[RFC PATCH u-boot 00/12] U-Boot LTO (Sandbox + ARM Nokia RX-51)

[Marek Behun]

On Sat, 6 Mar 2021 22:00:45 +0100
Pali Rohár <pali at kernel.org> wrote:

> On Saturday 06 March 2021 21:54:00 Marek Behun wrote:
> > On Sat, 6 Mar 2021 21:41:14 +0100
> > Pali Rohár <pali at kernel.org> wrote:
> >   
> > > On Saturday 06 March 2021 15:08:13 Tom Rini wrote:  
> > > > Perhaps we'll default to yes on some SoCs.  The omap3 thing is a bit
> > > > odd, but we'll see what happens on real N900 hardware.    
> > > 
> > > Hello!
> > > 
> > > Could you send me a link to git repo / branch and tell me from which
> > > commit should I do tests on real N900 hardware? I will test it and let
> > > you know results.
> > > 
> > > Adding maemo ML to the loop as on the maemo list are more people with
> > > N900 HW and U-Boot.  
> > 
> > https://github.com/elkablo/u-boot branch lto  
> 
> Sorry, compilation is failing :-(
> 
> $ git clone https://github.com/elkablo/u-boot -b lto --depth=100
> Cloning into 'u-boot'...
> remote: Enumerating objects: 33644, done.
> remote: Counting objects: 100% (33644/33644), done.
> remote: Compressing objects: 100% (20116/20116), done.
> remote: Total 33644 (delta 15838), reused 19947 (delta 13018), pack-reused 0
> Receiving objects: 100% (33644/33644), 26.28 MiB | 10.21 MiB/s, done.
> Resolving deltas: 100% (15838/15838), done.
> 
> $ cd u-boot
> 
> $ make CROSS_COMPILE=arm-linux-gnueabi- nokia_rx51_config
>   HOSTCC  scripts/basic/fixdep
>   HOSTCC  scripts/kconfig/conf.o
>   YACC    scripts/kconfig/zconf.tab.c
>   LEX     scripts/kconfig/zconf.lex.c
>   HOSTCC  scripts/kconfig/zconf.tab.o
>   HOSTLD  scripts/kconfig/conf
> #
> # configuration written to .config
> #
> 
> $ make CROSS_COMPILE=arm-linux-gnueabi- u-boot.bin
> ...
>   LTO     u-boot
> /usr/lib/gcc-cross/arm-linux-gnueabi/8/../../../../arm-linux-gnueabi/bin/ld: /usr/lib/gcc-cross/arm-linux-gnueabi/8/../../../../arm-linux-gnueabi/bin/ld: DWARF error: offset (1258291444) greater than or equal to .debug_str size (676)
> /usr/lib/gcc-cross/arm-linux-gnueabi/8/../../../../arm-linux-gnueabi/bin/ld: DWARF error: offset (1459618036) greater than or equal to .debug_str size (676)
> /usr/lib/gcc-cross/arm-linux-gnueabi/8/../../../../arm-linux-gnueabi/bin/ld: DWARF error: could not find abbrev number 48028
> /tmp/cc8l0QSQ.ltrans3.ltrans.o: in function `omap3_set_aux_cr_secure':
> <artificial>:(.text+0x6eb8): undefined reference to `do_omap3_emu_romcode_call'
> collect2: error: ld returned 1 exit status
> make: *** [Makefile:1808: u-boot] Error 1
> 
> 
> I'm using arm-linux-gnueabi-gcc version 8.3.0 which is available in
> current Debian stable (Debian 10 Buster).

Fixed and force-pushed, it seems ar needs the P flag that Bin Meng
questioned.