We are seeing regular build failures due to libc.so being installed again and
another parallel make job tries to read the partially written libc.so at the
same time. When building with -j32 or higher this almost always happens on
the first clean build (subsequent incremental builds always work fine).
Using -S should "fix" the "section header table goes past the end of the
file: e_shoff = 0x..." errors that have started to plague our builds.
I originally thought this only affected CheriBSD, but I just got the same
error while building the latest upstream FreeBSD.
The real fix should be to not install libraries twice, but until then this
workaround is needed.
Obtained from: CheriBSD (https://github.com/CTSRD-CHERI/cheribsd/commit/49837edd3efd5d02a1b120c47f00cfc2d59a9a8e)
Patch by: Jessica Clarke <firstname.lastname@example.org>