add BuildRequires: gcc

Reference: https://fedoraproject.org/wiki/Changes/Remove_GCC_from_BuildRoot

perl-Devel-Cover.spec

@@ -6,6 +6,7 @@ Group:          Development/Libraries
 License:        GPL+ or Artistic
 URL:            https://metacpan.org/release/Devel-Cover
 Source0:        https://cpan.metacpan.org/authors/id/P/PJ/PJCJ/Devel-Cover-%{version}.tar.gz
+BuildRequires:  gcc
 BuildRequires:  coreutils
 BuildRequires:  findutils
 BuildRequires:  make