explict support for the Intel compiler

cmake/Modules/ClhepVariables.cmake

@@ -108,7 +108,13 @@ endmacro( _clhep_verify_cxx0x )
 macro( _clhep_verify_cxx11 )
   if( ${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang" )
     if( CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.3 )
-      message( FATAL_ERROR "c++11 extension is not available for ${CMAKE_CXX_COMPILER_ID}${CMAKE_CXX_COMPILER_VERSION}")
+      message( FATAL_ERROR "c++11 extension is not available for ${CMAKE_CXX_COMPILER_ID} ${CMAKE_CXX_COMPILER_VERSION}")
+    else()
+      set( HAVE_STDCXX true )
+    endif()
+  elseif( ${CMAKE_CXX_COMPILER_ID} STREQUAL "Intel" )
+    if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 12.0)
+      message( FATAL_ERROR "c++11 extension is not available for ${CMAKE_CXX_COMPILER_ID} ${CMAKE_CXX_COMPILER_VERSION}")
     else()
       set( HAVE_STDCXX true )
     endif()
@@ -132,6 +138,13 @@ macro( _clhep_verify_cxx1y )
     else()
       set( HAVE_STDCXX true )
     endif()
+  elseif( ${CMAKE_CXX_COMPILER_ID} STREQUAL "Intel" )
+      message( STATUS "COMPILER_VERSION_MAJOR is ${COMPILER_VERSION_MAJOR}")
+    if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 15.0)
+      message( FATAL_ERROR "c++11 extension is not available for ${CMAKE_CXX_COMPILER_ID} ${CMAKE_CXX_COMPILER_VERSION}")
+    else()
+      set( HAVE_STDCXX true )
+    endif()
   elseif(CMAKE_COMPILER_IS_GNUCXX)
     if( CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.9 )
       message( FATAL_ERROR "c++1y extension is not available for ${CMAKE_CXX_COMPILER}")
@@ -150,6 +163,13 @@ macro( _clhep_verify_cxx14 )
     else()
       set( HAVE_STDCXX true )
     endif()
+  elseif( ${CMAKE_CXX_COMPILER_ID} STREQUAL "Intel" )
+      message( STATUS "COMPILER_VERSION_MAJOR is ${COMPILER_VERSION_MAJOR}")
+    if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 16.0)
+      message( FATAL_ERROR "c++11 extension is not available for ${CMAKE_CXX_COMPILER_ID} ${CMAKE_CXX_COMPILER_VERSION}")
+    else()
+      set( HAVE_STDCXX true )
+    endif()
   elseif(CMAKE_COMPILER_IS_GNUCXX)
     if( CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.9 )
       message( FATAL_ERROR "c++14 extension is not available for ${CMAKE_CXX_COMPILER}")
@@ -189,6 +209,8 @@ macro( _clhep_check_cxxstd )
   if( DEFINED HAVE_STDCXX )
     if( ${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang" )
 	set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CLHEP_BUILD_CXXSTD} -pthread" )
+    elseif( ${CMAKE_CXX_COMPILER_ID} STREQUAL "Intel" )
+	set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CLHEP_BUILD_CXXSTD} -pthread" )
     elseif(CMAKE_COMPILER_IS_GNUCXX)
 	set( CMAKE_CXX_FLAGS "${CLHEP_BUILD_CXXSTD} -pthread ${CMAKE_CXX_FLAGS} -D_GNU_SOURCE" )
     else()
@@ -237,13 +259,19 @@ macro( clhep_set_compiler_flags )
   #else()
   #   _clhep_check_for_pthread()
   #endif()
-  #message(STATUS "clhep_set_compiler_flags debug: CMAKE_CXX_FLAGS: ${CMAKE_CXX_FLAGS}")
-  #message(STATUS "cmake compilers ${CMAKE_CXX_COMPILER} ${CMAKE_C_COMPILER}")
+  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}")
+  endif( CLHEP_DEBUG_MESSAGES )
   get_filename_component(clhep_cxx_compiler ${CMAKE_CXX_COMPILER} NAME)
   get_filename_component(clhep_c_compiler ${CMAKE_C_COMPILER} NAME)
-  #message(STATUS "using compilers ${clhep_cxx_compiler} ${clhep_c_compiler}")
+  if( CLHEP_DEBUG_MESSAGES )
+    message(STATUS "using compilers ${clhep_cxx_compiler} ${clhep_c_compiler}")
+  endif( CLHEP_DEBUG_MESSAGES )
   if( ${clhep_c_compiler} STREQUAL "clang" )
     set(CMAKE_C_FLAGS "-O -pedantic -Wall ${CMAKE_C_FLAGS}")
+  elseif( ${CMAKE_CXX_COMPILER_ID} STREQUAL "Intel" )
+    set(CMAKE_C_FLAGS "-O -ansi -pedantic -Wall {CMAKE_C_FLAGS}")
   elseif( CMAKE_COMPILER_IS_GNUCC )
     set(CMAKE_C_FLAGS "-O -ansi -pedantic -Wall -D_GNU_SOURCE ${CMAKE_C_FLAGS}")
   endif()