Re: [Buildroot] [PATCH 1/1] package/nodejs: fix cross-compile builds

["Yann E. MORIN" <yann.morin.1998@free.fr>]

Jens, All,

On 2023-09-23 12:59 +0200, Jens Maus via buildroot spake thusly:
> When nodejs is build a qemu wrapper script is used to execute
> some programs built for the target in user-mode emulation. However, in
> some constellations this causes the build to fail because libraries from
> the build host are used rather than from the target staging directory.
> This has been already reported [1] and throughoutly investigate [2].
> A commonly used fix for this issue is to explicitly use LD_LIBRARY_PATH
> to make sure that the correct runtime libraries are preferred rather
> than using libraries from the build host.

Compared to the in-depth analysis that Thomas did, the above was very,
very light. It did not even explain the core of the issue ("in some
constellations" is very vague, when Thomas explaned exactly what is
going on).

For such a difficult issue, we do want to carry the explanations in the
repository, when a remote URL may disapear any time.

So, I did duplicate most of Thomas analysis, and just tweaked it ever so
slightly so that it fits better as a commit log.

Applied to master, thanks.

Regards,
Yann E. MORIN.

> [1] https://bugs.busybox.net/show_bug.cgi?id=14366
> [2] https://lore.kernel.org/buildroot/20221031213926.50d3c778@windsurf/
> 
> Signed-off-by: Jens Maus <mail@jens-maus.de>
> ---
>  package/nodejs/v8-qemu-wrapper.in | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/package/nodejs/v8-qemu-wrapper.in b/package/nodejs/v8-qemu-wrapper.in
> index e1083f47f7..48222d089b 100644
> --- a/package/nodejs/v8-qemu-wrapper.in
> +++ b/package/nodejs/v8-qemu-wrapper.in
> @@ -5,5 +5,6 @@
>  exec @QEMU_USER@ -r @TOOLCHAIN_HEADERS_VERSION@ \
>      @QEMU_USERMODE_ARGS@ \
>     -L "${STAGING_DIR}/" \
> +   -E LD_LIBRARY_PATH="${STAGING_DIR}/lib:${STAGING_DIR}/usr/lib/" \
>      "$@"
>  
> -- 
> 2.34.1
> 
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