sbcl_*: fix build by adding a #define

Probably triggered by glibc: 2.35-163 -> 2.35-224
Inspired by https://bugs.gentoo.org/869434

pkgs/development/compilers/sbcl/2.x.nix

···
     #   duplicate symbol '_static_code_space_free_pointer' in: alloc.o traceroot.o
     # Should be fixed past 2.1.10 release.
     "-fcommon"
-  ];
+  ]
+    # Fails to find `O_LARGEFILE` otherwise.
+    ++ [ "-D_GNU_SOURCE" ];
 
   buildPhase = ''
     runHook preBuild