Date: Mon, 28 May 2007 18:53:18 -0400 From: Alexander Kabaev <kabaev@gmail.com> To: Giorgos Keramidas <keramida@freebsd.org> Cc: freebsd-current@freebsd.org Subject: Re: ldd broken for profiling binaries? Message-ID: <20070528185318.1154742e@kan.dnsalias.net> In-Reply-To: <20070528181856.GA81757@kobe.laptop> References: <20070528181856.GA81757@kobe.laptop>
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--Sig__j27mJv7PDKZuGYtVBvNu0N Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable 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: >=20 > ,----------------------------------------------------------------------- > | $ cat -n foo.c > | 1 #include <stdio.h> > | 2 =20 > | 3 int > | 4 main(void) > | 5 { > | 6 int k; > | 7 =20 > | 8 for (k =3D 0; k < 10000; k++) > | 9 printf("Hello world\n"); > | 10 return 0; > | 11 } > | $ DEBUG_FLAGS=3D'-pg' ; CFLAGS=3D'' ; export DEBUG_FLAGS CFLAGS > | $ make cleandir > | rm -f foo foo.o > | rm -f .depend GPATH GRTAGS GSYMS GTAGS > | $ make cleandir > | rm -f foo foo.o > | rm -f .depend GPATH GRTAGS GSYMS GTAGS > | $ make > | Warning: Object directory not changed from original /tmp/foo > | cc -pg -c foo.c > | 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 > | $ > `----------------------------------------------------------------------- >=20 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. --=20 Alexander Kabaev --Sig__j27mJv7PDKZuGYtVBvNu0N Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) iD8DBQFGW11eQ6z1jMm+XZYRApjqAKCKgt1Wbjv6VtZzeUk1Ir9jALui5QCfSQlV G0RXVTILl9YVDJyKBqv/iCQ= =B4mv -----END PGP SIGNATURE----- --Sig__j27mJv7PDKZuGYtVBvNu0N--
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