https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109616
--- Comment #3 from Zhengfeng Zhu <zzhu at greenliant dot com> --- -D__RISC_V__=1 -D__arm__ -D__FW_BCU__ -I"/cygdrive/F/Include" -Os2 -mcmodel=medium -g3 -Wall -mcpu=n25 -ffunction-sections -fdata-sections -c -fmessage-length=0 -msmall-data-limit=0 The .i file we can't show it here.