On Wed, 11 Nov 2020, Paul Eggert wrote:

The Autoconf manual has long said that the 3rd argument of AC_INIT must be an email address.

Which is a bad idea, we don't want people blindly sending an email, we want them to read instructions first. A URL makes more sense.

To fix the problem, I suggest using just [gmp-bugs@gmplib.org] as the 3rd argument of AC_INIT, as being the simplest; or if you want the commentary, put it in as valid RFC 5322 commentary, e.g., by parenthesizing it:

diff -r 18875a0a3f89 configure.ac
--- a/configure.ac      Tue Nov 10 18:17:13 2020 +0100
+++ b/configure.ac      Wed Nov 11 22:25:59 2020 -0800
@@ -37,7 +37,7 @@

AC_REVISION($Revision$)
AC_PREREQ(2.59)
-AC_INIT(GNU MP, GMP_VERSION, [gmp-bugs@gmplib.org, see https://gmplib.org/manual/Reporting-Bugs.html], gmp) +AC_INIT(GNU MP, GMP_VERSION, [gmp-bugs@gmplib.org (see https://gmplib.org/manual/Reporting-Bugs.html)], gmp)
AC_CONFIG_SRCDIR(gmp-impl.h)
m4_pattern_forbid([^[ \t]*GMP_])
m4_pattern_allow(GMP_LDFLAGS)

Thanks, that looks like a nice workaround.

--
Marc Glisse
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