Re: [ptxdist] [PATCH] doc: add section about install_replace

[Michael Olbrich <m.olbrich@pengutronix.de>]

On Wed, Dec 21, 2016 at 01:41:43PM +0100, Alexander Dahl wrote:
> This describes the install_replace macro. Some text stolen from
> rules/post/install.make and the existing documentation of install_lib.

Thanks, applied with some minor clarification.

Michael

> Signed-off-by: Alexander Dahl <post@lespocky.de>
> ---
>  doc/ref_manual.rst | 37 +++++++++++++++++++++++++++++++++++++
>  1 file changed, 37 insertions(+)
> 
> diff --git a/doc/ref_manual.rst b/doc/ref_manual.rst
> index d10f477..0647065 100644
> --- a/doc/ref_manual.rst
> +++ b/doc/ref_manual.rst
> @@ -873,6 +873,43 @@ Note: The package's install stage must be 'DESTDIR' aware to be able to make
>  it install its content into the corresponding packages directory (in our example
>  ``<platform-dir>/packages/foo-1.0.0/`` here).
>  
> +install_replace
> +~~~~~~~~~~~~~~~
> +
> +Usage:
> +
> +.. code-block:: make
> +
> + $(call install_replace, <package>, <filename>, <placeholder>, <value>)
> +
> +Replace placeholder with value in a previously installed file.
> +
> +The parameters and their meanings:
> +
> +**<package>**
> +  Name of the IPKG/OPKG the macro should work on
> +**<filename>**
> +  Absolute filepath in target root filesystem
> +**<placeholder>**
> +  A string in the file which should be replaced. Usually some uppercase word
> +  surrounded by @ signs
> +**<value>**
> +  The value which should appear in the root filesystem instead of the
> +  placeholder, could be some PTXCONF variable
> +
> +The ``install_replace`` macro can be used in targetinstall stage to adapt some
> +template and replace strings with content from menu variables or other
> +sources. For example look at the timezone you set in the ptxdist menu. An
> +``install_replace`` call in ``rules/timezone.make`` replaces the string
> +``@TIMEZONE@`` in the file ``/etc/timezone`` in ``projectroot`` with the
> +content of the menu variable ``PTXCONF_TIMEZONE_LOCALTIME``. A typical call
> +would look like this:
> +
> +.. code-block:: make
> +
> + @$(call install_replace, timezone, /etc/timezone, @TIMEZONE@, \
> +        $(PTXCONF_TIMEZONE_LOCALTIME))
> +
>  
>  .. _param_macros:
>  
> -- 
> 2.1.4
> 
> 
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> ptxdist@pengutronix.de

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