From: "Vít Ondruch" <v.ondruch@...>
Date: 2018-02-18T12:12:16+01:00
Subject: [ruby-core:85616] Re: Why require autoconf 2.67+

This could help you to build Ruby with older autoconf (2.63 is default
on RHEL/CentOS 6):

~~~
# Allow to use autoconf 2.63.
sed -i '/AC_PREREQ/ s/(.*)/(2.62)/' configure.in

# AS_FOR is not supported on RHEL6, inject our own version.
cat >> acinclude.m4 <<\EOF
m4_ifndef([AS_FOR], [
  m4_define([AS_FOR], [
    m4_pushdef([$1], [$$2])
    for $2 in $3; do
      $4
    done
    m4_popdef([$1])
  ])
])%endif

EOF

sed -i '/AS_FUNCTION_DESCRIBE/ s/^/#/' configure.in
sed -i '/AS_FUNCTION_DESCRIBE/ s/^/#/' acinclude.m4
~~~


V��t

2018-02-17 13:46 GMT+01:00 leam hall <leamhall@gmail.com>:
> Please pardon the intrusion; I am new to Ruby and like to pull the
> development version of Ruby to compile and code with.
>
> On 8 Feb 18 (US/Eastern) I pulled the code from GitHub and Ruby
> 2018-02-09 trunk 62326 compiled fine and all tests except for some
> timezone ones passed.
>
> Today I pulled the source again. The configure step worked well but make failed:
>
>   configure.ac:7: error: Autoconf version 2.67 or higher is required
>   configure.ac:7: the top level
>   autom4te: /usr/bin/m4 failed with exit status: 63
>   make: *** [configure] Error 63
>
> In configure.ac line 7:
>
>   AC_PREREQ(2.67)
>
> If I changed 2.67 to 2.63 which is what my server has, the make
> configure step fails with:
>
>   ./configure: line 674: syntax error near unexpected token `colorize_result,'
> .  /configure: line 674: `AS_FUNCTION_DESCRIBE(colorize_result, MSG,
> Colorize result)'
>
> I tried commenting out the lines it complained about but that led to
> an "unexpected token 'fi'" error on line 76907. Commented that out but
> then hit:
>
>   ./configure: line 77563: syntax error near unexpected token `opt,'
>
> At this point I do not know if it is better to follow the path and try
> to see what the difference is or just ask. If I change things then the
> next pull breaks the changes. So I decided to ask.
>
> Thank you .
>
> Leam
>
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