diff -Naur src/blosc/CMakeLists.txt external_blosc/blosc/CMakeLists.txt
--- src/blosc/CMakeLists.txt	2016-02-03 10:26:28 -0700
+++ external_blosc/blosc/CMakeLists.txt	2017-03-03 09:03:31 -0700
@@ -61,6 +61,8 @@
         set(SOURCES ${SOURCES} win32/pthread.c)
     else(NOT Threads_FOUND)
         set(LIBS ${LIBS} ${CMAKE_THREAD_LIBS_INIT})
+        set(LIBS ${LIBS} ${PTHREAD_LIBS})
+        include_directories( ${PTHREAD_INCLUDE_DIR} )
     endif(NOT Threads_FOUND)
 else(WIN32)
     find_package(Threads REQUIRED)
diff -Naur src/CMakeLists.txt external_blosc/CMakeLists.txt
--- src/CMakeLists.txt	2016-02-03 10:26:28 -0700
+++ external_blosc/CMakeLists.txt	2017-03-03 09:03:31 -0700
@@ -17,8 +17,8 @@
 #       do not include support for the Snappy library
 #   DEACTIVATE_ZLIB: default OFF
 #       do not include support for the Zlib library
-#   PREFER_EXTERNAL_COMPLIBS: default ON
-#       when found, use the installed compression libs instead of included sources
+#   PREFER_EXTERNAL_ZLIB: default ON
+#       when found, use the installed zlib instead of included sources
 #   TEST_INCLUDE_BENCH_SINGLE_1: default ON
 #       add a test that runs the benchmark program passing "single" with 1 thread
 #       as first parameter
@@ -80,29 +80,23 @@
     "Do not include support for the SNAPPY library." OFF)
 option(DEACTIVATE_ZLIB
     "Do not include support for the ZLIB library." OFF)
-option(PREFER_EXTERNAL_COMPLIBS
-    "When found, use the installed compression libs instead of included sources." ON)
+option(PREFER_EXTERNAL_ZLIB
+    "When found, use the installed zlib instead of included sources." ON)
 
 set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
 
-if(NOT PREFER_EXTERNAL_COMPLIBS)
+if(NOT PREFER_EXTERNAL_ZLIB)
     message(STATUS "Finding external libraries disabled.  Using internal sources.")
-endif(NOT PREFER_EXTERNAL_COMPLIBS)
+endif(NOT PREFER_EXTERNAL_ZLIB)
 
 
 if(NOT DEACTIVATE_LZ4)
-    if(PREFER_EXTERNAL_COMPLIBS)
-        find_package(LZ4)
-    endif(PREFER_EXTERNAL_COMPLIBS)
     # HAVE_LZ4 will be set to true because even if the library is
     # not found, we will use the included sources for it
     set(HAVE_LZ4 TRUE)
 endif(NOT DEACTIVATE_LZ4)
 
 if(NOT DEACTIVATE_SNAPPY)
-    if(PREFER_EXTERNAL_COMPLIBS)
-        find_package(Snappy)
-    endif(PREFER_EXTERNAL_COMPLIBS)
     # HAVE_SNAPPY will be set to true because even if the library is not found,
     # we will use the included sources for it
     set(HAVE_SNAPPY TRUE)
@@ -110,13 +104,13 @@
 
 if(NOT DEACTIVATE_ZLIB)
     # import the ZLIB_ROOT environment variable to help finding the zlib library
-    if(PREFER_EXTERNAL_COMPLIBS)
+    if(PREFER_EXTERNAL_ZLIB)
         set(ZLIB_ROOT $ENV{ZLIB_ROOT})
         find_package( ZLIB )
         if (NOT ZLIB_FOUND )
             message(STATUS "No zlib found.  Using internal sources.")
         endif (NOT ZLIB_FOUND )
-    endif(PREFER_EXTERNAL_COMPLIBS)
+    endif(PREFER_EXTERNAL_ZLIB)
     # HAVE_ZLIB will be set to true because even if the library is not found,
     # we will use the included sources for it
     set(HAVE_ZLIB TRUE)
diff -Naur external_blosc.orig/blosc/blosc.c external_blosc/blosc/blosc.c
--- external_blosc.orig/blosc/blosc.c   2018-07-30 04:56:38 -0600
+++ external_blosc/blosc/blosc.c        2018-08-11 15:27:26 -0600
@@ -41,12 +41,7 @@
   #include <inttypes.h>
 #endif  /* _WIN32 */

-#if defined(_WIN32)
-  #include "win32/pthread.h"
-  #include "win32/pthread.c"
-#else
-  #include <pthread.h>
-#endif
+#include <pthread.h>


 /* Some useful units */
 diff --git a/blosc/shuffle.c b/blosc/shuffle.c
 index 84b5095..23053b4 100644
 --- a/blosc/shuffle.c
 +++ b/blosc/shuffle.c
 @@ -490,12 +490,12 @@ void unshuffle(size_t bytesoftype, size_t blocksize,
  #else   /* no __SSE2__ available */
 
  void shuffle(size_t bytesoftype, size_t blocksize,
 -             uint8_t* _src, uint8_t* _dest) {
 +             const uint8_t* _src, uint8_t* _dest) {
    _shuffle(bytesoftype, blocksize, _src, _dest);
  }
 
  void unshuffle(size_t bytesoftype, size_t blocksize,
 -               uint8_t* _src, uint8_t* _dest) {
 +               const uint8_t* _src, uint8_t* _dest) {
    _unshuffle(bytesoftype, blocksize, _src, _dest);
  }
  --- a/cmake/FindSSE.cmake
  +++ b/cmake/FindSSE.cmake
  @@ -49,6 +49,17 @@
         set(AVX_FOUND false CACHE BOOL "AVX available on host")
      ENDIF (AVX_TRUE)
   ELSEIF(CMAKE_SYSTEM_NAME MATCHES "Darwin")
  +   execute_process(COMMAND uname -m OUTPUT_VARIABLE ARCHITECTURE OUTPUT_STRIP_TRAILING_WHITESPACE)
  +   message(STATUS "Detected architecture ${ARCHITECTURE}")
  +   IF("${ARCHITECTURE}" STREQUAL "arm64")
  +      set(SSE2_FOUND   false  CACHE BOOL "SSE2 available on host")
  +      set(SSE3_FOUND   false CACHE BOOL "SSE3 available on host")
  +      set(SSSE3_FOUND  false CACHE BOOL "SSSE3 available on host")
  +      set(SSE4_1_FOUND false CACHE BOOL "SSE4.1 available on host")
  +      set(AVX_FOUND false CACHE BOOL "AVX available on host")
  +      return()
  +   ENDIF()
  +   
      EXEC_PROGRAM("/usr/sbin/sysctl -n machdep.cpu.features" OUTPUT_VARIABLE
         CPUINFO)