250731.015111.PDT correct try_mex_setup

Author: zaikunzhang

.github/workflows/test_matlab.yml

@@ -152,7 +152,7 @@ jobs:
               if [[ "${{ matrix.matlab }}" = "R2020"* || "${{ matrix.matlab }}" = "R2021"* || "${{ matrix.matlab }}" = "R2022"* || "${{ matrix.matlab }}" = "R2023"* ]] ; then
                   ONEAPI_VERSION=2023
               elif [[ "${{ matrix.matlab }}" = "R2024"* ]] ; then
-                  ONEAPI_VERSION=2025
+                  ONEAPI_VERSION=2024
               fi
           fi
           echo "ONEAPI_VERSION=$ONEAPI_VERSION" >> $GITHUB_ENV

matlab/setup_tools/try_mex_setup.m

@@ -56,10 +56,13 @@
     % The first version of MATLAB that supports oneAPI 2024 on Windows is R2024a. Earlier versions
     % cannot locate the compiler due to the change of the directory structure, even if ONEAPI_ROOT
     % is set correctly.
-    compiler_dir = fullfile(oneapi_root, 'compiler', 'latest');
+    compiler_dir = fullfile(oneapi_root, 'compiler', 'latest', system_string);
     if ~exist(compiler_dir, 'dir')
-        compiler_dir = fullfile(oneapi_root, 'compiler', 'latest', system_string);
+        compiler_dir = fullfile(oneapi_root, 'compiler', 'latest');
     end
+    % Zaikun 20250731: Note that the above two definitions of compiler_dir cannot be exchanged, as
+    % fullfile(oneapi_root, 'compiler', 'latest') is always a valid directory regardless of the
+    % version of Intel oneAPI.
 
     % Set PATH.
     compiler_bin = fullfile(compiler_dir, 'bin');