[Gnash-dev] SIZET_FMT and runtime behaviour checking (was: Appeal for help - please do a quick test)

[strk]

(sorry for flooding)

>From autoconf.info:

  << Avoid running test programs if possible, because this prevents people from
   configuring your package for cross-compiling. >>

This means dropping the AC_TRY_RUN as a whole is a good idea after all...

What we want to know is just the printf format string to use for size_t
variables. IIRC, the gnu libc provides a %z modifier for exactly this, for
any other libc implementation we need to know both size and signedness
of it. Also, we want to know this for the *target* host, not for the build
host. 

All in all, the simpler solution seems to be always casting the size_t variable
into a known type and forget about SIZET_FMT as a whole.

Comments ?

--strk;

On Wed, Jun 06, 2007 at 09:22:34AM +0200, strk wrote:
> On Wed, Jun 06, 2007 at 09:08:34AM +0200, strk wrote:
> 
> > Alright, found the problem.
> > -g -O2 will NOT be pushed if CXXFLAGS is overridden by user (theoretically).
> > Our setting CXXFLAGS=$save_CXXFLAGS seems to be taken as such an override.
> > Even if $save_CXXFLAGS is empty !!
> > 
> > To confirm just add the following in configure.ac:
> > 
> > save_CXXFLAGS="$CXXFLAGS"
> > CXXFLAGS="$save_CXXFLAGS"
> > 
> > And the -g -O2 go away ...
> 
> Now, I have a patch, that checks for "original" CXXFLAGS being empty or not.
> If empty, it will be unset after the tests.
> 
> This works fine, but prevents the user from setting CXXFLAGS to the empty 
> string
> in his own WILL.
> 
> Example:
> 
>       $ CXXFLAGS="" ./configure # will result in using default CXXFLAGS
> 
>               Same as:
> 
>       $ ./configure
> 
> This is unless anyone knows a tip to check if a variable is set or not using 
> a bourne shell.
> (ie: empty string counting as being set)
> 
> --strk;
> 
> 
> 
> 
> 
> 
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