-L$(libdir)

[NIIBE Yutaka]

I'm looking ncurses-5.2-20020112a.

Ncurses' build system uses -L$(libdir) when link.  It seems it's
introduced 971115.

I think that it's considered bad practice to include -L$(libdir)
option.  It could be convenient for broken environment (say, the
linker not searching /usr/local/lib), but it is bad because it is
possible for linker to find different library.

For cross compilation (./configure --host=something-different), it
causes disaster because -L$(libdir) let linker find library of
build system.

I think that -L$(libdir) should be removed from invocation of linker.
 
How do you think?
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