diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..1b5d326
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+SOURCES/crc32fast-1.3.2.crate
diff --git a/.rust-crc32fast.metadata b/.rust-crc32fast.metadata
index e69de29..910feb0 100644
--- a/.rust-crc32fast.metadata
+++ b/.rust-crc32fast.metadata
@@ -0,0 +1 @@
+d5f02b298afcbffc3755b7435d1bc41a9a5bac71  SOURCES/crc32fast-1.3.2.crate
diff --git a/SOURCES/_constraints b/SOURCES/_constraints
new file mode 100644
index 0000000..e01d525
--- /dev/null
+++ b/SOURCES/_constraints
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<constraints>
+  <overwrite>
+    <conditions>
+      <arch>x86_64</arch>
+    </conditions>
+    <hardware>
+      <cpu>
+        <flag>pclmulqdq</flag>
+        <flag>sse4_1</flag>
+      </cpu>
+    </hardware>
+  </overwrite>
+</constraints>
diff --git a/SOURCES/crc32fast-1.3.2.crate b/SOURCES/crc32fast-1.3.2.crate
deleted file mode 100644
index 093c34f..0000000
Binary files a/SOURCES/crc32fast-1.3.2.crate and /dev/null differ