Develop intel split (#3722)

* Split intel compiler flags into sub-folders
* Update Intel options for warnings
* Mostly CMake, Autotools needs additional work

3 files changed, 101 insertions, 47 deletions

diff --git a/config/cmake/HDFCXXCompilerFlags.cmake b/config/cmake/HDFCXXCompilerFlags.cmake
index 13f712d..dd120c9 100644
--- a/config/cmake/HDFCXXCompilerFlags.cmake
+++ b/config/cmake/HDFCXXCompilerFlags.cmake
@@ -21,7 +21,7 @@ message (VERBOSE "Warnings Configuration: CXX default: ${CMAKE_CXX_FLAGS}")
 #-----------------------------------------------------------------------------
 # Compiler specific flags : Shouldn't there be compiler tests for these
 #-----------------------------------------------------------------------------
-if (WIN32 AND CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
+if (WIN32 AND (CMAKE_CXX_COMPILER_ID STREQUAL "Intel" OR CMAKE_CXX_COMPILER_ID MATCHES "IntelLLVM"))
   set (_INTEL_WINDOWS 1)
 endif ()
 
@@ -130,16 +130,16 @@ else ()
   # warnings that are emitted. If you need it, add it at configure time.
   if (CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
     if (_INTEL_WINDOWS)
-      ADD_H5_FLAGS (HDF5_CMAKE_CXX_FLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/win-general")
+      ADD_H5_FLAGS (HDF5_CMAKE_CXX_FLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/classic/win-general")
     else ()
-      ADD_H5_FLAGS (HDF5_CMAKE_CXX_FLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/general")
+      ADD_H5_FLAGS (HDF5_CMAKE_CXX_FLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/classic/general")
     endif()
     if (NOT _INTEL_WINDOWS)
       if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 15.0)
-        ADD_H5_FLAGS (H5_CXXFLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/15")
+        ADD_H5_FLAGS (H5_CXXFLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/classic/15")
       endif()
       if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 18.0)
-        ADD_H5_FLAGS (H5_CXXFLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/18")
+        ADD_H5_FLAGS (H5_CXXFLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/classic/18")
       endif()
     endif()
   elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
@@ -149,7 +149,13 @@ else ()
       ADD_H5_FLAGS (HDF5_CMAKE_CXX_FLAGS "${HDF5_SOURCE_DIR}/config/gnu-warnings/cxx-general")
       ADD_H5_FLAGS (H5_CXXFLAGS "${HDF5_SOURCE_DIR}/config/gnu-warnings/cxx-error-general")
     endif ()
-  elseif (CMAKE_CXX_COMPILER_ID MATCHES "IntelLLVM" OR CMAKE_CXX_COMPILER_ID MATCHES "[Cc]lang")
+  elseif (CMAKE_CXX_COMPILER_ID MATCHES "IntelLLVM")
+    if (_INTEL_WINDOWS)
+      ADD_H5_FLAGS (HDF5_CMAKE_CXX_FLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/oneapi/win-general")
+    else ()
+      ADD_H5_FLAGS (HDF5_CMAKE_CXX_FLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/oneapi/general")
+    endif()
+  elseif (CMAKE_CXX_COMPILER_ID MATCHES "[Cc]lang")
     ADD_H5_FLAGS (HDF5_CMAKE_CXX_FLAGS "${HDF5_SOURCE_DIR}/config/clang-warnings/general")
   elseif (CMAKE_CXX_COMPILER_ID STREQUAL "PGI")
     list (APPEND HDF5_CMAKE_CXX_FLAGS "-Minform=inform")
@@ -164,18 +170,28 @@ endif ()
 if (HDF5_ENABLE_DEV_WARNINGS)
   message (STATUS "....HDF5 developer group warnings are enabled")
   if (CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
-    ADD_H5_FLAGS (H5_CXXFLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/developer-general")
+    if (_INTEL_WINDOWS)
+      ADD_H5_FLAGS (H5_CXXFLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/classic/win-developer-general")
