[Buildroot] Analysis of build results for 2016-02-21
Romain Naour
romain.naour at gmail.com
Mon Feb 22 21:55:20 UTC 2016
Hi Olivier, All,
Le 22/02/2016 20:05, Olivier Schonken a écrit :
> Hi Thomas, All
>
>
> arm | cups-2.1.2 | NOK
> | http://autobuild.buildroot.net/results/07ccca8f80c56ab0ff48bfee876885b1c8c3916e/
> arc | cups-2.1.2 | NOK
> | http://autobuild.buildroot.net/results/b169b939e38cb761319a92d2871f4f59ddb5c4ac/
>
> Both error cases looks like it has to do with uclibc not behaving as expected at
> link time for the ippserver build (Both builds link statically with position
> independent execution also set). For the arm platform it can't find the Scrt1.o
> file, and for the ARC compiler, __init_array_end is undefined.
Thanks for the investigation!
I don't think it's related to uClibc library but static build only
(BR2_STATIC_LIBS=y).
>
> I haven't considered all the options yet, but two that come to mind are
> disabling cups support for uclibc type compilers, or else to disable the cups
> test-framework.
>
> The missing Scrt1.o has to do with the compiler. In the Configure step,
> autotools checks whether the compiler is capable of generating position
> independent executables.
>
> "checking whether compiler supports -fPIE... yes"
Can you try with LSB_BUILD=y in CUPS_CONF_OPTS ?
This allow to remove -fPIE -pie from CFLAGS.
Maybe something like:
# Remove -fPIE -pie from CFLAGS
ifeq ($(BR2_STATIC_LIBS),y)
CUPS_CONF_OPTS += LSB_BUILD=y
endif
Best regards,
Romain
>
> In the linking stage it then looks for Scrt1.o, which it can't find. This
> breaks the build.
>
> From http://dev.gentoo.org/~vapier/crt.txt
> crt1.o
> Newer style of the initial runtime code. Contains the _start symbol which
> sets up the env with argc/argv/libc _init/libc _fini before jumping to the
> libc main. glibc calls this file 'start.S'.
> Scrt1.o
> Used in place of crt1.o when generating PIEs.
>
> Regards
>
> Olivier Schonken
>
>
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