> On 16 Nov 2022, at 09:06, Frederic Berat <fberat@xxxxxxxxxx> wrote: > > Hello again, > > Some progress on this, it looks like, at least for libpng, there is at one > place where the "Port AC_LANG_CALL" seems to be the culprit. > Specifically, the "," in the C comment, is interpreted by M4 as argument > split which in turn leads to the syntax error. > I made a small test where I "overquote" the snippet, which seems to work > around the problem for this package at least, but there may be better > solutions: I did notice this issue but when I investigated the broken packages, they were underquoting by the looks of it: - https://gitweb.gentoo.org/repo/gentoo.git/commit/sys-devel/autoconf?id=855f1f72f42c2f9b5ed97220e3ced97a35aa075b - https://bugs.gentoo.org/871753 But it's very possible that, as you note, autoconf itself has a problem and it was just bad luck wrt which packages broke first. Best, sam
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