A blank project with the Makefile toolchain will cause the following issue# C includes
C_INCLUDES = \
-ICore/Inc \
-IDrivers/STM32F4xx_HAL_Driver/Inc \
-IDrivers/STM32F4xx_HAL_Driver/Inc/Legacy \
-IDrivers/CMSIS/Device/ST/STM32F4xx/Include \
-IDrive...