diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..f6a3a77
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/*.tar.gz
diff --git a/sources b/sources
new file mode 100644
index 0000000..4f37edb
--- /dev/null
+++ b/sources
@@ -0,0 +1 @@
+SHA512 (xxhash-0.6.3.tar.gz) = 5b11009ecf142725c642be55e9072792709bd40d8674f30afdc13f9b9fd6936ea69e683c7b9df212b5126f9ba3925969fc0b65bb5518506b501bb339d3a29372
diff --git a/xxhash-lib.patch b/xxhash-lib.patch
new file mode 100644
index 0000000..8942623
--- /dev/null
+++ b/xxhash-lib.patch
@@ -0,0 +1,178 @@
+From bc32865a237f15cd4aaaa010b4f6a4f2fae71367 Mon Sep 17 00:00:00 2001
+From: Yann Collet <cyan@fb.com>
+Date: Thu, 14 Sep 2017 09:44:34 -0700
+Subject: [PATCH] make : added lib target
+
+make install now also installs static and dynamic libraries
+---
+ .gitignore |  6 ++++
+ Makefile   | 92 +++++++++++++++++++++++++++++++++++++++++++++++++++-----------
+ 2 files changed, 82 insertions(+), 16 deletions(-)
+
+diff --git a/.gitignore b/.gitignore
+index 6e41348..36639c6 100644
+--- a/.gitignore
++++ b/.gitignore
+@@ -1,3 +1,9 @@
++# objects
++*.o
++
++# libraries
++libxxhash.*
++
+ # Executables
+ xxh32sum
+ xxh64sum
+diff --git a/Makefile b/Makefile
+index f1b4238..98f6048 100644
+--- a/Makefile
++++ b/Makefile
+@@ -25,9 +25,12 @@
+ # ################################################################
+ 
+ # Version numbers
+-LIBVER_MAJOR:=`sed -n '/define XXH_VERSION_MAJOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < xxhash.h`
+-LIBVER_MINOR:=`sed -n '/define XXH_VERSION_MINOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < xxhash.h`
+-LIBVER_PATCH:=`sed -n '/define XXH_VERSION_RELEASE/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < xxhash.h`
++LIBVER_MAJOR_SCRIPT:=`sed -n '/define XXH_VERSION_MAJOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < xxhash.h`
++LIBVER_MINOR_SCRIPT:=`sed -n '/define XXH_VERSION_MINOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < xxhash.h`
++LIBVER_PATCH_SCRIPT:=`sed -n '/define XXH_VERSION_RELEASE/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < xxhash.h`
++LIBVER_MAJOR := $(shell echo $(LIBVER_MAJOR_SCRIPT))
++LIBVER_MINOR := $(shell echo $(LIBVER_MINOR_SCRIPT))
++LIBVER_PATCH := $(shell echo $(LIBVER_PATCH_SCRIPT))
+ LIBVER := $(LIBVER_MAJOR).$(LIBVER_MINOR).$(LIBVER_PATCH)
+ 
+ CFLAGS ?= -O3
+@@ -46,21 +49,61 @@ else
+ EXT =
+ endif
+ 
++# OS X linker doesn't support -soname, and use different extension
++# see : https://developer.apple.com/library/mac/documentation/DeveloperTools/Conceptual/DynamicLibraries/100-Articles/DynamicLibraryDesignGuidelines.html
++ifeq ($(shell uname), Darwin)
++	SHARED_EXT = dylib
++	SHARED_EXT_MAJOR = $(LIBVER_MAJOR).$(SHARED_EXT)
++	SHARED_EXT_VER = $(LIBVER).$(SHARED_EXT)
++	SONAME_FLAGS = -install_name $(LIBDIR)/libxxhash.$(SHARED_EXT_MAJOR) -compatibility_version $(LIBVER_MAJOR) -current_version $(LIBVER)
++else
++	SONAME_FLAGS = -Wl,-soname=libxxhash.$(SHARED_EXT).$(LIBVER_MAJOR)
++	SHARED_EXT = so
++	SHARED_EXT_MAJOR = $(SHARED_EXT).$(LIBVER_MAJOR)
++	SHARED_EXT_VER = $(SHARED_EXT).$(LIBVER)
++endif
++
++LIBXXH = libxxhash.$(SHARED_EXT_VER)
++
++
+ .PHONY: default
+-default: xxhsum
++default: lib xxhsum
+ 
+ .PHONY: all
+-all: xxhsum xxhsum32 xxhsum_inlinedXXH
++all: lib xxhsum xxhsum32 xxhsum_inlinedXXH
+ 
+ xxhsum32: CFLAGS += -m32
+ xxhsum xxhsum32: xxhash.c xxhsum.c
