> Hmm, gcc/gcc.c still reads:
>
> 690 /* Conditional to test whether the LTO plugin is used or not.
> 691 FIXME: For slim LTO we will need to enable plugin unconditionally.
> This
> 692 still cause problems with PLUGIN_LD != LD and when plugin is built but
> 693 not useable. For GCC 4.6 we don't support slim LTO and thus we can
> enable
> 694 plugin only when LTO is enabled. We still honor explicit
> 695 -fuse-linker-plugin if the linker used understands -plugin. */
> 696
> 697 /* The linker has some plugin support. */
> 698 #if HAVE_LTO_PLUGIN > 0
> 699 /* The linker used has full plugin support, use LTO plugin by default.
> */
> 700 #if HAVE_LTO_PLUGIN == 2
Hmm, I see, your problem is that there is no -flto?
I guess you need to add that one then (rather than -fuse-linker-plugin).
Yep, we ought to enable plugin for default to make split LTO happy and probably
can
drop LTO_PLUGIN versioning. Richi?
Honza
> 701 #define PLUGIN_COND
> "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin"
> 702 #define PLUGIN_COND_CLOSE "}"
> 703 #else
> 704 /* The linker used has limited plugin support, use LTO plugin with
> explicit
> 705 -fuse-linker-plugin. */
> 706 #define PLUGIN_COND "fuse-linker-plugin"
> 707 #define PLUGIN_COND_CLOSE ""
> 708 #endif
> 709 #define LINK_PLUGIN_SPEC \
> 710 "%{"PLUGIN_COND": \
> 711 -plugin %(linker_plugin_file) \
> 712 -plugin-opt=%(lto_wrapper) \
> 713 -plugin-opt=-fresolution=%u.res \
> 714
> %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
> 715 }"PLUGIN_COND_CLOSE
> 716 #else
> 717 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin.
> */
> 718 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
> 719 %e-fuse-linker-plugin is not supported in this configuration}"
> 720 #endif
>
> --
> Markus
