How to get APCu on PHP 7?

[nazar-pc]

Here is sample build: https://travis-ci.org/nazar-pc/CleverStyle-CMS/builds/125947543
Config:

...
before_script:
  - mysql -e 'CREATE DATABASE `cscms.travis`;'
  - if [[ "$(php -v | grep 'PHP 5')" ]]; then echo yes | pecl install apcu-4.0.8; fi
  - if [[ "$(php -v | grep 'PHP 7')" ]]; then echo yes | pecl install apcu; fi
  - echo "extension = memcached.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
...

APCu in PHP 5.6 works fine, in PHP 7 doesn't.

But if I add:

  - if [[ "$(php -v | grep 'PHP 7')" ]]; then echo 'extension = apcu.so' >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini; fi

Immediately I'm getting errors: https://travis-ci.org/nazar-pc/CleverStyle-CMS/jobs/125948629

There definitely is something wrong with PHP 7 setup, can't have APCu there, even though manual insertion extension = apcu.so worked in past.

[BanzaiMan]

https://travis-ci.org/nazar-pc/CleverStyle-CMS/jobs/125948629#L294

http://php.net/manual/en/apcu.installation.php says APCu does not work with PHP 7.

Use apc.so instead. Which should be available.

[nazar-pc]

1. No, apc.so is not available, also see apc.so file not found #5618
2. APCu does work with PHP 7; it worked for months as beta and now it is even considered stable and I have it installed on Ubuntu 16.04 using PECL, see https://pecl.php.net/package/APCu

[BanzaiMan]

Something is referring to a nonexistent header. See the line on the log I indicated above. php_smart_striing.h exists, though.

[nazar-pc]

Sorry for confusion...
PECL is stupid enough to be unable to install correct version.
PHP 7-compatible version 5.x was the latest stable for some time and 4.x was not updated for some time, but now there is a new release of APCu 4.x and it is picked even by PHP 7 installations for whatever reason as latest, but fails to install... When specified specific version it works fine: https://travis-ci.org/nazar-pc/CleverStyle-CMS/builds/125953085