+if test "x$want_sha256" = "xyes"; then
+ AC_DEFINE(HAVE_SHA256, 1, [Define if you want sha256 support])
+fi
+AM_CONDITIONAL(HAVE_SHA256, test "x$want_sha256" = "xyes")
+
+# check for openssl
+AC_ARG_ENABLE(openssl,
+ AC_HELP_STRING([--enable-openssl], [Enable signature checking with OpenSSL
+ [[default=no]] ]),
+ [want_openssl="$enableval"], [want_openssl="no"])
+
+if test "x$want_openssl" = "xyes"; then
+ AC_DEFINE(HAVE_OPENSSL, 1, [Define if you want OpenSSL support])
+ NEED_SSL_LIBS="yes"
+fi
+
+# check for libssl-curl
+AC_ARG_ENABLE(ssl-curl,
+ AC_HELP_STRING([--enable-ssl-curl], [Enable certificate authentication with curl
+ [[default="yes"]] ]),
+ [want_sslcurl="$enableval"], [want_sslcurl="yes"])
+
+if test "x$want_curl" = "xyes" -a "x$want_sslcurl" = "xyes"; then
+ AC_DEFINE(HAVE_CURL, 1, [Define if you want CURL support])
+ AC_DEFINE(HAVE_SSLCURL, 1, [Define if you want certificate authentication with curl])
+ NEED_SSL_LIBS="yes"
+fi
+
+if test "x$NEED_SSL_LIBS" = "xyes"; then
+ AC_MSG_CHECKING([if openssl is available])
+
+ PKG_CHECK_MODULES(OPENSSL, openssl, [:], [:])
+ if test "x$OPENSSL_LIBS" != "x"; then
+ AC_MSG_RESULT(yes)
+ else
+ OPENSSL_LIBS="-lcrypto -lssl"
+ dnl If pkg-config fails, run compile/link test.
+ AC_TRY_LINK([
+#include <openssl/opensslv.h>
+], [
+return OPENSSL_VERSION_NUMBER; ],
+ [
+ AC_MSG_RESULT(yes)
+
+ ], [
+ AC_MSG_RESULT(no)
+ AC_MSG_ERROR(OpenSSL not found)
+ ])
+ fi
+ AC_SUBST(OPENSSL_LIBS)
+fi