[SOLVED] GCC multilib: cannot find shared library

kamz · 2014-08-04 02:11:37

Hi,

I'm trying to compile a systemc program to a 32-bit executable on arch x86_64. I'm using GCC multilib. Program compiles fine, but I get the following error when trying to run.

/home/[myusername]/workspace/systemc_test/Debug/systemc_test: error while loading shared libraries: libsystemc-2.3.1.so: cannot open shared object file: No such file or directory

Compiler:

g++ -std=c++0x -DSC_INCLUDE_DYNAMIC_PROCESSES -I/usr/local/systemc/include -O0 -g3 -Wall -c -fmessage-length=0 -m32 -MMD -MP -MF"main.d" -MT"main.d" -o "main.o" "../main.cpp"

Linker:

g++ -L/usr/local/systemc/lib-linux -m32 -o "systemc_test"  ./main.o   -lsystemc

ls /usr/local/systemc/lib-linux/

libsystemc-2.3.1.so libsystemc.a libsystemc.la libsystemc.so pkgconfig

What am I doing wrong? For the record, this works fine on Ubuntu (64-bit with multilib) using the same version of the systemc library, compiled and installed in exactly the same manner.

Thanks!

Last edited by kamz (2014-08-04 02:38:02)

Trilby · 2014-08-04 02:18:05

I'm not sure ldd/ld.so will find libs under /usr/local/lib-linux by default. Have you added that path to LD_LIBRARY_PATH?

What does `ldd systemc_test` return?

Last edited by Trilby (2014-08-04 02:19:52)

kamz · 2014-08-04 02:35:33

You're correct -- doesn't find that path.

ldd systemc_test

linux-gate.so.1 (0xf77ac000)
libsystemc-2.3.1.so => not found
libstdc++.so.6 => /usr/lib32/libstdc++.so.6 (0xf768f000)
libm.so.6 => /usr/lib32/libm.so.6 (0xf7643000)
libgcc_s.so.1 => /usr/lib32/libgcc_s.so.1 (0xf7628000)
libc.so.6 => /usr/lib32/libc.so.6 (0xf7465000)
/lib/ld-linux.so.2 (0xf77ad000)

Adding /usr/local/systemc/lib-linux to LD_LIBRARY_PATH solves the problem. I used a script under /etc/profile.d/ to set this at session start, so I now consider this solved. Out of curiousity, is it possible to avoid having to do this?

Scimmia · 2014-08-04 02:49:07

/etc/ld.so.conf.d/ is a better way of adding something to your library path.

kamz · 2014-08-04 02:57:02

Correct -- thanks!

EDIT:
Just in case anyone needs this:

create a file with .conf extension under /etc/ld.so.conf.d/ -- the file should contain the path to the directory in which the library is located
run ldconfig as root

Last edited by kamz (2014-08-04 03:17:06)

Trilby · 2014-08-04 11:27:25

Thanks scimmia - I've never had to do this, so while I could see the problem I was flailing for a solution and found the environment variable in the ld.so man page.

Arch Linux

#1 2014-08-04 02:11:37

[SOLVED] GCC multilib: cannot find shared library

#2 2014-08-04 02:18:05

Re: [SOLVED] GCC multilib: cannot find shared library

#3 2014-08-04 02:35:33

Re: [SOLVED] GCC multilib: cannot find shared library

#4 2014-08-04 02:49:07

Re: [SOLVED] GCC multilib: cannot find shared library

#5 2014-08-04 02:57:02

Re: [SOLVED] GCC multilib: cannot find shared library

#6 2014-08-04 11:27:25

Re: [SOLVED] GCC multilib: cannot find shared library

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