[PATCH] Under cygwin, searching library of type cyg<name>.dll when -l<name> option is used.

[Denis Chancogne]

Hi,

under Cygwin, when you use libtool with -l<name> option, it search only libraries of the type : lib<name>*.
Because I think it wants to link with libraries lib<name>.dll.a that it produce.

But often there is no lib<name>.dll.a, only cyg<name>.dll (example: /bin/cyghttpd2core.dll)
and ld is capable of linking with this kind of library.

So I send you a patch to search libraries of type either
- lib<name>*, cyg<name>* or <name>* under Cygwin,
- lib<name>*, pw<name>* or <name>* under MingW,
- and lib<name>* by default.

I have added <name>* format because for example when I have compiled icu libraries, their
ld-config tool gave the following options to link : -lcygicuin38 ... (instead of -licuin38).

Regards
Denis

libtool.m4.patch
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ltmain.m4sh.patch
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