From 7ea8753b72ed7ddecdcb2db5b223ca920f8155b3 Mon Sep 17 00:00:00 2001
From: Fred Sundvik <fsundvik@gmail.com>
Date: Mon, 10 Jul 2017 13:46:39 +0300
Subject: [PATCH] Don't run dfu-programmer unless specified as a target

This introduces a grep dependency, which I believe we didn't have
before, but it should be available and installed by default on all the
supported systems.
---
 tmk_core/avr.mk | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/tmk_core/avr.mk b/tmk_core/avr.mk
index ccecdb192..a36d219dd 100644
--- a/tmk_core/avr.mk
+++ b/tmk_core/avr.mk
@@ -115,11 +115,11 @@ dfu: $(BUILD_DIR)/$(TARGET).hex sizeafter
 		echo "Error: Bootloader not found. Trying again in 5s." ;\
 		sleep 5 ;\
 	done
-ifneq (, $(findstring 0.7, $(shell $(DFU_PROGRAMMER) --version 2>&1)))
-	$(DFU_PROGRAMMER) $(MCU) erase --force
-else
-	$(DFU_PROGRAMMER) $(MCU) erase
-endif
+	if $(DFU_PROGRAMMER) --version 2>&1 | grep -q 0.7 ; then\
+		$(DFU_PROGRAMMER) $(MCU) erase --force;\
+	else\
+		$(DFU_PROGRAMMER) $(MCU) erase;\
+	fi
 	$(DFU_PROGRAMMER) $(MCU) flash $(BUILD_DIR)/$(TARGET).hex
 	$(DFU_PROGRAMMER) $(MCU) reset
 
@@ -135,11 +135,11 @@ flip-ee: $(BUILD_DIR)/$(TARGET).hex $(BUILD_DIR)/$(TARGET).eep
 	$(REMOVE) $(BUILD_DIR)/$(TARGET)eep.hex
 
 dfu-ee: $(BUILD_DIR)/$(TARGET).hex $(BUILD_DIR)/$(TARGET).eep
-ifneq (, $(findstring 0.7, $(shell dfu-programmer --version 2>&1)))
-	$(DFU_PROGRAMMER) $(MCU) flash --eeprom $(BUILD_DIR)/$(TARGET).eep
-else
-	$(DFU_PROGRAMMER) $(MCU) flash-eeprom $(BUILD_DIR)/$(TARGET).eep
-endif
+	if $(DFU_PROGRAMMER) --version 2>&1 | grep -q 0.7 ; then\
+		$(DFU_PROGRAMMER) $(MCU) flash --eeprom $(BUILD_DIR)/$(TARGET).eep;\
+	else\
+		$(DFU_PROGRAMMER) $(MCU) flash-eeprom $(BUILD_DIR)/$(TARGET).eep;\
+	fi
 	$(DFU_PROGRAMMER) $(MCU) reset
 
 # Convert hex to bin.