While trying to run./Config I got this
checking for gcc... gcc
checking for C compiler default output... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking if gcc has a working -pipe... yes
checking for rm... /bin/rm
checking for cp... /bin/cp
checking for touch... /bin/touch
checking for openssl... /usr/bin/openssl
checking for install... /usr/bin/install
checking for gmake... gmake
checking for gmake... /usr/bin/gmake
checking for gunzip... /bin/gunzip
checking for pkg-config... /usr/bin/pkg-config
checking for crypt in -ldescrypt... no
checking for crypt in -lcrypt... yes
checking for socket in -lsocket... no
checking for inet_ntoa in -lnsl... yes
checking how to run the C preprocessor... /lib/cpp
configure: error: C preprocessor "/lib/cpp" fails sanity check