diff -rupN numpy-1.17.0/numpy/random/src/mt19937/mt19937.h numpy-1.17.0-new/numpy/random/src/mt19937/mt19937.h
--- numpy-1.17.0/numpy/random/src/mt19937/mt19937.h	2019-07-26 16:10:50.000000000 +0200
+++ numpy-1.17.0-new/numpy/random/src/mt19937/mt19937.h	2019-08-02 13:24:59.232065740 +0200
@@ -2,7 +2,7 @@
 #include <math.h>
 #include <stdint.h>
 
-#ifdef _WIN32
+#ifdef _MSC_VER
 #define inline __forceinline
 #endif
 
diff -rupN numpy-1.17.0/numpy/random/src/pcg64/pcg64.h numpy-1.17.0-new/numpy/random/src/pcg64/pcg64.h
--- numpy-1.17.0/numpy/random/src/pcg64/pcg64.h	2019-07-26 16:10:50.000000000 +0200
+++ numpy-1.17.0-new/numpy/random/src/pcg64/pcg64.h	2019-08-02 14:18:43.854394241 +0200
@@ -52,7 +52,7 @@
 
 #include <inttypes.h>
 
-#ifdef _WIN32
+#ifdef _MSC_VER
 #include <stdlib.h>
 #define inline __forceinline
 #endif
diff -rupN numpy-1.17.0/numpy/random/src/philox/philox.h numpy-1.17.0-new/numpy/random/src/philox/philox.h
--- numpy-1.17.0/numpy/random/src/philox/philox.h	2019-07-26 16:10:50.000000000 +0200
+++ numpy-1.17.0-new/numpy/random/src/philox/philox.h	2019-08-02 13:54:21.498728700 +0200
@@ -33,7 +33,7 @@ static NPY_INLINE uint64_t mulhilo64(uin
   return (uint64_t)product;
 }
 #else
-#ifdef _WIN32
+#ifdef _MSC_VER
 #include <intrin.h>
 #if defined(_WIN64) && defined(_M_AMD64)
 #pragma intrinsic(_umul128)