phpize: Can not build extensions with config[0-9].m4

[estahn]

https://bugs.php.net/bug.php?id=53571

[estahn]

@yosifkit Thoughts?

[tianon]

Sorry for the long delay. Using mv here is definitely not safe, since the files extracted by docker-php-source ought to be left as-is by our scripts. A symlink or really perhaps a stub with sinclude(configN.m4) as noted in the linked bug report would be more appropriate.

See #89 for some additional discussion on the topic.

I'm still not 100% convinced this is justifiable to include by default though, given the low usage in included extensions:

root@d5f28c8fbe17:/var/www/html# find /usr/src/php/ext -name 'config[0-9].m4'| sort/usr/src/php/ext/date/config0.m4/usr/src/php/ext/libxml/config0.m4/usr/src/php/ext/mysqlnd/config9.m4/usr/src/php/ext/openssl/config0.m4/usr/src/php/ext/pcre/config0.m4/usr/src/php/ext/recode/config9.m4/usr/src/php/ext/sqlite3/config0.m4/usr/src/php/ext/zlib/config0.m4

(most of those are already included by default)

[yosifkit]

Closing as the only one listed by @tianon that is not installed by default is recode and that one works fine in php:7.2.

FROM php:7.2
RUN apt-get update \
&& apt-get install -y librecode0 librecode-dev \
&& rm -rf /var/lib/apt/lists/*
&& docker-php-ext-install recode \
&& apt-get purge -y --auto-remove librecode-dev