https://sourceware.org/bugzilla/show_bug.cgi?id=23573
--- Comment #18 from Benjamin Redelings <benjamin.redelings at gmail dot com>
---
Hi Nick,
Thank you so much for looking into this.
I reran the exact same command and now it works with the linker plugin just
fine. I also check using /proc, and the linker process has about 30 open
files. I have done some package upgrades, and it looks like a patch for Debug
bug 928214 ("Configure LTO support correctly",
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=928214) may be the one that
fixed the problem.
In any case, for the benefit of any future triggerers of this bug:
1. The problem is probably with GCC, not binutils.
2. I was not using native mingw binutils, I was using Debian's linux-native
cross compiler.
Referring to the bug report above, one possible explanation is that
* the LTO plugin was misconfigured in autoconf
* this caused gcc to fall back to the lto-wrapper helper and NOT use the linker
plugin
* the lto-wrapper help creates N open file descriptors for an archive
containing N objects.
* the actual lto-plugin works fine.
This is somewhat speculative, but might hopefully give someone a path to
explore if they run into this again.
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