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Questions tagged [linker]

The tag has no usage guidance.

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0answers
18 views

GNU Linker Colorization

Compiling code with GCC or Clang can result in some colorful error outputs. Linking code, however, doesn't enjoy the same luxury. It seems like the GNU Linker doesn't support colorized error output ...
3
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3answers
122 views

Embedding binary data into an executable using LLVM tools

In the past I have embedded resource files (images) into programs by first converting them to .o files using the GNU linker. For example: ld -r -b binary -o file.o file.svg Starting with FreeBSD 12, ...
4
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1answer
62 views

Placed library in /usr/lib, but ldconfig doesn't put it in cache

I'm starting a project that requires an external shared library third-party.so. I've placed it in /usr/lib. However, when I run sudo ldconfig -v, it's not listed. ldconfig -p | grep third-party.so ...
-5
votes
2answers
155 views

BUG in clang linker - name resolving issue

I found bug in clang, and i post it here because it's very difficult to find how to do it in clang system. I think this information in useful - i saw similar questions in web. So, clang makes wrong ...
-1
votes
1answer
115 views

what are the executable ELF files respectively for static linker, dynamic linker, loader and dynamic loader?

In Linux, what are the executable ELF files respectively for static linker dynamic linker loader dynamic loader? Which of them are invoked by execve() by dlopen()? How are they invoked by execve(...
0
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1answer
594 views

GNU Linker differences between the different 32bit emulation modes?

What is the difference between the 386 and 32 bit options in ld -V? elf32_x86_64 elf_i386 i386linux i386pep i386pe And, where can I find the documentation on these "emulation modes"
1
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1answer
182 views

Manually linking shared object files

I've been diving into dependency hell on an embedded Yocto Linux project recently in an attempt to compile and install a large project. I frequently run into an error while installing the dependencies ...
0
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2answers
470 views

Creating a link to a shared library

I have a library ( ZendDebugger.so ) which in turn requires the openssl library but it doesn't find a reference to it. Indeed when ZendDebugger.so loads, it prints this error on the error log ( which ...
1
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1answer
447 views

Difference between the linker flags

I'm adding c++ runtime and exception support to the Linux kernel. For that, I need to provide my own lib/gcc and lib/libstdc++instead of the standard libraries provided by the compiler. So, I am ...
1
vote
1answer
318 views

Is ld.so an executable?

$ file /lib/ld-linux.so.2 /lib/ld-linux.so.2: symbolic link to i386-linux-gnu/ld-2.27.so $ readlink -f /lib/ld-linux.so.2 /lib/i386-linux-gnu/ld-2.27.so $ file /lib/i386-linux-gnu/ld-2.27.so /lib/i386-...
2
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1answer
276 views

De-prioritize ld.conf.so.d library path resolution

From a separate question, and other articles on the subject, it appears that additional library paths defined by ld.so.conf.d will always be resolved (i.e. in the case of a name clash, such as when ...
0
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1answer
2k views

Compile Git to use OpenSSL library libssl.so.1.0.1

Running a system that only has full support for OpenSSL version 0.9.8. Installed in parallel is OpenSSL 1.0.1 libraries (Supported by Distro) Git still preferentially uses the 0.9.8 libraries but we ...
1
vote
1answer
87 views

What is the difference between the runtime linker (ld.so) and the prelink program?

What is the difference between the runtime linker (ld.so) and the prelink program? I know the runtime linker (ld.so) loads all the dynamic libraries needed for a program but what is the benefit of ...
0
votes
1answer
1k views

Symbol table in the .data section of ELF

I'm trying to understand how does symbol tables relate to the .data section in ELF. First some assumptions that I'm using as ground to start with. A symbol is a human readable (or "as written in ...
2
votes
1answer
644 views

undefined reference, even when the linked library does exist

I'm trying to compile VTK from source and I received the following error. I'm running Fedora 27, kernel version 4.14.11-300.fc27.x86_64 /usr/lib64/libSM.so: undefined reference to `uuid_generate@...
0
votes
1answer
74 views

Determine when the platform offers LD_LIBRARY_PATH?

I want to detect when the platform offers LD_LIBRARY_PATH to load libraries from an arbitrary location. The application is a lightweight shell script, so I am looking for a method that does not ...
5
votes
1answer
781 views

Linker script in .so file? (libc.so) Is that right?

