meson: Add an option to specify the WGL gallium megadriver filename
Specifying the name at build time, as opposed to renaming after
the build, serves two purposes:
1. The link from Mesa's OpenGL32.dll and (and EGL/GLES) to the
megadriver is done by filename. If using these frontends, the
megadriver can't be renamed afterwards. And Windows doesn't
have very good symlink support, so that's not really an option
either.
2. The symbol (PDB) filename is also embedded in the DLL using the
build-time expected filename. Renaming can produce odd artifacts
while debugging.
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/7115
Reviewed-by: Bill Kristiansen <billkris@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18239>
2 files changed
