OSVR-Core编译

OSVR-Core编译

OSVR-Core开源项目地址，点击这里。
编译过程中，使用到多个开源库，编译起来还是花了不少时间（跟之前vlc-android编译起来差不多，费时费力）,osvr-core不是一定要求每个人都要编译，官网提供编译好的应用程序使用，不过对于开发者来说，建议还是编译一次这个环境，一方面可以了解这个项目使用到了哪些开源项目，另一方面后续为自己的HMD设备制作plugin时遇到复杂问题，可以从源码添加log来定位问题。

编译环境说明

• 系统：win7 64位 SP1
• 编译工具：
  
  • Visual Studio 2015 update3 （官网推荐VS2013，并且明确说明VS2012版本和VS2015update1有BUG）
  • Git（官网下载）
  • CMake(>=3.0，我这里用的是最新的3.6.1，官网下载)
  • Boost库（>=1.44，这里使用的是1.61，官网下载，或我使用的上传微云网盘）
  • opencv（2.4.x，这里使用2.4.13，官网下载）
  • SDL2.0（2.0.4，官网下载）
  • 获取osvr-core源代码：
    git clone –recursive https://github.com/OSVR/OSVR-Core.git（其中”–recursive”参数同时可以拉取子模块的代码，如hidapi，jsoncpp,vrpn等）
  • 获取libfunctionality源代码：
    git clone https://github.com/OSVR/libfunctionality.git
  • 获取jsoncpp源代码：
    git clone https://github.com/open-source-parsers/jsoncpp.git

编译OSVR依赖库

• 编译libfunctionality
  
  • 打开CMake，设置源代码和生成路径，然后点击“Configure”按钮：
    
  • 生成”build“文件夹，点击”yes“：
    
  • 选择编译器，这个要根据你使用的编译器来设定，我这里用的是VS2015 Update3 64位，点击”Finish”：
    
    如果编译时有如下错误：
    
    C和CXX编译器没有找到，这个是因为你的Visual Studio 2015没有安装C/C++部分组件：
    解决办法：打开”Microsft Visual Studio Community 2015”把组件装上。
    
    
    点击“Modify”按钮后，选择”select All”,我是勾选全部组件，点击 “Next”
    
    这里更新大概要几个小时。
  • 更新完成后，再次运行CMake，点击”Configure”,返回配置完成(“Configuring done”)，在点击”Generate”，返回生成完成（Generating done），如下所示：
    
    此时，在之前设置的”build”文件夹内，就有“.sln”的VS工程文件：
    
  • 打开sln工程文件，选择”release” “x64”版本(编译osvr-core所使用到的库，都需要编译为相同类型的版本,即都为Release或都为Debug，不能有些库编译为Release，另外一些用Debug，否则会导致一些很不好定位的错误！在这里费了很多时间！建议都先编译为release版本)。然后”Build”—“Build Solution”，生成所需的库文件：
    
• 编译jsoncpp
  使用CMake编译时，需要配置上此项”JSONCPP_WITH_CMAKE_PACKAGE”:
  
  其他与上面”编译libfunctionality”的步骤一样（用Visual Studio编译时，记得选择release x64版本）。
• 编译SDL2
  使用CMake与与上面”编译libfunctionality”的步骤一样。

编译OSVR-CORE

• 配置OSVR的环境：
  
  点击”Configure”会有很多错误。接下来就逐一解决
  
  • 错误1：Could NOT find SDL2 (missing: SDL2_LIBRARY SDL2_INCLUDE_DIR SDL2_SDLMAIN_LIBRARY)
    解决办法：CMAKE里设置SDL2的相关路径：
    
  • 错误2：opencv相关错误：
    By not providing “FindOpenCV.cmake” in CMAKE_MODULE_PATH this project has
    asked CMake to find a package configuration file provided by “OpenCV”, but
    CMake did not find one.
    Could not find a package configuration file provided by “OpenCV” with any
    of the following names:
    OpenCVConfig.cmake
    opencv-config.cmake
    Add the installation prefix of “OpenCV” to CMAKE_PREFIX_PATH or set
    “OpenCV_DIR” to a directory containing one of the above files. If “OpenCV”
    provides a separate development package or SDK, be sure it has been
    installed.
    CMake Error at CMakeLists.txt:196 (message):
    BUILD_WITH_OPENCV is enabled, but OpenCV was not found! Either help CMake
    find OpenCV or disable BUILD_WITH_OPENCV.
    解决办法：设置opencv lib库路径：
    
  • 错误3：jsoncpp相关
    CMake Error at F:/Program Files/CMake/share/cmake-3.6/Modules/FindPackageHandleStandardArgs.cmake:148 (message):
    Could NOT find JsonCpp (missing: JsonCpp_INCLUDE_DIR JsonCpp_LIBRARY)
    Call Stack (most recent call first):
    F:/Program Files/CMake/share/cmake-3.6/Modules/FindPackageHandleStandardArgs.cmake:388 (_FPHSA_FAILURE_MESSAGE)
    cmake/FindJsonCpp.cmake:334 (find_package_handle_standard_args)
    CMakeLists.txt:221 (find_package)
    解决办法：
    
