Unix and Linux Stack Exchange
Unix and Linux Stack Exchange

Questions tagged [ld]

These questions are about ld: a dynamic linker/loader which combines object files, archive files and shared libraries before the final compilation of a program.

108 questions
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Getting "Not found" message when running a 32-bit binary on a 64-bit system

I have currently a strange problem on debian (wheezy/amd64). I have created a chroot to install a server (i can't give any more detail about it, sorry). Let's call its path /chr_path/. To make things easy, I have initialized this chroot with a…
Elenaher
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4 answers

Find out if library is in path

Assuming I want to test if a library is installed and usable by a program. I can use ldconfig -p | grep mylib to find out if it's installed on the system. but what if the library is only known via setting LD_LIBRARY_PATH? In that case, the program…
nbubis
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ldd does not find path, How to add

I know this question isn't very new but it seems as if I didn't be able to fix my problem on myself. ldd generate the following output u123@PC-Ubuntu:~$ ldd /home/u123/Programme/TestPr/Debug/TestPr linux-vdso.so.1 => (0x00007ffcb6d99000) …
C-Jay
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1 answer

Is it normal that LD_LIBRARY_PATH variable is missing from an environment?

I have found by coincidence that on my Debian Jessie there is no LD_LIBRARY_PATH variable (to be exact printenv | grep LD shows nothing related to linker and echo "$LD_LIBRARY_PATH" shows also nothing). This is the case in x terminal emulator (which…
calavera.info
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1 answer

Why don't Unix/Linux systems traverse through directories until they find the required version of a linked library?

I have a binary executable named "alpha" that requires a linked library (libz.so.1.2.7) which is placed at /home/username/myproduct/lib/libz.so.1.2.7 I export the same to my terminal instance before spawning my binary executable by executing the…
daedalus_hamlet
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1 answer

What is the default value of LD_LIBRARY_PATH?

In my case, it seems as if LD_LIBRARY_PATH is set to the empty string. But all standard system tools still work fine, so I guess the dynamic linker checks for that case and uses some default for LD_LIBRARY_PATH in that case. What is that default…
Albert
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1 answer

Where to get "/etc/ld.so.nohwcap" file from?

When I run a command through strace utility I can see access errors such as access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) Now I've read somewhere that what's happening on the above line is that a linker is looking…
Shady Programmer
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Difference between 'ld' and 'ld.so'?

While both are called "linker" and are used to link binaries, I can't really figure out how they differ from each other. Can anyone tell me their differences?
iBug
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11
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3 answers

Making a process read a different file for the same filename

I have an application that reads a file. Let's call it processname and the file ~/.configuration. When processname runs it always reads ~/.configuration and can't be configured differently. There are also other applications that rely on…
Alexander
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10
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2 answers

What is the difference between "LSB executable" (ET_EXEC) and "LSB shared object" (ET_DYN)?

With two files, one compiled and linked with gcc and the other manually with nasm and ld I get ELF 32-bit LSB shared object ... ELF 32-bit LSB executable ... What's the difference between these two things? I can see with readelf -h that one is…
Evan Carroll
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How can I find out what linker flags are needed to use a given C library function?

Running example C code is a painful exercise unless it comes with a makefile. I often find myself with a C file containing code that supposedly does something very cool, but for which a first basic attempt at compilation (gcc main.c) fails…
Anko - inactive in protest
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4 answers

Overwriting a running executable or .so

I have a question about overwriting a running executable, or overwriting a shared library (.so) file that's in use by one or more running programs. Back in the day, for the obvious reasons, overwriting a running executable didn't work. There's even…
Steve Summit
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LD_PRELOAD for setuid binary

I'm trying to override malloc/free functions for the program, that requires setuid/setgid permissions. I use the LD_PRELOAD variable for this purpose. According to the ld documentation, I need to put my library into one of the standard search…
zlatonick
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1 answer

Fedora 27 /usr/bin/ld: cannot find -lstdc++

I have Fedora 27. I am building something from source. (It is https://github.com/xmrig/xmrig-nvidia if that matters). Make gets to linking and then fails with this message: /usr/bin/ld: cannot find -lstdc++ collect2: error: ld returned 1 exit…
Mikhail Ramendik
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2 answers

Is it OK to sort /etc/ld.so.conf

I am wondering if I can keep the entries in /etc/ld.so.conf sorted. My ld.so.conf looks now like…
Peter VARGA
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