+    else ()
+      ADD_H5_FLAGS (H5_CXXFLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/classic/developer-general")
+    endif()
   elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
     # Use the C warnings as CXX warnings are the same
     ADD_H5_FLAGS (H5_CXXFLAGS "${HDF5_SOURCE_DIR}/config/gnu-warnings/developer-general")
-  elseif (CMAKE_CXX_COMPILER_ID MATCHES "IntelLLVM" OR CMAKE_CXX_COMPILER_ID MATCHES "[Cc]lang")
+  elseif (CMAKE_CXX_COMPILER_ID MATCHES "IntelLLVM")
+    if (_INTEL_WINDOWS)
+      ADD_H5_FLAGS (H5_CXXFLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/oneapi/win-developer-general")
+    else ()
+      ADD_H5_FLAGS (H5_CXXFLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/oneapi/developer-general")
+    endif()
+  elseif (CMAKE_CXX_COMPILER_ID MATCHES "[Cc]lang")
     ADD_H5_FLAGS (H5_CXXFLAGS "${HDF5_SOURCE_DIR}/config/clang-warnings/developer-general")
   endif ()
 else ()
   if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
     # Use the C warnings as CXX warnings are the same
     ADD_H5_FLAGS (H5_CXXFLAGS "${HDF5_SOURCE_DIR}/config/gnu-warnings/no-developer-general")
-  elseif (CMAKE_CXX_COMPILER_ID MATCHES "IntelLLVM" OR CMAKE_CXX_COMPILER_ID MATCHES "[Cc]lang")
+  elseif (CMAKE_CXX_COMPILER_ID MATCHES "[Cc]lang")
     ADD_H5_FLAGS (H5_CXXFLAGS "${HDF5_SOURCE_DIR}/config/clang-warnings/no-developer-general")
   endif ()
 endif ()
@@ -307,6 +323,8 @@ if (HDF5_ENABLE_SYMBOLS MATCHES "YES")
   if (CMAKE_CXX_COMPILER_LOADED)
     if (CMAKE_CXX_COMPILER_ID STREQUAL "Intel" AND NOT _INTEL_WINDOWS)
       set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g")
+    elseif (CMAKE_C_COMPILER_ID MATCHES "IntelLLVM" AND NOT _INTEL_WINDOWS)
+      set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g")
     elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
       set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g")
     endif ()
@@ -315,6 +333,8 @@ elseif (HDF5_ENABLE_SYMBOLS MATCHES "NO")
   if (CMAKE_CXX_COMPILER_LOADED)
     if (CMAKE_CXX_COMPILER_ID STREQUAL "Intel" AND NOT _INTEL_WINDOWS)
       set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wl,-s")
+    elseif (CMAKE_CXX_COMPILER_ID MATCHES "IntelLLVM" AND NOT _INTEL_WINDOWS)
+       set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wl,-s")
     elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
       set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -s")
     endif ()
diff --git a/config/cmake/HDFCompilerFlags.cmake b/config/cmake/HDFCompilerFlags.cmake
index a6bce98..e7b9337 100644
--- a/config/cmake/HDFCompilerFlags.cmake
+++ b/config/cmake/HDFCompilerFlags.cmake
@@ -9,8 +9,8 @@
 # If you do not have access to either file, you may request a copy from
 # help@hdfgroup.org.
 #
-set(CMAKE_C_STANDARD 99)
-set(CMAKE_C_STANDARD_REQUIRED TRUE)
+set (CMAKE_C_STANDARD 99)
+set (CMAKE_C_STANDARD_REQUIRED TRUE)
 
 set (CMAKE_C_FLAGS "${CMAKE_C99_STANDARD_COMPILE_OPTION} ${CMAKE_C_FLAGS}")
 set (CMAKE_C_FLAGS "${CMAKE_C_SANITIZER_FLAGS} ${CMAKE_C_FLAGS}")
@@ -18,45 +18,45 @@ message (VERBOSE "Warnings Configuration: C default: ${CMAKE_C_FLAGS}")
 #-----------------------------------------------------------------------------
 # Compiler specific flags : Shouldn't there be compiler tests for these
 #-----------------------------------------------------------------------------
-if(WIN32 AND CMAKE_C_COMPILER_ID STREQUAL "Intel")
-  set(_INTEL_WINDOWS 1)
-endif()
+if (WIN32 AND (CMAKE_C_COMPILER_ID STREQUAL "Intel" OR CMAKE_C_COMPILER_ID MATCHES "IntelLLVM"))
+  set (_INTEL_WINDOWS 1)
+endif ()
 