  • 错误4：boost相关
    CMake Warning at F:/Program Files/CMake/share/cmake-3.6/Modules/FindBoost.cmake:743 (message):
    Imported targets not available for Boost version
    Call Stack (most recent call first):
    F:/Program Files/CMake/share/cmake-3.6/Modules/FindBoost.cmake:842 (_Boost_COMPONENT_DEPENDENCIES)
    F:/Program Files/CMake/share/cmake-3.6/Modules/FindBoost.cmake:1395 (_Boost_MISSING_DEPENDENCIES)
    cmake-local/BoostTargets.cmake:25 (find_package)
    CMakeLists.txt:295 (include)
    CMake Warning at F:/Program Files/CMake/share/cmake-3.6/Modules/FindBoost.cmake:743 (message):
    Imported targets not available for Boost version
    Call Stack (most recent call first):
    F:/Program Files/CMake/share/cmake-3.6/Modules/FindBoost.cmake:842 (_Boost_COMPONENT_DEPENDENCIES)
    F:/Program Files/CMake/share/cmake-3.6/Modules/FindBoost.cmake:1395 (_Boost_MISSING_DEPENDENCIES)
    cmake-local/BoostTargets.cmake:25 (find_package)
    CMakeLists.txt:295 (include)
    CMake Warning at F:/Program Files/CMake/share/cmake-3.6/Modules/FindBoost.cmake:743 (message):
    Imported targets not available for Boost version
    Call Stack (most recent call first):
    F:/Program Files/CMake/share/cmake-3.6/Modules/FindBoost.cmake:842 (_Boost_COMPONENT_DEPENDENCIES)
    F:/Program Files/CMake/share/cmake-3.6/Modules/FindBoost.cmake:1395 (_Boost_MISSING_DEPENDENCIES)
    cmake-local/BoostTargets.cmake:25 (find_package)
    CMakeLists.txt:295 (include)
    CMake Warning at F:/Program Files/CMake/share/cmake-3.6/Modules/FindBoost.cmake:743 (message):
    Imported targets not available for Boost version
    Call Stack (most recent call first):
    F:/Program Files/CMake/share/cmake-3.6/Modules/FindBoost.cmake:842 (_Boost_COMPONENT_DEPENDENCIES)
    F:/Program Files/CMake/share/cmake-3.6/Modules/FindBoost.cmake:1395 (_Boost_MISSING_DEPENDENCIES)
    cmake-local/BoostTargets.cmake:25 (find_package)
    CMakeLists.txt:295 (include)
    CMake Warning at F:/Program Files/CMake/share/cmake-3.6/Modules/FindBoost.cmake:743 (message):
    Imported targets not available for Boost version
    Call Stack (most recent call first):
    F:/Program Files/CMake/share/cmake-3.6/Modules/FindBoost.cmake:842 (_Boost_COMPONENT_DEPENDENCIES)
    F:/Program Files/CMake/share/cmake-3.6/Modules/FindBoost.cmake:1395 (_Boost_MISSING_DEPENDENCIES)
    cmake-local/BoostTargets.cmake:25 (find_package)
    CMakeLists.txt:295 (include)
    CMake Warning at F:/Program Files/CMake/share/cmake-3.6/Modules/FindBoost.cmake:743 (message):
    Imported targets not available for Boost version
    Call Stack (most recent call first):
    F:/Program Files/CMake/share/cmake-3.6/Modules/FindBoost.cmake:842 (_Boost_COMPONENT_DEPENDENCIES)
    F:/Program Files/CMake/share/cmake-3.6/Modules/FindBoost.cmake:1395 (_Boost_MISSING_DEPENDENCIES)
    cmake-local/BoostTargets.cmake:25 (find_package)
    CMakeLists.txt:295 (include)
    CMake Error at F:/Program Files/CMake/share/cmake-3.6/Modules/FindBoost.cmake:1753 (message):
    Unable to find the requested Boost libraries.
    Unable to find the Boost header files. Please set BOOST_ROOT to the root
    directory containing Boost or BOOST_INCLUDEDIR to the directory containing
    Boost’s headers.
    Call Stack (most recent call first):
    cmake-local/BoostTargets.cmake:25 (find_package)
    CMakeLists.txt:295 (include)
    解决办法：CMake—Add Entry，然后添加BOOST_ROOT和BOOST_LIBRARYDIR变量如下：
    
    
    勾选”Boost_USE_STATIC_LIBS”
    
  • 错误5：Visual Studio 2015 编译报错：
    
  • 错误6：Visual Studio 2015 编译报错：
    
    
    
    解决办法：需要在”opencv”文件夹里，找到这3个文件，拷贝到指定路径。
    “opencv_highgui2413.dll“拷贝到”opencv\sources\build\bin\Release“路径下。
    “opencv_highgui2413.lib”和“opencv_core2413.lib”，拷贝到“opencv\sources\build\lib\release”路径下。
  • 最后编译成功：
    

测试

使用默认的json配置来启动osv_server：

点击这里下载测试程序，运行应用“osvr-palace-v0.6.12.exe”，即可，如果osvr-core没运行起来，此应用汇直接报错。接上HMD设备，然后移动HMD，分屏画面会跟着移动（当然如果没接HMD设备，启动界面上不会有分屏）。