Re: [Ltib] How to check linux header files availability before compiling ?

[Stuart Hughes]

My apologies Franz,

To get a log:

$ ./ltib -p kernel 2>&1 | tee logfile

The .spec.in should copy that file (it does on other kernels).  Looking
at it it should be done here:

>         for i in asm-${LINTARCH} asm-generic config linux math-emu media
> mtd net pcmcia rxrpc scsi sound video
>         do
>             if [ -d include/$i ]
>             then
>                 cp -a include/$i ${KERNEL_HDR_PATH}/include
>             fi
>         done

When i is linux and it has a sub-dir include, then it should be copied
(IIRC).

Regards, Stuart


Franz TRIERWEILER wrote:
> Hi Stuart,
> 
> (Note I am FranZ, not FranK :-) )
> 
> Yes, it is a Freescale BSP. I can see  autoconf.h in the kernel sources
> (in the rpm/BUILD/linux-2.6.31/include/linux).
> 
> I tried to find a log for the rpm package install but did not find it.
> Which log corresponds to the kernel header package? I only know the host
> config but it is for LTIb first install, thus it is no use.
> 
> I checked the kernel-common.tmpl and I believe everything happens here:
> 
> if [ -n "$PKG_KERNEL_WANT_HEADERS" ]
> then
>     KERNEL_HDR_PATH=$RPM_BUILD_ROOT/%{pfx}/usr/src/linux
>     install -d ${KERNEL_HDR_PATH}/include
>     if ! make ARCH=$LINTARCH CROSS_COMPILE= HOSTCC="$BUILDCC"
> INSTALL_HDR_PATH=${KERNEL_HDR_PATH} headers_install
>     then
>         for i in asm-${LINTARCH} asm-generic config linux math-emu media
> mtd net pcmcia rxrpc scsi sound video
>         do
>             if [ -d include/$i ]
>             then
>                 cp -a include/$i ${KERNEL_HDR_PATH}/include
>             fi
>         done
> 
>         for i in asm config linux
>         do
>             if [ -d $KBOUT/include/$i ]
>             then
>                 cp -a $KBOUT/include/$i ${KERNEL_HDR_PATH}/include
>             fi
>         done
>     fi
> fi
> 
> In my opinion, the subdir ./linux should be copied (this is where
> autoconf.h is), but is not entirely copied...
> 
> Do you have a kernel-common.tmpl file I could check as a reference?
> 
> Regards,
> Franz
> 
> 
> 2010/6/14 Stuart Hughes <address@hidden <mailto:address@hidden>>
> 
>     Hi Frank,
> 
>     Maybe there was an error during rpm install that prevented the copy of
>     that header (can/did you check the build log)?
> 
>     Carefully check that the source that is being copied from is the right
>     place.  If the kernel is built out-of-tree, this location should be the
>     copy source directory.  Presumably this is a Freescale BSP? maybe they
>     changed/broke something in that copy (it may be worth checking
>     kernel-common.tmpl).
> 
>     Regarrds, Stuart
> 
> 
>     Franz TRIERWEILER wrote:
>     > Hi Stuart,
>     >
>     > $ rpm --root `pwd`/rootfs -qf /usr/src/linux/include/linux/
>     > acct.h
>     >
>     > returned kernel-2.6.31-imx_09.12.00
>     >
>     > My kernel is: 2.6.31-203-gee1fdae, as returned by uname -r on the
>     > Freescale board.
>     >
>     > I also forced a kernel rebuild but autoconf.h is still missing.
>     >
>     > Regards,
>     > Franz
>     >
>     >
>     > 2010/6/11 Stuart Hughes <address@hidden <mailto:address@hidden>
>     <mailto:address@hidden <mailto:address@hidden>>>
>     >
>     >     Hi Frank,
>     >
>     >     That's odd.  I now recall that in the old days the check was for
>     >     config.h and it changed to autoconf.h
>     >     http://www.mail-archive.com/address@hidden/msg09210.html
>     >
>     >     I just took a look at mpc8349itx BSP building a kernel.org
>     <http://kernel.org>
>     >     <http://kernel.org> 2.6.34-rc3
>     >     kernel, with install kernel headers and I see:
>     >
