From 439d6b1c2a6da5cb6adc4c4dfc555af235722396 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Storsj=C3=B6?= <martin@martin.st>
Date: Wed, 19 Sep 2018 13:52:05 +0300
Subject: [PATCH] Include sys/time.h for cycleclock.h when building on MinGW
 (#680)

When building for ARM, there is a fallback codepath that uses
gettimeofday, which requires sys/time.h.

The Windows SDK doesn't have this header, but MinGW does have it.
Thus, this fixes building for Windows on ARM with MinGW
headers/libraries, while Windows on ARM with the Windows SDK still
is broken.
---
 src/cycleclock.h      | 2 +-
 src/internal_macros.h | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/cycleclock.h b/src/cycleclock.h
index 00d5764167..f5e37b011b 100644
--- a/src/cycleclock.h
+++ b/src/cycleclock.h
@@ -41,7 +41,7 @@ extern "C" uint64_t __rdtsc();
 #pragma intrinsic(__rdtsc)
 #endif
 
-#ifndef BENCHMARK_OS_WINDOWS
+#if !defined(BENCHMARK_OS_WINDOWS) || defined(BENCHMARK_OS_MINGW)
 #include <sys/time.h>
 #include <time.h>
 #endif
diff --git a/src/internal_macros.h b/src/internal_macros.h
index 32089e69f6..5dbf4fd275 100644
--- a/src/internal_macros.h
+++ b/src/internal_macros.h
@@ -40,6 +40,9 @@
   #define BENCHMARK_OS_CYGWIN 1
 #elif defined(_WIN32)
   #define BENCHMARK_OS_WINDOWS 1
+  #if defined(__MINGW32__)
+    #define BENCHMARK_OS_MINGW 1
+  #endif
 #elif defined(__APPLE__)
   #define BENCHMARK_OS_APPLE 1
   #include "TargetConditionals.h"