[Buildroot] [PATCH] package/nodejs: expose capability to compile host library

[Peter Seiderer <ps.report@gmx.net>]

Hello Linus,

On Sat, 16 May 2020 23:57:45 +0000, Linus Kaschulla <linus@cosmos-ink.net> wrote:

> To use nodejs on the host (independant of the actual system)
> to create some static files to place onto the target rootfs
> nodejs can be very helpful.
>
> The provided nodejs package didn't show the possibility to
> create a host package. But upon further examination I noticed
> that the package does it in fact (in the .mk). It specifies
> dependencies for the package with the host prefix and also
> invokes $(host-generic-package) as well as $(generic-package)
> which is the only one assumed from the config.
>
> This commit adds a Config.in.host file that uses the
> dependencies given from HOST_NODEJS_DEPENDENCIES in the makefile.
> (It also add the host config to the package overview.)
>
> With this change other packages can require BR2_PACKAGE_HOST_NODEJS
> without any problems or the buildsystem not fully knowing about this.
> Seems that someone added the capability (as a step for the cross-
> compiled nodejs) and didn't notice that this is a handy package by itself.
>
> When installing global npm packages (with -g), the parameter
> `--prefix $(HOST_DIR)` can be used to ensure that nodejs doesn't try
> to install it onto the real host filesystem.
>
> I already used this change to create static web files from Angular
> and place onto a target that doesn't need nodejs itself.
>
> Signed-off-by: Linus Kaschulla <linus@cosmos-ink.net>
> ---
>  package/Config.in.host        | 1 +
>  package/nodejs/Config.in.host | 5 +++++
>  2 files changed, 6 insertions(+)
>  create mode 100644 package/nodejs/Config.in.host
>
> diff --git a/package/Config.in.host b/package/Config.in.host
> index f1246c708f..510249a496 100644
> --- a/package/Config.in.host
> +++ b/package/Config.in.host
> @@ -48,6 +48,7 @@ menu "Host utilities"
>  	source "package/mtd/Config.in.host"
>  	source "package/mtools/Config.in.host"
>  	source "package/mxsldr/Config.in.host"
> +	source "package/nodejs/Config.in.host"
>  	source "package/omap-u-boot-utils/Config.in.host"
>  	source "package/openocd/Config.in.host"
>  	source "package/opkg-utils/Config.in.host"
> diff --git a/package/nodejs/Config.in.host b/package/nodejs/Config.in.host
> new file mode 100644
> index 0000000000..af8d7b4e44
> --- /dev/null
> +++ b/package/nodejs/Config.in.host
> @@ -0,0 +1,5 @@
> +config BR2_PACKAGE_HOST_NODEJS
> +	bool "host nodejs"
> +	select BR_PACKAGE_HOST_LIBOPENSSL
> +    select BR_PACKAGE_HOST_PYTHON
> +    select BR_PACKAGE_HOST_ZLIB

Indent should use tabs (instead of spaces)...

Regards,
Peter