Shared Library Issue HP UX Post: 302342065

Sponsored Content

Operating Systems HP-UX Shared Library Issue HP UX Post 302342065 by sambarusty on Friday 7th of August 2009 10:22:04 AM

08-07-2009

Registered User

Shared Library Issue HP UX

I have never seen this issue before, but here is what is happening. I link an executable against two dynamic mlib libraries veclib and lapack. We place a newer version of these libraries in a write only directory and point the shlib_path at that directory. When the executable runs, it gets a page I/O modification error. The odd thing is we tracked it down to the executable modifying the two shared libraries. If the directory is writable the executable succeeds and the modification times on the shared libraries change. I don't have any idea why an executable would do anything to change a shared library at runtime or fail when it can't. Does anyone have any idea why this would occur. Is it that it is not the same library linked against. I didn't think this mattered for shared libraries as long as the calling convention is the same. So I am looking to try and figure out what weird behind the scenes thing is going on here. Thanks for any insight.

sambarusty

View Public Profile for sambarusty

Find all posts by sambarusty

10 More Discussions You Might Find Interesting

1. Programming

Shared Library

hello all I want to work in shared libraries how can i work in Linux Environment ?

2. UNIX for Advanced & Expert Users

shared library

What is the primary difference between static library and dynamic library? and how to write static shared library?

3. Programming

Shared memory in shared library

I need to create a shared library to access an in memory DB. The DB is not huge, but big enough to make it cumbersome to carry around in every single process using the shared library. Luckily, it is pretty static information, so I don't need to worry much about synchronizing the data between...

4. Programming

Using funcion in a shared library

Is there any way in C to access a function in C shared library. I have used dlopen to access /load the c shared library but unable to use the function in the shared object. Thanks in advance :b:

5. Programming

Shared memory for shared library

I am writing a shared library in Linux (but compatible with other UNIXes) and I want to allow multiple instances to share a piece of memory -- 1 byte is enough. What's the "best" way to do this? I want to optimize for speed and portability. Obviously, I'll have to worry about mutual exclusion.

6. Shell Programming and Scripting

How to change a Makefile from building static library to shared library?

Hi: I have a library that it only offers Makefile for building static library. It built libxxx.a file. How do I in any way build a shared library? (either changin the Makefile or direct script or command to build shared library) Thanks.

7. UNIX for Dummies Questions & Answers

Overhead of using a shared library

Hi, I found a very strange thing when I linked my executable with a shared library. That is the executable only references a small function of the shared library, and the size of this function is only hundred bytes, but when I check the /proc/pid/smaps, I found that the 'Rss' of this shared...

8. OS X (Apple)

Linking to a shared library

I'm trying to get Valgrind to work with an openmpi application in OS X. However I want to hardcode the path to a shared library called libmpiwrap-amd64-darwin.so into my application so that it is available at runtime. In Linux this is relatively simple, I would just add the option...

9. Programming

Shared library with acces to shared memory.

Hello. I am new to this forum and I would like to ask for advice about low level POSIX programming. I have to implement a POSIX compliant C shared library. A file will have some variables and the shared library will have some functions which need those variables. There is one special...

10. AIX

Add shared members from library to same library in a different directory

I'm trying to install libiconv to AIX 7.1 from an rpm off of the perzl site. The rpm appears to install but I get this error message. add shr4.o shared members from /usr/lib/libiconv.a to /opt/freeware/lib/libiconv.a add shr.o shared members from /usr/lib/libiconv.a to ...

LEARN ABOUT DEBIAN

ncurses5-config

ncurses5-config(1)					      General Commands Manual						ncurses5-config(1)

NAME

       ncurses5-config - helper script for ncurses libraries

SYNOPSIS

       ncurses5-config [options]

DESCRIPTION

       This is a shell script which simplifies configuring applications against a particular set of ncurses libraries.

OPTIONS

       --prefix
	      echos the package-prefix of ncurses

       --exec-prefix
	      echos the executable-prefix of ncurses

       --cflags
	      echos the C compiler flags needed to compile with ncurses

       --libs echos the libraries needed to link with ncurses

       --version
	      echos the release+patchdate version of ncurses

       --abi-version
	      echos the ABI version of ncurses

       --mouse-version
	      echos the mouse-interface version of ncurses

       --bindir
	      echos the directory containing ncurses programs

       --datadir
	      echos the directory containing ncurses data

       --includedir
	      echos the directory containing ncurses header files

       --libdir
	      echos the directory containing ncurses libraries

       --mandir
	      echos the directory containing ncurses manpages

       --terminfo
	      echos the $TERMINFO terminfo database path, e.g.,
	      /etc/terminfo

       --terminfo-dirs
	      echos the $TERMINFO_DIRS directory list, e.g.,
	      /etc/terminfo:/lib/terminfo:/usr/share/terminfo

       --termpath
	      echos the $TERMPATH termcap list, if support for termcap is configured.

       --help prints this message

SEE ALSO

       ncurses(3NCURSES)

       This describes ncurses version 5.9 (patch 20110404).

																ncurses5-config(1)

10 More Discussions You Might Find Interesting

1. Programming

Shared Library

Discussion started by: rajashekaran

2. UNIX for Advanced & Expert Users

shared library

Discussion started by: areef4u

3. Programming

Shared memory in shared library

Discussion started by: DreamWarrior

4. Programming

Using funcion in a shared library

Discussion started by: yhacks