Move macro ADD_H5_CFLAGS to cmake_ext_mod/HDFMacros.cmake and remove

duplicate versions.

config/cmake_ext_mod/HDFMacros.cmake

@@ -429,3 +429,21 @@ macro (HDF_DIR_PATHS package_prefix)
   endif ()
 endmacro ()
 
+macro (ADD_H5_FLAGS h5_flag_var infile)
+  file (STRINGS ${infile} TEST_FLAG_STREAM)
+  #message (STATUS "TEST_FLAG_STREAM=${TEST_FLAG_STREAM}")
+  list (LENGTH TEST_FLAG_STREAM len_flag)
+  if (len_flag GREATER 0)
+    math (EXPR _FP_LEN "${len_flag} - 1")
+    foreach (line RANGE 0 ${_FP_LEN})
+      list (GET TEST_FLAG_STREAM ${line} str_flag)
+      string (REGEX REPLACE "^#.*" "" str_flag "${str_flag}")
+      #message (STATUS "str_flag=${str_flag}")
+      if (str_flag)
+        list (APPEND ${h5_flag_var} "${str_flag}")
+      endif ()
+    endforeach ()
+  endif ()
+  #message (STATUS "h5_flag_var=${${h5_flag_var}}")
+endmacro ()
+