Problem while running Box 2d

karankumar1609 · wrote on 8 Jul 2011, 19:42

not i installed the CMake s/w and trying to execute my box-2d code., but which configuration shpuld be used? m using windows-7

loladiro · wrote on 8 Jul 2011, 19:43

Have you built Box2D according to the instructions in the source package?

karankumar1609 · wrote on 8 Jul 2011, 19:46

these are the instructions., but its for visual studio and unix., cant find for Qt for windows.

Box2D uses CMake to describe the build in a platform independent manner.

First download and install cmake from cmake.org

For Microsoft Visual Studio:

Run the cmake-gui
Set the source directory to the path of Box2D on your PC (the folder that contains this file).
Set the build directory to be the path of Box2D/Build on your PC.
Press the Configure button and select your version of Visual Studio.
You may have to press the Configure button again.
Press the Generate button.
Open Box2D/Build/Box2D.sln.
Set the Testbed or HelloWorld as your startup project.
Press F5 or Ctrl-F5 to run.

For Unix platforms, say the following on a terminal: (Replace $BOX2DPATH with the directory where this file is located.)
cd $BOX2DPATH/Build
cmake -DBOX2D_INSTALL=ON -DBOX2D_BUILD_SHARED=ON ..
make
make install
You might want to add -DCMAKE_INSTALL_PREFIX=/opt/Box2D or similar to the cmake call to change the installation location. make install might need sudo.

loladiro · wrote on 8 Jul 2011, 19:51

Well on windows you have the chance to use either visual studio or MinGW in which case you need to follow the instructions for unix, replacing make with mingw32-make (either use the complete path or have it in your PATH environment variable)

karankumar1609 · wrote on 8 Jul 2011, 19:58

actually box 2d already have a cmake file., but i want to know how to build it for Qt .
i use visual studio 10 version to cmake box2d code., but unable to generate cmake file.,
i think there is no other better way just to use existing cmake file.,

so atlast i have a previous cmake file., thn how to use this?

loladiro · wrote on 8 Jul 2011, 20:13

I believe you have everything you need, if you just follow the instructions in the original blog post.

karankumar1609 · wrote on 8 Jul 2011, 20:22

actually the code provided in the original post is for linux., and i am working on windows. thats what the problem is., and i dnno how to make it work in windows..

loladiro · wrote on 8 Jul 2011, 20:30

Now we're getting closer to the problem. What exactly is the error you get when trying to build it on windows?

karankumar1609 · wrote on 8 Jul 2011, 20:38

well the file he just contain a pro and a main.cpp file.,
.pro file contains
SOURCES += main.cpp
INCLUDEPATH += /home/ahanssen/Box2D_v2.0.1/Box2D/Include
LIBPATH += /home/ahanssen/Box2D_v2.0.1/Box2D/Source/Gen/float
LIBS += -lbox2d

and i think the include path and the lib path create error for me. coz in windows path not start with '/' (root.), and even i am unable to find "include" folder in my box2d directory as mentioned in INCLUDEPATH+= .../Include

and the error i got while compiling is :
box2d.h no such file or directory , bodydef was not declared ....... etc.... etc

loladiro · wrote on 8 Jul 2011, 20:43

You have to adjust the paths of course. The include folder will be created when you build the library.

karankumar1609 · wrote on 8 Jul 2011, 20:49

i had made a change and copy my box2d folder in my working folder.,

SOURCES += main.cpp
INCLUDEPATH += $$PWD/Box2D_v2.0.1/Box2D/Include
LIBPATH += $$PWD/Box2D_v2.0.1/Box2D/Source/Gen/float
LIBS += -lbox2d

but the problem still occures..