--- ./tensorflow/contrib/makefile/Makefile.orig	2019-07-08 16:51:36.748365000 +0100
+++ ./tensorflow/contrib/makefile/Makefile	2019-07-08 16:51:21.774903000 +0100
@@ -60,12 +60,15 @@
 	ifeq ($(UNAME_S),Linux)
 	        HOST_OS := LINUX
 	endif
+        ifeq ($(UNAME_S),FreeBSD)
+                HOST_OS := FREEBSD
+        endif
 	ifeq ($(UNAME_S),Darwin)
 		HOST_OS := OSX
 	endif
 endif
 
-HOST_ARCH := $(shell if [[ $(shell uname -m) =~ i[345678]86 ]]; then echo x86_32; else echo $(shell uname -m); fi)
+HOST_ARCH := $(shell if uname -m | grep -q i[345678]86; then echo x86_32; elif uname -m | grep -q amd64; then echo x86_64; else uname -m; fi)
 
 # Where compiled objects are stored.
 HOST_OBJDIR := $(MAKEFILE_DIR)/gen/host_obj/
@@ -111,6 +114,9 @@
 ifeq ($(HOST_OS),LINUX)
 	HOST_LIBS += -ldl -lpthread
 endif
+ifeq ($(HOST_OS),FREEBSD)
+        HOST_LIBS += -lexecinfo -lpthread
+endif
 
 # If we're on a Pi, link in pthreads and dl
 ifeq ($(HOST_OS),PI)
@@ -248,7 +254,7 @@
 	LDFLAGS += -all_load
 endif
 # Make sure that we don't strip global constructors on Linux.
-ifeq ($(TARGET),LINUX)
+ifeq ($(TARGET),LINUX,FREEBSD)
 ifeq ($(HAS_GEN_HOST_PROTOC),true)
 	LIBFLAGS += -L$(MAKEFILE_DIR)/gen/protobuf-host/lib
 	export LD_LIBRARY_PATH=$(MAKEFILE_DIR)/gen/protobuf-host/lib
@@ -261,6 +267,10 @@
 ifeq ($(TARGET),LINUX)
 	LIBS += -ldl -lpthread
 endif
+ifeq ($(TARGET),FREEBSD)
+        LIBS += -lexecinfo -lpthread
+endif
+
 # If we're cross-compiling for the Raspberry Pi, use the right gcc.
 ifeq ($(TARGET),PI)
 	CXXFLAGS += $(ANDROID_TYPES) -DRASPBERRY_PI