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Re: Sabotage against guile users?

From: Roland Orre
Subject: Re: Sabotage against guile users?
Date: Wed, 10 Jul 2013 23:12:35 +0200

Hi Alexi,
thanks for your reply.
The builds works fine, but when loading the module, e.g.
(use-modules (bcpnn2))
which contains
(load-extension (string-append bcpnn2-path ".libs/libbcpnn" "scm_init_bcpnn")
I get the error message
./bcpnn2.scm:13:1: In procedure dynamic-link in _expression_ (load-extension (string-append bcpnn2-path ".libs/libbcpnn") "scm_init_bcpnn"):
./bcpnn2.scm:13:1: file: "/home/orre/work/guile/bcpnn-2.1/.libs/libbcpnn", message: "file not found"
despite that directory contains a lot of recently built files like
bcpnn.o bits.o libbcpnn.a libbcpnn.lai mymath.o sets.o time.o user.o
However, I see that on a machine where this still works with guile-1.8.5 I actually call a  bash script which sets LD_LIBRARY_PATH and LTDL_LIBRARY_PATH as well
but the latter only for readline and LD_LIBRARY_PATH only points to guile's libltdl/lib and guile/lib but I haven't checked if these are still necessary.

The main problem is that I've never seen any kind of documentation upon how doing this correct, my only documentation has been e.g
which I've utilized and modified, but that no longer exists.

I would be very glad to be hinted about where I can actually find the correct and precise doc for making dynamically loadable modules, which is fundamental for anything I do.
Apart from that I really love guile. I even used the precursor to guile, Aubrey Jaffer's scm before guile, in a similar manner, but at that time I had to statically link scm  with my extensions.

On Wed, Jul 10, 2013 at 7:49 PM, Alexei Matveev <address@hidden> wrote:

Hi, Roland,

What exactly goes wrong when you build your module?
Did you accidentally the error message?

I use this convenience command to augment the linker and compiler flags:

        LIBS += $(shell guile-config link)
        INCDIRS += $(shell guile-config compile)


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