UML kernel compile
 

I am attempting to compile a UML kernel and running into some problems. I am compiling it on a Slackware 8.1 system with the kernel upgraded to 2.4.20.

The kernel I am attempting to compile is 2.4.19 and I am using the uml-patch-2.4.19-50.bz2 UML patch.

The steps I run are listed below

1. Extract the kernel source.
2. Copy uml-patch-2.4.19-50.bz2 in to the root of the source tree
3. Run “bzcat unl-patch-2.4.19-50.bz2 | patch –p1”
4. Run “make menuconfig ARCH=um”
5. Used the default kernel options
6. Run “make dep ARCH=um” (Tried it with and without this step)
7. Run “make linux ARCH=um”

After compiling for a while it errors out with the following output.

gcc -nostdinc -I /usr/lib/gcc-lib/i386-slackware-linux/2.95.3/include -
DKBUILD_BASENAME=hppfs_kern -D__KERNEL__ -
I/usr/local/src/uml/linux-2.4.19/include -Wall -Wstrict-prototypes -Wno-
trigraphs -O2 -fno-strict-aliasing -fno-common -U__i386__ -Ui386 -DUM_FASTCALL
-g -D__arch_um__ -DSUBARCH="i386" -D_LARGEFILE64_SOURCE -
I/usr/local/src/uml/linux-2.4.19/arch/um/include -Derrno=kernel_errno -
I/usr/local/src/uml/linux-2.4.19/arch/um/kernel/tt/include -
I/usr/local/src/uml/linux-2.4.19/arch/um/kernel/skas/include -c -o hppfs_kern.
o hppfs_kern.c
In file included from /usr/local/src/uml/linux-2.4.19/include/linux/posix_types.
h:46,
from /usr/local/src/uml/linux-2.4.19/include/linux/types.h:8,
from /usr/local/src/uml/linux-2.4.19/include/linux/kernel.h:13,
from /usr/local/src/uml/linux-2.4.19/include/linux/wait.h:13,
from /usr/local/src/uml/linux-2.4.19/include/linux/fs.h:12,
from hppfs_kern.c:6:
/usr/lib/gcc-lib/i386-slackware-linux/2.95.3/include/asm/posix_types.h:3:
features.h: No such file or directory


I have a file called features.h and it is located at /usr/include/features.h


Any help would be appreciated

Try running the following command in your kernel source tree:

yes "" | make config

Then do a compile on your kernel. If possible, keep your UML tree seperate from your main kernel tree. (eg, /usr/src/linux-2.4.19-uml)