LVGLs Kconfig in NuttX is used to define macros which are picked up in lv_conf.h. Indeed this is painful to maintain whenever a new LVGL version appears and changes lv_conf_template.h.
Including a child Kconfig is no problem. The issue is that in this case NuttX controls the build and not LVGL so I'm not sure how you would distribute LVGL assuming a higher level build system generating the .config and config.h. These two files are placed in nuttx root and include/nuttx respectively. The config.h is included in all source files in NuttX so if this include is made visible to LVGL itself this would complete integration (maybe allowing LVGL user to supply a header where we could just do "#include <nuttx/config.h>". If you can make LVGL optionally NOT generate its own config.h and .config we could indeed just include the Kconfig and Make.defs (as it is done now). Best, Matias On Wed, Aug 26, 2020, at 09:52, Gábor Kiss-Vámosi wrote: > Hi Matias, > I’ve checked the current LVGL KConfig in NuttX and it seems up to date but > some help messages are quite outdated. I think it’d be awesome to somehow use > LVGL’s Kconfig to be sure you always have the latest and official version. > I wonder if it’s possible to simply `rsource` LVGL’s KConfig here > <https://github.com/apache/incubator-nuttx-apps/blob/master/graphics/lvgl/Kconfig#L13>. > Where are the .config and config.h are created? If we can .gitignore them > from LVGL then I have no problem with it. > Regards, > Gabor > > > Matias N. <mat...@imap.cc> ezt írta (időpont: 2020. aug. 26., Sze, 14:20): >> __ >> Hi Alan and Gabor, >> >> I don't think that LVGL use of Kconfig should bother NuttX's since the build >> is always self contained in a directory. The positive side is that we could >> store a defconfig for LVGL on NuttX instead of the lv_conf.h that is now. >> Of course it would be cool if you could simply do "make menuconfig" on NuttX >> and have LVGL options appear there, but I believe that would couple LVGL and >> NuttX build systems which may not be the best idea. I'm not sure if that can >> be done cleanly (it would always produce one .config and config.h which both >> would have to read). >> >> Best, >> Matias >> >> On Tue, Aug 25, 2020, at 21:22, Alan Carvalho de Assis wrote: >>> Hi Everyone, >>> >>> Mr. Gábor Kiss-Vámosi contacted and told me that LVGL is moving to use >>> Kconfig: >>> >>> "At LVGL we are planning to add a Kconfig file to the main repo but we >>> are not sure if it will harm the existing Kconfig based projects. >>> >>> Could you comment on what your requirements are and what we should >>> consider in order to allow NuttX to use LVGL's Kcofig file or - if >>> it's not possible - to make sure it won't bother your Kconfig file?" >>> >>> So, I think this is a good opportunity to make NuttX more integrated >>> with LVGL. Suggestions are welcome. >>> >>> Gábor, I added you CC here because I don't know if you are subscribed >>> to NuttX at Apache Foundation mailing list. >>> >>> BR, >>> >>> Alan >>> >>
