gcc -D__KERNEL__ -I/usr/src/linux-2.4.21-20.EL/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common -Wno-unused -fomit-frame-pointer -pipe -freorder-blocks -mpreferred-stack-boundary=2 -march=i686 -DMODULE -DMODVERSIONS -include /usr/src/linux-2.4.21-20.EL/include/linux/modversions.h -nostdinc -iwithprefix include -DKBUILD_BASENAME=megaraid2 -c -o megaraid2.o megaraid2.c
2.2.20