[svlug] how to modify default directory search order for GCC

[tony yu]

i have researched a bit and it seems like that order is pre-built inside GCC
(or actually ld, the linker).
My problem is that I have built a library (say libz.so) under my current
directory, and i want my executable (say, mytest)
to be linked and run against that version.
However, since libz.so already exists on my system (/usr/lib), although it's
an old version, by running following gcc command:

gcc -o mytest mytest.c -L. -lz

and ldd mytest will show

it is linked to /usr/lib/libz.so

and it should be like that, as -L. puts the additional directory AFTER the
default order.

and running mytest will still use /usr/libz.so even I export
LD_LIBRARY_PATH=. as it is already located during linking time.

My question is, and hope, someone has seen it before,

how do I make my exectuable use the one I desired (in current directory)
instead of the one at /usr/lib?

Thanks!
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