jeroen@Hack-Book:~/1.0-dev$ make make -C src all make[1]: Entering directory `/home/jeroen/1.0-dev/src' make -C osdep make[2]: Entering directory `/home/jeroen/1.0-dev/src/osdep' Building for Linux make[3]: Entering directory `/home/jeroen/1.0-dev/src/osdep' make[3]: `.os.Linux' is up to date. make[3]: Leaving directory `/home/jeroen/1.0-dev/src/osdep' make[2]: Leaving directory `/home/jeroen/1.0-dev/src/osdep' gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=`../evalrev` -Iinclude -c -o aircrack-ng.o aircrack-ng.c In file included from aircrack-ng.c:47: crypto.h:12:26: error: openssl/hmac.h: No such file or directory crypto.h:13:25: error: openssl/sha.h: No such file or directory crypto.h:15:25: error: openssl/rc4.h: No such file or directory crypto.h:16:25: error: openssl/aes.h: No such file or directory aircrack-ng.c: In function ‘do_wpa_crack’: aircrack-ng.c:2428: warning: implicit declaration of function ‘HMAC’ aircrack-ng.c:2428: warning: implicit declaration of function ‘EVP_sha1’ aircrack-ng.c:2434: warning: implicit declaration of function ‘EVP_md5’ make[1]: *** [aircrack-ng.o] Error 1 make[1]: Leaving directory `/home/jeroen/1.0-dev/src' make: *** [all] Error 2 jeroen@Hack-Book:~/1.0-dev$