Print unit test execution time

Makefile

@@ -28,7 +28,7 @@ endif
 
 UNITY_ROOT=Tests/Unity
 
-CFLAGS=-std=c99
+CFLAGS=-std=c99 -std=gnu99
 CFLAGS += -Wall
 CFLAGS += -Wextra
 CFLAGS += -Wpointer-arith
@@ -148,12 +148,14 @@ INC_DIRS_CODE= \
   -IInc/crc/crc16_variants \
   -IInc/crc/crc32_variants \
   -IInc/crypto \
-  -IInc/sort
+  -IInc/sort \
+  -ITests/
 
 INC_DIRS=$(INC_DIRS_CODE) -I$(UNITY_ROOT)/src -I$(UNITY_ROOT)/extras/fixture/src
 SYMBOLS = -DUNITY_FIXTURE_NO_EXTRAS
 SYMBOLS += -DUNITY_INCLUDE_DOUBLE
 SYMBOLS += -DUNITY_DOUBLE_PRECISION=1e-12
+SYMBOLS += -DUNITY_INCLUDE_CONFIG_H
 
 #######################################
 # Astyle

Tests/unity_config.h

@@ -0,0 +1,34 @@
+#ifndef TESTS_UNITY_UNITY_CONFIG_H_
+#define TESTS_UNITY_UNITY_CONFIG_H_
+
+#define UNITY_INCLUDE_EXEC_TIME
+#define UNITY_CLOCK_MS
+
+#if defined(_WIN32)
+#include <time.h>
+#define UNITY_TIME_TYPE clock_t
+#define UNITY_GET_TIME(t) t = (clock_t)((clock() * 1000) / CLOCKS_PER_SEC)
+#define UNITY_EXEC_TIME_START() UNITY_GET_TIME(Unity.CurrentTestStartTime)
+#define UNITY_EXEC_TIME_STOP() UNITY_GET_TIME(Unity.CurrentTestStopTime)
+#define UNITY_PRINT_EXEC_TIME() { \
+        UNITY_UINT execTimeMs = (Unity.CurrentTestStopTime - Unity.CurrentTestStartTime); \
+        UnityPrint(" ("); \
+        UnityPrintNumberUnsigned(execTimeMs); \
+        UnityPrint(" ms)"); \
+    }
+#elif defined(__unix__) || defined(__APPLE__)
+#include <time.h>
+#define UNITY_TIME_TYPE struct timespec
+#define UNITY_GET_TIME(t) clock_gettime(CLOCK_MONOTONIC, &t)
+#define UNITY_EXEC_TIME_START() UNITY_GET_TIME(Unity.CurrentTestStartTime)
+#define UNITY_EXEC_TIME_STOP() UNITY_GET_TIME(Unity.CurrentTestStopTime)
+#define UNITY_PRINT_EXEC_TIME() { \
+        UNITY_UINT execTimeNs = ((Unity.CurrentTestStopTime.tv_sec - Unity.CurrentTestStartTime.tv_sec) * 1000L); \
+        execTimeNs += (Unity.CurrentTestStopTime.tv_nsec - Unity.CurrentTestStartTime.tv_nsec); \
+        UnityPrint(" ("); \
+        UnityPrintNumberUnsigned(execTimeNs); \
+        UnityPrint(" ns)"); \
+    }
+#endif
+
+#endif /* TESTS_UNITY_UNITY_CONFIG_H_ */