mariadb-connector-odbc: fix build with clang 16 on Darwin

* Use libkrb5 on Darwin;
* Use nixpkgs zlib instead of vendored zlib to fix call to undeclared
  function `close`; and
* Include `unistd.h` for `sleep`.

pkgs/development/libraries/unixODBCDrivers/default.nix

@@ -41,8 +41,14 @@
       fetchSubmodules = true;
     };
 
+    patches = [
+      # Fix `call to undeclared function 'sleep'` with clang 16
+      ./mariadb-connector-odbc-unistd.patch
+    ];
+
     nativeBuildInputs = [ cmake ];
-    buildInputs = [ unixODBC openssl libiconv ];
+    buildInputs = [ unixODBC openssl libiconv zlib ]
+      ++ lib.optionals stdenv.isDarwin [ libkrb5 ];
 
     preConfigure = ''
       # we don't want to build a .pkg
@@ -52,6 +58,7 @@
     '';
 
     cmakeFlags = [
+      "-DWITH_EXTERNAL_ZLIB=ON"
       "-DODBC_LIB_DIR=${lib.getLib unixODBC}/lib"
       "-DODBC_INCLUDE_DIR=${lib.getDev unixODBC}/include"
       "-DWITH_OPENSSL=ON"

pkgs/development/libraries/unixODBCDrivers/mariadb-connector-odbc-unistd.patch

@@ -0,0 +1,12 @@
+diff -ur a/test/use_result.c b/test/use_result.c
+--- a/test/use_result.c	1969-12-31 19:00:01.000000000 -0500
++++ b/test/use_result.c	2023-09-05 00:08:12.979889343 -0400
+@@ -23,6 +23,8 @@
+   51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
+ */
+ 
++#include <unistd.h>
++
+ #include "tap.h"
+ 
+ SQLINTEGER my_max_rows= 100;