FreeBSD calls it tidy5. Still, the check is not perfect, as both
old and new lib can coexist. ATM, the preference is to pick up the
old lib, still. In it's absense the new one will be looked up.
Our existing libtidy support is based on the legacy "HTML tidy"
project. That project now has a successor called tidy-html5, where all
new features and bugfixes happen. Of particular note are the fixes for
two security vulnerabilities, CVE-2015-5522 and CVE-2015-5523.
The API is largely unchanged in the new project (which is truly the
successor of the original -- not a fork), and so it is almost a
drop-in replacement as far as PHP is concerned. However, one file has
changed in the new project: "buffio.h" has been moved to
"tidybuffio.h".
This commit detects the presence of tidybuffio.h at build time, and
then adjusts the import statement in tidy.c accordingly. The result is
a build that works against either the legacy project or the new
tidy-html5 project, although the test suite for the tidy extension now
fails. Those failures are not critical and will be fixed.
Gentoo-Bug: 561452
Gentoo-Bug: 585474
PHP-Bug: 72379
