diff --git a/easybuild/easyconfigs/c/CMake/CMake-3.9.1-GCCcore-6.4.0.eb b/easybuild/easyconfigs/c/CMake/CMake-3.9.1-GCCcore-6.4.0.eb
new file mode 100644
index 000000000000..3fbbcb5eaaa0
--- /dev/null
+++ b/easybuild/easyconfigs/c/CMake/CMake-3.9.1-GCCcore-6.4.0.eb
@@ -0,0 +1,41 @@
+easyblock = 'ConfigureMake'
+
+name = 'CMake'
+version = '3.9.1'
+
+homepage = 'http://www.cmake.org'
+
+description = """
+ CMake, the cross-platform, open-source build system.  CMake is a family of
+ tools designed to build, test and package software.
+"""
+
+toolchain = {'name': 'GCCcore', 'version': '6.4.0'}
+
+source_urls = ['http://www.cmake.org/files/v%(version_major_minor)s']
+sources = [SOURCELOWER_TAR_GZ]
+checksums = ['d768ee83d217f91bb597b3ca2ac663da7a8603c97e1f1a5184bc01e0ad2b12bb']
+
+configopts = '-- -DCMAKE_USE_OPENSSL=1 -DCMAKE_PREFIX_PATH=$EBROOTNCURSES'
+
+builddependencies = [
+    ('binutils', '2.28'),
+]
+
+dependencies = [
+    ('ncurses', '6.0'),
+    # OS dependency should be preferred if the os version is more recent then this version,
+    # it's nice to have an up to date openssl for security reasons
+    # ('OpenSSL', '1.1.0c'),
+]
+
+osdependencies = [
+    ('openssl-devel', 'libssl-dev', 'libopenssl-devel'),
+]
+
+sanity_check_paths = {
+    'files': ["bin/%s" % x for x in ['ccmake', 'cmake', 'cpack', 'ctest']],
+    'dirs': [],
+}
+
+moduleclass = 'devel'
diff --git a/easybuild/easyconfigs/m/METIS/METIS-5.1.0-GCCcore-6.4.0.eb b/easybuild/easyconfigs/m/METIS/METIS-5.1.0-GCCcore-6.4.0.eb
new file mode 100644
index 000000000000..7ee822127685
--- /dev/null
+++ b/easybuild/easyconfigs/m/METIS/METIS-5.1.0-GCCcore-6.4.0.eb
@@ -0,0 +1,38 @@
+name = 'METIS'
+version = '5.1.0'
+
+homepage = 'http://glaros.dtc.umn.edu/gkhome/metis/metis/overview'
+
+description = """
+ METIS is a set of serial programs for partitioning graphs, partitioning
+ finite element meshes, and producing fill reducing orderings for sparse
+ matrices. The algorithms implemented in METIS are based on the multilevel
+ recursive-bisection, multilevel k-way, and multi-constraint partitioning
+ schemes.
+"""
+
+toolchain = {'name': 'GCCcore', 'version': '6.4.0'}
+toolchainopts = {'pic': True}
+
+source_urls = [
+    'http://glaros.dtc.umn.edu/gkhome/fetch/sw/metis',
+    'http://glaros.dtc.umn.edu/gkhome/fetch/sw/metis/OLD',
+]
+sources = [SOURCELOWER_TAR_GZ]
+
+# We use 32bit for indices and 64bit for content
+patches = ['%(name)s-%(version)s-use-doubles.patch']
+
+checksums = [
+    '76faebe03f6c963127dbb73c13eab58c9a3faeae48779f049066a21c087c5db2',  # source
+    '7e38a3ec8f2b8e3d189239bade5b28c0dd1c564485050109164fa71a6a767c67',  # patch
+]
+
+builddependencies = [
+    ('binutils', '2.28'),
+    ('CMake', '3.9.1'),
+]
+
+configopts = ['', 'shared=1']
+
+moduleclass = 'math'