250902.141148.CST [skip ci] matlab: revise compile.m, using try-catch when calling getMexLibgcc

Author: zaikunzhang

matlab/setup_tools/compile.m

@@ -82,21 +82,32 @@ function compile(solvers, mexdir, fortd, gateways, options)
 if isempty(compiler_major_version)
     compiler_major_version = NaN;  % Failed to get the version number
 end
-% Get the major version of GCC corresponding to the libgcc used by the Fortran MEX.
-gcc_major_version = sscanf(getMexLibgcc().gccVersion, '%d');
-if isempty(gcc_major_version)
-    gcc_major_version = NaN;  % Failed to get the version number
-end
+
 if contains(compiler_manufacturer, 'gnu')  % gfortran
     % -Wno-missing-include-dirs is needed to suppress the warning about missing include directories
     % when Simulink is not installed.
     extra_compiler_options = '-g -Wno-missing-include-dirs -fno-stack-arrays -frecursive';
+
     % -ftrampoline-impl=heap instructs the compiler to put the trampolines on the heap instead of the
     % stack. This option is available since gcc/gfortran 14. Without this option, executable stacks
     % will be generated by the internal subroutines passed as actual arguments. This is related to
     % a bug of MATLAB R2025a on Linux, which segfaults when handling Fortran MEX files with internal
     % procedures. For details, see the `support_internal_procedures` part below and
     % https://fortran-lang.discourse.group/t/implementation-of-a-parametrized-objective-function-without-using-module-variables-or-internal-subroutines/9919?u=zaikunzhang
+    % First, get the major version of GCC corresponding to the libgcc used by the Fortran MEX.
+    try
+        gcc_version = getMexLibgcc().gccVersion;
+    catch exception
+        gcc_version = '';
+        if verbose
+            warning('prima:FailToGetGccVersion', 'Fail to get the version of libgcc: %s', exception.message);
+        end
+    end
+    gcc_major_version = sscanf(gcc_version, '%d');
+    if isempty(gcc_major_version)
+        gcc_major_version = NaN;  % Failed to get the version number
+    end
+    % Now add -ftrampoline-impl=heap if both the Fortran compiler and libgcc are of version 14+.
     if compiler_major_version >= 14 && gcc_major_version >= 14
         extra_compiler_options = [extra_compiler_options, ' -ftrampoline-impl=heap'];  % Note the space
     end