Build problem on ia64

[Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz>]

Hello,

when configure is run for libstdc++-v3 during build, I get the following error:

configure:2417: checking for C compiler default output file name
configure:2420:  /abuild/gcc-test/gcc/objdir/gcc/xgcc -B/abuild/gcc-test/gcc/objdir/gcc/ -B/usr/local/ia64-unknown-linux-gnu/bin/ -B/usr/local/ia64-unknown-linux-gnu/lib/ -isystem /usr/local/ia64-unknown-linux-gnu/include -isystem /usr/local/ia64-unknown-linux-gnu/sys-include -O2 -g -O2 -O2 -g -O2  conftest.c  >&5
configure:2423: $? = 0
configure:2469: result: a.out
configure:2474: checking whether the C compiler works
configure:2480: ./a.out
./a.out: error while loading shared libraries: libunwind.so.7: cannot open shared object file: No such file or directory
configure:2483: $? = 127
configure:2492: error: cannot run C compiled programs.
If you meant to cross compile, use `--host'.
See `config.log' for more details.

libunwind.so.7 is built in gcc directory, but linker apparently is not
told in where to find it (with LD_LIBRARY_PATH set the things work
correctly).

Where is the right place to fix this (I have very little understanding
of how gcc's build system works :-( )?

Zdenek