Re: Sabotage against guile users?

[Roland Orre <roland.orre@gmail.com>]

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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.la libbcpnn.lai libbcpnn.so
libbcpnn.so.0 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
examples/box-dynamic-module/Makefile
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 <alexei.matveev@gmail.com>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)
>
> Alexei
>

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