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Re: [patch] Fix "make check" failure to build on Ubuntu 14.04 LTS
- From: Paul Pluzhnikov <ppluzhnikov at google dot com>
- To: Adhemerval Zanella <adhemerval dot zanella at linaro dot org>
- Cc: GLIBC Devel <libc-alpha at sourceware dot org>
- Date: Mon, 18 Jan 2016 13:41:21 -0800
- Subject: Re: [patch] Fix "make check" failure to build on Ubuntu 14.04 LTS
- Authentication-results: sourceware.org; auth=none
- References: <CALoOobPf=6Lc=1=ZTRK3SuRnfhQw1HChGg96MF_yWx=_iB7zLw at mail dot gmail dot com> <569D5563 dot 6030800 at linaro dot org> <CALoOobPjwsxzrek0hhF90B3V8YMikYnBSBXTu8TcsunOCKPZAQ at mail dot gmail dot com>
On Mon, Jan 18, 2016 at 1:24 PM, Paul Pluzhnikov <ppluzhnikov@google.com> wrote:
> On Mon, Jan 18, 2016 at 1:13 PM, Adhemerval Zanella
> <adhemerval.zanella@linaro.org> wrote:
>
>> Is this tied to an specific make/binutils/gcc version that only shows itself
>> on Ubuntu 14.04?
>
> That seems likely
I looked some more. What's happening is that this gcc driver adds
'--as-needed' at the beginning of the link command line. With that
--as-needed there, the problem reproduces with current trunk binutils
(and probably any other version of binutils).
You should be able to reproduce this as well with:
gcc -Wl,--as-needed ./foo.so t.c
P.S. To be clear, I don't care if this patch goes in after the hard
freeze is lifted, though it's trivially correct and may help anyone
with similarly configured GCC.
--
Paul Pluzhnikov