Merge pull request #999 from keyboardio/makefile-optimzation

A handful of changes to make the makefiles lazier to shave off a few % off execution time for trivial make invocations

etc/makefiles/arduino-cli.mk

@@ -17,7 +17,10 @@ endif
 # Build path config
 TMPDIR ?= /tmp
 
-export KALEIDOSCOPE_DIR ?= $(abspath $(mkfile_dir)/../..)
+ifeq ($(KALEIDOSCOPE_DIR),)
+export KALEIDOSCOPE_DIR := $(abspath $(mkfile_dir)/../..)
+endif
+
 KALEIDOSCOPE_BIN_DIR ?= $(KALEIDOSCOPE_DIR)/bin
 KALEIDOSCOPE_ETC_DIR ?= $(KALEIDOSCOPE_DIR)/etc
 
@@ -72,19 +75,20 @@ endif
 
 endif
 
-
-
-system_arduino_cli=$(shell command -v arduino-cli || true)
-
 arduino_env = ARDUINO_DIRECTORIES_USER=$(ARDUINO_DIRECTORIES_USER) \
 	      ARDUINO_DIRECTORIES_DATA=$(ARDUINO_DIRECTORIES_DATA)
 
+ifeq ($(ARDUINO_CLI_PATH),) 
+
+system_arduino_cli ?= $(shell command -v arduino-cli || true)
+
 ifeq ($(system_arduino_cli),) 
 export ARDUINO_CLI_PATH ?= $(KALEIDOSCOPE_BIN_DIR)/arduino-cli
 else
 export ARDUINO_CLI_PATH ?= $(system_arduino_cli)
 endif
 
+endif
 
 export ARDUINO_CLI ?= $(arduino_env) $(ARDUINO_CLI_PATH)
 

etc/makefiles/sketch.mk

@@ -33,8 +33,9 @@ endif
 # but since we'd just return an empty value in that case, why bother?
 GIT_VERSION := $(shell git -C "$(SKETCH_DIR)" describe --abbrev=6 --dirty --alway  2>/dev/null || echo 'unknown')
 
-SKETCH_IDENTIFIER ?= $(shell echo "${SKETCH_FILE_PATH}" | cksum | cut -d ' ' -f 1)-$(SKETCH_FILE_NAME)
+ifeq ($(SKETCH_IDENTIFIER),)
-
+SKETCH_IDENTIFIER := $(shell echo "${SKETCH_FILE_PATH}" | cksum | cut -d ' ' -f 1)-$(SKETCH_FILE_NAME)
+endif
 
 BUILD_PATH ?= $(KALEIDOSCOPE_BUILD_PATH)/$(SKETCH_IDENTIFIER)
 OUTPUT_PATH ?= $(KALEIDOSCOPE_OUTPUT_PATH)/$(SKETCH_IDENTIFIER)
@@ -106,7 +107,9 @@ endif
 
 # Flashing related config
 ifneq ($(FQBN),)
-KALEIDOSCOPE_DEVICE_PORT ?= $(shell $(ARDUINO_CLI) board list --format=text | grep $(FQBN) |cut -d' ' -f 1)
+ifeq ($(KALEIDOSCOPE_DEVICE_PORT),)
+KALEIDOSCOPE_DEVICE_PORT = $(shell $(ARDUINO_CLI) board list --format=text | grep $(FQBN) |cut -d' ' -f 1)
+endif
 endif
 
 flashing_instructions	:= $(call _arduino_prop,build.flashing_instructions)
@@ -114,7 +117,7 @@ ifeq ($(flashing_instructions),)
 flashing_instructions	:= "If your keyboard needs you to do something to put it in flashing mode, do that now."
 endif
 
-unescaped_flashing_instructions := $(shell printf $(flashing_instructions) )
+unescaped_flashing_instructions = $(shell printf $(flashing_instructions) )
 
 DEFAULT_GOAL: compile
 
@@ -194,16 +197,18 @@ endif
 #TODO (arduino team) I'd love to do this with their json output
 #but it's short some of the data we kind of need
 
-flash:
+.PHONY: ensure-device-port-defined
-ifeq ($(KALEIDOSCOPE_DEVICE_PORT),)
-	$(info ERROR: Unable to detect keyboard serial port.)
-	$(info )
-	$(info Arduino should autodetect it, but you could also set )
-	$(info KALEIDOSCOPE_DEVICE_PORT to your keyboard's serial port.)
-	$(info )
-	$(error )
 
-endif
+ensure-device-port-defined:  
+	@if [ -z $(KALEIDOSCOPE_DEVICE_PORT) ]; then \
+	echo "ERROR: Unable to detect keyboard serial port.";\
+	echo ;\
+	echo "Arduino should autodetect it, but you could also set";\
+	echo "KALEIDOSCOPE_DEVICE_PORT to your keyboard's serial port.";\
+	echo ;\
+	exit -1;fi
+
+flash: ensure-device-port-defined
 	$(info $(unescaped_flashing_instructions))
 	$(info )
 	$(info When you're ready to proceed, press 'Enter'.)