Re: make universe fails with MAKEOBJDIRPREFIX [cross builds part: sh: ./make_keys: Exec format error for init_keytry.h]

From: Mark Millard <>
Date: Fri, 30 Sep 2016 15:04:18 -0700

> --- lib/ncurses/ncurses__L ---
> ./make_keys keys.list > init_keytry.h
. . .
> --- lib/ncurses/ncurses__L ---
> sh: ./make_keys: Exec format error
> *** [init_keytry.h] Error code 126

Since the reworking of the build handling in recent (many) months "sh: ./make_keys: Exec format error" is a long standing problem for buildworld for cross builds. The native part of the build execution is trying to execute the cross-build target's make_keys (that was likely left from a prior cross-build and now doing incremental-build activity). lib/ncurses/ncurses__L is not the only place that this can happen. There is past list exchanges for this issue with other examples.

I rebuild after cleanworld when this happens in order to force a full rebuild instead of an incremental one --but I only build one cross build target at a time, not universe. I've never had such an after-cleanworld rebuild fail: only some later incremental builds.

Luckily in my experience so far most incremental builds do not go back through those areas (such as lib/ncurses/ncurses__L ) and so do not try to execute make_keys (stated in terms of this example). So the incremental builds for me are usually effective --but sometimes lib/ncurses/ncurses__L is rebuilt.

It has been a fairly long time since my 11.0 related activities (tracking stable/11 now) have run into this but likely lib/ncurses/ncurses__L (and the like) simply have not rebuilt in my cross builds. I've no head (CURRENT) activities going on at this point.

Mark Millard
markmi at
Received on Fri Sep 30 2016 - 20:04:29 UTC

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