zlib: Add CMakeLists.txt for build within CMake
diff --git a/Utilities/cmzlib/CMakeLists.txt b/Utilities/cmzlib/CMakeLists.txt
new file mode 100644
index 0000000..ba4bbcb
--- /dev/null
+++ b/Utilities/cmzlib/CMakeLists.txt
@@ -0,0 +1,25 @@
+project(cmzlib C)
+
+# Disable warnings to avoid changing 3rd party code.
+if(CMAKE_C_COMPILER_ID MATCHES
+ "^(GNU|LCC|Clang|AppleClang|IBMClang|XLClang|XL|VisualAge|SunPro|HP|Intel|IntelLLVM|NVHPC)$")
+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w")
+elseif(CMAKE_C_COMPILER_ID STREQUAL "PathScale")
+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -woffall")
+endif()
+
+add_library(cmzlib
+ adler32.c
+ compress.c
+ crc32.c
+ deflate.c
+ gzio.c
+ inffast.c
+ inflate.c
+ inftrees.c
+ trees.c
+ uncompr.c
+ zutil.c
+ )
+
+install(FILES Copyright.txt DESTINATION ${CMAKE_DOC_DIR}/cmzlib)
