[Ltib] RE: Spec changes for later kernel header copies

[Kevin Wells]

Hi Stuart,

I have some more info on this..

> > In the mean time, do you know if the files that get build in
> > linux-2.6.34/include/generated are normally installed to userspace? for
> > example have you seen them in toolchains?  Have you seen anyone comment
> > otherwise about these.
> >
I don't think any of these are installed in userspace. For the toolchains I
have (3), there is only 1 common file (autoconf.h) but the info in the file
is different. The files deals with version numbers, mach IDs, etc.

> > Also, do you know if any files in generated would clobber any existing
> > files in the rootfs if they were copied into
> > rootfs/usr/src/linux/include ?
Every file was unique for the files I've tested. There are only 6 files in
there now.

> > It seems to me that this may be a better place rather than adding a new
> > directory.  However I say this in ignorance of know what (if any)
> > custom
> > is not currently in force.  For example, what does "make
> > headers_install" do for ARM these days?
The 'generated' folder is not copied as part of 'headers_install'. Maybe
these don't need to be copied at all? Here is the complete list..
address@hidden linux-2.6.34]$ make ARCH=arm C=1 
CROSS_COMPILE=/opt/freescale/usr/local/gcc-4.1.2-glibc-2.5-nptl-3/arm-none-linux-gnueabi/bin/arm-none-linux-gnueabi-
 headers_install
  CHK     include/linux/version.h
  HOSTCC  scripts/unifdef
  INSTALL include/asm-generic (34 files)
  INSTALL include/drm (14 files)
  INSTALL include/linux/byteorder (2 files)
  INSTALL include/linux/can (4 files)
  INSTALL include/linux/dvb (8 files)
  INSTALL include/linux/hdlc (1 file)
  INSTALL include/linux/isdn (1 file)
  INSTALL include/linux/netfilter (64 files)
  INSTALL include/linux/netfilter_arp (2 files)
  INSTALL include/linux/netfilter_bridge (16 files)
  INSTALL include/linux/netfilter_ipv4 (14 files)
  INSTALL include/linux/netfilter_ipv6 (11 files)
  INSTALL include/linux/nfsd (6 files)
  INSTALL include/linux/raid (2 files)
  INSTALL include/linux/spi (1 file)
  INSTALL include/linux/sunrpc (1 file)
  INSTALL include/linux/tc_act (6 files)
  INSTALL include/linux/tc_ematch (4 files)
  INSTALL include/linux/usb (8 files)
  INSTALL include/linux/wimax (1 file)
  INSTALL include/linux (360 files)
  INSTALL include/mtd (5 files)
  INSTALL include/rdma (1 file)
  INSTALL include/scsi/fc (4 files)
  INSTALL include/scsi (3 files)
  INSTALL include/sound (8 files)
  INSTALL include/video (3 files)
  INSTALL include/xen (1 file)
  INSTALL include (0 file)
  INSTALL include/asm (32 files)
address@hidden linux-2.6.34]$ ls include/generated/
asm-offsets.h  autoconf.h  bounds.h  compile.h  mach-types.h  utsrelease.h
address@hidden linux-2.6.34]$ 

