Fix cmake build on AIX.

The --version-script linker option is not supported by the linker on AIX systems

madler/zlib#ade6825c4996f73d776b0ffa038360762bd318ae

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0d4659f4cf75187a6bcb6a82e8baae0e04d9a2d8..f8236c44fcea91d0fa46e89b74dd099e3f2480cd 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1137,7 +1137,7 @@ if(NOT DEFINED BUILD_SHARED_LIBS OR BUILD_SHARED_LIBS)
         if(HAVE_NO_INTERPOSITION)
             set_target_properties(zlib PROPERTIES COMPILE_FLAGS "-fno-semantic-interposition")
         endif()
-        if(NOT APPLE)
+        if(NOT APPLE AND NOT CMAKE_SYSTEM_NAME STREQUAL AIX)
             if(NOT ZLIB_COMPAT)
                 add_definitions(-DHAVE_SYMVER)
             endif()