-if(WIN32 AND CMAKE_C_COMPILER_ID MATCHES "[Cc]lang" AND "x${CMAKE_C_SIMULATE_ID}" STREQUAL "xMSVC")
-  set(_CLANG_MSVC_WINDOWS 1)
-endif()
+if (WIN32 AND CMAKE_C_COMPILER_ID MATCHES "[Cc]lang" AND "x${CMAKE_C_SIMULATE_ID}" STREQUAL "xMSVC")
+  set (_CLANG_MSVC_WINDOWS 1)
+endif ()
 
 # Disable deprecation warnings for standard C functions.
 # really only needed for newer versions of VS, but should
 # not hurt other versions, and this will work into the
 # future
-if(MSVC OR _INTEL_WINDOWS OR _CLANG_MSVC_WINDOWS)
-  add_definitions(-D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE)
-endif()
+if (MSVC OR _INTEL_WINDOWS OR _CLANG_MSVC_WINDOWS)
+  add_definitions (-D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE)
+endif ()
 
-if(MSVC)
-  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -stack:10000000")
-endif()
+if (MSVC)
+  set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -stack:10000000")
+endif ()
 
 # MSVC 14.28 enables C5105, but the Windows SDK 10.0.18362.0 triggers it.
-if(CMAKE_C_COMPILER_ID STREQUAL "MSVC" AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 19.28)
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -wd5105")
-endif()
+if (CMAKE_C_COMPILER_ID STREQUAL "MSVC" AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 19.28)
+  set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -wd5105")
+endif ()
 
 if(_CLANG_MSVC_WINDOWS AND "x${CMAKE_C_COMPILER_FRONTEND_VARIANT}" STREQUAL "xGNU")
   set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Xlinker -stack:20000000")
 endif()
 
-if(CMAKE_C_COMPILER_ID STREQUAL "NVHPC" )
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Minform=warn")
+if (CMAKE_C_COMPILER_ID STREQUAL "NVHPC" )
+  set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Minform=warn")
   if (NOT ${HDF_CFG_NAME} MATCHES "Debug" AND NOT ${HDF_CFG_NAME} MATCHES "Developer")
     if (NOT ${HDF_CFG_NAME} MATCHES "RelWithDebInfo")
-      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -s")
+      set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -s")
     endif ()
   else ()
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Mbounds -g")
+    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Mbounds -g")
   endif ()
-endif()
+endif ()
 
