-lib Switch for ldmd2

[dsimcha]

The ldmd2 script, which is supposed to provide DMD-like command line flags to LDC, doesn't support building libraries using -lib. This is easy to work around and fix (just build individual object files and archive them manually), but it should be supported so that LDC can be a drop in replacement for DMD without any changes to build processes.

[bioinfornatics]

yes, our plan is to do something like #4 (comment)
-lib for generate by default shared lib and maybe do -static-lib
But with have yet works on in ldc2 not discuss the better way to do that

[dsimcha]

IMHO -lib, at least for the ldmd2 compatibility script, should do exactly what it does under dmd and gdmd, i.e. build a static library. Building shared libraries should require using a separate switch. However, this is a relatively minor detail. Much more important is to just get an easy, single command way to build a static lib from a bunch of source files in place.

[bioinfornatics]

we could do too -lib and -dynamic-lib :-)

[Trass3r]

or -lib and -shared