no dlfcn.h on MSYS (MINGW32) building on Windows

[Paul Dufresne]

Hi!, been a long time, and I regret to inform you that I did
not played with Slate for a long time now (no news in GUI).

Anyway I'm trying to build Slate on MSYS. I've installed libtool but
when trying to build slate-current under MSYS I get:
===
libtool --mode=compile gcc -O2 -fomit-frame-pointer -DNDEBUG=1 -s
-I../../../../../src/mobius/vm/platform/includes -I. -I../../../../..
-DSLATE_DATADIR=\"/usr/share/slate\" -o extprim.o -c extprim.c
 gcc -O2 -fomit-frame-pointer -DNDEBUG=1 -s
 -I../../../../../src/mobius/vm/platform/includes -I. -I../../../../..
 -DSLATE_DATADIR=\"/usr/share/slate\" -c extprim.c  -DDLL_EXPORT -DPIC
 -o .libs/extprim.o
extprim.c:2:19: dlfcn.h: No such file or directory
extprim.c: In function `openExternalLibrary':
extprim.c:41: error: `RTLD_NOW' undeclared (first use in this function)
===
I am using MSYS current (4.1.1).
So, as far I could tell, this means that we cannot use dlopen on MSYS to
dynamically open shared libraries by name like plugins do, am I right?
Libtool "knew" there was no dlfcn.h, but don't seems to absolutely need
it.
Maybe I would simply try with VC++ Express Edition;
Quite heavy for compiling Slate, or maybe I shoud switch to Cygwin.

Any comment on this?

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