openvrml-develop

[openvrml-develop] OpenVRML in MacOS - Linker Errors

[Ignacio E. <na...@gm...>]

Hi, all
Long time ago I did almost the same question:
http://old.nabble.com/NEWBIE:-using-openvrml-in-mac-OS-10.6-td26253956.html
I had troubles setting my project in Xcode with openvrml from Macports.

Now, I did as suggested but I found that Xcode does not link necessary
dylibs. (They have to be explicitly added to the project)
sample: pretty_print.cpp compiles ok, but fails when linking.
So I dug into /opt/local/libs and brought libopenvrml.9.dylib into
Xcode and 13 link errors became 6!. (So my theory is right)
Also found libopenvrml.la file and realized that there are many
dependency libraries. So, doing this manually is like a never-ending
work.

So my questions are:
What are the dylibs needed to get pretty_print.cpp to work?
Is there any way I can make Xcode read *.la files? (or an alternative
way?) so he can link libraries automatically.

Even though Xcode knows the library search path does not seems to be
searching for dylibs. How this can be?

I am kind of lost here. I have a big program that requires VRML in the
last part and would like to have it running in Mac OS also.

I am using OpenVRML 1.8.5, SnowLeopard 10.6.3 and Xcode 3.2.3
(Pre-release <- Is this the reason??)

Thanks in advance.

Ignacio.


-- 
________________________________
慶應義塾大学大学院　理工学研究科
開放環境科学専攻　斎藤英雄研究室
修士２年　Guillermo Ignacio Enriquez G.
e-mail : 　na...@hv...
________________________________
_____________________________________________

Re: [openvrml-develop] OpenVRML in MacOS - Linker Errors

[Braden M. <br...@en...>]

On Sun, 2010-05-09 at 06:17 +0900, Ignacio Enriquez wrote: 
> Hi, all
> Long time ago I did almost the same question:
> http://old.nabble.com/NEWBIE:-using-openvrml-in-mac-OS-10.6-td26253956.html
> I had troubles setting my project in Xcode with openvrml from Macports.
> 
> Now, I did as suggested but I found that Xcode does not link necessary
> dylibs. (They have to be explicitly added to the project)
> sample: pretty_print.cpp compiles ok, but fails when linking.
> So I dug into /opt/local/libs and brought libopenvrml.9.dylib into
> Xcode and 13 link errors became 6!. (So my theory is right)
> Also found libopenvrml.la file and realized that there are many
> dependency libraries. So, doing this manually is like a never-ending
> work.

.la are "libtool libraries", which is to say that they are actually text
files with information for libtool (which is typically known as glibtool
on your Mac).

> So my questions are:
> What are the dylibs needed to get pretty_print.cpp to work?

Well, give us a hint, at least: what symbols are undefined?

> Is there any way I can make Xcode read *.la files? (or an alternative
> way?) so he can link libraries automatically.

I'm pretty sure that there's no way Xcode will understand a .la file.

I'm under the (possibly mistaken?) impression that .dylibs are aware of
their dependencies.  I could be wrong about that; or there could be
something wrong with the way libopenvrml.dylib was created such that
this isn't working as it should.

libopenvrml doesn't depend on much; but off the top of my head, there's
libboost_thread and libxml.

> Even though Xcode knows the library search path does not seems to be
> searching for dylibs. How this can be?

I'm not sure exactly what you mean here; but if the question is, "Why
aren't the .dylib dependencies being pulled in automatically?" see
above.

> I am kind of lost here. I have a big program that requires VRML in the
> last part and would like to have it running in Mac OS also.
> 
> I am using OpenVRML 1.8.5, SnowLeopard 10.6.3 and Xcode 3.2.3
> (Pre-release <- Is this the reason??)

Based on what I know so far, probably not.

-- 
Braden McDaniel <br...@en...>

Re: [openvrml-develop] OpenVRML in MacOS - Linker Errors

[Ignacio E. <na...@gm...>]

Thanks for your help Braden.

