diff --git a/c/CubeGUI/CubeGUI-4.5-GCCcore-8.3.0.eb b/c/CubeGUI/CubeGUI-4.5-GCCcore-8.3.0.eb
new file mode 100644
index 00000000..be93f6bb
--- /dev/null
+++ b/c/CubeGUI/CubeGUI-4.5-GCCcore-8.3.0.eb
@@ -0,0 +1,39 @@
+# IT4Innovations 2020
+# LK
+
+easyblock = 'EB_Score_minus_P'
+
+name = 'CubeGUI'
+version = '4.5'
+
+homepage = 'http://www.scalasca.org/software/cube-4.x/download.html'
+description = """Cube, which is used as performance report explorer for Scalasca and
+ Score-P, is a generic tool for displaying a multi-dimensional performance space
+ consisting of the dimensions (i) performance metric, (ii) call path, and (iii) system
+ resource. Each dimension can be represented as a tree, where non-leaf nodes of the tree
+ can be collapsed or expanded to achieve the desired level of granularity."""
+
+toolchain = {'name': 'GCCcore', 'version': '8.3.0'}
+toolchainopts = {'optarch': False, 'pic': True}
+
+source_urls = ['http://apps.fz-juelich.de/scalasca/releases/cube/4.5/dist/']
+sources = ['cubegui-%(version)s.tar.gz']
+
+builddependencies = [
+    ('binutils', '2.32'),
+    ('CubeLib', '4.5')
+]
+
+dependencies = [
+    ('Qt5', '5.13.1'),
+]
+
+config = '--enable-platform-mic --with-qt-specs=linux-icc-64 --with-frontend-local_compiler-suite=intel'
+
+sanity_check_paths = {
+    'files': [],
+    'dirs': ['bin', 'include', 'lib'],
+}
+
+
+moduleclass = 'perf'
diff --git a/c/CubeLib/CubeLib-4.5-GCCcore-8.3.0.eb b/c/CubeLib/CubeLib-4.5-GCCcore-8.3.0.eb
new file mode 100644
index 00000000..94056f36
--- /dev/null
+++ b/c/CubeLib/CubeLib-4.5-GCCcore-8.3.0.eb
@@ -0,0 +1,39 @@
+# IT4Innovations 2020
+# LK
+
+easyblock = 'EB_Score_minus_P'
+
+name = 'CubeLib'
+version = '4.5'
+
+homepage = 'http://www.scalasca.org/software/cube-4.x/download.html'
+description = """Cube, which is used as performance report explorer for Scalasca and
+ Score-P, is a generic tool for displaying a multi-dimensional performance space
+ consisting of the dimensions (i) performance metric, (ii) call path, and (iii) system
+ resource. Each dimension can be represented as a tree, where non-leaf nodes of the tree
+ can be collapsed or expanded to achieve the desired level of granularity."""
+
+toolchain = {'name': 'GCCcore', 'version': '8.3.0'}
+toolchainopts = {'optarch': False, 'pic': True}
+
+source_urls = ['http://apps.fz-juelich.de/scalasca/releases/cube/4.5/dist/']
+sources = ['cubelib-%(version)s.tar.gz']
+
+builddependencies = [
+    # use same binutils version that was used when building GCCcore
+    ('binutils', '2.32'),
+    ('pkg-config', '0.29.2'),
+]
+
+dependencies = [
+    ('zlib', '1.2.11'),
+]
+
+configopts = '--enable-shared'
+
+sanity_check_paths = {
+    'files': [],
+    'dirs': ['bin', 'include', 'lib'],
+}
+
+moduleclass = 'perf'