NS:too big to run

I build ns-2.1b3 in Windows'95.The building process generates ns.exe, but ns.exe(more than 5M)is too big to run.I modify the makefile.win,removing the some C library such as libc.lib,the new ns.exe is more than 4M yet.The link has output as the following:

LINK : warning LNK4044: unrecognized option "INCREMENTAL:NO"; ignored
LINK : warning LNK4044: unrecognized option "PDB:NONE"; ignored
LINK : warning LNK4044: unrecognized option "RELEASE"; ignored
LINK : warning LNK4044: unrecognized option "align:0x1000"; ignored
kernel32.lib(KERNEL32.dll) : warning LNK4006: __NULL_IMPORT_DESCRIPTOR already defined in msvcrt.lib(MSVCRT40.dll); second definition ignored
advapi32.lib(ADVAPI32.dll) : warning LNK4006: __NULL_IMPORT_DESCRIPTOR already defined in msvcrt.lib(MSVCRT40.dll); second definition ignored
tk80.lib(tk80.dll) : warning LNK4006: __NULL_IMPORT_DESCRIPTOR already defined in msvcrt.lib(MSVCRT40.dll); second definition ignored
tcl80.lib(tcl80.dll) : warning LNK4006: __matherr already defined in msvcrt.lib(merr.obj); second definition ignored
tcl80.lib(tcl80.dll) : warning LNK4006: __NULL_IMPORT_DESCRIPTOR already defined in msvcrt.lib(MSVCRT40.dll); second definition ignored