backporting OpenSSL-1.0.1e to Debian Lenny

backporting OpenSSL-1.0.1e to Debian Lenny

I have an old embedded board that supports only Debian Lenny. I need to install OpenSSL-1.0.1e on it. If I download the source code then try to compile the source code, I get this error
ts7500:/home/openssl-1.0.1e# make
making all in crypto...
make[1]: Entering directory `/home/openssl-1.0.1e/crypto'
gcc -I. -I.. -I../include  -fPIC -DOPENSSL_PIC -DZLIB_SHARED -DZLIB -DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H -Wa,--noexecstack -DTERMIO -O3 -Wall -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_GF2m -DSHA1_ASM -DSHA256_ASM -DSHA512_ASM -DAES_ASM -DGHASH_ASM   -c -o armcap.o armcap.c
In file included from armcap.c:8:
arm_arch.h:35:5: error: #error "unsupported ARM architecture"
make[1]: *** [armcap.o] Error 1
make[1]: Leaving directory `/home/openssl-1.0.1e/crypto'
make: *** [build_crypto] Error 1
how can I overcome that error?
Note: ts7500:/home/openssl-1.0.1e# `uname -a`
Linux ts7500 3.4.0 #83 Sun May 26 17:07:14 CEST 2013 `armv4l GNU/Linux`