Re: [Bug-readline] Readline 6.3 cross-compilation fails

[Chet Ramey]

On 3/19/14 6:26 PM, Ludovic Courtès wrote:
> Hi,
> 
> Readline 6.3’s configure fails when cross-compiling:
> 
> --8<---------------cut here---------------start------------->8---
> [...]
> 
> checking whether mbrtowc and mbstate_t are properly declared... yes
> checking for iswlower... yes
> checking for iswupper... yes
> checking for towlower... yes
> checking for towupper... yes
> checking for iswctype... yes
> checking for nl_langinfo and CODESET... yes
> checking for wchar_t in wchar.h... yes
> checking for wctype_t in wctype.h... yes
> checking for wint_t in wctype.h... yes
> checking for wcwidth broken with unicode combining characters... configure: 
> error: in `/tmp/nix-build-readline-6.3.drv-0/readline-6.3':
> configure: error: cannot run test program while cross compiling
> See `config.log' for more details
> --8<---------------cut here---------------end--------------->8---
> 
> I fixed it in Guix by passing bash_cv_wcwidth_broken=no:
> 
>   
> http://git.savannah.gnu.org/cgit/guix.git/commit/?id=f6d47eb6d5e046abc8a7a7dc0863c5661197ef0d
> 
> A fix might be to conservatively set bash_cv_wcwidth_broken=yes in the
> fourth arm of AC_TRY_RUN (or better, AC_RUN_IFELSE.)

I can't see how changing the default from `no' to `yes' is going to make a
difference.

There is one thing that came up a few weeks back.  There is a typo in the
definition of the wcwidth check:

http://lists.gnu.org/archive/html/bug-readline/2014-02/msg00010.html

That might make a difference, though I'm not sure how.

Chet
-- 
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Chet Ramey, ITS, CWRU    address@hidden    http://cnswww.cns.cwru.edu/~chet/