X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/9c590e41d716e7afb9bd45a86e811a6a58096771..04d13d264c924d5c3380076f8977ca2dd0b14fd8:/Bootloaders/CDC/makefile

diff --git a/Bootloaders/CDC/makefile b/Bootloaders/CDC/makefile
index b34745c81..97b714d0b 100644
--- a/Bootloaders/CDC/makefile
+++ b/Bootloaders/CDC/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)) )
 
 # Bootloader linker section flags for relocating the API table sections to
 # known FLASH addresses - these should not normally be user-edited.