MLCE-500 Link zlib library to ArmNN

Signed-off-by: Keith Davis <keith.davis@arm.com>
Change-Id: I7c47d0db778456380026cf56865e367e469067e3
diff --git a/cmake/GlobalConfig.cmake b/cmake/GlobalConfig.cmake
index b2f496d..0a9341f 100644
--- a/cmake/GlobalConfig.cmake
+++ b/cmake/GlobalConfig.cmake
@@ -66,6 +66,7 @@
 
 # Compiler flags that are always set
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+set(CMAKE_EXE_LINKER_FLAGS  "${CMAKE_EXE_LINKER_FLAGS} -lz") # Necessary for when building with ACL set with compressed kernels
 if(COMPILER_IS_GNU_LIKE)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14 -Wall -Wextra -Werror -Wold-style-cast -Wno-missing-braces -Wconversion -Wsign-conversion")
 elseif(${CMAKE_CXX_COMPILER_ID} STREQUAL MSVC)