macOS: bump to GCC 13 (for compilation and for use_dll)

.gitlab-ci.yml

@@ -59,7 +59,7 @@ build_macos_x86_64:
     - macOS
   script:
     - autoreconf -si
-    - arch -x86_64 ./configure CC=gcc-12 CXX=g++-12 LEX=/usr/local/opt/flex/bin/flex YACC=/usr/local/opt/bison/bin/bison
+    - arch -x86_64 ./configure CC=gcc-13 CXX=g++-13 LEX=/usr/local/opt/flex/bin/flex YACC=/usr/local/opt/bison/bin/bison
     - arch -x86_64 make -j$(sysctl -n hw.ncpu)
   artifacts:
     paths:

src/ModelTree.cc

@@ -1616,8 +1616,7 @@ ModelTree::matlab_arch(const string &mexext)
 filesystem::path
 ModelTree::findGccOnMacos(const string &mexext)
 {
-  const string macos_gcc_version {"12"}; // doc/manual/source/installation-and-configuration.rst
-                                         // should be updated when this is changed
+  const string macos_gcc_version {"13"};
   char dynare_preprocessor_path[PATH_MAX];
   uint32_t size = PATH_MAX;
   filesystem::path local_gcc_path;