[PHP-INSTALL] undefined reference to EVP_CIPHER_CTX_block_size

[Don Fike]

I'm having problems building the last two releases of PHP.
When running make I get the following error;
ext/openssl/.libs/openssl.o(.text+0x670b): In function `zif_openssl_seal':
/sw/sources/php-5.2.5/ext/openssl/openssl.c:3631: undefined reference to 
`EVP_CIPHER_CTX_block_size'
collect2: ld returned 1 exit status

[linux] nm ext/openssl/.libs/openssl.o | grep EVP_CIPHER_CTX_block_size
        U EVP_CIPHER_CTX_block_size

I have tried a variety of LDFLAGS/LIBPATH/LD_LIBRARY_PATH without success.
The symbol is present in my libcrypto.so but undefined in libssl.so.

Any suggestions on how to successfully build?

Thanks,