Add BR: perl.
Perl is no longer implicitly included in the build root. See:
https://fedoraproject.org/wiki/Packaging:Perl#Build_Dependencies
No rebuild is required for this change.
The error was:
make[1]: Entering directory '/builddir/build/BUILD/libcap-2.25/libcap'
=> making cap_names.list.h from /builddir/build/BUILD/libcap-2.25/libcap/../libcap/include/uapi/linux/capability.h
perl -e 'while ($l=<>) { if ($l =~ /^\#define[ \t](CAP[_A-Z]+)[ \t]+([0-9]+)\s+$/) { $tok=$1; $val=$2; $tok =~ tr/A-Z/a-z/; print "{\"$tok\",$val},\n"; } }' /builddir/build/BUILD/libcap-2.25/libcap/../libcap/include/uapi/linux/capability.h | fgrep -v 0x > cap_names.list.h
/bin/sh: perl: command not found
Makefile:47: recipe for target 'cap_names.list.h' failed
make[1]: *** [cap_names.list.h] Error 1
make[1]: Leaving directory '/builddir/build/BUILD/libcap-2.25/libcap'
Makefile:12: recipe for target 'all' failed
make: *** [all] Error 2