I am trying to compile the current (master branch) version of gmsh, but I am experiencing the following compilation error: ``` /usr/lib/gcc/x86_64-pc-linux-gnu/15.1.1/include/omp.h:448:1: error: template with C linkage 448 | template<typename __T, omp_allocator_handle_t __Handle> | ^~~~~~~~ /dir/to/gmsh/gmsh/contrib/hxt/tetBR/src/hxt_boundary_recovery.cxx:1:1: note: ‘extern "C"’ linkage started here 1 | extern "C" { | ^~~~~~~~~~ ``` The problematic file `hxt_boundary_recovery.cxx` contains the block ``` extern "C" { #include "hxt_mesh.h" #include "hxt_tools.h" #include "hxt_omp.h" #include "predicates.h" } ``` with `hxt_omp.h` #including `<omp.h>`, which on my system contains C++ code, which is enabled if `__cplusplus` is #defined (which it is, by any C++ compiler).