While working on my GDK for Ruby I had to use SWIG to create a C++ extension to rub. The following are the errors encountered and their solutions:
Error:
/usr/local/lib/site_ruby/1.8/i486-linux/calvarygdk.so: /usr/local/lib/site_ruby/1.8/i486-linux/calvarygdk.so: undefined symbol: _ZTV6Vector - /usr/local/lib/site_ruby/1.8/i486-linux/calvarygdk.so (LoadError)
from test.rb:1
Solution:
I did not have the Vector.cpp file in the same folder as the .i file.
Error:
test.rb:9: uninitialized constant Calvarygdk::Quaternion (NameError)
Solution:
I forgot to put a % instead of # at the beginning of the line here in the .i file:
==============================
/* File : example.i */
%module calvarygdk
%{
#include "Vector.h"
#include "Quaternion.h"
%}
/* Let's just grab the original header file here */
%include "Vector.h"
%include "Quaternion.h" /* <--------------------------- Right here was the problem, I had # instead of % */
==============================
Error:
gcc -shared -L"/usr/lib" -o calvarygdk.so calvarygdk_wrap.o Vector.o Quaternion.o DefaultTriMeshData.o -lruby1.8 -lsupc++ -lpthread -ldl -lcrypt -lm -lc
gcc: DefaultTriMeshData.o: No such file or directory
make: *** [calvarygdk.so] Error 1
Solution
Changed the object line to point to a real .o file. In this case a previously generated .o file for DefaultTriMeshData
===========Makefile==========
OBJS = calvarygdk_wrap.o Vector.o Quaternion.o graphics/DefaultTriMeshData.o
=============================
Error:
g++ -fPIC -Wall -g -O2 -fPIC -I. -I/usr/lib/ruby/1.8/i486-linux -I/usr/lib/ruby/1.8/i486-linux -I../ -I/home/jtarquino/irrlicht-1.0/include -I"/usr/X11R6/include" -L"/usr/X11R6/lib" -L"/home/jtarquino/irrlicht-1.0/lib/Linux" -lIrrlicht -lGL -lGLU -lXxf86vm -lXext -lX11 -c ../Quaternion.cpp
g++: -lIrrlicht: linker input file unused because linking not done
g++: -lGL: linker input file unused because linking not done
g++: -lGLU: linker input file unused because linking not done
g++: -lXxf86vm: linker input file unused because linking not done
g++: -lXext: linker input file unused because linking not done
g++: -lX11: linker input file unused because linking not done
gcc -shared -L"/usr/lib" -o calvarygdk.so calvarygdk_wrap.o Vector.o Quaternion.o DefaultTriMeshData.o -lruby1.8 -lsupc++ -lpthread -ldl -lcrypt -lm -lc
gcc: DefaultTriMeshData.o: No such file or directory
make: *** [calvarygdk.so] Error 1
Solutions":
The lib problem with gcc was solved by setting the lib path of the makefile and the libs as:
========Makefile=============
LIBPATH = -L"$(libdir)" -L"/usr/X11R6/lib" -L"/home/jtarquino/irrlicht-1.0/lib/Linux"
LIBS = $(LIBRUBYARG_SHARED) -lsupc++ -lpthread -ldl -lcrypt -lm -lc -lIrrlicht -lGL -lGLU -lXxf86vm -lXext -lX11
=============================
Also, I had to put the DefaultTriMeshData in the folder manually, I don't know why. Th object was in /home/jtarquino/cjptgames/.objs/calvaryfx/src/graphics.
