From f1e4cf9c341f99bbf8afe117858f0b1e0b64179d Mon Sep 17 00:00:00 2001
From: neurolabusc <rorden@sc.edu>
Date: Thu, 13 Feb 2020 11:31:02 -0500
Subject: [PATCH] Experimental Intel zlib support

---
 README.md                            | 9 +++++++++
 SuperBuild/External-INTEL-ZLIB.cmake | 2 ++
 2 files changed, 11 insertions(+)

diff --git a/README.md b/README.md
index 48d769a..c7a9162 100755
--- a/README.md
+++ b/README.md
@@ -28,6 +28,15 @@ cmake  -DZLIB_IMPLEMENTATION=ng ..
 make
 ```
 
+On the other hand, you can build for [ZLIB with Intel Integrated Performance Primitives](https://software.intel.com/en-us/articles/how-to-use-zlib-with-intel-ipp-optimization):
+
+```
+git clone https://github.com/neurolabusc/pigz.git
+cd pigz
+mkdir build && cd build
+cmake  -DZLIB_IMPLEMENTATION=Intel ..
+make
+```
 
 Finally, you can build for your system zlib, which will likely provide the poorest performance:
 
diff --git a/SuperBuild/External-INTEL-ZLIB.cmake b/SuperBuild/External-INTEL-ZLIB.cmake
index bbe505c..e0abfe3 100644
--- a/SuperBuild/External-INTEL-ZLIB.cmake
+++ b/SuperBuild/External-INTEL-ZLIB.cmake
@@ -9,6 +9,8 @@ ExternalProject_Add(zlib
         -Wno-dev
         -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
         -DCMAKE_INSTALL_PREFIX:PATH=${DEP_INSTALL_DIR}
+        -DBUILD_SHARED_LIBS:STRING=OFF
 )
 
+set(CMAKE_FIND_LIBRARY_SUFFIXES .a)
 set(ZLIB_ROOT ${DEP_INSTALL_DIR})