I ran against troubles with openssl-1.0.1d today.
I've downloaded the whole directory from a mirror in order to compile openssl on my machine but the compiling stopped on line 164, I got this error:
chmod 644 /tmp/package-openssl/usr/lib64/pkgconfig/openssl.pc
./openssl.SlackBuild: line 164: ./openssl0.build: Permission denied
I tried twice, with the sources from Slackware64-14.0 and from slackware64-current.
Is it only happening on my PC or do you get the same error when running the Slackbuild ?