Bug 258090

Summary:	app-misc/pax-utils-0.1.19: scanelf -L -n reports different output than ldd
Product:	Gentoo Linux	Reporter:	Alexis Ballier <aballier>
Component:	Current packages	Assignee:	solar (RETIRED) <solar>
Status:	RESOLVED FIXED
Severity:	minor	CC:	vapier
Priority:	High
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description Alexis Ballier gentoo-dev

2009-02-08 09:53:26 UTC

Not sure if it's a bug or not, but the libstdc++.so stuff seems wrong like if ld.so.conf dirs were read from bottom to top instead of from top to bottom:

$ scanelf  -L -n  /usr/lib64/librubberband.so.2.0.0 
 TYPE   NEEDED FILE 
ET_DYN /usr/lib/libsamplerate.so.0,/usr/lib/libfftw3.so.3,/lib/libpthread.so.0,/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/libstdc++.so.6,/lib/libm.so.6,/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/libgcc_s.so.1,/lib/libc.so.6 /usr/lib64/librubberband.so.2.0.0 


$ ldd  /usr/lib64/librubberband.so.2.0.0 
	linux-vdso.so.1 =>  (0x00007fff1effd000)
	libsamplerate.so.0 => /usr/lib/libsamplerate.so.0 (0x00007fbe16a00000)
	libfftw3.so.3 => /usr/lib/libfftw3.so.3 (0x00007fbe1668e000)
	libpthread.so.0 => /lib/libpthread.so.0 (0x00007fbe16471000)
	libstdc++.so.6 => /usr/lib/gcc/x86_64-pc-linux-gnu/4.3.3/libstdc++.so.6 (0x00007fbe16165000)
	libm.so.6 => /lib/libm.so.6 (0x00007fbe15ee2000)
	libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00007fbe15cca000)
	libc.so.6 => /lib/libc.so.6 (0x00007fbe15975000)
	/lib64/ld-linux-x86-64.so.2 (0x00007fbe16fc7000)


$ cat /etc/ld.so.conf 
# ld.so.conf autogenerated by env-update; make all changes to
# contents of /etc/env.d directory
/usr/local/lib
//usr/lib32/opengl/xorg-x11/lib
//usr/lib64/opengl/xorg-x11/lib
/lib
/usr/lib
/lib64
/usr/lib64
/usr/local/lib64
/lib32
/usr/lib32
/usr/local/lib32
/usr/x86_64-pc-linux-gnu/lib
/usr/lib/gcc/x86_64-pc-linux-gnu/4.3.3
/usr/lib/gcc/x86_64-pc-linux-gnu/4.3.3/32
/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2
/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/32
/usr/lib64/nspr
/usr/lib64/nss
/usr/lib/qt4
/usr/lib64/qt4
/usr/lib32/qt4
/usr/kde/3.5/lib
/usr/kde/3.5/lib64
/usr/kde/3.5/lib32
/usr/qt/3/lib
/usr/qt/3/lib64
/usr/qt/3/lib32
/usr/lib64/postgresql-8.3/lib64
/opt/xulrunner
/usr/games/lib
/usr/games/lib64
/usr/games/lib32
/usr/lib64/fltk-1.1
/usr/lib32/libstdc++-v3/


scanelf -L -n tells its gcc 4.1's libstdc++ that is used while I have gcc 4.3 as default compiler.

Comment 1 SpanKY gentoo-dev

2009-02-08 17:17:27 UTC

it is a bug ... ld.so.conf should be processed from top to bottom, not the other way around

Comment 2 SpanKY gentoo-dev

2009-03-15 09:13:25 UTC

the ld.so.cache lookup function would return the last match rather than the first.  so i cleaned it up and changed it to return the first match.  should be faster too ;).

http://sources.gentoo.org/gentoo-projects/pax-utils/scanelf.c?r1=1.211&r2=1.212