On 2021-03-24 21:27, cretin1997 via oi-dev wrote:
‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Thursday, March 25, 2021 1:43 AM, Bob Friesenhahn
<bfrie...@simple.dallas.tx.us> wrote:
On Wed, 24 Mar 2021, cretin1997 via oi-dev wrote:
> I know the Solaris linker is what caused all of the trouble.
> FreeBASIC expects a GNU linker. This time is the same. The Solaris
> ld doesn't support --export-dynamic.
The Solaris linker has not caused a problem. It seems like the Linux
linker has caused the problem! :-)
I suggest trying without the option. If there is some problem later
with resolving symbols while actually running the program, then return
to the issue.
If one looks at the Linux dlopen(3) manual page, there is a
RTLD_GLOBAL option. Apparently this used to be the Linux default,
then but then RTLD_LOCAL became the default due to security concerns.
It is my experience that Illumos will still behave as described for
RTLD_GLOBAL:
"The symbols defined by this shared object will be made available for
symbol resolution of subsequently loaded shared objects."
> Put this shit aside, what I do is I just removed the problematic
> option. FreeBASIC does turn on it option for Linux. I don't know
> what it does, nor I wanted to know, I only wanted to know the
> equivalent option for the Solaris linker. If no such equivalent
> option available, does the shared library produced by FreeBASIC with
> --export-dynamic removed work? What is the side effect if without
> --export-dynamic? This is the only thing I wanted to know! The one
> most qualified to answer such question should be the FreeBASIC
> developers, but, as you already known... do it yourself and you
> could submit the code to us!
Since you are porting the code, you will soon learn if it works.
Trial and error is a valid approach.
Bob
--------------------------------------------------------------------------------------------------------------
Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
Public Key, http://www.simplesystems.org/users/bfriesen/public-key.txt
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No. The GNU linker is not a problem. It is widely used across platforms.
It's
nothing wrong for the developers to insist it's the default. Even on
platform
doesn't use the GNU linker by default like FreeBSD, it's easily installed
from
ports/packages and it will just work. It is you, a weirded platform, with it
incompatible linker, that caused the problem. As I said many times before
and
being hated because of this but I will not afraid said it again: software
developers will just skip your platforms and support other platforms that
they
will have the least effort to support, that is platforms that behave almost
identical to their first class platform, usually be Linux.
Perhaps you didn't read my last email. OK, it's too long, I myself tired to
read
it, too. I did try to remove --export-dynamic and after that I could have
the
compiler to generate a shared library (.so file). And you are right, trial
and
error is the only solution, because I have no one to mentor, no one to ask
for.
But unfortunately, it seemed the produced shared library doesn't work. The
program
linked with it will just sit there but do nothing, it doesn't even seem to
be
launched, indicating that it failed to load the shared library or the shared
library simply doesn't work. Someone on the internet said I should run truss
on
the binary, I did and I found after a while the program just sit there idle.
No
outputs were even printed by this program to the terminal. It just stuck and
needs
to be canceled with Ctrl+C.
Regarding your FreeBASIC adventure;
It sounds like your lib (.so file) is blocking on something. Is it possible
to
build it again with DEBUG symbols? This would cause it to be more informative
during load/execution and that would tell us where it's blocking, and what
it's
expecting, or waiting for. Also, does it allow starting in a VERBOSE mode?
Maybe
a -v , -V or --verbose switch? This may also provide the clues needed to
resolve
the problem. Congrats on your progress so far with it!
--Chris
Sent with ProtonMail Secure Email.
--
~10yrs a FreeBSD maintainer of ~160 ports
~40yrs of UNIX
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