Index: files/patch-third__party_abseil-cpp_absl_base_internal_unscaledcycleclock.cc
===================================================================
--- files/patch-third__party_abseil-cpp_absl_base_internal_unscaledcycleclock.cc	(nonexistent)
+++ files/patch-third__party_abseil-cpp_absl_base_internal_unscaledcycleclock.cc	(working copy)
@@ -0,0 +1,55 @@
+--- third_party/abseil-cpp/absl/base/internal/unscaledcycleclock.cc.orig	2020-02-04 17:37:57 UTC
++++ third_party/abseil-cpp/absl/base/internal/unscaledcycleclock.cc
+@@ -20,10 +20,16 @@
+ #include <intrin.h>
+ #endif
+ 
+-#if defined(__powerpc__) || defined(__ppc__)
++#if (defined(__powerpc__) || defined(__ppc__)) && !defined(__clang__)
+ #include <sys/platform/ppc.h>
++
+ #endif
+ 
++#if (defined(__powerpc__) || defined(__ppc__)) && defined(__clang__) && defined(__FreeBSD__)
++#include <sys/types.h>
++#include <sys/sysctl.h>
++#endif
++
+ #include "absl/base/internal/sysinfo.h"
+ 
+ namespace absl {
+@@ -57,11 +62,34 @@ double UnscaledCycleClock::Frequency() {
+ #elif defined(__powerpc__) || defined(__ppc__)
+ 
+ int64_t UnscaledCycleClock::Now() {
++#ifdef __GLIBC__
+   return __ppc_get_timebase();
++#elif defined(__FreeBSD__)
++  union { long long complete; unsigned int part[2]; } ticks;
++  unsigned int tmp;
++  asm volatile(
++    "0:\n"
++    "mftbu %[hi32]\n"
++    "mftb %[lo32]\n"
++    "mftbu %[tmp]\n"
++    "cmpw %[tmp],%[hi32]\n"
++    "bne 0b\n"
++    : [hi32] "=r"(ticks.part[0]), [lo32] "=r"(ticks.part[1]),
++    [tmp] "=r"(tmp)
++  );
++  return ticks.complete;
++#endif
+ }
+ 
+ double UnscaledCycleClock::Frequency() {
++#ifdef __GLIBC__
+   return __ppc_get_timebase_freq();
++#elif defined(__FreeBSD__)
++  double timebaseFrequency = 0;
++  size_t length = sizeof(timebaseFrequency);
++  sysctlbyname("kern.timecounter.tc.timebase.frequency", &timebaseFrequency, &length, NULL, 0);
++  return timebaseFrequency;
++#endif
+ }
+ 
+ #elif defined(__aarch64__)

Property changes on: files/patch-third__party_abseil-cpp_absl_base_internal_unscaledcycleclock.cc
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