I am currently trying to get python to run on my NAS which is a Zyxel NSA325. I did manage to get python 2.7 and pip running and I was able to successfully install the watchdog module with pip. I ...
0
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1answer
166 views

How to link libraries without root permissions

I am trying to compile OpenMPI without root permissions on my local account in a cluster, but I have the following error. /usr/bin/ld: cannot find -libcm /usr/bin/ld: cannot find -lnuma /usr/bin/ld: ...
2
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0answers
393 views

libtool: error: relink 'libpocketsphinx.la' with the above command before installing it

When I trying to install pocketsphinx by make install command(after ./autogen.sh , ./configure, make commands) , I get this error message: libtool: error: relink 'libpocketsphinx.la' with the above ...
1
vote
2answers
579 views

Extracting the size and origin of all symbols in an ELF

I am trying to estimate the code size of a binary's various components. I have access to the source code and resulting build directory containing all built object files. Of course, I want to include ...
1
vote
2answers
595 views

What do compile and link line refer to?

While installing the cudnn library, I came across this in the INSTALL.txt file: Add [installpath] to your build and link process by adding -I[installpath] to your compile line and -L[...
2
votes
1answer
297 views

GNU linker producing useless spacing between sections in ELF file

My intent is to place the text section at a specific location in memory (0x00100000). SECTIONS { . = 0x00100000; .text : { *(.text*) } } Although the linker does do ...
2
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0answers
289 views

cannot find -lm linker error

This question is highly related to cannot find -lm, but the error appears when I'm invoking cross G++ Linker. I'm trying to follow through the documentation provided by Using Eclipse with ARTIK SDK. ...
8
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1answer
2k views

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?
1
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1answer
6k views

How to link OpenSSL library in macOS using gcc?

I have OpenSSL installed through the Homebrew package manager. I have found the library and header files I need. The headers are: /usr/local/Cellar/openssl/1.0.2h_1/include/openssl /usr/local/...
1
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1answer
947 views

How to get the REAL gcc (not the one that is hashed to clang) in MacOS?

I am trying to compile a program that uses the OpenSSL library. I had a problem where it couldn't find the header files. I fixed this problem by adding the option -I /usr/local/opt/openssl/include ...
1
vote
1answer
46 views

How strong is the promise that .so.x.y.z will exist?

I have an application that requires OpenCV 2.4.11 to link, so in my make file I ensure I use the following linker flag pattern: -l:libopencv_core.so.2.4.11 How robust is this assumption? My ...
1
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1answer
594 views

Unable to compile vapoursynth: failed to link zimg [closed]

I'm trying to compile vapoursynth and have run into a linker issue which I don't understand how to solve. Here is what I have so far: I have compiled zimg from github github: buaazp/zimg and have ...
0
votes
1answer
1k views

Force linker to find stdc++ library in non-standard directory

I've read a lot of guidance that says the LD_LIBRARY_PATH is searched before anything else, but one of my .so libraries is linking with libtdc++.so.6 in /usr/lib64. ldd mylib.so: ... libstdc++.so.6 =&...
0
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0answers
804 views

Where are the definitions for the prototype declarations in <bsd/stdlib.h>?

I have a C program on Ubuntu 16.04, in which I would like to use arc4random_uniform. typedef unsigned char u_char; #include <bsd/stdlib.h> int main () { return (int) arc4random_uniform(100); } ...
4
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1answer
13k views

How to change the paths to shared libraries (.so files) for a single terminal instance

I want to remove some of the paths the linker uses to find .so libraries for testing purposes. I have found a way to add library paths: export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/path/to/library" ...
0
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0answers
72 views

Compiling: Scons can't find libav

The compiler errors I keep getting are: error: ‘CODEC_ID_HUFFYUV’ undeclared (first use in this function) if (!codec) codec = avcodec_find_encoder(CODEC_ID_HUFFYUV); ...
1
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2answers
134 views

Linker error about -laudio

I'm trying to make rcssmonitor and I get the following error: /usr/bin/ld: cannot find -laudio I'm using Linux Mint 17.2. with gcc 4.8.4.
4
votes
1answer
2k views

How to deal with conflicting names of two shared libraries?