Error:
g++ -fPIC -g -O2 -lpthread -I. -I/usr/lib/ruby/1.8/i486-linux -I/usr/lib/ruby/1.8/i486-linux -I../ -I/home/jtarquino/irrlicht-1.0/include -I"/usr/X11R6/include" -c calvarygdk_wrap.cxx
calvarygdk_wrap.cxx: In function `VALUE _wrap_TriMeshData_setIndices(int,
VALUE*, long unsigned int)':
calvarygdk_wrap.cxx:3731: warning: converting to non-pointer type `int' from
NULL
calvarygdk_wrap.cxx:3736: error: invalid conversion from `int' to `void*'
calvarygdk_wrap.cxx:3741: error: invalid conversion from `int' to `void*'
calvarygdk_wrap.cxx: In function `VALUE
_wrap_new_DefaultTriMeshData__SWIG_1(int, VALUE*, long unsigned int)':
calvarygdk_wrap.cxx:3922: warning: converting to non-pointer type `int' from
NULL
calvarygdk_wrap.cxx:3948: error: invalid conversion from `int' to `void*'
calvarygdk_wrap.cxx:3953: error: invalid conversion from `int' to `void*'
calvarygdk_wrap.cxx: In function `VALUE
_wrap_DefaultTriMeshData_setIndices(int, VALUE*, long unsigned int)':
calvarygdk_wrap.cxx:4060: warning: converting to non-pointer type `int' from
NULL
calvarygdk_wrap.cxx:4065: error: invalid conversion from `int' to `void*'
calvarygdk_wrap.cxx:4070: error: invalid conversion from `int' to `void*'
make: *** [calvarygdk_wrap.o] Error 1
Solution:
When I looked at the generated code at line with the error I saw an invalid pointer conversion. In the .i file I was freeing the object as and int
instead of a int*:
=============.i file==============
%typemap(freearg) int * {
free((int*) $1); /* This was (int) $1 before
}
==================================
Error:
../irr/GraphicBoundingBoxIrr.h:12: Error: Nothing known about namespace 'irr'
../irr/GraphicBoundingBoxIrr.h:13: Error: Nothing known about namespace 'irr::scene'
../irr/GraphicBoundingBoxIrr.h:14: Error: Nothing known about namespace 'irr::video'
../irr/GraphicIrr.h:13: Error: Nothing known about namespace 'irr'
../irr/GraphicIrr.h:14: Error: Nothing known about namespace 'irr::scene'
../irr/GraphicIrr.h:15: Error: Nothing known about namespace 'irr::video'
../irr/AnimatedGraphicIrr.h:13: Error: Nothing known about namespace 'irr'
../irr/AnimatedGraphicIrr.h:14: Error: Nothing known about namespace 'irr::scene'
../irr/AnimatedGraphicIrr.h:15: Error: Nothing known about namespace 'irr::video'
../irr/GraphicsEngineIrr.h:11: Error: Nothing known about namespace 'irr'
../irr/GraphicsEngineIrr.h:12: Error: Nothing known about namespace 'irr::scene'
../irr/GraphicsEngineIrr.h:13: Error: Nothing known about namespace 'irr::video'
../irr/GraphicsFactoryIrr.h:14: Error: Nothing known about namespace 'irr'
../irr/GraphicsFactoryIrr.h:15: Error: Nothing known about namespace 'irr::scene'
../irr/GraphicsFactoryIrr.h:16: Error: Nothing known about namespace 'irr::video'
../irr/UtilIrr.h:11: Error: Nothing known about namespace 'irr'
../irr/UtilIrr.h:12: Error: Nothing known about namespace 'irr::scene'
../irr/UtilIrr.h:13: Error: Nothing known about namespace 'irr::core'
../irr/ResourceIrr.h:11: Error: Nothing known about namespace 'irr'
../irr/ResourceIrr.h:12: Error: Nothing known about namespace 'irr::scene'
../irr/ResourceIrr.h:13: Error: Nothing known about namespace 'irr::video'
../irr/GraphicsEngineIrr.h:19: Warning(401): Nothing known about base class 'IEventReceiver'. Ignored.
Solution:
I included in the .i file the Irrlicht.h file that was being included in every file.
=========================================================================================
test.rb:14:in `initialize': in method 'initialize', argument 1 of type 'PhyFactoryOde *' (ObjectPreviouslyDeleted)
from test.rb:14:in `run_game'
from test.rb:55
Solution: avoided the name initialized for the phy factory. Also for the phy engine, which was being started by the factory inside the
initialize method.
The following are free (MIT license) mailing labels and letter templates for jasperreports that you can download and use in jasperserver and/or ireport: Update 3/15/2011 : I moved the Mail templates zip file here . Please consider making a small donation if the templates are of help to you, Thank you! If you need more information on how to use those templates please leave a comment in the blog.
Comments