Lightning inclusion problem

Hi,

I am trying to get GNU Smalltalk to compile with JIT compilation. While
I still haven't been able to do so (see my post on the lightning mailing
list for those interested), I have at least found one problematic cause:

When trying to use the system-installed Lightning, I run into the
problem that GNU Smalltalk's build directory is prioritised above the
system include directory (because of "-I ." in CPPFLAGS) and that the
build directory also contains a subdirectory "lightning". This leads to
the situation that lines like

   #include "lightning/foo.h"

in, say, /usr/include/lightning.h actually are resolved as
"$(build_dir)/lightning/foo.h", which is probably not what we want as it
leads to version mismatch problems. A possible solution is to rename the
"lightning" directory in GNU Smalltalk's build directory, in which case
compilation works just fine (except for the problems mentioned in the
lightning mailing list, but those are not related), or to move it in a
subdirectory like "lib" or "extern".

Regards,
Denis

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On 01/10/2011 08:29 PM, Denis Washington wrote:
> Hi,
>
> I am trying to get GNU Smalltalk to compile with JIT compilation. While I
> still haven't been able to do so (see my post on the lightning mailing list
> for those interested), I have at least found one problematic cause:

Hi Denis,

a note of warning, the JIT is not passing some/many of the regression tests
and was not used in production for a while (or that is my impression of almost
a year with GNU Smalltalk).

holger

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On 01/10/2011 08:29 PM, Denis Washington wrote:
Yes, GNU Smalltalk tries to use a bundled lightning rather than the
system one.  This is obsolete (it should go away, just like the bundled
libffi/libltdl/libsigsegv are being deprecated).

For the time being your workaround is okay.

Paolo

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