diff --git a/Compiler/hdf5_serial/1/variants.Darwin b/Compiler/hdf5_serial/1/variants.Darwin
new file mode 100644
index 0000000..eec0f4b
--- /dev/null
+++ b/Compiler/hdf5_serial/1/variants.Darwin
@@ -0,0 +1,52 @@
+hdf5_serial/1.8.12	stable		gcc/4.7.4 
+hdf5_serial/1.8.12	stable		gcc/4.8.3 
+hdf5_serial/1.8.12	deprecated	gcc/4.8.4 
+#hdf5_serial/1.8.12	stable		gcc/4.8.5
+hdf5_serial/1.8.12	deprecated	gcc/4.9.2 
+#hdf5_serial/1.8.12	stable		gcc/4.9.3
+
+hdf5_serial/1.8.14	stable		gcc/4.7.4 
+hdf5_serial/1.8.14	deprecated	gcc/4.8.3 
+hdf5_serial/1.8.14	deprecated	gcc/4.8.4 
+hdf5_serial/1.8.14	stable		gcc/4.8.5 
+hdf5_serial/1.8.14	deprecated	gcc/4.9.2 
+hdf5_serial/1.8.14	stable		gcc/4.9.3
+
+hdf5_serial/1.8.15-patch1 unstable	gcc/5.2.0 
+
+hdf5_serial/1.8.16	stable		gcc/4.7.4 
+hdf5_serial/1.8.16	stable		gcc/4.8.5 
+hdf5_serial/1.8.16	stable		gcc/4.9.3 
+hdf5_serial/1.8.16	stable		gcc/5.3.0 
+hdf5_serial/1.8.16	stable		gcc/6.1.0
+
+hdf5_serial/1.8.17	stable		gcc/4.7.4 
+hdf5_serial/1.8.17	stable		gcc/4.8.5 
+hdf5_serial/1.8.17	stable		gcc/4.9.3 
+hdf5_serial/1.8.17	stable		gcc/4.9.4 
+hdf5_serial/1.8.17	stable		gcc/5.3.0 
+hdf5_serial/1.8.17	stable		gcc/5.4.0 
+hdf5_serial/1.8.17	stable		gcc/6.1.0
+hdf5_serial/1.8.17	stable		gcc/6.2.0
+
+hdf5_serial/1.8.18	stable		gcc/4.8.5 
+hdf5_serial/1.8.18	stable		gcc/4.9.4 
+hdf5_serial/1.8.18	stable		gcc/5.4.0 
+hdf5_serial/1.8.18	stable		gcc/6.2.0
+hdf5_serial/1.8.18	stable		gcc/6.3.0
+hdf5_serial/1.8.18	stable		gcc/7.2.0
+
+hdf5_serial/1.8.19	stable		gcc/4.8.5 
+hdf5_serial/1.8.19	stable		gcc/4.9.4 
+hdf5_serial/1.8.19	stable		gcc/5.4.0 
+hdf5_serial/1.8.19	stable		gcc/6.3.0
+hdf5_serial/1.8.19	stable		gcc/7.2.0
+
+hdf5_serial/1.10.1	stable		gcc/4.8.5 
+hdf5_serial/1.10.1	stable		gcc/4.9.4 
+hdf5_serial/1.10.1	stable		gcc/5.4.0 
+hdf5_serial/1.10.1	stable		gcc/6.3.0
+hdf5_serial/1.10.1	stable		gcc/7.2.0
+hdf5_serial/1.10.1	stable		gcc/7.3.0
+
+hdf5_serial/1.10.1	unstable	clang-macos/9.0.0