diff --git a/Golden_Repo/g/gzip/gzip-1.12-GCCcore-11.3.0.eb b/Golden_Repo/g/gzip/gzip-1.12-GCCcore-11.3.0.eb
new file mode 100644
index 0000000000000000000000000000000000000000..d5a319eea58d4435ac8a4977092f496807232088
--- /dev/null
+++ b/Golden_Repo/g/gzip/gzip-1.12-GCCcore-11.3.0.eb
@@ -0,0 +1,29 @@
+easyblock = 'ConfigureMake'
+
+name = 'gzip'
+version = '1.12'
+
+homepage = 'https://www.gnu.org/software/gzip/'
+description = "gzip (GNU zip) is a popular data compression program as a replacement for compress"
+
+toolchain = {'name': 'GCCcore', 'version': '11.3.0'}
+
+source_urls = [GNU_SOURCE]
+sources = [SOURCE_TAR_GZ]
+patches = ['gzip-1.12_fix-gnulib-strndup-redeclaration.patch']
+checksums = [
+    '5b4fb14d38314e09f2fc8a1c510e7cd540a3ea0e3eb9b0420046b82c3bf41085',  # gzip-1.12.tar.gz
+    # gzip-1.12_fix-gnulib-strndup-redeclaration.patch
+    '9c67e3e88848f7ff1f19f29d87f286bac1cc8f027f7eea9bcaf53883b95032e4',
+]
+
+builddependencies = [('binutils', '2.38')]
+
+sanity_check_paths = {
+    'files': ["bin/gunzip", "bin/gzip", "bin/uncompress"],
+    'dirs': [],
+}
+
+sanity_check_commands = [True, ('gzip', '--version')]
+
+moduleclass = 'tools'
diff --git a/Golden_Repo/g/gzip/gzip-1.12_fix-gnulib-strndup-redeclaration.patch b/Golden_Repo/g/gzip/gzip-1.12_fix-gnulib-strndup-redeclaration.patch
new file mode 100644
index 0000000000000000000000000000000000000000..f8cbf883a925b9d1df3851265ab871c8c1148e68
--- /dev/null
+++ b/Golden_Repo/g/gzip/gzip-1.12_fix-gnulib-strndup-redeclaration.patch
@@ -0,0 +1,27 @@
+Patch taken from:
+https://lists.gnu.org/archive/html/bug-gnulib/2022-04/msg00080.html
+2022-04-30  Bruno Haible  <bruno@clisp.org>
+----------------------------------------------
+diff --git a/lib/string.in.h b/lib/string.in.h
+index b6840fa912..33160b2525 100644
+--- a/lib/string.in.h
++++ b/lib/string.in.h
+@@ -583,7 +583,7 @@ _GL_FUNCDECL_RPL (strndup, char *,
+                   _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE);
+ _GL_CXXALIAS_RPL (strndup, char *, (char const *__s, size_t __n));
+ # else
+-#  if !@HAVE_DECL_STRNDUP@ || __GNUC__ >= 11
++#  if !@HAVE_DECL_STRNDUP@ || (__GNUC__ >= 11 && !defined strndup)
+ _GL_FUNCDECL_SYS (strndup, char *,
+                   (char const *__s, size_t __n)
+                   _GL_ARG_NONNULL ((1))
+@@ -593,7 +593,7 @@ _GL_CXXALIAS_SYS (strndup, char *, (char const *__s, size_t __n));
+ # endif
+ _GL_CXXALIASWARN (strndup);
+ #else
+-# if __GNUC__ >= 11
++# if __GNUC__ >= 11 && !defined strndup
+ /* For -Wmismatched-dealloc: Associate strndup with free or rpl_free.  */
+ _GL_FUNCDECL_SYS (strndup, char *,
+                   (char const *__s, size_t __n)
+
diff --git a/Golden_Repo/z/zstd/zstd-1.5.2-GCCcore-11.3.0.eb b/Golden_Repo/z/zstd/zstd-1.5.2-GCCcore-11.3.0.eb
new file mode 100644
index 0000000000000000000000000000000000000000..643abebdfdb21256c4ce68c904979f36ad60d42e
--- /dev/null
+++ b/Golden_Repo/z/zstd/zstd-1.5.2-GCCcore-11.3.0.eb
@@ -0,0 +1,41 @@
+easyblock = 'ConfigureMake'
+
+name = 'zstd'
+version = '1.5.2'
+
+homepage = 'https://facebook.github.io/zstd'
+description = """Zstandard is a real-time compression algorithm, providing high compression ratios.
+ It offers a very wide range of compression/speed trade-off, while being backed by a very fast decoder.
+ It also offers a special mode for small data, called dictionary compression, and can create dictionaries
+ from any sample set."""
+
+toolchain = {'name': 'GCCcore', 'version': '11.3.0'}
+
+github_account = 'facebook'
+source_urls = [GITHUB_SOURCE]
+sources = ['v%(version)s.tar.gz']
+checksums = ['f7de13462f7a82c29ab865820149e778cbfe01087b3a55b5332707abf9db4a6e']
+
+builddependencies = [
+    ('binutils', '2.38'),
+]
+
+dependencies = [
+    ('zlib', '1.2.12'),
+    ('gzip', '1.12'),
+    ('XZ', '5.2.5'),
+    ('lz4', '1.9.3'),
+]
+
+skipsteps = ['configure']
+
+runtest = 'check'
+
+installopts = "PREFIX=%(installdir)s"
+
+sanity_check_paths = {
+    'files': ["bin/zstd", "lib/libzstd.%s" % SHLIB_EXT, "include/zstd.h"],
+    'dirs': ["lib/pkgconfig"]
+}
+
+moduleclass = 'lib'