This bug was fixed in the package m4 - 1.4.18-5ubuntu1
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m4 (1.4.18-5ubuntu1) impish; urgency=medium
* d/p/04-fix-sigstksz.patch: fix FTBFS with glibc 2.34. LP: #1939909
-- Simon Chopin Fri, 13 Aug 2021 18:31:42
+0200
** Changed in: m4 (Ubuntu)
Status: In Progress =>
I sponsored this after running update-maintainer.
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https://bugs.launchpad.net/bugs/1939909
Title:
FTBFS against glibc 2.34
To manage notifications about this bug go to:
** Changed in: m4 (Ubuntu)
Importance: Undecided => High
** Tags added: ftbfs
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You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1939909
Title:
FTBFS against glibc 2.34
To manage notifications
A fixed version of the package has been upload to the following PPA:
https://launchpad.net/~schopin/+archive/ubuntu/test-
ppa/+sourcepub/12646638/+listing-archive-extra
Attached is the debdiff for the fix.
** Patch added: "m4.debdiff"
