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test
` [ root@NV-ubuntu-01:/usr/share/cmake-3.5/Modules# diff -uNpr FindThreads.cmake FindThreads.cmake.bak
--- FindThreads.cmake 2018-06-25 18:03:58.570963757 +0800
+++ FindThreads.cmake.bak 2018-06-25 17:42:09.320845095 +0800
@@ -149,12 +149,12 @@ else()
set(CMAKE_HAVE_THREADS_LIBRARY)
if(NOT THREADS_HAVE_PTHREAD_ARG)
# Check if pthread functions are in normal C library

•  #CHECK_SYMBOL_EXISTS(pthread_create pthread.h CMAKE_HAVE_LIBC_CREATE)
  

•  #if(CMAKE_HAVE_LIBC_CREATE)
  

•  #  set(CMAKE_THREAD_LIBS_INIT "")
  

•  #  set(CMAKE_HAVE_THREADS_LIBRARY 1)
  

•  #  set(Threads_FOUND TRUE)
  

•  #else()
  

•  CHECK_SYMBOL_EXISTS(pthread_create pthread.h CMAKE_HAVE_LIBC_CREATE)
  

•  if(CMAKE_HAVE_LIBC_CREATE)
  

•    set(CMAKE_THREAD_LIBS_INIT "")
  

•    set(CMAKE_HAVE_THREADS_LIBRARY 1)
  

•    set(Threads_FOUND TRUE)
  

•  else()
  
     # Check for -pthread first if enabled. This is the recommended
     # way, but not backwards compatible as one must also pass -pthread
  

@@ -163,13 +163,13 @@ else()
_check_pthreads_flag()
endif ()

•  #  _check_threads_lib(pthreads pthread_create CMAKE_HAVE_PTHREADS_CREATE)
  

•    _check_threads_lib(pthreads pthread_create CMAKE_HAVE_PTHREADS_CREATE)
     _check_threads_lib(pthread  pthread_create CMAKE_HAVE_PTHREAD_CREATE)
     if(CMAKE_SYSTEM_NAME MATCHES "SunOS")
         # On sun also check for -lthread
         _check_threads_lib(thread thr_create CMAKE_HAVE_THR_CREATE)
     endif()
  

•  #endif()
  

•  endif()
  

  endif()

  _check_pthreads_flag()
  @@ -233,8 +233,3 @@ if(THREADS_FOUND AND NOT TARGET Threads:
  set_property(TARGET Threads::Threads PROPERTY INTERFACE_LINK_LIBRARIES "${CMAKE_THREAD_LIBS_INIT}")
  endif()
  endif()

-if (Threads_FOUND )

•   message(STATUS "xiachsh debug Thread found ")
  

-endif()
](url)root@NV-ubuntu-01:/usr/share/cmake-3.5/Modules#
`