This should fix it:

diff --git a/perl-Devel-CheckLib.spec b/perl-Devel-CheckLib.spec
index 9645a77..4e0d6f3 100644
--- a/perl-Devel-CheckLib.spec
+++ b/perl-Devel-CheckLib.spec
@@ -31,6 +31,7 @@ BuildRequires:  perl(File::Spec::Functions)
 BuildRequires:  perl(IO::File)
 BuildRequires:  perl(Capture::Tiny)
 BuildRequires:  perl(lib)
+BuildRequires:  perl(blib)
 BuildRequires:  perl(Test::More) >= 0.88
 # Optional tests
 %if %{with perl_Devel_CheckLib_enables_optional_test}

It's not visible in the current buildroot because for some reason, the testsuite does not find GCC, so not much is tested:

PERL_DL_NONLAZY=1 "/usr/bin/perl" "-MExtUtils::Command::MM" "-MTest::Harness" "-e" "undef *Test::Harness::Switches; test_harness(0, 'blib/lib', 'blib/arch')" t/*.t
t/00-load.t ................... ok
t/analyze-binary.t ............ skipped: Couldn't find your C compiler
Subroutine Config::STORE redefined at t/bad-single-word-compiler.t line 19.
t/bad-single-word-compiler.t .. ok
t/cmdline-LIBS-INC.t .......... skipped: Couldn't find your C compiler
t/custom-function.t ........... skipped: Couldn't find your C compiler
t/dash-l-libs.t ............... skipped: Couldn't find your C compiler
t/exit_with_message.t ......... skipped: Couldn't find your C compiler
t/flags.t ..................... skipped: Couldn't find your C compiler
t/found.t ..................... skipped: Couldn't find your C compiler
t/headers.t ................... skipped: Couldn't find your C compiler
Subroutine Config::STORE redefined at t/multi-word-compiler.t line 19.
t/multi-word-compiler.t ....... ok
t/not_found.t ................. skipped: Couldn't find your C compiler
All tests successful.
Files=12, Tests=3,  1 wallclock secs ( 0.02 usr  0.01 sys +  0.67 cusr  0.07 csys =  0.77 CPU)
Result: PASS