Index: head/devel/pecl-grpc/files/patch-third__party_abseil-cpp_absl_base_internal_unscaledcycleclock.cc
===================================================================
--- head/devel/pecl-grpc/files/patch-third__party_abseil-cpp_absl_base_internal_unscaledcycleclock.cc	(revision 525671)
+++ head/devel/pecl-grpc/files/patch-third__party_abseil-cpp_absl_base_internal_unscaledcycleclock.cc	(revision 525672)
@@ -1,55 +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__)
++#if (defined(__powerpc__) || defined(__ppc__)) && defined(__GLIBC__)
  #include <sys/platform/ppc.h>
 +
  #endif
  
-+#if (defined(__powerpc__) || defined(__ppc__)) && defined(__clang__) && defined(__FreeBSD__)
++#if (defined(__powerpc__) || defined(__ppc__)) && 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__)
Index: head/devel/py-grpcio/files/patch-third__party_abseil-cpp_absl_base_internal_unscaledcycleclock.cc
===================================================================
--- head/devel/py-grpcio/files/patch-third__party_abseil-cpp_absl_base_internal_unscaledcycleclock.cc	(revision 525671)
+++ head/devel/py-grpcio/files/patch-third__party_abseil-cpp_absl_base_internal_unscaledcycleclock.cc	(revision 525672)
@@ -1,55 +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__)
++#if (defined(__powerpc__) || defined(__ppc__)) && defined(__GLIBC__)
  #include <sys/platform/ppc.h>
 +
  #endif
  
-+#if (defined(__powerpc__) || defined(__ppc__)) && defined(__clang__) && defined(__FreeBSD__)
++#if (defined(__powerpc__) || defined(__ppc__)) && 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__)