CODEWITHSUNDEEP
gcclinkershared-libraries
Carles Araguz
Carles Araguz

Reputation: 1177

Why ld unable to find my shared library?

I have a custom library called libtaskres.so that I installed in /usr/lib/procman. My Makefile builds my program like this:

gcc -c procman.c -o obj/procman.o
gcc -c procman_power.c -o obj/procman_power.o
gcc -c procman_sched.c -o obj/procman_sched.o
gcc obj/procman.o obj/procman_power.o obj/procman_sched.o -o procman -ltaskres

But whenever I make it, the linker returns the following error:

/usr/bin/ld: cannot find -ltaskres
collect2: error: ld returned 1 exit status
make: *** [procman] Error 1

But I did, though, included my library, using ldconfig:

:$ cat /etc/ld.so.conf.d/procman.conf
/usr/lib/procman

:$ ls /usr/lib/procman/
total 24K
24K -rw-r--r-- 1 root root 21K 2013-Oct-31 15:06:14 libtaskres.so

I checked also:

:$ ldconfig -v | grep libtaskres
    libtaskres.so -> libtaskres.so

What am I doing wrong? If I add the -L/usr/lib/procman to the linker parameters it seems to find it, but I shouldn't need it, right?

Upvotes: 0

Views: 761

Answers (1)

Some programmer dude
Some programmer dude

Reputation: 409136

The ld.so.conf file (and its sub-configs in ld.so.conf.d) are for the runtime loader, not for the linker.

You still need to use the -L options when linking.

Upvotes: 2

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