diff --git a/Makefile b/Makefile
index adf6edc..5e452c7 100755
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 #CC=icpc -static -O3
 #CC=g++ -static #-O3
-#CFLAGS= -O3 #-static
+CFLAGS = -std=c++11
 #CFLAGS_DB="" #-static
 CC=g++ # for mac os x
 
diff --git a/include/random.h b/include/random.h
index c2abdb6..4392241 100644
--- a/include/random.h
+++ b/include/random.h
@@ -38,6 +38,22 @@
 #include <algorithm>
 using namespace std;
 
+#ifndef M_E
+#define M_E         2.71828182845904523536028747135266250   /* e              */
+#define M_LOG2E     1.44269504088896340735992468100189214   /* log2(e)        */
+#define M_LOG10E    0.434294481903251827651128918916605082  /* log10(e)       */
+#define M_LN2       0.693147180559945309417232121458176568  /* loge(2)        */
+#define M_LN10      2.30258509299404568401799145468436421   /* loge(10)       */
+#define M_PI        3.14159265358979323846264338327950288   /* pi             */
+#define M_PI_2      1.57079632679489661923132169163975144   /* pi/2           */
+#define M_PI_4      0.785398163397448309615660845819875721  /* pi/4           */
+#define M_1_PI      0.318309886183790671537767526745028724  /* 1/pi           */
+#define M_2_PI      0.636619772367581343075535053490057448  /* 2/pi           */
+#define M_2_SQRTPI  1.12837916709551257389615890312154517   /* 2/sqrt(pi)     */
+#define M_SQRT2     1.41421356237309504880168872420969808   /* sqrt(2)        */
+#define M_SQRT1_2   0.707106781186547524400844362104849039  /* 1/sqrt(2)      */
+#endif
+
 /**Random number generation class, uses various types of random generation depending on the implementation.*/
 class RAND: public MTRand {
 public:
diff --git a/include/tmetapop.h b/include/tmetapop.h
index 65a47a0..f161659 100644
--- a/include/tmetapop.h
+++ b/include/tmetapop.h
@@ -38,11 +38,7 @@
 
 #include "patch.h"
 
-#ifdef _RANDOM_C11
-#include "randomC11.h"
-#else
 #include "random.h"
-#endif
 
 class LCE;
 class LCE_Breed;