的CMake未能找到主題包神祕的錯誤消息

我想有以下配置的CMakeLists.txt：的CMake未能找到主題包神祕的錯誤消息

cmake_minimum_required(VERSION 3.2)                          
project(MotionBlow CXX) 
find_package(Threads REQUIRED)                          
find_package(Boost COMPONENTS system program_options REQUIRED)                  
include(gtest.cmake) 

add_executable(motionBlow src/blow.cpp) 
target_include_directories(motionBlow PUBLIC include) 
target_link_libraries(motionBlow RTIMULib ${Boost_LIBRARIES}) 
set_property(TARGET motionBlow PROPERTY CXX_STANDARD 14) 

add_executable(chat_client src/chat_client.cpp) 
target_include_directories(chat_client PUBLIC include) 
target_link_libraries(chat_client ${Boost_LIBRARIES} Threads::Threads) 
set_property(TARGET chat_client PROPERTY CXX_STANDARD 14) 

add_executable(chat_server src/chat_server.cpp) 
target_include_directories(chat_server PUBLIC include) 
target_link_libraries(chat_server ${Boost_LIBRARIES} Threads::Threads) 
set_property(TARGET chat_server PROPERTY CXX_STANDARD 14) 

enable_testing() 

add_executable(matrixTest test/MatrixTest.cpp src/Matrix.cpp) 
target_include_directories(matrixTest PUBLIC include ${GTEST_INCLUDE_DIR}) 
target_link_libraries(matrixTest ${GTEST_LIBRARY} Threads::Threads) 
set_property(TARGET matrixTest PROPERTY CXX_STANDARD 14)

在ubunutu 16.04它工作正常，但都與Raspbian 8.0/3.6的CMake PI樹莓.2在Ubuntu 15.10/CMake的3.2.2，我得到

CMake Error at /usr/share/cmake-3.2/Modules/FindPackageHandleStandardArgs.cmake:138 (message): 
    Could NOT find Threads (missing: Threads_FOUND) 
Call Stack (most recent call first): 
    /usr/share/cmake-3.2/Modules/FindPackageHandleStandardArgs.cmake:374 (_FPHSA_FAILURE_MESSAGE) 
    /usr/share/cmake-3.2/Modules/FindThreads.cmake:204 (FIND_PACKAGE_HANDLE_STANDARD_ARGS) 
    CMakeLists.txt:4 (find_package)

不幸的是，錯誤日誌只包含這個：

Determining if files pthread.h exist failed with the following output: 

Source: 
/* */ 
#include <pthread.h> 


int main(void){return 0;}

所以我不知道如何解決這個問題。有任何想法嗎？我的CMakelists.txt是否丟失了某些東西，或者我應該丟失一個包？

來源

2016-11-01 morynicz

以你的代碼我複製你的錯誤，它似乎是從這個後續的錯誤：

-- Looking for include file pthread.h 
CMake Error at /usr/share/cmake-3.2/Modules/CheckIncludeFiles.cmake:74 (try_compile): 
    Unknown extension ".c" for file 
    try_compile() works only for enabled languages. Currently these are: 

    CXX 

    See project() command to enable other languages.

兩個可能的解決方案：

添加C到項目中的語言：
```
project(MotionBlow C CXX) 
```

添加.c EXTENS離子有效的C++文件：

MotionBlowMakeRulesOverwrite.cmake

list(APPEND CMAKE_CXX_SOURCE_FILE_EXTENSIONS c)

的CMakeLists.txt

cmake_minimum_required(VERSION 3.2) 
set(CMAKE_USER_MAKE_RULES_OVERRIDE "MotionBlowMakeRulesOverwrite.cmake") 
project(MotionBlow CXX)

如果沒有這個工程，檢查pthread安裝：

個
sudo apt-get install libpthread-stubs0-dev

參考

來源

2016-11-01 20:09:57 Florian

中添加C的工作，但只有RM後-rf'ing該死的cmake生成的文件（我嘗試添加C幾次之前）。在此之前，即使是有政策的人也沒有這樣做。無論如何，謝謝！ – morynicz

的CMake未能找到主題包神祕的錯誤消息

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