[Exim] *PLEASE HELP getting the following error ... while co…

I get the following errors when i try and compile on redhat 9
please could someone advise ...

tls-openssl.c: In function 'tls_init':
tls-openssl.c:343: warning: assignment from incompatible pointer type
tls-openssl.c: In function 'construct_cipher_name':
tls-openssl.c:410: deferencing pointer to incomplete type
make[1]: ***[tls.o] Error 1
make[1]: Leaving directly '/greg/exim-4.14/build-Linux-athlon'
make: *** [go] Error 2

Many Thanks
Gregory Machin