$ make
make -C src all
make[1]: Entering directory `/cygdrive/c/dev/src'
make -C osdep
make[2]: Entering directory `/cygdrive/c/dev/src/osdep'
Building for cygwin
make[3]: Entering directory `/cygdrive/c/dev/src/osdep'
make[3]: `.os.cygwin' is up to date.
make[3]: Leaving directory `/cygdrive/c/dev/src/osdep'
make[2]: Leaving directory `/cygdrive/c/dev/src/osdep'
gcc -g -W -Wall -Werror -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=`../evalrev`  -Ii
nclude aircrack-ng.o crypto.o common.o uniqueiv.o aircrack-ptw-lib.o -o aircrack
-ng.exe -lpthread -lssl -lcrypto
aircrack-ng.o: In function `read_thread':
/cygdrive/c/dev/src/aircrack-ng.c:1276: undefined reference to `_known_clear'
/cygdrive/c/dev/src/aircrack-ng.c:1292: undefined reference to `_PTW_addsession'

/cygdrive/c/dev/src/aircrack-ng.c:950: undefined reference to `_uniqueiv_init'
/cygdrive/c/dev/src/aircrack-ng.c:952: undefined reference to `_uniqueiv_check'
/cygdrive/c/dev/src/aircrack-ng.c:1099: undefined reference to `_uniqueiv_mark'
/cygdrive/c/dev/src/aircrack-ng.c:999: undefined reference to `_PTW_addsession'
/cygdrive/c/dev/src/aircrack-ng.c:1061: undefined reference to `_PTW_addsession'

/cygdrive/c/dev/src/aircrack-ng.c:925: undefined reference to `_PTW_newattacksta
te'
/cygdrive/c/dev/src/aircrack-ng.c:932: undefined reference to `_PTW_newattacksta
te'
/cygdrive/c/dev/src/aircrack-ng.c:1076: undefined reference to `_uniqueiv_check'

/cygdrive/c/dev/src/aircrack-ng.c:1074: undefined reference to `_uniqueiv_init'
/cygdrive/c/dev/src/aircrack-ng.c:1288: undefined reference to `_PTW_addsession'

aircrack-ng.o: In function `check_thread':
/cygdrive/c/dev/src/aircrack-ng.c:2027: undefined reference to `_known_clear'
/cygdrive/c/dev/src/aircrack-ng.c:1848: undefined reference to `_uniqueiv_check'

/cygdrive/c/dev/src/aircrack-ng.c:1850: undefined reference to `_uniqueiv_mark'
/cygdrive/c/dev/src/aircrack-ng.c:1846: undefined reference to `_uniqueiv_init'
/cygdrive/c/dev/src/aircrack-ng.c:1824: undefined reference to `_uniqueiv_check'

/cygdrive/c/dev/src/aircrack-ng.c:1822: undefined reference to `_uniqueiv_init'
aircrack-ng.o: In function `clean_exit':
/cygdrive/c/dev/src/aircrack-ng.c:246: undefined reference to `_uniqueiv_wipe'
aircrack-ng.o: In function `crack_wpa_thread':
/cygdrive/c/dev/src/aircrack-ng.c:3465: undefined reference to `_calc_pmk'
/cygdrive/c/dev/src/aircrack-ng.c:3466: undefined reference to `_calc_pmk'
aircrack-ng.o: In function `main':
/cygdrive/c/dev/src/aircrack-ng.c:4158: undefined reference to `_PTW_computeKey'

/cygdrive/c/dev/src/aircrack-ng.c:4182: undefined reference to `_PTW_computeKey'

/cygdrive/c/dev/src/aircrack-ng.c:4188: undefined reference to `_PTW_computeKey'

/cygdrive/c/dev/src/aircrack-ng.c:4190: undefined reference to `_PTW_computeKey'

/cygdrive/c/dev/src/aircrack-ng.c:4192: undefined reference to `_PTW_computeKey'

aircrack-ng.o:/cygdrive/c/dev/src/aircrack-ng.c:4164: more undefined references
to `_PTW_computeKey' follow
collect2: ld returned 1 exit status
make[1]: *** [aircrack-ng.exe] Error 1
make[1]: Leaving directory `/cygdrive/c/dev/src'
make: *** [all] Error 2