d3dx9.lib is not managed by ld, but libd3dx9.a is

[Vincent Torri]

Hey,

I'm writing a dll using D3D and autotools stuff (MSYS / MinGW). I pass 
-ld3dx9 and i have added everything so that the dll is built.

If I add from the DirectX SDK d3dx9.lib in /mingw/lib, i have the usual warning 
message from linker / libtool:

*** Warning: linker path does not have real file for library -ld3dx9. blah blah 
blah

and only the static lib is built.

If I rename d3dx9.lib to libd3dx9.a, then the DLL is built. I don't understand 
why because, according to the doc of ld for win32:

http://sourceware.org/binutils/docs/ld/WIN32.html

if I pass -ld3dx9, then d3dx9.lib should be used.

What is the reason of the failure ?

thank you

Vincent Torri