+-	$(CC)      $(FLAGS) $^ -o $@$(EXT)
++	$(CC) $(FLAGS) $^ -o $@$(EXT)
+ 	ln -sf $@ xxh32sum
+ 	ln -sf $@ xxh64sum
+ 
+ xxhsum_inlinedXXH: xxhsum.c
+ 	$(CC) $(FLAGS) -DXXH_PRIVATE_API $^ -o $@$(EXT)
+ 
++
++# library
++
++libxxhash.a: ARFLAGS = rcs
++libxxhash.a: xxhash.o
++	@echo compiling static library
++	@$(AR) $(ARFLAGS) $@ $^
++
++$(LIBXXH): LDFLAGS += -shared -fPIC
++$(LIBXXH): xxhash.c
++	@echo compiling dynamic library $(LIBVER)
++	@$(CC) $(FLAGS) $^ $(LDFLAGS) $(SONAME_FLAGS) -o $@
++	@echo creating versioned links
++	@ln -sf $@ libxxhash.$(SHARED_EXT_MAJOR)
++	@ln -sf $@ libxxhash.$(SHARED_EXT)
++
++libxxhash : $(LIBXXH)
++
++lib: libxxhash.a libxxhash
++
++
++# tests
++
+ .PHONY: test
+ test: xxhsum
+ 	# stdin
+@@ -154,7 +197,8 @@ test-all: clean all namespaceTest test test32 test-xxhsum-c clean-xxhsum-c \
+ 	armtest clangtest gpptest c90test test-mem usan staticAnalyze
+ 
+ clean: clean-xxhsum-c
+-	@$(RM) -f core *.o xxhsum$(EXT) xxhsum32$(EXT) xxhsum_inlinedXXH$(EXT) xxh32sum xxh64sum
++	@$(RM) core *.o libxxhash.*
++	@$(RM) xxhsum$(EXT) xxhsum32$(EXT) xxhsum_inlinedXXH$(EXT) xxh32sum xxh64sum
+ 	@echo cleaning completed
+ 
+ 
+@@ -170,6 +214,10 @@ DESTDIR     ?=
+ prefix      ?= /usr/local
+ PREFIX      ?= $(prefix)
+ exec_prefix ?= $(PREFIX)
++libdir      ?= $(exec_prefix)/lib
++LIBDIR      ?= $(libdir)
++includedir  ?= $(PREFIX)/include
++INCLUDEDIR  ?= $(includedir)
+ bindir      ?= $(exec_prefix)/bin
+ BINDIR      ?= $(bindir)
+ datarootdir ?= $(PREFIX)/share
+@@ -193,8 +241,15 @@ INSTALL_DATA    ?= $(INSTALL) -m 644
+ 
+ 
+ .PHONY: install
+-install: xxhsum
+-	@echo Installing binaries
++install: lib xxhsum
++	@echo Installing libxxhash
++	@$(INSTALL_DATA) libxxhash.a $(DESTDIR)$(LIBDIR)
++	@$(INSTALL_PROGRAM) $(LIBXXH) $(DESTDIR)$(LIBDIR)
++	@ln -sf $(LIBXXH) $(DESTDIR)$(LIBDIR)/libxxhash.$(SHARED_EXT_MAJOR)
++	@ln -sf $(LIBXXH) $(DESTDIR)$(LIBDIR)/libxxhash.$(SHARED_EXT)
++	@$(INSTALL) -d -m 755 $(DESTDIR)$(INCLUDEDIR)   # includes
++	@$(INSTALL_DATA) xxhash.h $(DESTDIR)$(INCLUDEDIR)
++	@echo Installing xxhsum
+ 	@$(INSTALL) -d -m 755 $(DESTDIR)$(BINDIR)/ $(DESTDIR)$(MANDIR)/
+ 	@$(INSTALL_PROGRAM) xxhsum $(DESTDIR)$(BINDIR)/xxhsum
+ 	@ln -sf xxhsum $(DESTDIR)$(BINDIR)/xxh32sum
+@@ -203,16 +258,21 @@ install: xxhsum
+ 	@$(INSTALL_DATA) xxhsum.1 $(DESTDIR)$(MANDIR)/xxhsum.1
+ 	@ln -sf xxhsum.1 $(DESTDIR)$(MANDIR)/xxh32sum.1
+ 	@ln -sf xxhsum.1 $(DESTDIR)$(MANDIR)/xxh64sum.1
+-	@echo xxhsum installation completed
++	@echo xxhash installation completed
+ 
+ .PHONY: uninstall
+ uninstall:
+-	$(RM) $(DESTDIR)$(BINDIR)/xxh32sum
+-	$(RM) $(DESTDIR)$(BINDIR)/xxh64sum
+-	$(RM) $(DESTDIR)$(BINDIR)/xxhsum
+-	$(RM) $(DESTDIR)$(MANDIR)/xxh32sum.1
+-	$(RM) $(DESTDIR)$(MANDIR)/xxh64sum.1
+-	$(RM) $(DESTDIR)$(MANDIR)/xxhsum.1
++	@$(RM) $(DESTDIR)$(LIBDIR)/libxxhash.a
++	@$(RM) $(DESTDIR)$(LIBDIR)/libxxhash.$(SHARED_EXT)
++	@$(RM) $(DESTDIR)$(LIBDIR)/libxxhash.$(SHARED_EXT_MAJOR)
++	@$(RM) $(DESTDIR)$(LIBDIR)/$(LIBXXH)
++	@$(RM) $(DESTDIR)$(INCLUDEDIR)/xxhash.h
++	@$(RM) $(DESTDIR)$(BINDIR)/xxh32sum
++	@$(RM) $(DESTDIR)$(BINDIR)/xxh64sum
++	@$(RM) $(DESTDIR)$(BINDIR)/xxhsum
++	@$(RM) $(DESTDIR)$(MANDIR)/xxh32sum.1
++	@$(RM) $(DESTDIR)$(MANDIR)/xxh64sum.1
++	@$(RM) $(DESTDIR)$(MANDIR)/xxhsum.1
+ 	@echo xxhsum successfully uninstalled
+ 
+ endif
diff --git a/xxhash-libdir.patch b/xxhash-libdir.patch
