[Buildroot] [PATCH 2/2 v2] package/patchelf: new host package

[Thomas Petazzoni <thomas.petazzoni@free-electrons.com>]

Dear Yann E. MORIN,

On Thu, 31 Jul 2014 00:57:16 +0200, Yann E. MORIN wrote:
> In some situations, users may want to tweak the dynamic section of the
> binaries (for example to add/set the RPATH to $ORIGIN/../lib).
> 
> Because it is not trivial to do it properly from the Buildroot
> infrastructure, allow those users to use patchelf (e.g. from a
> post-build script) to tweak binaries.
> 
> patchelf is able to:
>   - modify an existing DT_RUNPATH tags
>   - add a DT_RUNPATH tag if not already present
>   - do the above to the DT_RPATH tag, too
>   - set the path to the interpreter
>   - remove DT_NEEDED tags
>   - query a binary for the DT_RUNPATH/DT_RPATH tag, or for the
>     interpreter path
> 
> Does not really fix #7172, but this is an appropriate workaround.
> 
> Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
> Cc: Mike Zick <minimod@morethan.org>
> ---
>  package/Config.in.host          |  1 +
>  package/patchelf/Config.in.host |  7 +++++++
>  package/patchelf/patchelf.mk    | 12 ++++++++++++
>  3 files changed, 20 insertions(+)
>  create mode 100644 package/patchelf/Config.in.host
>  create mode 100644 package/patchelf/patchelf.mk
> 
> diff --git a/package/Config.in.host b/package/Config.in.host
> index 062c6c9..e05bbfa 100644
> --- a/package/Config.in.host
> +++ b/package/Config.in.host
> @@ -13,6 +13,7 @@ menu "Host utilities"
>  	source "package/omap-u-boot-utils/Config.in.host"
>  	source "package/openocd/Config.in.host"
>  	source "package/parted/Config.in.host"
> +	source "package/patchelf/Config.in.host"
>  	source "package/pwgen/Config.in.host"
>  	source "package/sam-ba/Config.in.host"
>  	source "package/squashfs/Config.in.host"
> diff --git a/package/patchelf/Config.in.host b/package/patchelf/Config.in.host
> new file mode 100644
> index 0000000..d1c8375
> --- /dev/null
> +++ b/package/patchelf/Config.in.host
> @@ -0,0 +1,7 @@
> +config BR2_PACKAGE_HOST_PATCHELF
> +	bool "host patchelf"
> +	help
> +	  PatchELF is a small utility to modify the dynamic linker
> +	  and RPATH of ELF executables.
> +
> +	  http://nixos.org/patchelf.html
> diff --git a/package/patchelf/patchelf.mk b/package/patchelf/patchelf.mk
> new file mode 100644
> index 0000000..1a8e48d
> --- /dev/null
> +++ b/package/patchelf/patchelf.mk
> @@ -0,0 +1,12 @@
> +################################################################################
> +#
> +# patchelf
> +#
> +################################################################################
> +
> +PATCHELF_VERSION = 0.8
> +PATCHELF_SITE = http://releases.nixos.org/patchelf/patchelf-0.8/
> +PATCHELF_LICENSE = GPLv3

The license is actually GPLv3+, see the README file of the project.

> +PATCHELF_LICENSE_FILES = COPYING
> +
> +$(eval $(host-autotools-package))

Other than that, applied, thanks!

I think it would be good to use that to make the toolchain relocatable,
instead of something like http://patchwork.ozlabs.org/patch/359841/.
What do you think?

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com