[Buildroot] [PATCH] toolchain-external: fix support of uClibc-ng toolchains

[Yann E. MORIN]

On 2015-07-13 12:56 +0200, Thomas Petazzoni spake thusly:
> The uClibc-ng dynamic loader is called ld-uClibc.so.1, but gcc is not
> patched specifically for uClibc-ng, so it continues to generate
> binaries that expect the dynamic loader to be named ld-uClibc.so.0,
> like with the original uClibc.
> 
> Therefore, when a uClibc-ng toolchain is used as an external
> toolchain, we need to create an additional symbolic link to make
> uClibc-ng systems work properly.
> 
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
> ---
>  toolchain/toolchain-external/toolchain-external.mk | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/toolchain/toolchain-external/toolchain-external.mk b/toolchain/toolchain-external/toolchain-external.mk
> index 070f068..e6ad4c6 100644
> --- a/toolchain/toolchain-external/toolchain-external.mk
> +++ b/toolchain/toolchain-external/toolchain-external.mk
> @@ -710,6 +710,17 @@ define TOOLCHAIN_EXTERNAL_INSTALL_GDBINIT
>  	fi
>  endef
>  
> +# uClibc-ng dynamic loader is called ld-uClibc.so.1, but gcc is not
> +# patched specifically for uClibc-ng, so it continues to generate
> +# binaries that expect the dynamic loader to be named ld-uClibc.so.0,
> +# like with the original uClibc. Therefore, we create an additional
> +# symbolic link to make uClibc-ng systems work properly.
> +define TOOLCHAIN_EXTERNAL_FIXUP_UCLIBCNG_LDSO
> +	if test -L $(TARGET_DIR)/lib/ld-uClibc.so.1; then \

Use 'test -e' to just tet for existence: we don't care if it is a
symlink or a real file; we're just interested in the fact that it
exists.

> +		ln -s ld-uClibc.so.1 $(TARGET_DIR)/lib/ld-uClibc.so.0 ; \

ln -sf

Regards,
Yann E. MORIN.

> +	fi
> +endef
> +
>  define TOOLCHAIN_EXTERNAL_INSTALL_STAGING_CMDS
>  	$(TOOLCHAIN_EXTERNAL_INSTALL_SYSROOT_LIBS)
>  	$(TOOLCHAIN_EXTERNAL_INSTALL_WRAPPER)
> @@ -723,6 +734,7 @@ define TOOLCHAIN_EXTERNAL_INSTALL_TARGET_CMDS
>  	$(TOOLCHAIN_EXTERNAL_INSTALL_TARGET_LIBS)
>  	$(TOOLCHAIN_EXTERNAL_INSTALL_BFIN_FDPIC)
>  	$(TOOLCHAIN_EXTERNAL_INSTALL_BFIN_FLAT)
> +	$(TOOLCHAIN_EXTERNAL_FIXUP_UCLIBCNG_LDSO)
>  endef
>  
>  $(eval $(generic-package))
> -- 
> 2.4.5
> 
> _______________________________________________
> buildroot mailing list
> buildroot at busybox.net
> http://lists.busybox.net/mailman/listinfo/buildroot

-- 
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 223 225 172 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'