Re: [Ltib] config option use BSP kernel headers with >= linux-2.6.17

[Aaron Wegner]

Thanks Peter.

That could be a good patch for the LTIB to accommodate more recent kernels
in the case of a target system built using the kernel headers.  I've
attached my patch (almost the same as yours except you don't need the
mkdir for the make headers_install).  I've also attached a patch for a
main.lkc file that wants to use this configuration option.

> On 03/19/2013 03:35 PM, Aaron Wegner wrote:
>> Going through the Git log of the Linux kernel it seems like there has
>> been
>> a basic implementation of 'make headers_install' since about 2.6.17.  I
>> was trying to install the headers of a 3.8 kernel and running into some
>> problems.  I seemed to be able to overcome these by editing
>> dist/lfs-5.1/kernel/kernel-common.tmpl and replacing the
>> PKG_KERNEL_WANT_HEADERS section with the following.
>>
>> if [ -n "$PKG_KERNEL_WANT_HEADERS" ]
>> then
>>     make ARCH=$LINTARCH HOSTCC="$BUILDCC"
>> INSTALL_HDR_PATH=$RPM_BUILD_ROOT/%{pfx}/usr/src/linux headers_install
>> fi
>>
>> Maybe this could be a patch?  Not exactly sure how to specify the
>> condition that the kernel version is greater than or equal to one in
>> which
>> the 'make headers_install' is working well, but for recent kernels the
>> current LTIB spec file fails since the includes are reordered from the
>> old
>> way.
> Some platforms use pre-2.6.17 kernels so you'll need code to switch
> between the headers_intall and the old method to install the kernel
> headers...
>
>
> You could add the following to your platform main.lkc
>
> config PKG_KERNEL_WANT_HEADERS_INSTALL
>     bool "install kernel headers using headers_install"
>     help
>       Post 2.6.17 kernels use "make headers_install" to install kernel
> headers into sysroot; select
>       2.6.17 and newer kernels
>
> Then in dist/lfs-5.1/kernel/kernel-common.tmpl modify the header
> installation to use headers_install if PKG_KERNEL_WANT_HEADERS_INSTALLED
> is enabled, else fall back to the old method:
>
> diff --git a/dist/lfs-5.1/kernel/kernel-common.tmpl
> b/dist/lfs-5.1/kernel/kernel-common.tmpl
> index 3edda42..a1df62f 100644
> --- a/dist/lfs-5.1/kernel/kernel-common.tmpl
> +++ b/dist/lfs-5.1/kernel/kernel-common.tmpl
> @@ -296,31 +296,36 @@ fi
>  if [ -n "$PKG_KERNEL_WANT_HEADERS" ]
>  then
>      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 $RPM_BUILD_ROOT/%{pfx}/usr/src/linux/include
> -        fi
> -    done
> +    if [ -n "$PKG_KERNEL_WANT_HEADERS_INSTALL" ]
> +    then
> +        make ARCH=${LINTARCH} HOSTCC="$BUILDCC" headers_install
> INSTALL_HDR_PATH=$RPM_BUILD_ROOT/%{pfx}/usr/src/linux
> +    else
> +        for i in asm-${LINTARCH} asm-generic config linux math-emu
> media mtd net pcmcia rxrpc scsi sound video generated
> +        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
> +    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/*
> $RPM_BUILD_ROOT/%{pfx}/usr/src/linux/include/asm/arch
> -        else
> -            echo "Don't know how to copy asm headers for this kernel"
> -        fi
> +    if [ "${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
>  fi
>
> Then if you "./ltib -c" and select the "install kernel headers using
> headers_install" to enable it, save/exit it should build/install your
> kernel, and then install the headers using the headers_install target.
>
> --
> Peter Barada
> address@hidden
>
>
> _______________________________________________
> LTIB home page: http://ltib.org
>
> Ltib mailing list
> address@hidden
> https://lists.nongnu.org/mailman/listinfo/ltib
>

ltib-want-headers-install.patch
Description: Binary data

main.lkc-want-headers-install.patch
Description: Binary data