git clone https://github.com/mkj/dropbear.git

cd dropbear

cat > localoptions.h << EOF

#define DROPBEAR_SMALL_CODE 0

#define DROPBEAR_ENABLE_GCM_MODE 1

#define DROPBEAR_SHA1_HMAC 0

#define DROPBEAR_RSA 0

#define DROPBEAR_RSA_SHA1 0

#define DROPBEAR_ECDSA 0

#define DROPBEAR_SK_KEYS 0

#define DROPBEAR_DH_GROUP14_SHA1 0
#define DROPBEAR_DH_GROUP14_SHA256 0

#define DROPBEAR_ECDH 0

EOF


 ./configure --prefix=/u01/dropbear/ --enable-static  --disable-zlib --disable-openpty

 make -j2 PROGRAMS="dropbear dbclient dropbearkey dropbearconvert scp"

 make PROGRAMS="dropbear dbclient dropbearkey dropbearconvert scp" install