Build failure: mono4

[devurandom]

Steps To Reproduce

Steps to reproduce the behavior:

1. build mono4

Build log

Build Log

error: builder for '/nix/store/5saaj0kj6iycj65v6397s6wyh413qalx-mono-4.8.1.0.drv' failed with exit code 2;
       last 25 log lines:
       >   CC       gc_dlopen.lo
       > In file included from ./include/private/gc_priv.h:95,
       >                  from gc_dlopen.c:26:
       > ./include/private/gc_locks.h:446:27: warning: function declaration isn't a prototype [8;;https://gcc.gnu.org/onlinedocs/gcc-14.2.0/gcc/Warning-Options.html#index-Wno-strict-prototypes-Wstrict-prototypes8;;]
       >   446 |        inline static void GC_memory_barrier()
       >       |                           ^~~~~~~~~~~~~~~~~
       > gc_dlopen.c:49:15: warning: function declaration isn't a prototype [8;;https://gcc.gnu.org/onlinedocs/gcc-14.2.0/gcc/Warning-Options.html#index-Wno-strict-prototypes-Wstrict-prototypes8;;]
       >    49 |   static void disable_gc_for_dlopen()
       >       |               ^~~~~~~~~~~~~~~~~~~~~
       > gc_dlopen.c: In function 'disable_gc_for_dlopen':
       > gc_dlopen.c:52:30: error: implicit declaration of function 'GC_collection_in_progress' [8;;https://gcc.gnu.org/onlinedocs/gcc-14.2.0/gcc/Warning-Options.html#index-Wimplicit-function-declaration-Wimplicit-function-declaration8;;]
       >    52 |     while (GC_incremental && GC_collection_in_progress()) {
       >       |                              ^~~~~~~~~~~~~~~~~~~~~~~~~
       > gc_dlopen.c:52:30: warning: nested extern declaration of 'GC_collection_in_progress' [8;;https://gcc.gnu.org/onlinedocs/gcc-14.2.0/gcc/Warning-Options.html#index-Wnested-externs-Wnested-externs8;;]
       > gc_dlopen.c: At top level:
       > gc_dlopen.c:68:10: warning: function declaration isn't a prototype [8;;https://gcc.gnu.org/onlinedocs/gcc-14.2.0/gcc/Warning-Options.html#index-Wno-strict-prototypes-Wstrict-prototypes8;;]
       >    68 |   void * GC_dlopen(path, mode)
       >       |          ^~~~~~~~~
       > make[3]: *** [Makefile:699: gc_dlopen.lo] Error 1
       > make[3]: Leaving directory '/build/mono-4.8.1/libgc'
       > make[2]: *** [Makefile:727: all-recursive] Error 1
       > make[2]: Leaving directory '/build/mono-4.8.1/libgc'
       > make[1]: *** [Makefile:539: all-recursive] Error 1
       > make[1]: Leaving directory '/build/mono-4.8.1'
       > make: *** [Makefile:469: all] Error 2
       For full logs, run 'nix log /nix/store/5saaj0kj6iycj65v6397s6wyh413qalx-mono-4.8.1.0.drv'.

5saaj0kj6iycj65v6397s6wyh413qalx-mono-4.8.1.0.log

Additional context

Related: #371175

Metadata

• system: "x86_64-linux"
• host os: Linux 6.12.5, NixOS, 25.05 (Warbler), 25.05.20241219.d70bd19
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.24.11
• channels(root): "nixos"
• nixpkgs: /nix/store/8fwsiv0hd7nw1brkvka0jf1frk3m7qkr-source

Notify maintainers

@thoughtpolice, @obadz

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[devurandom]

Fixed by #370711, see #371175 (comment).