>     >     $ find rootfs/usr/src/linux/ -name autoconf.h
>     >     rootfs/usr/src/linux/include/linux/autoconf.h
>     >
>     >     Can you verify your headers are coming from the kernel.  I
>     just ran
>     >     this:
>     >
>     >     $ rpm --root `pwd`/rootfs -qf
>     /usr/src/linux/include/linux/autoconf.h
>     >     kernel-local-1
>     >
>     >     You can try:
>     >     $ rpm --root `pwd`/rootfs -qf /usr/src/linux/include/linux/acct.h
>     >
>     >     Unless someone else knows otherwise, I think autoconf.h should
>     still get
>     >     installed.  It may be worth forcing a kernel re-build and
>     logging it.
>     >     Maybe an error in the install script (or other) is causing the
>     copy of
>     >     this file to be bypassed for your kernel sources (BTW what kernel
>     >     version/sources is this?)
>     >
>     >     Regards, Stuart
>     >
>     >
>     >     Franz TRIERWEILER wrote:
>     >     > Hi Stuart,
>     >     >
>     >     > I confirm that I do have the interfaces on my rootfs:
>     >     >
>     >     > :~/ltib/rootfs/usr/src/linux/include/linux$ ls
>     >     > acct.h             dccp.h                if_bridge.h
>     >     > llc.h                param.h            som.h
>     >     > adb.h              dlmconstants.h        if_cablemodem.h
>     >     > loop.h               parport.h          sonet.h
>     >     > adfs_fs.h          dlm_device.h          if_ec.h
>     >     > lp.h                 patchkey.h         sonypi.h
>     >     > affs_hardblocks.h  dlm.h                 if_eql.h
>     >     > magic.h              pci.h              soundcard.h
>     >     > .....
>     >     > .....
>     >     > .....
>     >     >
>     >     > :~/ltib/rootfs/usr/src/linux/include/linux$ ls auto*
>     >     > auto_fs4.h  auto_fs.h
>     >     >
>     >     > But no autoconf.h !
>     >     >
>     >     > Indeed, the following options are checked in LTIB:
>     >     >
>     >     >   │ │                                 [*] Always rebuild the
>     >     > kernel
>     >     > │ │
>     >     >   │ │                                 [ ] Produce cscope
>     >     > index
>     >     > │ │
>     >     >   │ │                                 [*] Include kernel
>     >     > headers
>     >     > │ │
>     >     >   │ │                                 [ ] Configure the
>     >     > kernel
>     >     > │ │
>     >     >   │ │                                 --- Leave the sources
>     after
>     >     > building
>     >     > │ │
>     >     >
>     >     > Maybe should not we just check the availability of
>     >     > rootfs/usr/src/linux/include/linux directory instead of a single
>     >     file in
>     >     > order to know if kernel headers are available ?
>     >     >
>     >     > regards,
>     >     > Franz
>     >     >
>     >     > 2010/6/11 Stuart Hughes <address@hidden <mailto:address@hidden>
>     <mailto:address@hidden <mailto:address@hidden>>
>     >     <mailto:address@hidden <mailto:address@hidden>
>     <mailto:address@hidden <mailto:address@hidden>>>>
>     >     >
>     >     >     Hi Franz,
>     >     >
>     >     >     This file will always be in
>     >     rpm/BUILD/linux-xxxxxx/include/linux if left
>     >     >     unpacked.  However the interface should be through
>     >     rootfs/usr/src/linux
>     >     >     (DEV_IMAGE...).  This is the public interface for kernel
>     headers.
>     >     >     Confirm that you have these installed on your rootfs
>     (there is
>     >     an option
>     >     >     in LTIB to install kernel headers).
>     >     >
>     >     >     If you do have kernel headers installed, It's possible
>     that later
>     >     >     kernels do not install this file any more?  maybe a kernel
