diff --git a/Golden_Repo/e/expat/expat-2.2.9-GCCcore-10.3.0.eb b/Golden_Repo/e/expat/expat-2.2.9-GCCcore-10.3.0.eb
new file mode 100644
index 0000000000000000000000000000000000000000..80459842bfa559098f41d172018bea65cc3a51db
--- /dev/null
+++ b/Golden_Repo/e/expat/expat-2.2.9-GCCcore-10.3.0.eb
@@ -0,0 +1,36 @@
+easyblock = 'ConfigureMake'
+
+name = 'expat'
+version = '2.2.9'
+
+homepage = 'https://libexpat.github.io'
+
+description = """
+Expat is an XML parser library written in C. It is a stream-oriented parser
+in which an application registers handlers for things the parser might find
+in the XML document (like start tags)
+"""
+
+site_contacts = 'sc@fz-juelich.de'
+
+toolchain = {'name': 'GCCcore', 'version': '10.3.0'}
+toolchainopts = {'pic': True}
+
+source_urls = ['https://github.com/libexpat/libexpat/releases/download/R_%s/' %
+               version.replace('.', '_')]
+sources = [SOURCE_TAR_BZ2]
+checksums = ['f1063084dc4302a427dabcca499c8312b3a32a29b7d2506653ecc8f950a9a237']
+
+builddependencies = [('binutils', '2.36.1')]
+
+# Since expat 2.2.6, docbook2X is needed to produce manpage of xmlwf.
+# Docbook2X needs XML-Parser and XML-Parser needs expat.
+# -> circular dependency. "--without-docbook" breaks this circle.
+configopts = ['--without-docbook']
+
+sanity_check_paths = {
+    'files': ['include/expat.h', 'lib/libexpat.a', 'lib/libexpat.%s' % SHLIB_EXT],
+    'dirs': [],
+}
+
+moduleclass = 'tools'
diff --git a/Golden_Repo/l/libreadline/libreadline-8.1-GCCcore-10.3.0.eb b/Golden_Repo/l/libreadline/libreadline-8.1-GCCcore-10.3.0.eb
new file mode 100644
index 0000000000000000000000000000000000000000..dc67454fa645f394195c2e6dc295cbdb9796c31a
--- /dev/null
+++ b/Golden_Repo/l/libreadline/libreadline-8.1-GCCcore-10.3.0.eb
@@ -0,0 +1,43 @@
+easyblock = 'ConfigureMake'
+
+name = 'libreadline'
+version = '8.1'
+
+homepage = 'https://tiswww.case.edu/php/chet/readline/rltop.html'
+description = """
+The GNU Readline library provides a set of functions for use by applications
+that allow users to edit command lines as they are typed in. Both Emacs and
+vi editing modes are available. The Readline library includes additional
+functions to maintain a list of previously-entered command lines, to recall
+and perhaps reedit those lines, and perform csh-like history expansion on
+previous commands.
+"""
+
+site_contacts = 'sc@fz-juelich.de'
+
+toolchain = {'name': 'GCCcore', 'version': '10.3.0'}
+toolchainopts = {'pic': True}
+
+source_urls = ['https://ftp.gnu.org/gnu/readline']
+sources = ['readline-%(version)s.tar.gz']
+checksums = ['f8ceb4ee131e3232226a17f51b164afc46cd0b9e6cef344be87c65962cb82b02']
+
+builddependencies = [
+    ('binutils', '2.36.1'),
+]
+dependencies = [
+    ('ncurses', '6.2'),
+]
+
+# for the termcap symbols, use EB ncurses
+buildopts = "SHLIB_LIBS='-lncurses'"
+
+sanity_check_paths = {
+    'files': ['lib/libreadline.a', 'lib/libhistory.a'] +
+             ['include/readline/%s' % x
+              for x in ['chardefs.h', 'history.h', 'keymaps.h', 'readline.h',
+                        'rlconf.h', 'rlstdc.h', 'rltypedefs.h', 'tilde.h']],
+    'dirs': [],
+}
+
+moduleclass = 'lib'
diff --git a/Golden_Repo/l/libtool/libtool-2.4.6-GCCcore-10.3.0.eb b/Golden_Repo/l/libtool/libtool-2.4.6-GCCcore-10.3.0.eb
new file mode 100644
index 0000000000000000000000000000000000000000..66b8afb6e15b2d7f87f5f0d85477d7b65292fe4d
--- /dev/null
+++ b/Golden_Repo/l/libtool/libtool-2.4.6-GCCcore-10.3.0.eb
@@ -0,0 +1,34 @@
+easyblock = 'ConfigureMake'
+
+name = 'libtool'
+version = '2.4.6'
+
+homepage = 'https://www.gnu.org/software/libtool'
+
+description = """
+GNU libtool is a generic library support script. Libtool hides the complexity
+of using shared libraries behind a consistent, portable interface.
+"""
+
+site_contacts = 'sc@fz-juelich.de'
+
+toolchain = {'name': 'GCCcore', 'version': '10.3.0'}
+
+source_urls = [GNU_SOURCE]
+sources = [SOURCELOWER_TAR_GZ]
+checksums = ['e3bd4d5d3d025a36c21dd6af7ea818a2afcd4dfc1ea5a17b39d7854bcd0c06e3']
+
+builddependencies = [
+    ('binutils', '2.36.1'),
+]
+
+dependencies = [
+    ('M4', '1.4.18'),
+]
+
+sanity_check_paths = {
+    'files': ['bin/libtool', 'bin/libtoolize', 'lib/libltdl.%s' % SHLIB_EXT],
+    'dirs': ['include/libltdl', 'share/libtool/loaders', 'share/man/man1'],
+}
+
+moduleclass = 'lib'