8a6ee426c2
The ${host_builddir}/largefile-config.h header can't be written until
its parent directory has been created, so it needs to have the creation
of that directory as a prerequisite.
libstdc++-v3/ChangeLog:
PR libstdc++/106162
* include/Makefile.am (largefile-config.h): Add
stamp-${host_alias} prerequisite.
* include/Makefile.in: Regenerate.