diff --git a/cmake-libarchive.patch b/cmake-libarchive.patch
new file mode 100644
index 0000000..67eb9b4
--- /dev/null
+++ b/cmake-libarchive.patch
@@ -0,0 +1,36 @@
+From 92c47b8786fdd41f4b9d882386b7acf585f1c00a Mon Sep 17 00:00:00 2001
+From: Orion Poplawski <orion@cora.nwra.com>
+Date: Fri, 3 Jun 2016 09:37:03 -0600
+Subject: [PATCH] Support libarchive 3.2 version string format
+
+---
+ Modules/FindLibArchive.cmake | 9 +++++----
+ 1 file changed, 5 insertions(+), 4 deletions(-)
+
+diff --git a/Modules/FindLibArchive.cmake b/Modules/FindLibArchive.cmake
+index 471a4f1..dd93041 100644
+--- a/Modules/FindLibArchive.cmake
++++ b/Modules/FindLibArchive.cmake
+@@ -42,14 +42,15 @@ mark_as_advanced(LibArchive_INCLUDE_DIR LibArchive_LIBRARY)
+ 
+ # Extract the version number from the header.
+ if(LibArchive_INCLUDE_DIR AND EXISTS "${LibArchive_INCLUDE_DIR}/archive.h")
+-  # The version string appears in one of two known formats in the header:
++  # The version string appears in one of three known formats in the header:
+   #  #define ARCHIVE_LIBRARY_VERSION "libarchive 2.4.12"
+   #  #define ARCHIVE_VERSION_STRING "libarchive 2.8.4"
+-  # Match either format.
+-  set(_LibArchive_VERSION_REGEX "^#define[ \t]+ARCHIVE[_A-Z]+VERSION[_A-Z]*[ \t]+\"libarchive +([0-9]+)\\.([0-9]+)\\.([0-9]+)[^\"]*\".*$")
++  #  #define ARCHIVE_VERSION_ONLY_STRING "3.2.0"
++  # Match any format.
++  set(_LibArchive_VERSION_REGEX "^#define[ \t]+ARCHIVE[_A-Z]+VERSION[_A-Z]*[ \t]+\"(libarchive +)?([0-9]+)\\.([0-9]+)\\.([0-9]+)[^\"]*\".*$")
+   file(STRINGS "${LibArchive_INCLUDE_DIR}/archive.h" _LibArchive_VERSION_STRING LIMIT_COUNT 1 REGEX "${_LibArchive_VERSION_REGEX}")
+   if(_LibArchive_VERSION_STRING)
+-    string(REGEX REPLACE "${_LibArchive_VERSION_REGEX}" "\\1.\\2.\\3" LibArchive_VERSION "${_LibArchive_VERSION_STRING}")
++    string(REGEX REPLACE "${_LibArchive_VERSION_REGEX}" "\\2.\\3.\\4" LibArchive_VERSION "${_LibArchive_VERSION_STRING}")
+   endif()
+   unset(_LibArchive_VERSION_REGEX)
+   unset(_LibArchive_VERSION_STRING)
+-- 
+1.8.3.1
+