X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/b7e3c86e4e5d4262a608163176d0b01c0cc54b29..c786d8a0b7845eefc42df1c6dc3ea91c8785ad84:/Bootloaders/HID/makefile

diff --git a/Bootloaders/HID/makefile b/Bootloaders/HID/makefile
index b6477f961..baa14279e 100644
--- a/Bootloaders/HID/makefile
+++ b/Bootloaders/HID/makefile
@@ -9,6 +9,8 @@
 #         LUFA Project Makefile.
 # --------------------------------------
 
+# Run "make help" for target help.
+
 MCU          = at90usb1287
 ARCH         = AVR8
 BOARD        = USBKEY
@@ -29,8 +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: