Hi,
I think it's a problem with the linkspec. I tried to fix it and it seems to
work. Can you please have a look at my fix?
https://github.com/HelenOS/gcc/pull/1
It seems to work, but I have only a very vague idea of what the linkspec
does.
Thanks,
Jiri
---------- Původní e-mail ----------
Od: Jiří Zárevúcky <[email protected]>
Komu: HelenOS development mailing list <[email protected]>
Datum: 15. 1. 2019 15:52:44
Předmět: Re: Problem with linking libc.so.0.0 on ppc32
"Weird.
I'm currently in the middle of some PC maintenance (scrubbing
everything and installing a clean system),
but I'll try to look into it as soon as possible.
-- jzr
On Tue, 15 Jan 2019 at 11:09, Jiri Svoboda <[email protected]> wrote:
>
> Hi Jzr,
>
> while working on dynamic linking support for ppc32, I soon ran into a
problem with linking libc.so.0.0 that I am scratching my head about:
>
> /usr/local/cross/bin/ppc-helenos-gcc -D__BE__ -nostdlib -mcpu=powerpc -
mhard-float -m32 -std=gnu11 -isystem ../../lib/c/include -isystem ../../lib/
c/arch/ppc32/include -isystem ../../../abi/arch/ppc32/include -isystem ../..
/../abi/include -Iinclude -I. -imacros ../../../config.h -D_HELENOS_SOURCE -
fexec-charset=UTF-8 -finput-charset=UTF-8 -fno-common -fdebug-prefix-map=/
data/helenos/dev/dlppc32=. -O3 -ffunction-sections -fno-builtin-strftime -
pipe -Wall -Wextra -Wno-unused-parameter -Wmissing-prototypes -Wwrite-
strings -Werror-implicit-function-declaration -Wsystem-headers -Wunknown-
pragmas -Werror -Wno-nonnull-compare -Wno-clobbered -Wl,--fatal-warnings,--
warn-common -Wl,--gc-sections -shared -Wl,-soname,libc.so.0 -Wl,--no-
undefined,--no-allow-shlib-undefined -Wl,-Map,libc.so.0.0.map -o libc.so.0.0
-Wl,--whole-archive libc.la -Wl,--no-whole-archive -lgcc
> /usr/local/cross/lib/gcc/ppc-helenos/8.2.0/../../../../ppc-helenos/bin/ld:
warning: cannot find entry symbol _start; defaulting to 0000000001800074
> collect2: error: ld returned 1 exit status
> make: *** [../../Makefile.common:384: libc.so.0.0] Error 1
>
> It looks like it's trying to create an executable instead of a shared
library. I tried to tinker with the command-line arguments, e.g. adding -
fPIC in addition to -shared to the link stage, but with no success. Could
this be related to our custom ppc-helenos GCC target?
>
> If you'd like to try it out, please see my workspace:
> https://github.com/jxsvoboda/helenos
>
> Thanks,
> Jiri
>
"
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