 if (CMAKE_COMPILER_IS_GNUCC)
   set (CMAKE_C_FLAGS "${CMAKE_ANSI_CFLAGS} ${CMAKE_C_FLAGS}")
@@ -146,20 +146,20 @@ else ()
   # warnings that are emitted. If you need it, add it at configure time.
   if (CMAKE_C_COMPILER_ID STREQUAL "Intel")
     if (_INTEL_WINDOWS)
-      ADD_H5_FLAGS (HDF5_CMAKE_C_FLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/win-general")
+      ADD_H5_FLAGS (HDF5_CMAKE_C_FLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/classic/win-general")
     else ()
-      ADD_H5_FLAGS (HDF5_CMAKE_C_FLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/general")
+      ADD_H5_FLAGS (HDF5_CMAKE_C_FLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/classic/general")
     endif()
     if (NOT _INTEL_WINDOWS)
-      if(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 15.0)
-        ADD_H5_FLAGS (H5_CFLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/15")
-      endif()
+      if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 15.0)
+        ADD_H5_FLAGS (H5_CFLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/classic/15")
+      endif ()
       # this is just a failsafe
       list (APPEND H5_CFLAGS "-finline-functions")
-      if(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 18.0)
-        ADD_H5_FLAGS (H5_CFLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/18")
-      endif()
-    endif()
+      if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 18.0)
+        ADD_H5_FLAGS (H5_CFLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/classic/18")
+      endif ()
+    endif ()
   elseif (CMAKE_C_COMPILER_ID STREQUAL "GNU")
     # Add general CFlags for GCC versions 4.8 and above
     if (CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 4.8)
@@ -169,7 +169,15 @@ else ()
     # gcc automatically inlines based on the optimization level
     # this is just a failsafe
     list (APPEND H5_CFLAGS "-finline-functions")
-  elseif (CMAKE_C_COMPILER_ID MATCHES "IntelLLVM" OR CMAKE_C_COMPILER_ID MATCHES "[Cc]lang")
+  elseif (CMAKE_C_COMPILER_ID MATCHES "IntelLLVM")
+    if (_INTEL_WINDOWS)
+      ADD_H5_FLAGS (HDF5_CMAKE_C_FLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/oneapi/win-general")
+    else ()
+      # this is just a failsafe
+      list (APPEND H5_CFLAGS "-finline-functions")
+      ADD_H5_FLAGS (HDF5_CMAKE_C_FLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/oneapi/general")
+    endif ()
+  elseif (CMAKE_C_COMPILER_ID MATCHES "[Cc]lang")
     ADD_H5_FLAGS (HDF5_CMAKE_C_FLAGS "${HDF5_SOURCE_DIR}/config/clang-warnings/general")
     ADD_H5_FLAGS (H5_CFLAGS "${HDF5_SOURCE_DIR}/config/clang-warnings/error-general")
   elseif (CMAKE_C_COMPILER_ID STREQUAL "PGI")
@@ -191,13 +199,19 @@ if (HDF5_ENABLE_DEV_WARNINGS)
   message (STATUS "....HDF5 developer group warnings are enabled")
   if (CMAKE_C_COMPILER_ID STREQUAL "Intel")
     if (_INTEL_WINDOWS)
-      ADD_H5_FLAGS (H5_CFLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/win-developer-general")
+      ADD_H5_FLAGS (H5_CFLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/classic/win-developer-general")
     else ()
-      ADD_H5_FLAGS (H5_CFLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/developer-general")
+      ADD_H5_FLAGS (H5_CFLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/classic/developer-general")
     endif ()
   elseif (CMAKE_C_COMPILER_ID STREQUAL "GNU" AND CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 4.8)
     ADD_H5_FLAGS (H5_CFLAGS "${HDF5_SOURCE_DIR}/config/gnu-warnings/developer-general")
-  elseif (CMAKE_C_COMPILER_ID MATCHES "IntelLLVM" OR CMAKE_C_COMPILER_ID MATCHES "[Cc]lang")
+  elseif (CMAKE_C_COMPILER_ID MATCHES "IntelLLVM")
+    if (_INTEL_WINDOWS)
+      ADD_H5_FLAGS (H5_CFLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/oneapi/win-developer-general")
+    else ()
+      ADD_H5_FLAGS (H5_CFLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/oneapi/developer-general")
+    endif ()
+  elseif (CMAKE_C_COMPILER_ID MATCHES "[Cc]lang")
     ADD_H5_FLAGS (H5_CFLAGS "${HDF5_SOURCE_DIR}/config/clang-warnings/developer-general")
   endif ()
 
