document MULTILIB_OSDIRNAMES, copied from genmultilib. Ok for the trunk?
Matthias
PR bootstrap/25508 * doc/fragments.texi: Document MULTILIB_OSDIRNAMES. Index: gcc/doc/fragments.texi =================================================================== --- gcc/doc/fragments.texi (revision 177846) +++ gcc/doc/fragments.texi (working copy) @@ -128,6 +128,19 @@ of options to be used for all builds. If you set this, you should probably set @code{CRTSTUFF_T_CFLAGS} to a dash followed by it. +@findex MULTILIB_OSDIRNAMES +@item MULTILIB_OSDIRNAMES +If @code{MULTILIB_OPTIONS} is used, this variable specifies the list +of OS subdirectory names. The format is either the same as of +@code{MULTILIB_DIRNAMES}, or a set of mappings. When it is the same +as @code{MULTILIB_DIRNAMES}, it describes the multilib directories +using OS conventions, rather than GCC conventions. When it is a set +of mappings of the form @code{gccdir=osdir}, the left side gives the +GCC convention and the right gives the equivalent OS defined location. +If the osdir part begins with a !, the os directory names are used +exclusively. Use the mapping when there is no one-to-one equivalence +between GCC levels and the OS. + @findex NATIVE_SYSTEM_HEADER_DIR @item NATIVE_SYSTEM_HEADER_DIR If the default location for system headers is not @file{/usr/include},