FreeBSD compability (#57)
diff --git a/absl/debugging/internal/stacktrace_powerpc-inl.inc b/absl/debugging/internal/stacktrace_powerpc-inl.inc
index 0628b28..60a889a 100644
--- a/absl/debugging/internal/stacktrace_powerpc-inl.inc
+++ b/absl/debugging/internal/stacktrace_powerpc-inl.inc
@@ -47,7 +47,8 @@
return *(sp+2);
#elif defined(_CALL_SYSV)
return *(sp+1);
-#elif defined(__APPLE__) || (defined(__linux__) && defined(__PPC64__))
+#elif defined(__APPLE__) || defined(__FreeBSD__) || \
+ (defined(__linux__) && defined(__PPC64__))
// This check is in case the compiler doesn't define _CALL_AIX/etc.
return *(sp+2);
#elif defined(__linux)