How to change library default dir for gcc or add another path?

Question

Related topic is here

Tried to link some files to /lib like this

[/opt/lib] # ln -s libncurses.so.5.7 /lib/
[/opt/lib] # ln -s libncursesw.so.5.7 /lib/

Compiler still can't find any ncurses libs...

Trying to compile menuconfig in psybnc source. Where those auto tools seeking libraries? How to debug auto tools or just tell me how to add another library path because /opt/lib need to be used instead of /lib or any other place where auto tools are seeking.

p.s. this doesn't work

[/share/HDA_DATA/Linux/psybnc] # export LD_LIBRARY_PATH="/opt/lib:$LD_LIBRARY_PATH"         
[/share/HDA_DATA/Linux/psybnc] # make menuconfig
Initializing Menu-Configuration
[*] Running Conversion Tool for older psyBNC Data.
Using existent configuration File.
[*] Running Autoconfig.
System: Linux
Socket Libs: Internal.
Environment: Internal.
Time-Headers: in time.h and sys/time.h
Byte order: Big Endian.
IPv6-Support: Yes, general support. But no interface configured.
async-DNS-Support: Yes.
SSL-Support: No openssl found. Get openssl at www.openssl.org
Creating Makefile
[*] Creating Menu, please wait.
This needs the ncurses library. If it is not available, menuconf wont work. If you are using curses, use make menuconfig-curses instead.

[/share/HDA_DATA/Linux/psybnc] # ls /opt/lib | grep libncurses
libncurses.so@
libncurses.so.5@
libncurses.so.5.7*
libncursesw.so@
libncursesw.so.5@
libncursesw.so.5.7*

UPDATE:

this topic flagged for removal, answer is posted on related topic which I mentioned above

Solution

Try setting LD_LIBRARY_PATH before compiling, in a bash console type:

export LD_LIBRARY_PATH="your_new_lib_path"

or, to keep the previous settings and just prepend your new library path:

export LD_LIBRARY_PATH="your_new_lib_path:$LD_LIBRARY_PATH"

Comments

[sparcboy]

updated post, doesn't work

[rems]

Is /opt/lib listed in /etc/ld.so.conf ? Did you run ldconfig ? What operating system are you running? Are the ncurses development packages installed?

[sparcboy]

oh man... have you read related topic? =/ Linux NAS-LI 2.6.33.2 #1 Wed Jan 5 02:06:35 CST 2011 armv5tel unknown , libs installed with IPKG packet manager (native), /opt/lib is in ld.so.conf. ldconfig shows absolutely nothing. file command: /opt/lib/libncurses.so.5.7: ELF 32-bit LSB shared object, ARM, version 1 (SYSV), dynamically linked, stripped

[rems]

Have you installed the ncurses-devel package ?

[sparcboy]

that was no, but that is a part of an answer=)