MAKE: fixes for mingw and darwin builds

Author: mgerhardy

Makefile

@@ -1,10 +1,17 @@
 CC=gcc
 CFLAGS=\
 	-Dstricmp=strcasecmp -DCom_Memcpy=memcpy -DCom_Memset=memset \
-	-DMAC_STATIC= -DQDECL= -DLINUX -DBSPC -D_FORTIFY_SOURCE=2 \
+	-DMAC_STATIC= -DQDECL= -DBSPC -D_FORTIFY_SOURCE=2 \
 	-fno-common \
 	-I. -Ideps -Wall
 
+ifneq (,$(findstring "$(PLATFORM)", "linux" "gnu_kfreebsd" "kfreebsd-gnu" "gnu"))
+  CFLAGS += -DHAVE_GETRANDOM -DLINUX
+endif
+ifeq ($(PLATFORM),darwin)
+  CFLAGS += -DHAVE_ARC4RANDOM -DLINUX
+endif
+
 RELEASE_CFLAGS=-O3 -ffast-math
 DEBUG_CFLAGS=-g -O0 -ffast-math
 LDFLAGS=-lm -lpthread -fno-common