Hola: A ver si alguien me hecha una mano en este tema, lo hago todo tal pone en las chinchetas pero me da el siguiente error:

root@kubuntu:/home/kubuntu/wifi/WLAN Decripter/WepAttack-0.1.3/src#       make clean && make && make install
rm -f *.o
gcc -fno-for-scope -c -D__LINUX_WLAN__ -D__I386__ -o wepattack.o wepattack.c
cc1: warning: command line option "-fno-for-scope" is valid for C++/ObjC++ but not for C
wepattack.c: In function €˜loop_packets’:
wepattack.c:141: warning: incompatible implicit declaration of built-in function €˜strlen’
wepattack.c:146: warning: incompatible implicit declaration of built-in function €˜strlen’
wepattack.c:151: warning: incompatible implicit declaration of built-in function €˜strlen’
wepattack.c:156: warning: incompatible implicit declaration of built-in function €˜strlen’
gcc -fno-for-scope -c -D__LINUX_WLAN__ -D__I386__ -o rc4.o rc4.c
cc1: warning: command line option "-fno-for-scope" is valid for C++/ObjC++ but not for C
gcc -fno-for-scope -c -D__LINUX_WLAN__ -D__I386__ -o wepfilter.o wepfilter.c
cc1: warning: command line option "-fno-for-scope" is valid for C++/ObjC++ but not for C
gcc -fno-for-scope -c -D__LINUX_WLAN__ -D__I386__ -o log.o log.c
cc1: warning: command line option "-fno-for-scope" is valid for C++/ObjC++ but not for C
gcc -fno-for-scope -c -D__LINUX_WLAN__ -D__I386__ -o modes.o modes.c
cc1: warning: command line option "-fno-for-scope" is valid for C++/ObjC++ but not for C
In file included from modes.c:26:
wlan/p80211hdr.h:224: warning: €˜packed’ attribute ignored for field of type €˜UINT8[6]€™
wlan/p80211hdr.h:225: warning: €˜packed’ attribute ignored for field of type €˜UINT8[6]€™
wlan/p80211hdr.h:226: warning: €˜packed’ attribute ignored for field of type €˜UINT8[6]€™
wlan/p80211hdr.h:236: warning: €˜packed’ attribute ignored for field of type €˜UINT8[6]€™
wlan/p80211hdr.h:237: warning: €˜packed’ attribute ignored for field of type €˜UINT8[6]€™
wlan/p80211hdr.h:238: warning: €˜packed’ attribute ignored for field of type €˜UINT8[6]€™
wlan/p80211hdr.h:240: warning: €˜packed’ attribute ignored for field of type €˜UINT8[6]€™
modes.c: In function €˜generate_rc4_key’:
modes.c:51: warning: incompatible implicit declaration of built-in function €˜memcpy’
modes.c: In function €˜process_rc4_key’:
modes.c:68: warning: incompatible implicit declaration of built-in function €˜memcpy’
modes.c: In function €˜mode_keygen’:
modes.c:125: warning: incompatible implicit declaration of built-in function €˜memcpy’
modes.c:127: warning: incompatible implicit declaration of built-in function €˜strcpy’
modes.c: In function €˜mode_wep’:
modes.c:145: warning: incompatible implicit declaration of built-in function €˜memcpy’
gcc -fno-for-scope -c -D__LINUX_WLAN__ -D__I386__ -o misc.o misc.c
cc1: warning: command line option "-fno-for-scope" is valid for C++/ObjC++ but not for C
gcc -fno-for-scope -c -D__LINUX_WLAN__ -D__I386__ -o verify.o verify.c
cc1: warning: command line option "-fno-for-scope" is valid for C++/ObjC++ but not for C
gcc -fno-for-scope -c -D__LINUX_WLAN__ -D__I386__ -o keygen.o keygen.c
cc1: warning: command line option "-fno-for-scope" is valid for C++/ObjC++ but not for C
keygen.c:28:25: error: openssl/md5.h: No existe el fichero ó directorio
keygen.c: In function €˜wep_keygen128’:
keygen.c:56: error: €˜MD5_CTX’ undeclared (first use in this function)
keygen.c:56: error: (Each undeclared identifier is reported only once
keygen.c:56: error: for each function it appears in.)
keygen.c:56: error: expected €˜;€™ before €˜ctx’
keygen.c:68: error: €˜ctx’ undeclared (first use in this function)
make: *** [keygen.o] Error 1
root@kubuntu:/home/kubuntu/wifi/WLAN Decripter/WepAttack-0.1.3/src#


este es el error pero no se por donde meterle mano.  Gracias de antememano.  Un Saludo