[Bug bootstrap/49173] [4.7 Regression] No rule to make target `../../../../work/libgcc/../gcc/libgcc-std.ver', needed by `libgcc.map'.

[bernds at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49173

--- Comment #2 from Bernd Schmidt <bernds at gcc dot gnu.org> 2011-05-26 
15:12:56 UTC ---
Argh, the stupid half-transition again. I grepped only in gcc/config.

I seem to fail getting a cross-build to that point, so could you try changing
  $(gcc_srcdir)/libgcc-std.ver
to either
  $$(libgcc_objdir)/libgcc-std.ver

or simply
  libgcc-std.ver

One of the two should work; I'm not totally sure how the Makefiles work but I
suspect the second form should do the trick.