on OSX in dlfcn.h:

#warning "You are using dlopen(), a legacy API. Please use the Mach-O 
dylib loading APIs if at all possible"



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dlopen() will be compatible with Linux etc, whereas  the Mach-O APIs aren't 
(I'm pretty sure but
not totally). That'll mean we'll have to use specialised code.

Victor

At 21:44 09/03/2005, you wrote:
>on OSX in dlfcn.h:
>
>#warning "You are using dlopen(), a legacy API. Please use the Mach-O 
>dylib loading APIs if at all possible"
>
>
>
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Victor Lazzarini
Music Technology Laboratory
Music Department
National University of Ireland, Maynooth 



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In Csound 4, csound/load_opcode.c has an "interesting" structure.  It
looks like:

------------------ load_opcode.c ------------------
Intro

#if defined(WIN32)

Windows specific code

#elif defined(LINUX) || defined(NETBSD) || (__MACH__)

Platform independent code using dlopen 

#elif defined(MACOSX)

MacOS X specific code using routines that start with NS

#else

Dummy routines

#endif

Stuff that uses the above
------------------ load_opcode.c ------------------

Does the defined(MACOSX) branch ever get used?  Also, shouldn't this
code be rewritten to use dlopen whenever it's available?  In other
words, shouldn't this code be rewritten to have the following form:

------------------ alt load_opcode.c ------------------
Intro

#if define (HAVE_DLFCN_H) || defined(LINUX) || defined(NETBSD) || (__MACH__)

Platform independent code using dlopen 

#elif defined(WIN32)

Windows specific code

#elif defined(MACOSX)

MacOS X specific code using routines that start with NS

#else

Dummy routines

#endif

Stuff that uses the above
------------------ alt load_opcode.c ------------------

John

Victor Lazzarini  writes:

> dlopen() will be compatible with Linux etc, whereas  the Mach-O APIs
> aren't (I'm pretty sure but
> not totally). That'll mean we'll have to use specialised code.
> 
> Victor
> 
> At 21:44 09/03/2005, you wrote:
> >on OSX in dlfcn.h:
> >
> > #warning "You are using dlopen(), a legacy API. Please use the
> > Mach-O
> >dylib loading APIs if at all possible"


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I noticed that GBS was using this code recently.  My impression was that the
load_opcode.c code is not used and that dl_opcodes.c should be used instead.
The latter is where I added my OS 9 code for loading libraries but the OS
X-specific code is only in load_opcodes.c

*shrug*

Anthony

On 3/10/05 7:25 AM, John D. Ramsdell  etched in stone:

> In Csound 4, csound/load_opcode.c has an "interesting" structure.  It
> looks like:
[...]
> Does the defined(MACOSX) branch ever get used?  Also, shouldn't this
> code be rewritten to use dlopen whenever it's available?  In other
> words, shouldn't this code be rewritten to have the following form:



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Anthony Kozar  writes:

> My impression was that the load_opcode.c code is not used and that
> dl_opcodes.c should be used instead.

Interesting.  I don't know why I put load_opcode.c into my makefile
because it appears that dl_opcode.c is in csound/Makefile.lnk, and I
used it as a template for my makefile.  Unless I hear otherwise, I
make the change.

John


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oh really? i use load_opdcode -- what does cs5 use?

On Mar 10, 2005, at 7:50 AM, John D. Ramsdell wrote:

> Anthony Kozar  writes:
>
>> My impression was that the load_opcode.c code is not used and that
>> dl_opcodes.c should be used instead.
>
> Interesting.  I don't know why I put load_opcode.c into my makefile
> because it appears that dl_opcode.c is in csound/Makefile.lnk, and I
> used it as a template for my makefile.  Unless I hear otherwise, I
> make the change.
>
> John
>
>
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I wrote that code -- on 10.2 which I run there is no sign of dlopen --
and hence the code.  Actually I think changes in CS4 shouydl just not
happen, and energy put into CS5.
==John ffitch


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jpff@cs.bath.ac.uk writes:

> I wrote that code -- on 10.2 which I run there is no sign of dlopen
> --

When I compile on 10.3, the code compiles and links, so dlopen is
there.  I don't know if it works, but Mac developer documentation
suggested to me it should.

John


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Kelly Fitz reports that on a Mac, he is able to load his opcodes on
one machine using the GBS distribution.  However, on a similar
machine, the same system has trouble dynamically loading the FFTW
library.  I'm not sure about FFTW problem, but this all suggests that
dlopen works on Macs.  I rearranged the code in load_opcodes.c as I
suggested earlier.  This change will have no impact on non-GBS
distributions of Csound 4.

John

ramsdell@mitre.org (John D. Ramsdell) writes:

> In Csound 4, csound/load_opcode.c has an "interesting" structure.  It
> looks like:
> 
> ------------------ load_opcode.c ------------------
> Intro
> 
> #if defined(WIN32)
> 
> Windows specific code
> 
> #elif defined(LINUX) || defined(NETBSD) || (__MACH__)
> 
> Platform independent code using dlopen 
> 
> #elif defined(MACOSX)
> 
> MacOS X specific code using routines that start with NS
> 
> #else
> 
> Dummy routines
> 
> #endif
> 
> Stuff that uses the above
> ------------------ load_opcode.c ------------------
> 
> Does the defined(MACOSX) branch ever get used?  Also, shouldn't this
> code be rewritten to use dlopen whenever it's available?  In other
> words, shouldn't this code be rewritten to have the following form:
> 
> ------------------ alt load_opcode.c ------------------
> Intro
> 
> #if define (HAVE_DLFCN_H) || defined(LINUX) || defined(NETBSD) || (__MACH__)
> 
> Platform independent code using dlopen 
> 
> #elif defined(WIN32)
> 
> Windows specific code
> 
> #elif defined(MACOSX)
> 
> MacOS X specific code using routines that start with NS
> 
> #else
> 
> Dummy routines
> 
> #endif
> 
> Stuff that uses the above
> ------------------ alt load_opcode.c ------------------
> 
> John
> 
> Victor Lazzarini  writes:
> 
> > dlopen() will be compatible with Linux etc, whereas  the Mach-O APIs
> > aren't (I'm pretty sure but
> > not totally). That'll mean we'll have to use specialised code.
> > 
> > Victor
> > 
> > At 21:44 09/03/2005, you wrote:
> > >on OSX in dlfcn.h:
> > >
> > > #warning "You are using dlopen(), a legacy API. Please use the
> > > Mach-O
> > >dylib loading APIs if at all possible"
> 
> 
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