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MULTILIB_OSDIRNAMES, as used in target makefile fragments t-*, is undocumented.
In some of the t-linux64 Makefile fragments in config/gcc/, I found the following comment that seems to describe what the value of MULTILIB_OSDIRNAMES represents:
# On Debian, Ubuntu and other derivative distributions, the 32bit libraries
# are found in /lib32 and /usr/lib32, /lib64 and /usr/lib64 are symlinks to
# /lib and /usr/lib, while other distributions install libraries into /lib64
# and /usr/lib64. The LSB does not enforce the use of /lib64 and /usr/lib64,
# it doesn't tell anything about the 32bit libraries on those systems. Set
# MULTILIB_OSDIRNAMES according to what is found on the target.
Is there a more central location to which this comment should be moved? Or should it just be copied-and-pasted to the rest of the 64bit-Linux-specific Makefile fragments as well?
The point isn't documenting the rationale for particular choices, it's
documenting (in fragments.texi) the general semantics, including for the
A=B and A=!B forms. It looks like the documentation was added by
r193508 | doko | 2012-11-14 21:29:15 +0000 (Wed, 14 Nov 2012) | 36 lines
but without closing this bug.
Fixed so closing.(In reply to firstname.lastname@example.org from comment #3)
> It looks like the documentation was added by
> r193508 | doko | 2012-11-14 21:29:15 +0000 (Wed, 14 Nov 2012) | 36 lines
> but without closing this bug.
Most likely because he did not know there was a bug filed for this.