[Buildroot] [PATCH] BASH: Adding features that can not be automatically detected while cross-compiling

[Michael S. Zick <minimod@morethan.org>]

On Tue January 17 2012, Arnout Vandecappelle wrote:
>  Hoi Arkady,
> 
>  It's difficult or impossible to post patches from GMail.  
>

There was a second posting with the GMail-Text features fixed.

> I've taken over your patch and will post it in reply.  
> I'll also post a v2 which incorporates some of my feedback, below.
> 

I am sure the O.P. will appreciate that.  Just making GMail work
was a challenge.  ;-)

Mike
> On Sunday 15 January 2012 18:14:32 Arkady Gilinsky wrote:
> > From: Arkady Gilinsky <arcadyg@gmail.com>
> > Date: Sat, 14 Jan 2012 11:27:11 +0200
> > Subject: [PATCH] BASH: Adding features that can not be automatically detected
> >  while cross-compiling
> > 
> > There are some bash features that can not be detected automatically during
> > configure stage while cross-compiling. This commit add ability to force
> > support of such a features.
> > 
> > Signed-off-by: Arkady Gilinsky <arcadyg@gmail.com>
> Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
> 
> > ---
> >  package/bash/Config.in |   33 +++++++++++++++++++++++++++++++++
> >  package/bash/bash.mk   |    6 +++++-
> >  2 files changed, 38 insertions(+), 1 deletions(-)
> > 
> > diff --git a/package/bash/Config.in b/package/bash/Config.in
> > index 9ee46e8..b7cc27d 100644
> > --- a/package/bash/Config.in
> > +++ b/package/bash/Config.in
> > @@ -5,3 +5,36 @@ config BR2_PACKAGE_BASH
> >  	  The standard GNU Bourne again shell.
> > 
> >  	  http://tiswww.case.edu/php/chet/bash/bashtop.html
> > +
> > +menu "BASH cross compile features selection"
> > +	depends on BR2_PACKAGE_BASH
> 
>  Adding a menu just makes things more complex - the indentation added
> by the 'depends on' statements is sufficient.  But then it should be
> a comment that explains the subsequent options.
> 
> > +config BR2_PACKAGE_BASH_JOB_CONTROL
> > +	bool "job_control"
> > +	depends on BR2_PACKAGE_BASH
> > +	help
> > +	   The job control feature (Ctrl-Z and etc.)
> > +	   Configure variable - bash_cv_job_control_missing
>  I don' think mentioning the configure variable is relevant here.  (Same
> for the other options.)
> 
>  Actually, doesn't this feature always exist on a Linux kernel?
> (Again, same for the other options, except possibly printf_a_format.)
> 
> > +
> > +config BR2_PACKAGE_BASH_NAMED_PIPES
> > +	bool "named_pipes"
> > +	depends on BR2_PACKAGE_BASH
> > +	help
> > +	   Named pipe presence
> > +	   Configure variable - bash_cv_sys_named_pipes
> > +
> > +config BR2_PACKAGE_BASH_SIG_SET_JUMP
> > +	bool "sigsetjmp"
> > +	depends on BR2_PACKAGE_BASH
> > +	help
> > +	   POSIX-style sigsetjmp/siglongjmp
> > +	   Configure variable - bash_cv_func_sigsetjmp
> > +
> > +config BR2_PACKAGE_BASH_PRINTF_A_FORMAT
> > +	bool "printf_a_format"
> > +	depends on BR2_PACKAGE_BASH
> > +	help
> > +	   Printf floating point output in hex notation
> > +	   Configure variable - bash_cv_printf_a_format
> > +
> > +endmenu
> > diff --git a/package/bash/bash.mk b/package/bash/bash.mk
> > index f1f951c..78face7 100644
> > --- a/package/bash/bash.mk
> > +++ b/package/bash/bash.mk
> > @@ -7,7 +7,11 @@
> >  BASH_VERSION = 4.2
> >  BASH_SITE = $(BR2_GNU_MIRROR)/bash
> >  BASH_DEPENDENCIES = ncurses
> > -BASH_CONF_ENV = bash_cv_job_control_missing=no
> > +BASH_CONF_ENV +=
> >           \
> > +   bash_cv_job_control_missing=$(if
> > $(BR2_PACKAGE_BASH_JOB_CONTROL),present,no) \
> > +   $(if $(BR2_PACKAGE_BASH_NAMED_PIPES),
> > bash_cv_sys_named_pipes=present,)      \
> > +   $(if $(BR2_PACKAGE_BASH_SIG_SET_JUMP),
> > bash_cv_func_sigsetjmp=present,)      \
> > +   $(if $(BR2_PACKAGE_BASH_PRINTF_A_FORMAT), bash_cv_printf_a_format=yes,)
>  I prefer (and I believe Peter does as well):
> 
> ifeq ($(BR2_PACKAGE_BASH_JOB_CONTROL),y)
> BASH_CONF_ENV += bash_cv_job_control_missing=no
> endif
> 
> more lines, but easier to read.
> 
> 
>  Regards,
>  Arnout
>