configure: Change --with[out]-qt to --with[out]-gui and add --with[out]-cli and --with[out]-daemon to support more build configurations

configure.ac

@@ -446,8 +446,18 @@ if test x$boost_sleep != xyes; then
   AC_MSG_ERROR(No working boost sleep implementation found. If on ubuntu 13.10 with libboost1.54-all-dev remove libboost.1.54-all-dev and use libboost1.53-all-dev)
 fi
 
-build_bitcoind=yes
-build_bitcoin_cli=yes
+AC_ARG_WITH([cli],
+  [AS_HELP_STRING([--with-cli],
+  [with CLI (default is yes)])],
+  [build_bitcoin_cli=$withval],
+  [build_bitcoin_cli=yes])
+
+AC_ARG_WITH([daemon],
+  [AS_HELP_STRING([--with-daemon],
+  [with daemon (default is yes)])],
+  [build_bitcoind=$withval],
+  [build_bitcoind=yes])
+
 BITCOIN_QT_INIT
 
 if test x$use_pkgconfig = xyes; then
@@ -622,7 +632,7 @@ if test x$bitcoin_enable_qt != xno; then
   if test x$use_tests = xyes; then
     BUILD_TEST_QT="test"
     if test x$bitcoin_enable_qt_test != xyes; then
-      AC_MSG_ERROR("Qt Test lib not found. Use --disable-tests or --without-qt.")
+      AC_MSG_ERROR("Qt Test lib not found. Use --disable-tests or --without-gui.")
     fi
   fi
 fi
@@ -631,6 +641,10 @@ if test x$use_tests = xyes; then
   BUILD_TEST="test"
 fi
 
+if test "x$use_tests$build_bitcoind$use_qt" = "xnonono"; then
+  AC_MSG_ERROR([No targets! Please specify at least one of: --enable-cli --enable-daemon --enable-gui or --enable-tests])
+fi
+
 AM_CONDITIONAL([TARGET_DARWIN], [test x$TARGET_OS = xdarwin])
 AM_CONDITIONAL([TARGET_WINDOWS], [test x$TARGET_OS = xwindows])
 AM_CONDITIONAL([ENABLE_WALLET],[test x$enable_wallet == xyes])