@@ -211,12 +225,16 @@ if (HDF5_ENABLE_DEV_WARNINGS)
       list (APPEND H5_CFLAGS "-Winline")
     elseif (CMAKE_C_COMPILER_ID STREQUAL "Intel" AND NOT _INTEL_WINDOWS)
       list (APPEND H5_CFLAGS "-Winline")
+    elseif (CMAKE_C_COMPILER_ID MATCHES "IntelLLVM" AND NOT _INTEL_WINDOWS)
+      list (APPEND H5_CFLAGS "-Winline")
+    elseif (CMAKE_C_COMPILER_ID MATCHES "[Cc]lang")
+      list (APPEND H5_CFLAGS "-Winline")
     endif ()
   endif ()
 else ()
   if (CMAKE_C_COMPILER_ID STREQUAL "GNU" AND CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 4.8)
     ADD_H5_FLAGS (H5_CFLAGS "${HDF5_SOURCE_DIR}/config/gnu-warnings/no-developer-general")
-  elseif (CMAKE_C_COMPILER_ID MATCHES "IntelLLVM" OR CMAKE_C_COMPILER_ID MATCHES "[Cc]lang")
+  elseif (CMAKE_C_COMPILER_ID MATCHES "[Cc]lang")
     ADD_H5_FLAGS (H5_CFLAGS "${HDF5_SOURCE_DIR}/config/clang-warnings/no-developer-general")
   endif ()
 endif ()
diff --git a/config/cmake/HDFFortranCompilerFlags.cmake b/config/cmake/HDFFortranCompilerFlags.cmake
index f207c70..8ac3f49 100644
--- a/config/cmake/HDFFortranCompilerFlags.cmake
+++ b/config/cmake/HDFFortranCompilerFlags.cmake
@@ -23,6 +23,8 @@ if (HDF5_DISABLE_COMPILER_WARNINGS)
     set (HDF5_WARNINGS_BLOCKED 1)
     if (CMAKE_Fortran_COMPILER_ID STREQUAL "Intel")
       set (CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} /warn:none")
+    elseif (CMAKE_Fortran_COMPILER_ID MATCHES "IntelLLVM")
+      set (CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} /warn:none")
     endif ()
   endif ()
   if (WIN32)
@@ -70,7 +72,11 @@ endif ()
 if (NOT MSVC AND NOT MINGW)
   # General flags
   if (CMAKE_Fortran_COMPILER_ID STREQUAL "Intel")
-    ADD_H5_FLAGS (HDF5_CMAKE_Fortran_FLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/ifort-general")
+    if (_INTEL_WINDOWS)
+      ADD_H5_FLAGS (HDF5_CMAKE_Fortran_FLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/classic/win-ifort-general")
+    else ()
+      ADD_H5_FLAGS (HDF5_CMAKE_Fortran_FLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/classic/ifort-general")
+    endif()
     list (APPEND HDF5_CMAKE_Fortran_FLAGS "-free")
   elseif (CMAKE_Fortran_COMPILER_ID STREQUAL "GNU")
     ADD_H5_FLAGS (HDF5_CMAKE_Fortran_FLAGS "${HDF5_SOURCE_DIR}/config/gnu-warnings/gfort-general")
@@ -85,6 +91,13 @@ if (NOT MSVC AND NOT MINGW)
     else ()
       list (APPEND HDF5_CMAKE_Fortran_FLAGS "-std=f2008")
     endif ()
+  elseif (CMAKE_Fortran_COMPILER_ID MATCHES "IntelLLVM")
+    if (_INTEL_WINDOWS)
+      ADD_H5_FLAGS (HDF5_CMAKE_Fortran_FLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/oneapi/win-ifort-general")
+    else ()
+      ADD_H5_FLAGS (HDF5_CMAKE_Fortran_FLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/oneapi/ifort-general")
+    endif()
+    list (APPEND HDF5_CMAKE_Fortran_FLAGS "-free")
   elseif (CMAKE_Fortran_COMPILER_ID STREQUAL "PGI")
     list (APPEND HDF5_CMAKE_Fortran_FLAGS "-Mfreeform" "-Mdclchk" "-Mstandard" "-Mallocatable=03")
   endif ()
@@ -135,7 +148,10 @@ if (NOT MSVC AND NOT MINGW)
   endif ()
 else ()
   if (CMAKE_Fortran_COMPILER_ID STREQUAL "Intel")
-    ADD_H5_FLAGS (HDF5_CMAKE_Fortran_FLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/win-ifort-general")
+    ADD_H5_FLAGS (HDF5_CMAKE_Fortran_FLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/classic/win-ifort-general")
+    list (APPEND HDF5_CMAKE_Fortran_FLAGS "/stand:f03" "/free")
+  elseif (CMAKE_Fortran_COMPILER_ID MATCHES "IntelLLVM")
+    ADD_H5_FLAGS (HDF5_CMAKE_Fortran_FLAGS "${HDF5_SOURCE_DIR}/config/intel-warnings/oneapi/win-ifort-general")
     list (APPEND HDF5_CMAKE_Fortran_FLAGS "/stand:f03" "/free")
   endif ()
 endif ()