zlib: link with --undefined-version on lld

pkgs/development/libraries/zlib/default.nix

@@ -101,9 +101,16 @@ stdenv.mkDerivation (finalAttrs: {
     ln -s zlib1.dll $out/bin/libz.dll
   '';
 
-  # As zlib takes part in the stdenv building, we don't want references
-  # to the bootstrap-tools libgcc (as uses to happen on arm/mips)
-  env.NIX_CFLAGS_COMPILE = lib.optionalString (!stdenv.hostPlatform.isDarwin) "-static-libgcc";
+  env = lib.optionalAttrs (!stdenv.hostPlatform.isDarwin) {
+    # As zlib takes part in the stdenv building, we don't want references
+    # to the bootstrap-tools libgcc (as uses to happen on arm/mips)
+    NIX_CFLAGS_COMPILE = "-static-libgcc";
+  } // lib.optionalAttrs (stdenv.hostPlatform.linker == "lld") {
+    # lld 16 enables --no-undefined-version by defualt
+    # This makes configure think it can't build dynamic libraries
+    # this may be removed when a version is packaged with https://github.com/madler/zlib/issues/960 fixed
+    NIX_LDFLAGS = "--undefined-version";
+  };
 
   # We don't strip on static cross-compilation because of reports that native
   # stripping corrupted the target library; see commit 12e960f5 for the report.