Re: [Ltib] LTIB-11-4-1-SV Kernel Headers is not Installed

[Peter Barada]

Hi Daniel,

Unfortunately that won't work for all situations, it used to be that way.  Even more unfortunately (and I forget the details) the way the headers need to be installed has changed over time with both arch and kernel version.

So if it works for what you need that's fine, but it might be better to copy this to the platform specific directory (config/platform/ea....) until someone figures out a common approach that will work for all platforms/versions.  If you do that, you'll need to rm all the cached .spec files built from templates in tmp directory under your ltib project.

Stuart,

I did the same thing, but controlled it with "PKG_CONFIG_WANT_HEADERS_INSTALL" to allow the platform to select "make headers_install" instead of the current method, then if a platform wants "make headers_install" it just has to define PKG_CONFIG_WANT_HEADERS_INSTALL in its main.lkc...

When you say "copy this to the platform specific dir", do you mean to copy the whole kernel-common.tmpl to the config/platform/<platform> directory?

Regards, Stuart

On 02/04/12 07:23, Daniel Widyanto wrote:

Hi all,

 

I'm using ltib-11-4-1-sv to build linux-2.6.33 for EA3131 (Embedded Artist - LPC3131) board, and I found out that the kernel headers are not installed properly in rootfs/usr/src/linux/include. The LTIB kernel headers missed the Makefile to build external modules. So the header files cannot be used to compile external module / device drivers.

 

The common practice to install Linux-2.6 headers is to use 'make ARCH=arm INSTALL_HDR_PATH=${header_dir} headers_install'. I've updated 'dist/lfs-5.1/kernel/kernel-common.tmpl' to include it:

----------------------------------

if [ -n "$PKG_KERNEL_WANT_HEADERS" ]

then

    make ARCH=$LINTARCH HOSTCC="$BUILDCC" INSTALL_HDR_PATH=$RPM_BUILD_ROOT/%{pfx}/usr/src/linux headers_install

#    mkdir -p $RPM_BUILD_ROOT/%{pfx}/usr/src/linux/include

#    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 $RPM_BUILD_ROOT/%{pfx}/usr/src/linux/include

#        fi

#    done

#

#    for i in asm config linux

#    do

#        if [ -d $KBOUT/include/$i ]

#        then

#            cp -a $KBOUT/include/$i $RPM_BUILD_ROOT/%{pfx}/usr/src/linux/include

#        fi

#    done

#

#    if [ "${LINTARCH}" = "arm" ]

#    then

#        if [ -d "$KBOUT/include/asm/arch" ]

#        then

#            mkdir -p $RPM_BUILD_ROOT/%{pfx}/usr/src/linux/include/asm/arch

#            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

#    fi

fi

----------------------------------

However, in the rootfs/usr/src/linux/include, I still didn't see the Linux Makefile that can be used to compile external modules.

 

Regards,

Daniel Widyanto

Application Engineer, Global Sales & Marketing

NXP Semiconductors Singapore Pte Ltd

620A Lorong 1 Toa Payoh, TP4 Level 4, Singapore 319762

Tel: +65 68824211, Fax: +65 62506010, Mobile: +65 81289416

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Peter Barada
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