On 27/04/2013, at 10:28 PM, john skaller wrote:
> BTW: There's a nasty problem now with plugins. Well, an ugliness anyhow.
>
> Previously, a plugin was just a DLL. So the generated object file had to be
> suitable code: on the x86_64 on unices (Linux, OSX) this means specifying
> the flag -fPIC to get position independent code. Since there's an overhead
> with
> this we don't do it for static linkage.
>
> But now, plugins can also be statically linked. So as well as making
>
> plugin.dylib (on OSX)
>
> we have to make
>
> plugin.o
>
> for static linkage. The problem is this will work if we're linking the plugin
> into
> an executable but NOT if we're linking it into a DLL (because to do that the
> code has to be position independent). So we have to have ANOTHER file as well:
>
> plugin.os
>
> which is position independent, the same as the RTL. Grrrr.
By extension, we actually need the RTL to have TWO kinds of archive:
libflx_something_static.a # for making executables
libflx_something_dynamic.a # for making shared libs
libflx_something_dynamic.so # for run time loading (either exes or dlls)
Now, there's a reason Felix puts _static.a and _dynamic.so: its to stop
idiot linkers like unix ld picking static link library if a dynamic link library
happens to be missing (and vice-versa). Systems like Debian make this
serious mistake, providing both *.a and *.so variants of a library:
its a bad idea given how broken ld is.
But now, we have the problem back! We actually need libflx_something_dynamic.a
to mean it contains *.os files, that is, files compiled with -fPIC which are
therefore
suitable for linking into a shared library.
Which reintroduces the old problem ;(
--
john skaller
skal...@users.sourceforge.net
http://felix-lang.org
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