I think it's just a bogus warning at the end because in config.log it has these lines about gnutls and capi20: > > configure:6223: checking capi20.h usability > configure:6240: gcc -m32 -c -g -O2 conftest.c >&5 > configure:6247: $? = 0 > configure:6261: result: yes > configure:6265: checking capi20.h presence > configure:6280: gcc -m32 -E conftest.c > configure:6287: $? = 0 > configure:6301: result: yes > configure:6334: checking for capi20.h > configure:6343: result: yes > > > configure:13413: result: yes > configure:13417: checking gnutls/gnutls.h presence > configure:13432: gcc -m32 -E conftest.c > configure:13439: $? = 0 > configure:13453: result: yes > configure:13486: checking for gnutls/gnutls.h > configure:13493: result: yes > In both cases it's finding them and presumably using them as well because if I look in the "dlls/capi2032" and "dlls/schannel" directories then I can clearly see the correpsonding *.dll.so files been made there. As for the GNUTLS_CFLAGS and GNUTLS_LIBS-- :) yeah, just read what it says in "./configure --help" and I think I know what you mean, funny though that "configure" thinks that it can't find it in the usual place "/usr/lib" because that's where it is. So I looked closer at "configure" script for that matter and found GNUTLS_CFLAGS and GNUTLS_LIBS specified like this: ac_gnutls_libs="`$PKG_CONFIG --libs gnutls 2>/dev/null`" ac_gnutls_cflags="`$PKG_CONFIG --cflags gnutls 2>/dev/null`" CPPFLAGS="$CPPFLAGS $ac_gnutls_cflags" Then later in the script it assigns this variable: GNUTLSINCL="$ac_gnutls_cflags" But if I look in the "config.log" again then towards the end there's this: GNUTLSINCL='' Anyway, I had to move on so I've uninstalled this version of wine (which was development version anyway) and installed a stable one with yum (wine-1.0.1-1). It's working more or less fine now-- having some trouble installing .net framework 2.0, but that's gonna be a new thread if I can't find anything on google. Thanks for helping, guys!