GMP bootstrap fails with Autoconf 2.69d

[Hans Åberg]

> On 15 Nov 2020, at 22:53, Marc Glisse <marc.glisse at inria.fr> wrote:
> 
> On Wed, 11 Nov 2020, Paul Eggert wrote:
> 
>> To fix the problem, I suggest using just [gmp-bugs at 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 at gmplib.org, see https://gmplib.org/manual/Reporting-Bugs.html], gmp)
>> +AC_INIT(GNU MP, GMP_VERSION, [gmp-bugs at 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.

One can also have an additional URL argument, which defines a variable PACKAGE_URL:

AC_INIT(GNU MP, GMP_VERSION, [gmp-bugs at gmplib.org (see https://gmplib.org/manual/Reporting-Bugs.html)], gmp, [https://gmplib.org/])