in single-user mode or at OS installation
        time) the ncurses library can be compiled to include an array of
        pre-fetched fallback entries.  This must be done on a machine which
        has ncurses' infocmp and terminfo database installed (as well as
        ncurses' tic and infocmp programs).

> I know it is not common situation and you usually have older version
> of ncurses available but sometimes you need to build everything from
> scratch.

But building from build-copy of tic has always been an option for a
packager simply by properly setting the $PATH variable (and possibly
LD_LIBRARY_PATH, depending on your build configuration).  There's no
need to do two builds.

> Maintainer had to generate fallback.c with FALLBACK_LIST="" (not to
> involve tic), build tinfo and tic to be able to build correct
> fallback.c to continue with the build.
> 
> I think this can be considered as bug.

no - it's intentionally made simple...
 
> Furthermore, it would make sense to expose BUILD_TIC and BUILD_INFOCMP
> to configure script as option which could help cross compilation in a
> clean way...

I think that $PATH is enough
 
> I hope that these topics were not yet rejected or are not completely bogus.
> 
> Best regards,
> 
> Tomas Cech



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-- 
Thomas E. Dickey <address@hidden>
http://invisible-island.net
ftp://invisible-island.net

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