thanks,
Kevin

> -----Original Message-----
> From: address@hidden [mailto:ltib-
> address@hidden On Behalf Of Kevin Wells
> Sent: Thursday, August 05, 2010 11:09 AM
> To: Stuart Hughes
> Cc: address@hidden
> Subject: [Ltib] RE: Spec changes for later kernel header copies
> 
> 
> Hi Stuart,
> 
> I like your suggestion better. I'll look into this a bit more from
> your questions below..
> 
> thanks,
> Kevin
> 
> 
> > Subject: Re: Spec changes for later kernel header copies
> >
> > Hi Kevin,
> >
> > Let me take a look and get back to you after I've done some building
> > and
> > looking.  My first thought is that in DirectFB, we can just test for
> > the
> > kernel headers directory, as you didn't change the 'make' target and
> > that still built (without needing to reference 'generated').
> >
> > In the mean time, do you know if the files that get build in
> > linux-2.6.34/include/generated are normally installed to userspace? for
> > example have you seen them in toolchains?  Have you seen anyone comment
> > otherwise about these.
> >
> > Also, do you know if any files in generated would clobber any existing
> > files in the rootfs if they were copied into
> > rootfs/usr/src/linux/include ?
> >
> > It seems to me that this may be a better place rather than adding a new
> > directory.  However I say this in ignorance of know what (if any)
> > custom
> > is not currently in force.  For example, what does "make
> > headers_install" do for ARM these days?
> >
> > Regards, Stuart
> >
> >
> > Kevin Wells wrote:
> > > Hi Staurt,
> > >
> > > The autoconf.h file is now located in the ./include/generated
> > directory
> > > instead of the ./include/linux directory in later kernel source. This
> > > breaks the directfb spec which searches for it in ./include/linux.
> > >
> > > address@hidden BUILD]$ pwd
> > > /home/usb10132/dev/ltib/rpm/BUILD
> > >
> > > address@hidden BUILD]$ find . -name autoconf.*
> > > ./linux-2.6.34/include/generated/autoconf.h
> > > ./linux-2.6.27.8/include/linux/autoconf.h
> > > address@hidden BUILD]$
> > >
> > > This currently seems to only break the directfb build for LPC32xx and
> > > LPC313x platforms using the later kernels (2.6.34 and 2.6.33(?)).
> > >
> > > I've attached a possible fix. This has been build tested with kernel
> > > Versions 2.6.34 (LPC32xx), 2.6.27 (LPC32xx), and 2.6.15 (epx93xx).
> > >
> > > Is this something that can be placed into the respective specs?
> > >
> > > thanks,
> > > Kevin
> > >
> > > Index: DirectFB/DirectFB.spec
> > > ===================================================================
> > > RCS file: /sources/ltib/ltib/dist/lfs-5.1/DirectFB/DirectFB.spec,v
> > > retrieving revision 1.5
> > > diff -U 4 -r1.5 DirectFB.spec
> > > --- DirectFB/DirectFB.spec        5 Dec 2008 16:32:13 -0000       1.5
> > > +++ DirectFB/DirectFB.spec        3 Aug 2010 17:25:33 -0000
> > > @@ -27,17 +27,20 @@
> > >  %Build
> > >  KHDR_DIR=$DEV_IMAGE/usr/src/linux/include
> > >  if [ ! -f $KHDR_DIR/linux/autoconf.h ]
> > >  then
> > > -    cat <<TXT
> > > +     if [ ! -f $KHDR_DIR/generated/autoconf.h ]
> > > +     then
> > > +        cat <<TXT
> > >
> > >  No file: $KHDR_DIR/linux/autoconf.h
> > >
> > >  You need to build the kernel and have 'Include kernel headers' set
> > >  to build this package
> > >
> > >  TXT
> > > -    exit 1
> > > +        exit 1
> > > +    fi
> > >  fi
> > >  export FREETYPE_CONFIG=${DEV_IMAGE}/usr/bin/freetype-config
> > >  export FREETYPE_CFLAGS="`${FREETYPE_CONFIG} --
> > prefix=${DEV_IMAGE}/%{_prefix} --cflags`"
> > >  export FREETYPE_LIBS="`${FREETYPE_CONFIG} --
> > prefix=${DEV_IMAGE}/%{_prefix} --libs`"
> > > Index: kernel/kernel-common.tmpl
> > > ===================================================================
> > > RCS file: /sources/ltib/ltib/dist/lfs-5.1/kernel/kernel-common.tmpl,v
> > > retrieving revision 1.9
> > > diff -U 4 -r1.9 kernel-common.tmpl
> > > --- kernel/kernel-common.tmpl     6 Jul 2009 07:52:02 -0000       1.9
> > > +++ kernel/kernel-common.tmpl     3 Aug 2010 17:25:33 -0000
> > > @@ -320,8 +320,14 @@
> > >              cp -a $KBOUT/include/asm/arch/*
> > $RPM_BUILD_ROOT/%{pfx}/usr/src/linux/include/asm/arch
> > >          else
> > >              echo "Don't know how to copy asm headers for this
> > kernel"
> > >          fi
> > > +
> > > +        if [ -d "$KBOUT/include/generated" ]
> > > +        then
> > > +            mkdir -p
> > $RPM_BUILD_ROOT/%{pfx}/usr/src/linux/include/generated
> > > +            cp -a $KBOUT/include/generated/*
> > $RPM_BUILD_ROOT/%{pfx}/usr/src/linux/include/generated
> > > +        fi
> > >      fi
> > >  fi
> > >
> 
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