installation - Installing GDAL on CentOS?

I'm having issues with installing GDAL on a fresh install of Centos7 using the ELGIS repo. Here's my commands and output:

sudo rpm -Uvh http://elgis.argeo.org/repos/6/elgis-release-6-6_0.noarch.rpm
sudo yum install -y gdal

Here are the console errors:

--> Finished Dependency Resolution

Error: Package: gdal-1.9.2-4.el6.x86_64 (elgis)
       Requires: libCharLS.so.1()(64bit)
Error: Package: gdal-libs-1.9.2-4.el6.x86_64 (elgis)
       Requires: libhdf5.so.6()(64bit)
Error: Package: gdal-1.9.2-4.el6.x86_64 (elgis)
       Requires: libnetcdf.so.6()(64bit)
Error: Package: gdal-libs-1.9.2-4.el6.x86_64 (elgis)
       Requires: libdap.so.11()(64bit)
Error: Package: gdal-libs-1.9.2-4.el6.x86_64 (elgis)
       Requires: libdapclient.so.3()(64bit)

Error: Package: gdal-libs-1.9.2-4.el6.x86_64 (elgis)
       Requires: libxerces-c-3.0.so()(64bit)
Error: Package: gdal-1.9.2-4.el6.x86_64 (elgis)
       Requires: libdapclient.so.3()(64bit)
Error: Package: gdal-1.9.2-4.el6.x86_64 (elgis)
       Requires: libhdf5.so.6()(64bit)
Error: Package: gdal-libs-1.9.2-4.el6.x86_64 (elgis)
       Requires: libCharLS.so.1()(64bit)
Error: Package: gdal-1.9.2-4.el6.x86_64 (elgis)
       Requires: libmysqlclient.so.16()(64bit)

Error: Package: gdal-libs-1.9.2-4.el6.x86_64 (elgis)
       Requires: libdapserver.so.7()(64bit)
Error: Package: gdal-libs-1.9.2-4.el6.x86_64 (elgis)
       Requires: libfreexl.so.1()(64bit)
Error: Package: gdal-1.9.2-4.el6.x86_64 (elgis)
       Requires: libxerces-c-3.0.so()(64bit)
Error: Package: gdal-libs-1.9.2-4.el6.x86_64 (elgis)
       Requires: libmysqlclient.so.16()(64bit)
Error: Package: gdal-libs-1.9.2-4.el6.x86_64 (elgis)
       Requires: libcfitsio.so.0()(64bit)

Error: Package: gdal-1.9.2-4.el6.x86_64 (elgis)
       Requires: libpoppler.so.5()(64bit)
Error: Package: gdal-libs-1.9.2-4.el6.x86_64 (elgis)
       Requires: libgta.so.0()(64bit)
Error: Package: gdal-1.9.2-4.el6.x86_64 (elgis)
       Requires: libcfitsio.so.0()(64bit)
Error: Package: gdal-libs-1.9.2-4.el6.x86_64 (elgis)
       Requires: libnetcdf.so.6()(64bit)
Error: Package: gdal-libs-1.9.2-4.el6.x86_64 (elgis)
       Requires: libmysqlclient.so.16(libmysqlclient_16)(64bit)

Error: Package: gdal-1.9.2-4.el6.x86_64 (elgis)
       Requires: libdapserver.so.7()(64bit)
Error: Package: gdal-libs-1.9.2-4.el6.x86_64 (elgis)
       Requires: libarmadillo.so.3()(64bit)
Error: Package: gdal-1.9.2-4.el6.x86_64 (elgis)
       Requires: libgta.so.0()(64bit)
Error: Package: gdal-1.9.2-4.el6.x86_64 (elgis)
       Requires: libfreexl.so.1()(64bit)
Error: Package: gdal-1.9.2-4.el6.x86_64 (elgis)
       Requires: libdap.so.11()(64bit)

Error: Package: gdal-1.9.2-4.el6.x86_64 (elgis)
       Requires: libarmadillo.so.3()(64bit)
Error: Package: gpsbabel-1.4.4-1.el6.x86_64 (elgis)
       Requires: libshp.so.1()(64bit)
Error: Package: gdal-libs-1.9.2-4.el6.x86_64 (elgis)
       Requires: libpoppler.so.5()(64bit)

Is there another repo I need to install to make this work?

Answer

ELGIS requires EPEL (see https://fedoraproject.org/wiki/EPEL/FAQ#howtouse for EPEL).

However I'm not sure that you really want to use ELGIS 6 on CentOS 7. Its intended for RHEL 6 / CentOS 6 / Scientific Linux 6.

Instead, you probably just want to use EPEL for CentOS 7 for something like GDAL. EPEL 7 has GDAL 1.11.0, which isn't quite the latest, but is certainly more current than the 1.9.2 that are you trying to install.