How can I fix that?Error: Package: libgdiplus0-5.6-0.xamarin.1.epel7.x86_64 (download.mono-project.com_repo_centos_)
Requires: libpng15.so.15(PNG15_0)(64bit)
Error: Package: mono-core-5.12.0.233-0.xamarin.3.epel7.x86_64 (download.mono-project.com_repo_centos_)
Requires: libc.so.6(GLIBC_2.16)(64bit)
Error: Package: libgdiplus0-5.6-0.xamarin.1.epel7.x86_64 (download.mono-project.com_repo_centos_)
Requires: libc.so.6(GLIBC_2.14)(64bit)
Error: Package: mono-devel-5.12.0.233-0.xamarin.3.epel7.x86_64 (download.mono-project.com_repo_centos_)
Requires: libc.so.6(GLIBC_2.15)(64bit)
Error: Package: libgdiplus0-5.6-0.xamarin.1.epel7.x86_64 (download.mono-project.com_repo_centos_)
Requires: libpng15.so.15()(64bit)
Error: Package: libmonosgen-2_0-1-5.12.0.233-0.xamarin.3.epel7.x86_64 (download.mono-project.com_repo_centos_)
Requires: libc.so.6(GLIBC_2.15)(64bit)
Error: Package: libgdiplus0-5.6-0.xamarin.1.epel7.x86_64 (download.mono-project.com_repo_centos_)
Requires: libtiff.so.5()(64bit)
Error: Package: libgdiplus0-5.6-0.xamarin.1.epel7.x86_64 (download.mono-project.com_repo_centos_)
Requires: libtiff.so.5(LIBTIFF_4.0)(64bit)
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest
How can I update to CentOS 7?
Thanks.