250902.151209.CST [skip ci] matlab: revise compile.m comments regarding getMexLibgcc

Author: zaikunzhang

matlab/setup_tools/compile.m

@@ -99,7 +99,9 @@ function compile(solvers, mexdir, fortd, gateways, options)
         gcc_version = getMexLibgcc().gccVersion;
     catch exception
         gcc_version = '';
-        if verbose && isunix && ~ismac  % As of 20250902, getMexLibgcc supports only Linux.
+        % As of 20250902, getMexLibgcc supports only Linux; indeed, if MEX is configured according
+        % to the documentation of MathWorks, then compiler_manufacturer contains 'gnu' only on Linux.
+        if verbose && isunix && ~ismac
             warning('prima:FailToGetGccVersion', 'Fail to get the version of libgcc: %s', exception.message);
         end
     end