| Re: CALL_EXTERNAL error when calling a C program [message #45840] |
Tue, 11 October 2005 16:22 |
dmg31
Messages: 3
Registered: October 2005
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Junior Member |
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thank you for your reply,
I tried your suggestions, along with a few other options and I was
able to compile and create the sharable library with the line
ld simul2.o -flat_namespace -bundle -undefined suppress -o simul.so
however when I ran the idl code again I got a new error saying:
Symbol not found: dyld_stub_binding_helper
Expected in: flat namespace
im not sure the best soultion to this
thank you so much for your help again
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| Re: CALL_EXTERNAL error when calling a C program [message #45858 is a reply to message #45840] |
Mon, 10 October 2005 17:46  |
Karl Schultz
Messages: 341
Registered: October 1999
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Senior Member |
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On Sun, 09 Oct 2005 11:27:40 -0700, golembeski wrote:
> Hey,
>
> I am running on mac os x. I have an IDL program which calls a C
> program, and this worked when I ran the program on a SUN but now I have
> just moved my files onto a new mac. I have been reading many of the
> responses to similar questions on this board but I have had no success
> in solving these errors.
>
> When I compile the c code using:
>
> gcc -c simul2.c
> ld simul2.o -bundle -lm -o simul.so
>
> i get the error:
>
> ld: Undefined symbol:
> dyld_stub_blinding_helper
>
> I am not sure how to solve that problem.
Your code (simul2.c) somehow needs the dynamic loader.
Try including libdl.dylib (add -ldl)
or maybe add the -dynamic option.
anyway, dyld_stub_binding_helper is defined in libdl.
I assume that you just made a typo above - "blinding".
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| Re: CALL_EXTERNAL error when calling a C program [message #45867 is a reply to message #45858] |
Mon, 10 October 2005 13:02 |
Denis Barkats
Messages: 4
Registered: October 2005
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Junior Member |
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Here is what I do and it works on my mac.
i have a file simple.c:
#include <stdio.h>
#include <stdlib.h>
int Simple() {
return 13;
}
Using gcc I do
-gcc -c simple.c
-gcc -bundle -flat_namespace -o simple.so simple.o
which creates the sharable librairie simple.so which I can call from
IDL as
-print,call_external('/Users/denis/idl/bicep/simple.so','Sim ple',
/unload)
13
sometimes IDL is a pain so restart it.
good luck
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