/usr/lib/x86_64-linux-gnu/perl5/5.26/Pango/Install/pango-perl-versions.h is in libpango-perl 1.227-2build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | #define PANGO_MAJOR_VERSION (1)
#define PANGO_MINOR_VERSION (40)
#define PANGO_MICRO_VERSION (6)
#define PANGO_CHECK_VERSION(major,minor,micro) \
(PANGO_MAJOR_VERSION > (major) || \
(PANGO_MAJOR_VERSION == (major) && PANGO_MINOR_VERSION > (minor)) || \
(PANGO_MAJOR_VERSION == (major) && PANGO_MINOR_VERSION == (minor) && PANGO_MICRO_VERSION >= (micro)))
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