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-rw-r--r--Bootloaders/HID/makefile5
1 files changed, 3 insertions, 2 deletions
diff --git a/Bootloaders/HID/makefile b/Bootloaders/HID/makefile
index 02b884a31..baa14279e 100644
--- a/Bootloaders/HID/makefile
+++ b/Bootloaders/HID/makefile
@@ -31,8 +31,9 @@ BOOT_SECTION_SIZE_KB := 8
# Bootloader address calculation formulas (requires the "bc" unix utility)
# Do not modify these macros, but rather modify the depedant values above.
-BOOT_START_OFFSET = 0x$(shell echo "obase=16; ($(FLASH_SIZE_KB) - $(BOOT_SECTION_SIZE_KB)) * 1024" | bc)
-BOOT_SEC_OFFSET = 0x$(shell echo "obase=16; (($(FLASH_SIZE_KB) * 1024) - $(strip $(1)))" | bc)
+CALC_ADDRESS_IN_HEX = $(shell printf "0x%X" $$(( $(1) )) )
+BOOT_START_OFFSET = $(call CALC_ADDRESS_IN_HEX, ($(FLASH_SIZE_KB) - $(BOOT_SECTION_SIZE_KB)) * 1024 )
+BOOT_SEC_OFFSET = $(call CALC_ADDRESS_IN_HEX, ($(FLASH_SIZE_KB) * 1024) - $(strip $(1)) )
# Default target
all: