Code:
root@bt:~/Desktop/aircrack-ng# apt-get install libssl-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
libucl1 upx-ucl
Use 'apt-get autoremove' to remove them.
The following NEW packages will be installed:
libssl-dev
0 upgraded, 1 newly installed, 0 to remove and 2 not upgraded.
Need to get 2,007kB of archives.
After this operation, 5,829kB of additional disk space will be used.
Get:1 http://32.repository.backtrack-linux.org/ revolution/main libssl-dev 0.9.8k-7ubuntu8.6 [2,007kB]
Fetched 2,007kB in 5s (370kB/s)
Selecting previously deselected package libssl-dev.
(Reading database ... 235061 files and directories currently installed.)
Unpacking libssl-dev (from .../libssl-dev_0.9.8k-7ubuntu8.6_i386.deb) ...
Processing triggers for man-db ...
Setting up libssl-dev (0.9.8k-7ubuntu8.6) ...
root@bt:~/Desktop/aircrack-ng# make
make -C src all
make[1]: Entering directory `/root/Desktop/aircrack-ng/src'
make -C osdep
make[2]: Entering directory `/root/Desktop/aircrack-ng/src/osdep'
Building for Linux
make[3]: Entering directory `/root/Desktop/aircrack-ng/src/osdep'
make[3]: `.os.Linux' is up to date.
make[3]: Leaving directory `/root/Desktop/aircrack-ng/src/osdep'
make[2]: Leaving directory `/root/Desktop/aircrack-ng/src/osdep'
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude -c -o aircrack-ng.o aircrack-ng.c
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude -c -o crypto.o crypto.c
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude -c -o common.o common.c
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude -c -o uniqueiv.o uniqueiv.c
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude -c -o aircrack-ptw-lib.o aircrack-ptw-lib.c
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude aircrack-ng.o crypto.o common.o uniqueiv.o aircrack-ptw-lib.o sha1-sse2.S -o aircrack-ng -lpthread -lssl -lcrypto
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude -c -o airdecap-ng.o airdecap-ng.c
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude airdecap-ng.o crypto.o common.o -o airdecap-ng -lssl -lcrypto
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude -c -o packetforge-ng.o packetforge-ng.c
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude packetforge-ng.o common.o crypto.o -o packetforge-ng -lssl -lcrypto
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude -c -o ivstools.o ivstools.c
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude ivstools.o common.o crypto.o uniqueiv.o -o ivstools -lssl -lcrypto
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude -c -o kstats.o kstats.c
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude kstats.o -o kstats
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude -c -o makeivs-ng.o makeivs-ng.c
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude makeivs-ng.o common.o uniqueiv.o -o makeivs-ng
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude -c -o airdecloak-ng.o airdecloak-ng.c
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude airdecloak-ng.o common.o osdep/radiotap/radiotap-parser.o -o airdecloak-ng
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude -c -o wpaclean.o wpaclean.c
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude wpaclean.o -o wpaclean -Losdep -losdep
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude -c -o besside-ng-crawler.o besside-ng-crawler.c
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude besside-ng-crawler.o -o besside-ng-crawler -lpcap
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude -c -o aireplay-ng.o aireplay-ng.c
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude aireplay-ng.o common.o crypto.o -o aireplay-ng -Losdep -losdep -lssl -lcrypto
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude -c -o airodump-ng.o airodump-ng.c
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude airodump-ng.o common.o crypto.o uniqueiv.o -o airodump-ng -Losdep -losdep -lssl -lcrypto -lpthread
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude -c -o airserv-ng.o airserv-ng.c
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude airserv-ng.o common.o -o airserv-ng -Losdep -losdep
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude -c -o airtun-ng.o airtun-ng.c
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude airtun-ng.o common.o crypto.o -o airtun-ng -Losdep -losdep -lssl -lcrypto
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude -c -o airbase-ng.o airbase-ng.c
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude airbase-ng.o common.o crypto.o -o airbase-ng -Losdep -losdep -lssl -lcrypto -lpthread
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude -c -o besside-ng.o besside-ng.c
gcc -g -W -Wall -O3 -D_FILE_OFFSET_BITS=64 -D_REVISION=2029 -Iinclude besside-ng.o crypto.c common.o aircrack-ptw-lib.o -o besside-ng -Losdep -losdep -lssl -lcrypto -lz
make[1]: Leaving directory `/root/Desktop/aircrack-ng/src'
root@bt:~/Desktop/aircrack-ng#It works just fine. Also closing this since I guess you didn't get the hint the first time.