diff --git a/Makefile b/Makefile
index 2766d05..01dcb83 100644
--- a/Makefile
+++ b/Makefile
@@ -352,10 +352,44 @@ LIBS =
 
 DEPS = $(OBJS:.o=.d)
 
+ifdef OS
+   RM = del /Q
+   FixPath = $(subst /,\,$1)
+   WHERE = where
+else
+   ifeq ($(shell uname), Linux)
+      RM = rm -f
+      FixPath = $1
+	  WHERE = which
+   endif
+endif
+
+ifneq (, $(shell $(WHERE) python))
+    MY_PYTHON := python
+else ifneq (, $(shell $(WHERE) python3))
+    MY_PYTHON := python3
+endif
+
+ifdef MY_PYTHON
+    HAS_CRCMOD := $(shell $(MY_PYTHON) -c "import crcmod" 2>&1)
+endif
+
 all: $(TARGET)
 	$(OBJCOPY) -O binary $< $<.bin
-	-python fw-pack.py $<.bin $(GIT_HASH) $<.packed.bin
-	-python3 fw-pack.py $<.bin $(GIT_HASH) $<.packed.bin
+
+ifndef MY_PYTHON
+	$(info )
+	$(info !!!!!!!! PYTHON NOT FOUND, *.PACKED.BIN WON'T BE BUILT)
+	$(info )
+else ifneq (,$(HAS_CRCMOD))
+	$(info )
+	$(info !!!!!!!! CRCMOD NOT INSTALLED, *.PACKED.BIN WON'T BE BUILT)
+	$(info !!!!!!!! run: pip install crcmod)
+	$(info )
+else
+	-$(MY_PYTHON) fw-pack.py $<.bin $(GIT_HASH) $<.packed.bin
+endif
+
 	$(SIZE) $<
 
 debug:
@@ -382,4 +416,4 @@ bsp/dp32g030/%.h: hardware/dp32g030/%.def
 -include $(DEPS)
 
 clean:
-	rm -f $(TARGET).bin $(TARGET).packed.bin $(TARGET) $(OBJS) $(DEPS)
+	$(RM) $(call FixPath, $(TARGET).bin $(TARGET).packed.bin $(TARGET) $(OBJS) $(DEPS))
diff --git a/win_make.bat b/win_make.bat
index 80c5998..80b0350 100644
--- a/win_make.bat
+++ b/win_make.bat
@@ -18,15 +18,6 @@
 
 
 
-
-
-:: Delete any left over files from previous compile
-::
-del /S /Q *.o >nul 2>nul
-del /S /Q *.d >nul 2>nul
-del /Q firmware >nul 2>nul
-del /Q *.bin >nul 2>nul
-
 :: You may need to edit/change these three paths to suit your setup
 ::
 :: Temporarily add the compiler and make program directories to the system PATH ..
@@ -40,14 +31,6 @@ del /Q *.bin >nul 2>nul
 make clean
 make
 
-:: Delete the spent files
-::
-del /S /Q *.o >nul 2>nul
-del /S /Q *.d >nul 2>nul
-del /Q firmware >nul 2>nul
-
-
-
 
 :: If you have python installed, you can create a 'packed' .bin from the compiled firmware.bin file.
 :: The Quansheng windows upload-to-radio program requires a 'packed' .bin file.