Build Instructions

[Feneric]

Are there any special build instructions? The naïve "cake CMakeLists.txt;make" hasn't worked for me in any environment I've tried it on yet (Mac OS X 10.9.4 64 bit, Mac OS X 10.6.8 32 bit, Ubuntu Linux 14.04 64 bit). There seem to be some constants that need to be tagged as "long long" in 32 bit environments to compile properly; I've made the changes and verified that the compilations then work in both 64 and 32 bit environments, but I've yet to be able to test a full build. As for the errors themselves, they're different sorts of things in different environments, and before I go too deep down the rabbit hole I wanted to check to see if there was anything obvious I could be missing.

Is there anything I should be looking out for?

[jherico]

What branch are you working with?
Can you include a pastebin link to an error log?
On Aug 4, 2014 8:54 AM, "Eric W. Brown" [email protected] wrote:

Are there any special build instructions? The naïve "cake
CMakeLists.txt;make" hasn't worked for me in any environment I've tried it
on yet (Mac OS X 10.9.4 64 bit, Mac OS X 10.6.8 32 bit, Ubuntu Linux 14.04
64 bit). There seem to be some constants that need to be tagged as "long
long" in 32 bit environments to compile properly; I've made the changes and
verified that the compilations then work in both 64 and 32 bit
environments, but I've yet to be able to test a full build. As for the
errors themselves, they're different sorts of things in different
environments, and before I go too deep down the rabbit hole I wanted to
check to see if there was anything obvious I could be missing.

Is there anything I should be looking out for?

—
Reply to this email directly or view it on GitHub
#33.

[Feneric]

I'm just trying to build the stable branch with the end goal of trying out the sample Python scripts. Mac OS X 10.6.8 32-bit is the most convenient system for me to hook the Rift up to, but I've also got access to a current Mac OS X 10.9.4 64-bit system and a couple of Linux boxes.

It's different sorts of errors in the different environments, and nothing seemingly insurmountable, but silly looking stuff that makes me think I may be missing something.

For Mac OS X 64-bit:

In file included from /Users/eric/Projects/OculusSDK/Samples/CommonSrc/Platform/../Render/Render_GL_Device.h:29:
/Users/eric/Projects/OculusSDK/3rdParty/glew/include/GL/glew.h:90:2: error: gltypes.h included before glew.h
#error gltypes.h included before glew.h
 ^
/Users/eric/Projects/OculusSDK/3rdParty/glew/include/GL/glew.h:5631:22: error: typedef redefinition with different
      types ('unsigned int' vs 'void *')
typedef unsigned int GLhandleARB;
                     ^
/System/Library/Frameworks/OpenGL.framework/Headers/gltypes.h:65:15: note: previous definition is here
typedef void *GLhandleARB;
              ^
2 errors generated.
make[2]: *** [Samples/CommonSrc/CMakeFiles/CommonSrc.dir/Platform/OSX_Platform.mm.o] Error 1
make[1]: *** [Samples/CommonSrc/CMakeFiles/CommonSrc.dir/all] Error 2
make: *** [all] Error 2

For Ubuntu Linux 64-bit:

Linking CXX executable ../../output/OculusWorldDemo
../../output/libCommonSrc.a(Linux_Platform.cpp.o): In function `OVR::Platform::Linux::PlatformCore::determineScreenOffset(int, int*, int*)':
Linux_Platform.cpp:(.text+0xea9): undefined reference to `XineramaQueryScreens'
../../output/libCommonSrc.a(Linux_Platform.cpp.o): In function `OVR::Platform::Linux::PlatformCore::GetDisplayCount()':
Linux_Platform.cpp:(.text+0x17c2): undefined reference to `XineramaQueryScreens'
collect2: error: ld returned 1 exit status
make[2]: *** [output/OculusWorldDemo] Error 1
make[1]: *** [Samples/OculusWorldDemo/CMakeFiles/OculusWorldDemo.dir/all] Error 2
make: *** [all] Error 2

(Please note that libxinerama-dev and libxxf86vm-dev are both installed.)

For Mac OS X 32-bit it doesn't get nearly as far as the other two:

Scanning dependencies of target OculusVR
[  1%] Building CXX object LibOVR/CMakeFiles/OculusVR.dir/Src/Kernel/OVR_Alg.cpp.o
cc1plus: error: unrecognized command line option "-std=gnu++0x"
make[2]: *** [LibOVR/CMakeFiles/OculusVR.dir/Src/Kernel/OVR_Alg.cpp.o] Error 1
make[1]: *** [LibOVR/CMakeFiles/OculusVR.dir/all] Error 2
make: *** [all] Error 2

My guess is that there are a handful of prerequisites / assumptions about the build environment that I'm missing, or there's a more complex sequence that needs to be carried out to perform a full build.

[jherico]

For ubuntu error, I've updated the CMake file to include the Xinerama library for the sample code.

For the OSX 64 bit error, I'll have to take a look when I get home, however you should note that it's only failing in the sample code, not in building the main OVR_C library. You can disable the building of the samples by calling cmake with a -DOCULUS_BUILD_SAMPLES=OFF argument.

For the 32 bit build, I'm confused as to why the -std=gnu++0x argument is being added since the cmake file should only be using it in the case where you're using a GNU compiler, in which case it should work. However, the use of C++11 in the code isn't extensive so I've removed it and the parameter.

[jherico]

You should bear in mind that the Python scripts haven't been tested against the current build of the SDK in stable. The https://github.com/jherico/python-ovrsdk repository includes the binaries against which the python code was built and tested.

[Feneric]

Thanks. With your changes, Linux 64-bit builds now without any problems, and the 32-bit Mac OS X build is definitely helped. Adding in the minor changes I made to flag the constants as long longs (I'll submit these back) and disabling the samples builds on both 64- and 32-bit Mac OS X are now working too. The samples failure on 32-bit Mac OS X spews a lot of output, but appears to be right in the same neighborhood as the samples failure is with the 64-bit Mac OS X. I wouldn't be surprised if fixing one would fix the other, too.

Good to know on python-ovrsdk. It doesn't look like there are any 32-bit options there for Linux or Mac, though.