From MySQL:

Add Windows makefile 'cmakelists.txt' (Note that I had to add ut0vec.c to
it.)

Modify univ.i to not include ib_config.h on Windows.

cmakelists.txt

+#SET(CMAKE_CXX_FLAGS_DEBUG "-DSAFEMALLOC -DSAFE_MUTEX")
+#SET(CMAKE_C_FLAGS_DEBUG "-DSAFEMALLOC -DSAFE_MUTEX")
+ADD_DEFINITIONS(-DMYSQL_SERVER -D_WIN32 -DWIN32 -D_LIB)
+
+INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/include include)
+ADD_LIBRARY(innobase btr/btr0btr.c btr/btr0cur.c btr/btr0pcur.c btr/btr0sea.c 
+					 buf/buf0buf.c buf/buf0flu.c buf/buf0lru.c buf/buf0rea.c 
+					 data/data0data.c data/data0type.c 
+					 dict/dict0boot.c dict/dict0crea.c dict/dict0dict.c dict/dict0load.c dict/dict0mem.c 
+					 dyn/dyn0dyn.c 
+					 eval/eval0eval.c eval/eval0proc.c 
+					 fil/fil0fil.c 
+					 fsp/fsp0fsp.c
+					 fut/fut0fut.c fut/fut0lst.c 
+					 ha/ha0ha.c ha/hash0hash.c 
+					 ibuf/ibuf0ibuf.c 
+					 pars/lexyy.c pars/pars0grm.c pars/pars0opt.c pars/pars0pars.c pars/pars0sym.c 
+					 lock/lock0lock.c
+					 log/log0log.c log/log0recv.c 
+					 mach/mach0data.c 
+					 mem/mem0mem.c mem/mem0pool.c 
+					 mtr/mtr0log.c mtr/mtr0mtr.c 
+					 os/os0file.c os/os0proc.c os/os0sync.c os/os0thread.c 
+					 page/page0cur.c page/page0page.c 
+					 que/que0que.c 
+					 read/read0read.c 
+					 rem/rem0cmp.c rem/rem0rec.c
+					 row/row0ins.c row/row0mysql.c row/row0purge.c row/row0row.c row/row0sel.c row/row0uins.c 
+					 row/row0umod.c row/row0undo.c row/row0upd.c row/row0vers.c 
+					 srv/srv0que.c srv/srv0srv.c srv/srv0start.c 
+					 sync/sync0arr.c sync/sync0rw.c sync/sync0sync.c 
+					 thr/thr0loc.c 
+					 trx/trx0purge.c trx/trx0rec.c trx/trx0roll.c trx/trx0rseg.c trx/trx0sys.c trx/trx0trx.c trx/trx0undo.c 
+					 usr/usr0sess.c 
+					 ut/ut0byte.c ut/ut0dbg.c ut/ut0mem.c ut/ut0rnd.c ut/ut0ut.c ut/ut0vec.c)

include/univ.i

@@ -40,7 +40,9 @@ if we are compiling on Windows. */
 #undef VERSION
 
 /* Include the header file generated by GNU autoconf */
+#ifndef __WIN__
 #include "../ib_config.h"
+#endif
 
 #ifdef HAVE_SCHED_H
 #include <sched.h>