Add option for higher optimization levels

Author: siehputz

ports/atmel-samd/Makefile

@@ -106,6 +106,11 @@ CFLAGS += -Os -DNDEBUG
 CFLAGS += -DCFG_TUSB_MCU=OPT_MCU_SAMD51 -DCFG_TUD_MIDI_RX_BUFSIZE=128 -DCFG_TUD_CDC_RX_BUFSIZE=256 -DCFG_TUD_MIDI_TX_BUFSIZE=128 -DCFG_TUD_CDC_TX_BUFSIZE=256 -DCFG_TUD_MSC_BUFSIZE=1024
 endif
 
+ifdef OPTIMIZATION_LEVEL
+CFLAGS += -O$(OPTIMIZATION_LEVEL)
+endif
+
+
 $(echo PERIPHERALS_CHIP_FAMILY=$(PERIPHERALS_CHIP_FAMILY))
 #Debugging/Optimization
 ifeq ($(DEBUG), 1)

ports/atmel-samd/boards/itsybitsy_m4_express/mpconfigboard.mk

@@ -15,3 +15,5 @@ LONGINT_IMPL = MPZ
 CIRCUITPY_AUDIOBUSIO = 0
 
 CIRCUITPY_BITBANG_APA102 = 1
+
+OPTIMIZATION_LEVEL = 2

ports/atmel-samd/boards/pybadge/mpconfigboard.mk

@@ -16,3 +16,5 @@ CIRCUITPY_GAMEPADSHIFT = 1
 CIRCUITPY_STAGE = 1
 
 FROZEN_MPY_DIRS += $(TOP)/frozen/circuitpython-stage/pybadge
+
+OPTIMIZATION_LEVEL = 2

ports/atmel-samd/boards/pyportal/mpconfigboard.mk

@@ -10,3 +10,5 @@ QSPI_FLASH_FILESYSTEM = 1
 EXTERNAL_FLASH_DEVICE_COUNT = 2
 EXTERNAL_FLASH_DEVICES = "W25Q64JV_IQ, GD25Q64C"
 LONGINT_IMPL = MPZ
+
+OPTIMIZATION_LEVEL = 2

ports/cxd56/Makefile

@@ -123,6 +123,11 @@ CFLAGS += \
 	-fdata-sections \
 	-Wall \
 
+ifdef OPTIMIZATION_LEVEL
+CFLAGS += -O$(OPTIMIZATION_LEVEL)
+endif
+
+
 LIBM = "${shell "$(CC)" $(CFLAGS) -print-file-name=libm.a}"
 
 LIBGCC = "${shell "$(CC)" $(CFLAGS) -print-libgcc-file-name}"

ports/esp32s2/Makefile

@@ -109,6 +109,10 @@ else
   ### CFLAGS += -flto
 endif
 
+ifdef OPTIMIZATION_LEVEL
+CFLAGS += -O$(OPTIMIZATION_LEVEL)
+endif
+
 CFLAGS += $(INC) -Werror -Wall -mlongcalls -std=gnu11 -Wl,--gc-sections $(BASE_CFLAGS) $(C_DEFS) $(CFLAGS_MOD) $(COPT)
 
 LDFLAGS = $(CFLAGS) -Wl,-nostdlib  -Wl,-Map=$@.map -Wl,-cref

ports/litex/Makefile

@@ -83,6 +83,10 @@ else
   ### CFLAGS += -flto
 endif
 
+ifdef OPTIMIZATION_LEVEL
+CFLAGS += -O$(OPTIMIZATION_LEVEL)
+endif
+
 CFLAGS += $(INC) -Werror -Wall -std=gnu11 -nostdlib -fshort-enums $(BASE_CFLAGS) $(C_DEFS) $(CFLAGS_MOD) $(COPT)
 
 # TODO: check this

ports/mimxrt10xx/Makefile

@@ -108,6 +108,10 @@ CFLAGS += \
 	-Os -g3 -Wno-unused-parameter \
 	-ffunction-sections -fdata-sections -fstack-usage
 
+ifdef OPTIMIZATION_LEVEL
+CFLAGS += -O$(OPTIMIZATION_LEVEL)
+endif
+
 LD_FILES = $(wildcard boards/$(BOARD)/*.ld) $(addprefix linking/, flash/$(FLASH).ld chip_family/$(CHIP_FAMILY).ld common.ld)
 
 LD_SCRIPT_FLAG := -Wl,-T,

ports/nrf/Makefile

@@ -92,6 +92,9 @@ else
   CFLAGS += -flto -flto-partition=none
 endif
 
+ifdef OPTIMIZATION_LEVEL
+CFLAGS += -O$(OPTIMIZATION_LEVEL)
+endif
 
 CFLAGS += $(INC) -Wall -Werror -std=gnu11 -nostdlib -fshort-enums $(BASE_CFLAGS) $(CFLAGS_MOD) $(COPT)
 

ports/stm/Makefile

@@ -91,6 +91,10 @@ else
 	# CFLAGS += -flto
 endif
 
+ifdef OPTIMIZATION_LEVEL
+CFLAGS += -O$(OPTIMIZATION_LEVEL)
+endif
+
 # MCU Series is defined by the HAL package and doesn't need to be specified here
 C_DEFS = -D$(MCU_PACKAGE) -DUSE_HAL_DRIVER -DUSE_FULL_LL_DRIVER -D$(MCU_VARIANT)