[Fontconfig] Pregenerate fontconfig cache

[Guillermo Rodriguez Garcia]

Hello,

Thank you for the info.

Is there any way to tell fontconfig not to check the mtime of font directories?
Since I have full control over fonts installed in the device, and I
would be pregenerating the cache file, I would be happy to tell
fontconfig to just use the cache file without any further checks.

Other than that, is there a recommended procedure for this?
(pregenerating cache files)

Thank you,

Guillermo

2016-08-17 4:21 GMT+02:00 Akira TAGOH <akira at tagoh.org>:
> Fontconnfig is checking the mtime of the directories fonts installed
> to detect the changes. that message means the mtime of
> /usr/share/fonts/X11 is different where the caches originally
> generated.
>
> On Tue, Aug 16, 2016 at 9:13 PM, Guillermo Rodriguez Garcia
> <guille.rodriguez at gmail.com> wrote:
>> Hi all,
>>
>> I have an embedded system where the list of fonts is known in advance
>> and cannot change. I want to pregenerate the fontconfig cache files
>> for an embedded system in order to avoid long startup times on first
>> boot.
>>
>> I already learned that the cache files are architecture specific so
>> they need to be generated either on the target hardware or using qemu
>> or similar. What I am doing right now is:
>>
>> - Install fonts on target system
>> - Generate cache files (fc-cache -f)
>> - Get generated cache files and add them to the build system
>> - Generate a rootfs image containing the original font files and the
>> cache files. This is the rootfs image that will be installed on the
>> target devices.
>>
>> However when I install this rootfs image to the target system, on
>> first boot the pregenerated cache files are ignored, and the cache
>> files are regenerated again from scratch.
>>
>> Setting FC_DEBUG=16 I see this:
>>
>> $ fc-list
>> FC_DEBUG=16
>> FcCacheTimeValid dir "/usr/share/fonts/X11" cache checksum 1167623491
>> dir checksum 1167628683
>>
>> Why are the checksums different? Is there a way to avoid this?
>>
>> Thank you,
>>
>> Guillermo Rodriguez Garcia
>> guille.rodriguez at gmail.com
>> _______________________________________________
>> Fontconfig mailing list
>> Fontconfig at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/fontconfig
>
>
>
> --
> Akira TAGOH



-- 
Guillermo Rodriguez Garcia
guille.rodriguez at gmail.com