Add NetBSD support. (#90)

Makefile

@@ -48,6 +48,10 @@ ifeq ($(UNAME_S),FreeBSD)
 	CFLAGS   += -pthread
 	CXXFLAGS += -pthread
 endif
+ifeq ($(UNAME_S),NetBSD)
+	CFLAGS   += -pthread
+	CXXFLAGS += -pthread
+endif
 ifeq ($(UNAME_S),Haiku)
 	CFLAGS   += -pthread
 	CXXFLAGS += -pthread

ggml.c

@@ -2,7 +2,7 @@
 
 #if defined(_MSC_VER) || defined(__MINGW32__)
 #include <malloc.h> // using malloc.h with MSC/MINGW
-#elif !defined(__FreeBSD__)
+#elif !defined(__FreeBSD__) && !defined(__NetBSD__)
 #include <alloca.h>
 #endif
 

utils.cpp

@@ -11,7 +11,7 @@
 
  #if defined(_MSC_VER) || defined(__MINGW32__)
  #include <malloc.h> // using malloc.h with MSC/MINGW
- #elif !defined(__FreeBSD__)
+ #elif !defined(__FreeBSD__) && !defined(__NetBSD__)
  #include <alloca.h>
  #endif