>     >     expert on the
>     >     >     list knows (I vaguely remember something like this).
>     >     >
>     >     >     Unfortunately today's best practice is tomorrows
>     >     >     _rug_pulled_from_under_your_feet.
>     >     >
>     >     >     Regards, Stuart
>     >     >
>     >     >
>     >     >     Franz TRIERWEILER wrote:
>     >     >     > Hi Stuart,
>     >     >     >
>     >     >     > I included and tested this. What's weird with my LTIB is
>     >     that the
>     >     >     > autoconf.h file is never copied to
>     KHDR_DIR/linux/autoconf.h
>     >     even
>     >     >     when I
>     >     >     > select 'Include kernel headers' in LTIB.
>     >     >     >
>     >     >     > Instead, this file is with the kernel sources in
>     >     >     > rpm/BUILD/linux-xxxxxx/include/linux
>     >     >     >
>     >     >     > Thus: why ?
>     >     >     >
>     >     >     > Of course, I could check the availability of another
>     file but I
>     >     >     want to
>     >     >     > comply with the best practice.
>     >     >     >
>     >     >     > Franz
>     >     >     >
>     >     >     > 2010/6/9 Stuart Hughes <address@hidden
>     <mailto:address@hidden> <mailto:address@hidden <mailto:address@hidden>>
>     >     <mailto:address@hidden <mailto:address@hidden>
>     <mailto:address@hidden <mailto:address@hidden>>>
>     >     >     <mailto:address@hidden <mailto:address@hidden>
>     <mailto:address@hidden <mailto:address@hidden>>
>     >     <mailto:address@hidden <mailto:address@hidden>
>     <mailto:address@hidden <mailto:address@hidden>>>>>
>     >     >     >
>     >     >     >     Hi Franz,
>     >     >     >
>     >     >     >     I normally use this in the .spec file %build section:
>     >     >     >
>     >     >     >
>     >     >     >     %Build
>     >     >     >     KHDR_DIR=$DEV_IMAGE/usr/src/linux/include
>     >     >     >     if [ ! -f $KHDR_DIR/linux/autoconf.h ]
>     >     >     >     then
>     >     >     >        cat <<TXT
>     >     >     >
>     >     >     >     No file: $KHDR_DIR/linux/autoconf.h
>     >     >     >
>     >     >     >     You need to build the kernel and have 'Include kernel
>     >     headers' set
>     >     >     >     to build this package
>     >     >     >
>     >     >     >     TXT
>     >     >     >        exit 1
>     >     >     >     fi
>     >     >     >
>     >     >     >     Regards, Stuart
>     >     >     >
>     >     >     >
>     >     >     >     Franz TRIERWEILER wrote:
>     >     >     >     > Hi,
>     >     >     >     >
>     >     >     >     > My package Makefile needs to set gcc include path to
>     >     the kernel
>     >     >     >     headers
>     >     >     >     > (rootfs/usr/src/linux/include). I would like the
>     >     >     availability of these
>     >     >     >     > files to be checked before gcc prints a cryptic
>     error.
>     >     >     >     >
>     >     >     >     > Is there a way of checking linux header availability
>     >     before
>     >     >     compiling?
>     >     >     >     > (my makefile is not generated by ./configure).
>     >     >     >     >
>     >     >     >     > Must I specify this in the package dependencies?
>     >     >     >     >
>     >     >     >     > Is there a LTIB parameter I can catch from the
>     Makefile to
>     >     >     set the
>     >     >     >     path
>     >     >     >     > automatically ?
>     >     >     >     >
>     >     >     >     > Thanks,
>     >     >     >     > Franz
>     >     >     >     >
>     >     >     >     >
>     >     >     >
>     >     >     >
>     >     >
>     >     >
>     >
>     >
> 
>