Fix compile error in CPU affinity

struct cpu_set_t may be defined (eg on Hurd) even if the CPU affinity API
is not fully existing, or a non-working stub.

diff --git a/compat/cpu.h b/compat/cpu.h
index f652aaff2e01bdcb66f932f7d3e1dfa635fb835a..e6e73f236cee73f9955f0b6beadc0885573b9abf 100644 (file)
--- a/compat/cpu.h
+++ b/compat/cpu.h
@@ -18,9 +18,11 @@
 
 #if !HAVE_CPU_AFFINITY
 /* failing replacements to minimize the number of if-HAVE_CPU_AFFINITYs */
+#if !defined(__cpu_set_t_defined)
 typedef struct {
     int bits;
 } cpu_set_t;
+#endif
 inline int sched_setaffinity(int, size_t, cpu_set_t *) { return ENOTSUP; }
 inline int sched_getaffinity(int, size_t, cpu_set_t *) { return ENOTSUP; }
 #endif /* HAVE_CPU_AFFINITY */