I added :

libboost_thread-mt.dylib
libxml2.2.dylib
libopenvrml.9.dylib

as you suggested and I could successfully run pretty_print.cpp , I got
my sample wrl file very well indented ;)
It seems that Xcode does not automatically pull dylibs.

Just one more question:
Is regarding sdl_viewer.cpp example

I added SDL headers and dylibs:
libSDL-1.2.0.dylib
libopenvrml-gl.8.dylib
besides the everything needed for pretty_print.cpp and I got one last
link error:

Undefined symbols:
  "_main", referenced from:
      start in crt1.10.6.o
     (maybe you meant: _SDL_main)
ld: symbol(s) not found
collect2: ld returned 1 exit status

I get this error when compiling 10.5 and 10.6. with i386 arch.

Is this relevant to openvrml?
I want to be able to render some vrml in a GLUT or Cocoa window
(NSOpenGLView) , so I only need, libboost_thread, libxml, libopenvrml
and libopenvrml-gl. Is this correct?

Thanks in advance.





When I try to run the next example It

On Sun, May 9, 2010 at 12:04 PM, Braden McDaniel <br...@en...> wrote:
> On Sun, 2010-05-09 at 06:17 +0900, Ignacio Enriquez wrote:
>> Hi, all
>> Long time ago I did almost the same question:
>> http://old.nabble.com/NEWBIE:-using-openvrml-in-mac-OS-10.6-td26253956.html
>> I had troubles setting my project in Xcode with openvrml from Macports.
>>
>> Now, I did as suggested but I found that Xcode does not link necessary
>> dylibs. (They have to be explicitly added to the project)
>> sample: pretty_print.cpp compiles ok, but fails when linking.
>> So I dug into /opt/local/libs and brought libopenvrml.9.dylib into
>> Xcode and 13 link errors became 6!. (So my theory is right)
>> Also found libopenvrml.la file and realized that there are many
>> dependency libraries. So, doing this manually is like a never-ending
>> work.
>
> .la are "libtool libraries", which is to say that they are actually text
> files with information for libtool (which is typically known as glibtool
> on your Mac).
>
>> So my questions are:
>> What are the dylibs needed to get pretty_print.cpp to work?
>
> Well, give us a hint, at least: what symbols are undefined?
>
>> Is there any way I can make Xcode read *.la files? (or an alternative
>> way?) so he can link libraries automatically.
>
> I'm pretty sure that there's no way Xcode will understand a .la file.
>
> I'm under the (possibly mistaken?) impression that .dylibs are aware of
> their dependencies.  I could be wrong about that; or there could be
> something wrong with the way libopenvrml.dylib was created such that
> this isn't working as it should.
>
> libopenvrml doesn't depend on much; but off the top of my head, there's
> libboost_thread and libxml.
>
>> Even though Xcode knows the library search path does not seems to be
>> searching for dylibs. How this can be?
>
> I'm not sure exactly what you mean here; but if the question is, "Why
> aren't the .dylib dependencies being pulled in automatically?" see
> above.
>
>> I am kind of lost here. I have a big program that requires VRML in the
>> last part and would like to have it running in Mac OS also.
>>
>> I am using OpenVRML 1.8.5, SnowLeopard 10.6.3 and Xcode 3.2.3
>> (Pre-release <- Is this the reason??)
>
> Based on what I know so far, probably not.
>
> --
> Braden McDaniel <br...@en...>
>
>
> ------------------------------------------------------------------------------
>
> _______________________________________________
> openvrml-develop mailing list
> ope...@li...
> https://lists.sourceforge.net/lists/listinfo/openvrml-develop
>



-- 
________________________________
慶應義塾大学大学院　理工学研究科
開放環境科学専攻　斎藤英雄研究室
修士２年　Guillermo Ignacio Enriquez G.
e-mail : 　na...@hv...
________________________________
_____________________________________________