[prev in list] [next in list] [prev in thread] [next in thread] 

List:       r-devel
Subject:    [Rd] Re: R on AIX
From:       Dan Million <lio () hpss1 ! ccs ! ornl ! gov>
Date:       2002-03-25 12:38:58
[Download RAW message or body]

On Sun, 24 Mar 2002, Kurt Hornik wrote:

> Two issues re R on AIX that came up in recent email exchange with Dan
> Million <lio@hpss1.ccs.ornl.gov>:
>
> * We currently use the Autoconf AC_AIX macro which essentially 'defines'
>   _ALL_SOURCE on AIX.
>
>   ... I am wondering if we need the macro
>   at all.  Does anyone know?

I don't think you do (at least in AIX 4.2 and later).  Any code that
includes stdio.h or just about anything else is going to end up defining
_ALL_SOURCE via system headers, unless _XOPEN_SOURCE or _POSIX_SOURCE
are defined.

> * Dan also pointed me to 'run-time linking' vs the usual AIX style
>   linking.  Using run-time linking one could simply do
>
>        MAIN_LDFLAGS=-brtl
>        SHLIB_LDFLAGS="-G"
>
>   instead of the complicated import/export handling with AIX linking,
>   and apparently also no longer need an export file?
>
>   Dan says that run-time linking is available in AIX 4.2 or better, does
>   anyone know more about this?  Should it perhaps be made the default if
>   available?
>
> Note that I have no access to AIX, hence need help ...

If you use gcc, you still need the -Wl prefix to these options; e.g.:

	MAIN_LDFLAGS=-Wl,-brtl
	SHLIB_LDFLAGS=-Wl,-G

I did still use the exports file when I did the build.

As to when runtime linking is needed and when it isn't, I have no
definitive answers.  All I know is that everything worked when I used
runtime linking, and it did not work when I didn't.

Dan


-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-devel-request@stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._

[prev in list] [next in list] [prev in thread] [next in thread]