Date: Thu, 31 May 2007 03:27:23 +0300 From: Giorgos Keramidas <keramida@ceid.upatras.gr> To: Alexander Kabaev <kabaev@gmail.com> Cc: freebsd-current@freebsd.org Subject: Re: ldd broken for profiling binaries? Message-ID: <20070531002722.GA3985@kobe.laptop> In-Reply-To: <20070528185318.1154742e@kan.dnsalias.net> References: <20070528181856.GA81757@kobe.laptop> <20070528185318.1154742e@kan.dnsalias.net>
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On 2007-05-28 18:53, Alexander Kabaev <kabaev@gmail.com> wrote:
> On Mon, 28 May 2007 21:18:57 +0300
> Giorgos Keramidas <keramida@freebsd.org> wrote:
> > ldd seems to be broken for profiling binaries, and the profiling
> > binaries built with gcc42 seem to be unusable here:
> > [...]
> > | cc -pg -o foo foo.o
> > | $ ./foo
> > | /libexec/ld-elf.so.1: ./foo: Unexpected inconsistency: dependency
> > libgcc_s.so.1 not found | $ ldd foo
> > | foo:
> > | /libexec/ld-elf.so.1: foo: Unexpected inconsistency: dependency
> > libgcc_s.so.1 not found | foo: exit status 1
> > | $
> > `-----------------------------------------------------------------------
>
> linker pulled in libgcc_s.so.1 symbols, but somehow managed not to
> record dependency on lib. This might be a bug in binutils, but someone
> needs to look close to be sure.
>
> I think I'll disable shared libgcc for profiled builds for now.
Thanks. It seems to work for now :)
$ file foo
foo: ELF 32-bit LSB executable, Intel 80386, version 1 (FreeBSD), statically linked, not stripped
$ gprof foo foo.gmon
[...]
called/total parents
index %time self descendents called+self name index
called/total children
0.06 9.68 1/1 _start [2]
[1] 100.0 0.06 9.68 1 main [1]
0.00 8.80 1000000/1000000 bar [8]
0.00 0.88 100000/100000 foo [9]
:-)
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