remove obsolete _clhep_check_for_pthread macro

cmake/Modules/ClhepVariables.cmake

@@ -196,33 +196,6 @@ macro( _clhep_check_cxxstd )
   endif()
 endmacro( _clhep_check_cxxstd )
 
-macro( _clhep_check_for_pthread )
-  message( FATAL_ERROR "_clhep_check_for_pthread should no longer be used. CLHEP now requires gcc 4.8 or later with c++11 or later.")
-  ##message(STATUS "_clhep_check_for_pthread debug: CMAKE_CXX_FLAGS: ${CMAKE_CXX_FLAGS}")
-  set( HAVE_STDCXX )
-  if( NOT "${CMAKE_CXX_FLAGS}" STREQUAL "" )
-    string(REGEX REPLACE " " ";" flag_list ${CMAKE_CXX_FLAGS})
-    FOREACH(flag ${flag_list})    
-       #message(STATUS "_clhep_check_for_pthread debug: found flag ${flag}" )
-       if( ${flag} STREQUAL "-std=c++0x" )
-	 message( FATAL_ERROR "CLHEP must be built with c++11 or later enabled")
-       elseif( ${flag} STREQUAL "-std=c++11" )
-         _clhep_verify_cxx11()
-       elseif( ${flag} STREQUAL "-std=c++1y" )
-         _clhep_verify_cxx1y()
-       elseif( ${flag} STREQUAL "-std=c++14" )
-         _clhep_verify_cxx14()
-       endif()
-       message(STATUS "${flag} ${HAVE_STDCXX}")
-    ENDFOREACH(flag)
-    if( DEFINED HAVE_STDCXX )
-	set( CMAKE_CXX_FLAGS "-pthread ${CMAKE_CXX_FLAGS}" )
-    endif()
-    #message(STATUS "_clhep_check_for_pthread debug: HAVE_STDCXX ${HAVE_STDCXX}")
-    message(STATUS "_clhep_check_for_pthread debug: CMAKE_CXX_FLAGS: ${CMAKE_CXX_FLAGS}")
-  endif()
-endmacro( _clhep_check_for_pthread )
-
 macro( clhep_set_compiler_flags )
   ##message(STATUS "incoming cmake build type is ${CMAKE_BUILD_TYPE}")
   if(NOT CMAKE_BUILD_TYPE)
@@ -230,12 +203,8 @@ macro( clhep_set_compiler_flags )
   endif()
   ##message(STATUS "clhep_set_compiler_flags debug: CMAKE_CXX_FLAGS: ${CMAKE_CXX_FLAGS}")
   message(STATUS "cmake build type is ${CMAKE_BUILD_TYPE}")
-  #if( CLHEP_BUILD_CXXSTD )
      _clhep_check_cxxstd()
      message(STATUS "enable c++11 extensions: ${CMAKE_CXX_FLAGS}")
-  #else()
-  #   _clhep_check_for_pthread()
-  #endif()
   if( CLHEP_DEBUG_MESSAGES )
     message(STATUS "clhep_set_compiler_flags debug: CMAKE_CXX_FLAGS: ${CMAKE_CXX_FLAGS}")
     message(STATUS "clhep_set_compiler_flags debug: cmake compilers ${CMAKE_CXX_COMPILER} ${CMAKE_C_COMPILER}")