Try to auto-enable htools-rapi and split query

We try to automatically enable the htools-rapi and split query (if
confd and htools-rapi are enabled) options. This is our intended
default configuration, and allows easier test of the new code
path. Further cleanups for checking whether confd can be enabled will
come later.

The move block is due to the fact that we first have to check for
htools-rapi, and only then we can auto-enable the feature.

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>

configure.ac

@@ -324,7 +324,7 @@ AC_ARG_ENABLE([htools-rapi],
         [AS_HELP_STRING([--enable-htools-rapi],
         [enable use of RAPI in htools (needs curl, default: no)])],
         [],
-        [enable_htools_rapi=no])
+        [enable_htools_rapi=check])
 
 # --enable-confd
 ENABLE_CONFD=
@@ -349,31 +349,6 @@ AC_SUBST(ENABLE_CONFD, $enable_confd)
 
 AM_CONDITIONAL([ENABLE_CONFD], [test x$enable_confd = xTrue])
 
-# --enable-split-query
-ENABLE_SPLIT_QUERY=
-AC_ARG_ENABLE([split-query],
-  [AS_HELP_STRING([--enable-split-query],
-  [enable use of custom query daemon via confd])],
-  [[case "$enableval" in
-      no)
-        enable_split_query=False
-        ;;
-      yes)
-        enable_split_query=True
-        ;;
-      *)
-        echo "Invalid value for enable-confd '$enableval'"
-        exit 1
-        ;;
-    esac
-  ]],
-  [enable_split_query=False])
-AC_SUBST(ENABLE_SPLIT_QUERY, $enable_split_query)
-
-if test x$enable_split_query = xTrue -a x$enable_confd != xTrue; then
-  AC_MSG_ERROR([Split queries require the confd daemon])
-fi
-
 # --with-disk-separator=...
 AC_ARG_WITH([disk-separator],
   [AS_HELP_STRING([--with-disk-separator=STRING],
@@ -548,6 +523,46 @@ if test "$enable_htools" != "no"; then
 fi
 AC_SUBST(HTOOLS)
 
+# --enable-split-query
+ENABLE_SPLIT_QUERY=
+AC_ARG_ENABLE([split-query],
+  [AS_HELP_STRING([--enable-split-query],
+  [enable use of custom query daemon via confd])],
+  [[case "$enableval" in
+      no)
+        enable_split_query=False
+        ;;
+      yes)
+        enable_split_query=True
+        ;;
+      *)
+        echo "Invalid value for enable-confd '$enableval'"
+        exit 1
+        ;;
+    esac
+  ]],
+  [[case "x${enable_confd}x${HTOOLS_NOCURL}x" in
+     xTruexx)
+       enable_split_query=True
+       ;;
+     *)
+       enable_split_query=False
+       ;;
+   esac]])
+AC_SUBST(ENABLE_SPLIT_QUERY, $enable_split_query)
+
+if test x$enable_split_query = xTrue -a x$enable_confd != xTrue; then
+  AC_MSG_ERROR([Split queries require the confd daemon])
+fi
+
+if test x$enable_split_query = xTrue -a x$HTOOLS_NOCURL != x; then
+  AC_MSG_ERROR([Split queries require the htools-rapi feature (curl library)])
+fi
+
+if test x$enable_split_query = xTrue; then
+  AC_MSG_NOTICE([Split query functionality enabled])
+fi
+
 # Check for HsColour
 HTOOLS_APIDOC=no
 AC_ARG_VAR(HSCOLOUR, [HsColour path])