need openssl lib to build

I uploaded source to my ppa and got errors.

gcc -DHAVE_CONFIG_H -I. -Wdate-time -D_FORTIFY_SOURCE=2 -I ./libcperciva/alg -I ./libcperciva/cpusupport -I ./libcperciva/crypto -I ./libcperciva/util -I ./lib/crypto -I ./lib/scryptenc -I ./lib/util -I . -D CPUSUPPORT_CONFIG_FILE=\"cpusupport-config.h\" -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -MT libcperciva/crypto/scrypt-crypto_aes.o -MD -MP -MF libcperciva/crypto/.deps/scrypt-crypto_aes.Tpo -c -o libcperciva/crypto/scrypt-crypto_aes.o `test -f 'libcperciva/crypto/crypto_aes.c' || echo './'`libcperciva/crypto/crypto_aes.c
libcperciva/crypto/crypto_aes.c:6:25: fatal error: openssl/aes.h: No such file or directory
compilation terminated.

what can i do for this error?