diff --git a/easybuild/easyconfigs/e/expat/expat-2.7.3-GCCcore-15.2.0.eb b/easybuild/easyconfigs/e/expat/expat-2.7.3-GCCcore-15.2.0.eb
new file mode 100644
index 000000000000..1225f2d56e7f
--- /dev/null
+++ b/easybuild/easyconfigs/e/expat/expat-2.7.3-GCCcore-15.2.0.eb
@@ -0,0 +1,31 @@
+easyblock = 'ConfigureMake'
+
+name = 'expat'
+version = '2.7.3'
+
+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)."""
+
+toolchain = {'name': 'GCCcore', 'version': '15.2.0'}
+toolchainopts = {'pic': True}
+
+source_urls = ['https://github.com/libexpat/libexpat/releases/download/R_%s/' % version.replace('.', '_')]
+sources = [SOURCE_TAR_BZ2]
+checksums = ['59c31441fec9a66205307749eccfee551055f2d792f329f18d97099e919a3b2f']
+
+builddependencies = [('binutils', '2.45')]
+
+# 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/easybuild/easyconfigs/l/libffi/libffi-3.5.2-GCCcore-15.2.0.eb b/easybuild/easyconfigs/l/libffi/libffi-3.5.2-GCCcore-15.2.0.eb
new file mode 100644
index 000000000000..fd1e76ad0351
--- /dev/null
+++ b/easybuild/easyconfigs/l/libffi/libffi-3.5.2-GCCcore-15.2.0.eb
@@ -0,0 +1,29 @@
+easyblock = 'ConfigureMake'
+
+name = 'libffi'
+version = '3.5.2'
+
+homepage = 'https://sourceware.org/libffi/'
+description = """The libffi library provides a portable, high level programming interface to
+ various calling conventions. This allows a programmer to call any function
+ specified by a call interface description at run-time."""
+
+toolchain = {'name': 'GCCcore', 'version': '15.2.0'}
+toolchainopts = {'pic': True}
+
+source_urls = ['https://github.com/libffi/libffi/releases/download/v%(version)s/']
+sources = [SOURCELOWER_TAR_GZ]
+checksums = ['f3a3082a23b37c293a4fcd1053147b371f2ff91fa7ea1b2a52e335676bac82dc']
+
+builddependencies = [
+    ('binutils', '2.45'),
+]
+
+configopts = '--disable-exec-static-tramp '
+
+sanity_check_paths = {
+    'files': ['lib/libffi.a', 'lib/libffi.%s' % SHLIB_EXT],
+    'dirs': ['include', 'share'],
+}
+
+moduleclass = 'lib'
diff --git a/easybuild/easyconfigs/l/libiconv/libiconv-1.18-GCCcore-15.2.0.eb b/easybuild/easyconfigs/l/libiconv/libiconv-1.18-GCCcore-15.2.0.eb
new file mode 100644
index 000000000000..773051b7598c
--- /dev/null
+++ b/easybuild/easyconfigs/l/libiconv/libiconv-1.18-GCCcore-15.2.0.eb
@@ -0,0 +1,23 @@
+easyblock = 'ConfigureMake'
+
+name = 'libiconv'
+version = '1.18'
+
+homepage = 'https://www.gnu.org/software/libiconv'
+description = "Libiconv converts from one character encoding to another through Unicode conversion"
+
+toolchain = {'name': 'GCCcore', 'version': '15.2.0'}
+
+source_urls = [GNU_SOURCE]
+sources = [SOURCE_TAR_GZ]
+checksums = ['3b08f5f4f9b4eb82f151a7040bfd6fe6c6fb922efe4b1659c66ea933276965e8']
+
+builddependencies = [('binutils', '2.45')]
+
+sanity_check_paths = {
+    'files': ['bin/iconv', 'include/iconv.h', 'include/libcharset.h', 'include/localcharset.h',
+              'lib/libcharset.a', 'lib/libcharset.%s' % SHLIB_EXT, 'lib/libiconv.%s' % SHLIB_EXT],
+    'dirs': ['share'],
+}
+
+moduleclass = 'lib'
diff --git a/easybuild/easyconfigs/l/libidn2/libidn2-2.3.8-GCCcore-15.2.0.eb b/easybuild/easyconfigs/l/libidn2/libidn2-2.3.8-GCCcore-15.2.0.eb
new file mode 100644
index 000000000000..1419c2244772
--- /dev/null
+++ b/easybuild/easyconfigs/l/libidn2/libidn2-2.3.8-GCCcore-15.2.0.eb
@@ -0,0 +1,26 @@
+easyblock = 'ConfigureMake'
+
+name = 'libidn2'
+version = '2.3.8'
+
+homepage = 'http://www.gnu.org/software/%(name)s'
+description = "Libidn2 implements the revised algorithm for internationalized domain names called IDNA2008/TR46."
+
+toolchain = {'name': 'GCCcore', 'version': '15.2.0'}
+
+source_urls = ['https://ftpmirror.gnu.org/gnu/libidn/']
+sources = [SOURCELOWER_TAR_GZ]
+checksums = ['f557911bf6171621e1f72ff35f5b1825bb35b52ed45325dcdee931e5d3c0787a']
+
+builddependencies = [
+    ('binutils', '2.45'),
+]
+
+sanity_check_paths = {
+    'files': ['bin/idn2', 'lib/%s.%s' % (name, SHLIB_EXT)],
+    'dirs': ['include'],
+}
+
+sanity_check_commands = ['idn2 --help']
+
+moduleclass = 'lib'
diff --git a/easybuild/easyconfigs/l/lz4/lz4-1.10.0-GCCcore-15.2.0.eb b/easybuild/easyconfigs/l/lz4/lz4-1.10.0-GCCcore-15.2.0.eb
new file mode 100644
index 000000000000..f30a214ee60e
--- /dev/null
+++ b/easybuild/easyconfigs/l/lz4/lz4-1.10.0-GCCcore-15.2.0.eb
@@ -0,0 +1,30 @@
+easyblock = 'ConfigureMake'
+
+name = 'lz4'
+version = '1.10.0'
+
+homepage = 'https://lz4.github.io/lz4/'
+description = """LZ4 is lossless compression algorithm, providing compression speed at 400 MB/s per core.
+ It features an extremely fast decoder, with speed in multiple GB/s per core."""
+
+toolchain = {'name': 'GCCcore', 'version': '15.2.0'}
+
+github_account = '%(name)s'
+source_urls = [GITHUB_SOURCE]
+sources = ['v%(version)s.tar.gz']
+checksums = ['537512904744b35e232912055ccf8ec66d768639ff3abe5788d90d792ec5f48b']
+
+builddependencies = [('binutils', '2.45')]
+
+skipsteps = ['configure']
+
+installopts = "PREFIX=%(installdir)s"
+
+runtest = 'check'
+
+sanity_check_paths = {
+    'files': ["bin/lz4", "lib/liblz4.%s" % SHLIB_EXT, "include/lz4.h"],
+    'dirs': ["lib/pkgconfig"]
+}
+
+moduleclass = 'lib'