From 2da868d81ec4f93646a8842b597e1b65e8197aa8 Mon Sep 17 00:00:00 2001
From: Tobias Mayer <tobim@fastmail.fm>
Date: Wed, 13 Feb 2019 13:08:57 +0100
Subject: [PATCH] Add shim for clock_gettime until macos >= 10.12

---
 .../llvm/7/compiler-rt-clock_gettime.patch    | 74 +++++++++++++++++++
 .../compilers/llvm/7/compiler-rt.nix          |  4 +-
 2 files changed, 76 insertions(+), 2 deletions(-)
 create mode 100644 pkgs/development/compilers/llvm/7/compiler-rt-clock_gettime.patch

diff --git a/pkgs/development/compilers/llvm/7/compiler-rt-clock_gettime.patch b/pkgs/development/compilers/llvm/7/compiler-rt-clock_gettime.patch
new file mode 100644
index 000000000000..f9323ed95c05
--- /dev/null
+++ b/pkgs/development/compilers/llvm/7/compiler-rt-clock_gettime.patch
@@ -0,0 +1,74 @@
+commit f00c7bccf7955b7dfbb4859fd9019e9eb3349f2d
+Author: Tobias Mayer <tobim@fastmail.fm>
+Date:   Wed Feb 13 12:44:17 2019 +0100
+
+    Provide clock_gettime for xray on macos < 10.12
+
+diff --git a/lib/xray/xray_basic_logging.cc b/lib/xray/xray_basic_logging.cc
+index a46c151af..38aea6932 100644
+--- a/lib/xray/xray_basic_logging.cc
++++ b/lib/xray/xray_basic_logging.cc
+@@ -36,6 +36,29 @@
+ #include "xray_tsc.h"
+ #include "xray_utils.h"
+ 
++#if __MACH__
++#include <mach/clock.h>
++#include <mach/mach.h>
++enum clockid_t {
++    CLOCK_MONOTONIC = REALTIME_CLOCK,
++    CLOCK_REALTIME = REALTIME_CLOCK
++};
++
++int clock_gettime(clockid_t clock_id, struct timespec *ts) {
++  if (ts != NULL) {
++      clock_serv_t cclock;
++      mach_timespec_t mts;
++      host_get_clock_service(mach_host_self(), clock_id, &cclock);
++      clock_get_time(cclock, &mts);
++      mach_port_deallocate(mach_task_self(), cclock);
++      ts->tv_sec = mts.tv_sec;
++      ts->tv_nsec = mts.tv_nsec;
++      return 0;
++  }
++  return -1;
++}
++#endif
++
+ namespace __xray {
+ 
+ SpinMutex LogMutex;
+diff --git a/lib/xray/xray_fdr_logging.cc b/lib/xray/xray_fdr_logging.cc
+index 4b308b27f..1d044c8fd 100644
+--- a/lib/xray/xray_fdr_logging.cc
++++ b/lib/xray/xray_fdr_logging.cc
+@@ -38,6 +38,29 @@
+ #include "xray_tsc.h"
+ #include "xray_utils.h"
+ 
++#if __MACH__
++#include <mach/clock.h>
++#include <mach/mach.h>
++enum clockid_t {
++    CLOCK_MONOTONIC = REALTIME_CLOCK,
++    CLOCK_REALTIME = REALTIME_CLOCK
++};
++
++int clock_gettime(clockid_t clock_id, struct timespec *ts) {
++  if (ts != NULL) {
++      clock_serv_t cclock;
++      mach_timespec_t mts;
++      host_get_clock_service(mach_host_self(), clock_id, &cclock);
++      clock_get_time(cclock, &mts);
++      mach_port_deallocate(mach_task_self(), cclock);
++      ts->tv_sec = mts.tv_sec;
++      ts->tv_nsec = mts.tv_nsec;
++      return 0;
++  }
++  return -1;
++}
++#endif
++
+ namespace __xray {
+ 
+ atomic_sint32_t LoggingStatus = {XRayLogInitStatus::XRAY_LOG_UNINITIALIZED};
diff --git a/pkgs/development/compilers/llvm/7/compiler-rt.nix b/pkgs/development/compilers/llvm/7/compiler-rt.nix
index 25c38db470d9..dff9cb9c49c0 100644
--- a/pkgs/development/compilers/llvm/7/compiler-rt.nix
+++ b/pkgs/development/compilers/llvm/7/compiler-rt.nix
@@ -1,5 +1,4 @@
 { stdenv, version, fetch, cmake, python, llvm, libcxxabi }:
-with stdenv.lib;
 stdenv.mkDerivation rec {
   name = "compiler-rt-${version}";
   inherit version;
@@ -16,7 +15,8 @@ stdenv.mkDerivation rec {
 
   patches = [
     ./compiler-rt-codesign.patch # Revert compiler-rt commit that makes codesign mandatory
-  ] ++ optional stdenv.hostPlatform.isMusl ./sanitizers-nongnu.patch;
+  ] ++ stdenv.lib.optional stdenv.hostPlatform.isMusl ./sanitizers-nongnu.patch
+  ++ stdenv.lib.optional stdenv.hostPlatform.isDarwin ./compiler-rt-clock_gettime.patch;
 
   # TSAN requires XPC on Darwin, which we have no public/free source files for. We can depend on the Apple frameworks
   # to get it, but they're unfree. Since LLVM is rather central to the stdenv, we patch out TSAN support so that Hydra