+
+ use_gcrypt=0
+ use_openssl=0
+
+ AC_ARG_WITH(gcrypt,
+ [ --with-gcrypt Use GCRYPT for all cryptographic functions],
+ [
+ if test "x$withval" = "xyes" ; then
+ use_gcrypt=1
+ else
+ use_gcrypt=0
+ fi
+ ],
+ [use_gcrypt=0])
+
+ AC_ARG_WITH(openssl,
+ [ --with-openssl Use OpenSSL for all cryptographic functions],
+ [
+ if test "x$withval" = "xyes" ; then
+ use_openssl=1
+ else
+ use_openssl=0
+ fi
+ ],
+ [use_openssl=0])
+
+ if test \( $use_gcrypt -eq 0 -a $use_openssl -eq 0 \) \
+ -o \( $use_gcrypt -eq 1 -a $use_openssl -eq 1 \) ; then
+ cat << EOM
+Error: You must select exactly one of GCRYPT or OpenSSL.
+EOM
+ echo use_openssl=$use_openssl, use_gcrypt=$use_gcrypt
+ exit 1
+ fi
+
+ if test $use_gcrypt -eq 1 ; then
+ AC_MSG_RESULT([Selecting GCRYPT for crypto])
+ tinc_GCRYPT
+ AC_DEFINE(USE_GCRYPT)
+ fi
+ if test $use_openssl -eq 1 ; then
+ AC_MSG_RESULT([Selecting OpenSSL for crypto])
+ tinc_OPENSSL
+ AC_DEFINE(USE_OPENSSL)
+ fi
+
+ tinc_ZLIB