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perl: require the "warnings" module
authorJim Meyering <meyering@fb.com>
Sun, 12 Jan 2020 02:59:42 +0000 (18:59 -0800)
committerJim Meyering <meyering@fb.com>
Sun, 12 Jan 2020 02:59:42 +0000 (18:59 -0800)
commit6b9d15b8bcb3c009374ccb21dc2c2be2333133d7
treea2f1b639039de0d7f478dfd9769b47e2710cd12d
parentba4b91abd5dbe486c71465b0968aa1a4a1198bd7
perl: require the "warnings" module

* m4/perl.m4: Also "use warnings", so we reject the perl found
on at least one IRIX 6.5 system. Reported by Bruno Haible in
https://lists.gnu.org/r/sed-devel/2020-01/msg00004.html
ChangeLog
m4/perl.m4