new file mode 100644
index 0000000..ed0bc12
--- /dev/null
+++ b/xxhash-libdir.patch
@@ -0,0 +1,24 @@
+From 7080470ed35aa1450c2b3b52320778e41bc7d3a3 Mon Sep 17 00:00:00 2001
+From: Mattias Ellert <mattias.ellert@physics.uu.se>
+Date: Wed, 18 Oct 2017 10:25:54 +0200
+Subject: [PATCH] Create library directory before installing files in it
+
+---
+ Makefile | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/Makefile b/Makefile
+index 845e892..c352b51 100644
+--- a/Makefile
++++ b/Makefile
+@@ -248,6 +248,7 @@ INSTALL_DATA    ?= $(INSTALL) -m 644
+ .PHONY: install
+ install: lib xxhsum
+ 	@echo Installing libxxhash
++	@$(INSTALL) -d -m 755 $(DESTDIR)$(LIBDIR)
+ 	@$(INSTALL_DATA) libxxhash.a $(DESTDIR)$(LIBDIR)
+ 	@$(INSTALL_PROGRAM) $(LIBXXH) $(DESTDIR)$(LIBDIR)
+ 	@ln -sf $(LIBXXH) $(DESTDIR)$(LIBDIR)/libxxhash.$(SHARED_EXT_MAJOR)
+-- 
+2.13.6
+
diff --git a/xxhash.spec b/xxhash.spec
new file mode 100644
index 0000000..417d68d
--- /dev/null
+++ b/xxhash.spec
@@ -0,0 +1,82 @@
+Name:		xxhash
+Version:	0.6.3
+Release:	2%{?dist}
+Summary:	Extremely fast hash algorithm
+
+#		The source for the library (xxhash.c and xxhash.h) is BSD
+#		The source for the command line tool (xxhsum.c) is GPLv2+
+License:	BSD and GPLv2+
+URL:		http://www.xxhash.com/
+Source0:	https://github.com/Cyan4973/xxHash/archive/v%{version}/%{name}-%{version}.tar.gz
+#		Build library - backport from upstream git (commit bc32865)
+Patch0:		%{name}-lib.patch
+#		Create libdir - backport from upstream git (commit 7080470)
+Patch1:		%{name}-libdir.patch
+
+%description
+xxHash is an Extremely fast Hash algorithm, running at RAM speed
+limits. It successfully completes the SMHasher test suite which
+evaluates collision, dispersion and randomness qualities of hash
+functions. Code is highly portable, and hashes are identical on all
+platforms (little / big endian).
+
+%package libs
+Summary:	Extremely fast hash algorithm - library
+License:	BSD
+
+%description libs
+xxHash is an Extremely fast Hash algorithm, running at RAM speed
+limits. It successfully completes the SMHasher test suite which
+evaluates collision, dispersion and randomness qualities of hash
+functions. Code is highly portable, and hashes are identical on all
+platforms (little / big endian).
+
+%package devel
+Summary:	Extremely fast hash algorithm - development files
+License:	BSD
+Requires:	%{name}-libs%{?_isa} = %{version}-%{release}
+
+%description devel
+Development files for the xxhash library
+
+%prep
+%setup -q -n xxHash-%{version}
+%patch0 -p1
+%patch1 -p1
+
+%build
+make %{?_smp_mflags} CFLAGS="%{optflags}" MOREFLAGS="%{?__global_ldflags}"
+
+%install
+make install DESTDIR=%{buildroot} PREFIX=%{_prefix} LIBDIR=%{_libdir}
+rm %{buildroot}/%{_libdir}/libxxhash.a
+
+%check
+make test
+make test-xxhsum-c
+
+%post libs -p /sbin/ldconfig
+%postun libs -p /sbin/ldconfig
+
+%files
+%{_bindir}/xxh*sum
+%{_mandir}/man1/xxh*sum.1*
+%license LICENSE
+%doc README.md
+
+%files libs
+%{_libdir}/libxxhash.so.*
+%license LICENSE
+%doc README.md
+
+%files devel
+%{_includedir}/xxhash.h
+%{_libdir}/libxxhash.so
+
+%changelog
+* Thu Oct 19 2017 Mattias Ellert <mattias.ellert@physics.uu.se> - 0.6.3-2
+- Correct License tag (command line tool is GPLv2+)
+- Adjust Source tag to get a more descriptive tarfile name
+
+* Wed Oct 18 2017 Mattias Ellert <mattias.ellert@physics.uu.se> - 0.6.3-1
+- Initial packaging