Re: [osg-users] Mac OS runtime problem
Hi,
This problem is still present.
It seems that under MacOS OpenSceneGraph can only be built with the llvm
compilers due to the Objective C portions of code. I tried configuring gcc to
compile Objective C but there appear to be some differences between the Apple
compiler and gcc with respect to Objective C.
What I would like to do is be able to compile my application using gcc and then
link to OpenSceneGraph - I don't really care whether OpenSceneGraph is built
with gcc or llvm.
However, if I do build my application using gcc then it crashes. The code
segment can be boiled down to the following:
Code:
int main( int argc, char **argv )
{
fprintf(stderr, Creating\n);
osg::ref_ptrosg::DrawElementsUShort p = new osg::DrawElementsUShort();
fprintf(stderr, Created\n);
}
Compiled as follows:
Code:
/opt/local/bin/gcc-mp-4.8 -o osgtest osgtest.cpp -L /usr/local/lib -losg
-lOpenThreads -lstdc++ -I /usr/local/include/
And the crash is as follows:
Code:
Tobiass-retina-MacBook:trunk tobiasduckworth$ ./osgtest
Creating
Created
osgtest(52671) malloc: *** error for object 0x10c7b87e0: pointer being freed
was not allocated
*** set a breakpoint in malloc_error_break to debug
Abort trap: 6
Tobiass-retina-MacBook:trunk tobiasduckworth$
This problem has been present for an age, and is forcing me to use the Apple
compilers to build my application, whereas I wish to use gcc.
Has anyone else out there experienced this problem? or have a solution to it
please?
I would really like to be able to build my application with gcc, but due to
this problem cannot.
...
Thank you!
Cheers,
Tobias[/code]
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Re: [osg-users] Mac OS runtime problem
Hi Stephan, I tried building both release and debug versions of OSG with the llvm compiler - The debug build had the same problem (presumably built without optimisation). ... Thank you! Cheers, Tobias -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47353#47353 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Mac OS runtime problem
Hi,
I'm building OpenSceneGraph from the head of the trunk on Mac OS 10.7 Lion
using CMake. The build works straight out of the box defaulting to the llvm
compilers.
I'm using OpenSceneGraph in a project built using gcc-mp-4.7, and so linking to
the libraries built in the above step from my project.
I'm experiencing a problem with primitive sets at runtime - Namely, a primitive
set I create causes a crash when it goes out of scope.
I've managed to boil my problem down to a very simple implementation:
Code:
int main(int argc, char *argv[])
{
osg::ref_ptrosg::PrimitiveSet p = new osg::DrawElementsUByte();
return 0;
}
When executed, with the OSG libraries built using llvm, and the program built
using gcc-mp-4.7, the following happens:
Code:
Tobys-MacBook-Pro:xxx tobiasduckworth$ ./3DRecon.app/Contents/MacOS/3DRecon
3DRecon(23649,0x7fff7612f960) malloc: *** error for object 0x10e163ec0: pointer
being freed was not allocated
*** set a breakpoint in malloc_error_break to debug
Abort trap: 6
However, if I build the program using the same compiler (llvm) as OSG, then it
runs fine.
My program uses OpenMP, so I need to use gcc to get this to compile, otherwise
I could move to llvm.
I also tried to build OSG using gcc, but this failed due to osgViewer using
Objective C.
Does anyone have any idea what might be going wrong here?
Should I be able to build OSG using llvm and my application using gcc?
Hoping someone can shed some light,
...
Thank you!
Cheers,
Tobias
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Re: [osg-users] Mac OS runtime problem
HI,
have you tried to compile your own code and osg with the llvm-gcc4.2
compiler? llvm-gcc 4.2 should include openMP. (Haven't tested that by
myself)
HTH,
Stephan
Am 26.04.12 11:09, schrieb Tobias Duckworth:
Hi,
I'm building OpenSceneGraph from the head of the trunk on Mac OS 10.7 Lion
using CMake. The build works straight out of the box defaulting to the llvm
compilers.
I'm using OpenSceneGraph in a project built using gcc-mp-4.7, and so linking
to the libraries built in the above step from my project.
I'm experiencing a problem with primitive sets at runtime - Namely, a
primitive set I create causes a crash when it goes out of scope.
I've managed to boil my problem down to a very simple implementation:
Code:
int main(int argc, char *argv[])
{
osg::ref_ptrosg::PrimitiveSet p = new osg::DrawElementsUByte();
return 0;
}
When executed, with the OSG libraries built using llvm, and the program built
using gcc-mp-4.7, the following happens:
Code:
Tobys-MacBook-Pro:xxx tobiasduckworth$ ./3DRecon.app/Contents/MacOS/3DRecon
3DRecon(23649,0x7fff7612f960) malloc: *** error for object 0x10e163ec0:
pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug
Abort trap: 6
However, if I build the program using the same compiler (llvm) as OSG, then
it runs fine.
My program uses OpenMP, so I need to use gcc to get this to compile,
otherwise I could move to llvm.
I also tried to build OSG using gcc, but this failed due to osgViewer using
Objective C.
Does anyone have any idea what might be going wrong here?
Should I be able to build OSG using llvm and my application using gcc?
Hoping someone can shed some light,
...
Thank you!
Cheers,
Tobias
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Re: [osg-users] Mac OS runtime problem
Hi Stephen, Thanks for your response. Yes I tried using llvm-gcc42 (from Macports) to build OSG yesterday - Unfortunately with the same end result. I didn't know that llvm-gcc42 includes OpenMP, this may be a solution to my problem. Thanks for the hint, I will look into it. That aside, I'd still like to understand why compiling OSG with llvm and my program with gcc causes the observed problem. Surely I shouldn't have to care which compiler the libraries I'm linking against are built with? ... Thank you! Cheers, Tobias -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47316#47316 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Mac OS runtime problem
Hi, Further to Stephan's suggestion, since llvm-gcc-4.2 supports OpenMP, I was able to get everything running using llvm-gcc-4.2. (Thanks Stephan for the info that llvm-gcc-42 now supports OpenMP) However, it still strikes me as odd that failure occurs when compiling my program with gcc and linking to OSG built with llvm. ... Thank you! Cheers, Tobias -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47319#47319 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Mac OS runtime problem
Hi Tobias, Am 26.04.12 12:15, schrieb Tobias Duckworth: Further to Stephan's suggestion, since llvm-gcc-4.2 supports OpenMP, I was able to get everything running using llvm-gcc-4.2. (Thanks Stephan for the info that llvm-gcc-42 now supports OpenMP) However, it still strikes me as odd that failure occurs when compiling my program with gcc and linking to OSG built with llvm. I have no idea. I have the suspicion, that the optimization of llvm is too aggressive (osg is compiled with -O3), but I'll have to do some more tests. cheers, Stephan ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
