How can I find out exactly where gcc and ld look for libraries?
The manual pages mention a default search mechanism, but never say exactly
what that is, how it works (where it's configured on Linux or specifically
Debian), or what the default search directories are.
The problem I'm having is that gcc seems to see some libraries in /lib and
not others, and similarly sees some libraries in /usr/lib but not others.
For example, /lib contains both libcrypt and libctutils:
-rw-r--r-- 1 root root 20112 Aug 14 18:11
/lib/libcrypt-2.1.3.so
lrwxrwxrwx 1 root root 17 Aug 14 18:11 /lib/libcrypt.so.1
-> libcrypt-2.1.3.so
lrwxrwxrwx 1 root root 19 Aug 14 18:11
/lib/libctutils.so.0 -> libctutils.so.0.0.0
-rw-r--r-- 1 root root 18252 Aug 14 18:11
/lib/libctutils.so.0.0.0
but gcc can see libcrypt:
$ gcc test.c -lcrypt
$
and not libctutils:
$ gcc test.c -lctutils
/usr/bin/ld: cannot find -lctutils
collect2: ld returned 1 exit status
$
Similarly, /usr/lib contains both libdb1 and libdb2:
-rw-r--r-- 1 root root 80582 May 1 14:27 /usr/lib/libdb1.a
lrwxrwxrwx 1 root root 16 Aug 14 22:51 /usr/lib/libdb1.so
-> /lib/libdb1.so.2
lrwxrwxrwx 1 root root 15 Aug 14 18:10
/usr/lib/libdb2.so.2 -> libdb2.so.2.7.7
-rw-r--r-- 1 root root 278604 Aug 14 18:10
/usr/lib/libdb2.so.2.7.7
but gcc can see only libdb1 but not libdb2:
$ gcc test.c -ldb1
$ gcc test.c -ldb2
/usr/bin/ld: cannot find -ldb2
collect2: ld returned 1 exit status
$
Any ideas?
(I've run ldconfig, but does that make any difference for compiling
and linking (vs. linking at load time)?)
Thanks,
Daniel
--
Daniel Barclay
[EMAIL PROTECTED]
(Hmm. A little worrisome: http://www.junkbusters.com/cgi-bin/privacy
http://www.anonymizer.com/snoop.cgi )
