我正在尝试在我的 OS X 10.10.5 上编译VRPN库。
我使用 :设置了cmake 配置ccmake ../vrpn。当我尝试配置项目时，出现以下错误：
CMake Error at /usr/local/Cellar/cmake/3.4.0/share/cmake/Modules/Platform/Darwin.cmake:76 (message):
CMAKE_OSX_DEPLOYMENT_TARGET is '10.10' but CMAKE_OSX_SYSROOT:
""
is not set to a MacOSX SDK with a recognized version. Either set
CMAKE_OSX_SYSROOT to a valid SDK or set CMAKE_OSX_DEPLOYMENT_TARGET to
empty.
Call Stack (most recent call first):
/usr/local/Cellar/cmake/3.4.0/share/cmake/Modules/CMakeSystemSpecificInformation.cmake:36 (include)
CMakeLists.txt:3 (project)
CMake Error: Internal CMake error, TryCompile configure of cmake failed
最终 CMake 错误，cmake 的 TryCompile 配置失败
我在配置中看到了变量：
CMAKE_OSX_DEPLOYMENT_TARGET 10.10
尝试再次配置项目时，我收到以下消息以及上一个错误：
CMAKE_OSX_DEPLOYMENT_TARGET is '10.10' but the matching SDK does not exist
at:
"/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk"
Instead using SDK:
"/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk".
显然，问题在于默认的 cmake 配置设置了错误的 SDK 版本。
我将版本更改为10.11：
CMAKE_OSX_DEPLOYMENT_TARGET 10.11
我CMAKE_OSX_SYSROOT根据需要设置：
CMAKE_OSX_SYSROOT /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk
配置很好，但随后出现以下错误：
Could NOT find Threads (missing: Threads_FOUND)
令我惊讶的是，在另一个 CMakeLists.txt 上，我尝试获取 Threads 库并且 cmake 执行很好：
cmake_minimum_required (VERSION 3.4)
find_package(Threads REQUIRED)
我认为问题在于自定义CMAKE_OSX_SYSROOT并使CMAKE_OSX_DEPLOYMENT_TARGETThreads 包无法找到。但是每次我尝试从配置中删除CMAKE_OSX_DEPLOYMENT_TARGETand时，我都会收到第一条错误消息，并且会重置为.CMAKE_OSX_SYSROOTccmakeCMAKE_OSX_DEPLOYMENT_TARGET10.10
你有任何信息/测试可以尝试解决这个问题吗？