Allow use of a custom startup file #353
Merged
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Syntax in the board.txt:
xxx.build.startup_file=-DCUSTOM_STARTUP_FILE
Example to use a custom startup file for Nucleo_L476RG:
Nucleo_64.menu.pnum.NUCLEO_L476RG.build.startup_file=-DCUSTOM_STARTUP_FILE
Then add a "*.S" file in the "variant/NUCLEO_L476RG/" folder
Important note: extension must be '.S' not '.s'
CUSTOM_STARTUP_FILE
could also be defined thanks the build_opt.h.CMSIS_STARTUP_FILE
could now be overridden using the build_opt.h, ex:-DCMSIS_STARTUP_FILE=\"startup_stm32l476xx.s\"
Fix #352