[Buildroot] [PATCH] toolchain-external: fix rebuild/reinstall for Linaro toolchains

[Arnout Vandecappelle]

On 29/04/15 12:28, Thomas Petazzoni wrote:
> For Linaro toolchains, a special post install staging hook is used to
> create two symlinks needed for the dynamic loader to find the
> libraries. However, the way the link is created prevents a 'make
> toolchain-external-reinstall' from succeeding, because the symlink
> already exists and points to a directory:
> 
> ln -sf . /home/thomas/projets/outputs/training/target/lib/arm-linux-gnueabihf
> ln: '/home/thomas/projets/outputs/training/target/lib/arm-linux-gnueabihf/.': cannot overwrite directory
> 
> This commit adjust the hook to pass the '-n' option so that the link
> name is treated as a normal file if it is a symbolic link to a
> directory.
> 
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>

Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout at mind.be>

> ---
>  toolchain/toolchain-external/toolchain-external.mk | 12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/toolchain/toolchain-external/toolchain-external.mk b/toolchain/toolchain-external/toolchain-external.mk
> index fd796a0..35bba31 100644
> --- a/toolchain/toolchain-external/toolchain-external.mk
> +++ b/toolchain/toolchain-external/toolchain-external.mk
> @@ -239,18 +239,18 @@ endif
>  # {/usr,}/lib/arm-linux-gnueabihf, but Buildroot copies them to
>  # {/usr,}/lib, so we need to create a symbolic link.
>  define TOOLCHAIN_EXTERNAL_LINARO_ARMHF_SYMLINK
> -	ln -sf . $(TARGET_DIR)/lib/arm-linux-gnueabihf
> -	ln -sf . $(TARGET_DIR)/usr/lib/arm-linux-gnueabihf
> +	ln -snf . $(TARGET_DIR)/lib/arm-linux-gnueabihf
> +	ln -snf . $(TARGET_DIR)/usr/lib/arm-linux-gnueabihf
>  endef
>  
>  define TOOLCHAIN_EXTERNAL_LINARO_ARMEBHF_SYMLINK
> -	ln -sf . $(TARGET_DIR)/lib/armeb-linux-gnueabihf
> -	ln -sf . $(TARGET_DIR)/usr/lib/armeb-linux-gnueabihf
> +	ln -snf . $(TARGET_DIR)/lib/armeb-linux-gnueabihf
> +	ln -snf . $(TARGET_DIR)/usr/lib/armeb-linux-gnueabihf
>  endef
>  
>  define TOOLCHAIN_EXTERNAL_LINARO_AARCH64_SYMLINK
> -	ln -sf . $(TARGET_DIR)/lib/aarch64-linux-gnu
> -	ln -sf . $(TARGET_DIR)/usr/lib/aarch64-linux-gnu
> +	ln -snf . $(TARGET_DIR)/lib/aarch64-linux-gnu
> +	ln -snf . $(TARGET_DIR)/usr/lib/aarch64-linux-gnu
>  endef
>  
>  ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM201305),y)
> 


-- 
Arnout Vandecappelle                          arnout at mind be
Senior Embedded Software Architect            +32-16-286500
Essensium/Mind                                http://www.mind.be
G.Geenslaan 9, 3001 Leuven, Belgium           BE 872 984 063 RPR Leuven
LinkedIn profile: http://www.linkedin.com/in/arnoutvandecappelle
GPG fingerprint:  7CB5 E4CC 6C2E EFD4 6E3D A754 F963 ECAB 2450 2F1F