reviewed: marka

check whether linking with OpenSSL works at all before checking
whether the version is compatible

configure.in

@@ -13,7 +13,7 @@
 # NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 # WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
-AC_REVISION($Revision: 1.294.2.9 $)
+AC_REVISION($Revision: 1.294.2.10 $)
 
 AC_INIT(lib/dns/name.c)
 AC_PREREQ(2.13)
@@ -311,11 +311,26 @@ case "$use_openssl" in
 		DNS_OPENSSL_LIBS="-L$use_openssl/lib -lcrypto"
 		AC_MSG_RESULT(using openssl from $use_openssl/lib and $use_openssl/include)
 
-		AC_MSG_CHECKING(OpenSSL library version)
 		saved_cflags="$CFLAGS"
 		saved_libs="$LIBS"
 		CFLAGS="$CFLAGS $DST_OPENSSL_INC"
 		LIBS="$LIBS $DNS_OPENSSL_LIBS"
+		AC_MSG_CHECKING(whether linking with OpenSSL works)
+		AC_TRY_RUN([
+#include <openssl/err.h>
+int main() {
+	ERR_clear_error();
+	return (0);
+}
+],
+	        [AC_MSG_RESULT(yes)],
+		[AC_MSG_RESULT(no)
+		 AC_MSG_ERROR(Could not run test program using OpenSSL from
+$use_openssl/lib and $use_openssl/include.
+Please check the argument to --with-openssl and your
+shared library configuration (e.g., LD_LIBRARY_PATH).)],
+		[AC_MSG_RESULT(assuming it does work on target platform)])
+		AC_MSG_CHECKING(OpenSSL library version)
 		AC_TRY_RUN([
 #include <stdio.h>
 #include <openssl/opensslv.h>