On my Linux Mint 17.3 system, I installed the packages libglfw2 and libglfw-dev. Since GLFW v3 is not available in repositories, I chose to compile it manually using instructions here. Almost all ...
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0answers
53 views

What is the background of the program segmentation?

Each program is separated into several segments like: code segment data segment stack segment heap segment But who was responsible for that progression? The compiler and linker has to support that ...
0
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0answers
156 views

How to pass to gcc “-lregex”?

I want to compile a program,bacula under hpux but give me an error about "unsatisfied symbol" i think probably passing the correct lib "-lregex" will solve the problem. But i don't know how to pass to ...
1
vote
1answer
961 views

dynamic linker/loader libs - missing ld.so

Following manual describes dynamic linker/loader libs: The program ld.so handles a.out binaries, a format used long ago; ld-linux.so* handles ELF (/lib/ld-linux.so.1 for libc5, /lib/ld-linux.so.2 ...
2
votes
2answers
1k views

What are the alternatives to GNU ld?

I was curious if it's possible to build Linux kernel without GNU toolchain (gcc+autotools). I found out that it is possible: after applying patches from llvm.linuxfoundation.org, it was possible to ...
0
votes
1answer
262 views

Compiling package for debian 8 - linking issues

I'm trying to recompile my software for debian 8, but i have run into this strange issue of libgssappi refusing to link with anything. >~/torque_github$ gcc test.c -lgssapi /usr/bin/ld: cannot ...
2
votes
2answers
1k views

Specifying local libc does call global libc?

If I run the command foo specifying a a different libc to use as follows: LD_LIBRARY_PATH=$PATH_TO_MY_CUSTOM_LIBC foo Is the globally defined libc used to run any of the command given above? For ...
0
votes
1answer
2k views

Link libraries when compiling g++

I am trying to link some libraries my g++ code and I am getting the following error: $ g++ -O myprob.o -o myprob -Wl,-rpath $PATH/lib -L$PATH/lib -lprob7_cpp -lprob7 g++.exe: error: c:\mypath;c:\...
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0answers
162 views

Weird G++/AR Compilation issue

I'm working a patch-set to compile dpkg and APT onto Cygwin. I've almost got everything working, but I'm encountering some weird behavior with ar/g++ that I can't explain. APT's stock Makefile uses ...
5
votes
2answers
698 views

Is there a way to check whether a .so has been compiled with -Bsymbolic-functions flag?

My application loads custom code using dlopen on the fly. For common symbols, the global symbol table is used by default. However, I want to provide the functionality where - if the user has linked ...
1
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1answer
394 views

Compiling sources with a non-default compiler

I need to implement an authentication scheme on an embedded device and require gmp in order to perform large integer operations. After downloading the sources they must be compiled with a proprietary ...
2
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1answer
411 views

Using `ldconfig` while not touching system files

I have compiled a library and now I should run ldconfig. However, I would rather not modify /etc/ld.so.conf, nor any other system file. Is it possible to generate the cache somewhere else and then ...
7
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1answer
1k views

Unable to run an executable built with NASM

I am attempting to assemble the assembly source file below using the following NASM command: nasm -f elf -o test.o test.asm This completes without errors and I then try to link an executable with ld:...
0
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1answer
444 views

GCC “__gmpn_invert_limb” compilation error

I'm currently trying to compile GCC 4.9.2 using GCC 4.2. The problem I have run into is that I have a working GMP installation (6.0.0a) but GCC fails to link to it after a while. The error I get is: ...
0
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2answers
5k views

Loading and execution of programs in memory [closed]

While comparing between linking loader and linkage editor I came across a point that in case of linking loader linking and relocation takes place for each execution of the program( and happens at time ...
3
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3answers
4k views

what's the name of ubuntu package contains llvm linker lld

Would like to try this lld from LLVM. The doc on apt could be found here, but I don't know which package contains the lld executable. It seems the purpose of lld is to remove the system dependency, ...
4
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2answers
262 views

Is there any relationship between linking binaries and symbolic links?

Is there any relationship between the linking of binaries (as in dynamic or static linking) and symbolic links. Do they interact in any way, or share some history, or are these two completely ...