[3064] Don't even enter resolver directories if experimental resolver is disabled

src/bin/Makefile.am

+if BUILD_EXPERIMENTAL_RESOLVER
+# Build resolver only with --enable-experimental-resolver
+experimental_resolver = resolver
+endif
+
 SUBDIRS = bind10 bindctl cfgmgr ddns loadzone msgq cmdctl auth xfrin \
-	xfrout usermgr zonemgr stats tests resolver sockcreator dhcp4 dhcp6 d2\
-	dbutil sysinfo memmgr
+	xfrout usermgr zonemgr stats tests $(experimental_resolver) \
+	sockcreator dhcp4 dhcp6 d2 dbutil sysinfo memmgr
 
 check-recursive: all-recursive

src/bin/resolver/Makefile.am

-if BUILD_EXPERIMENTAL_RESOLVER
-# Build the resolver only with --enable-experimental-resolver
 SUBDIRS = . tests bench
 
 AM_CPPFLAGS = -I$(top_srcdir)/src/lib -I$(top_builddir)/src/lib
@@ -85,4 +83,3 @@ b10_resolver_LDFLAGS = -pthread
 # and can't use @datadir@ because doesn't expand default ${prefix}
 b10_resolverdir = $(pkgdatadir)
 b10_resolver_DATA = resolver.spec
-endif

src/lib/Makefile.am

+if BUILD_EXPERIMENTAL_RESOLVER
+# Build resolver only with --enable-experimental-resolver
+experimental_resolver = resolve
+endif
+
 SUBDIRS = exceptions util log hooks cryptolink dns cc config acl xfr bench \
-          asiolink asiodns nsas cache resolve testutils datasrc \
-          server_common python dhcp dhcp_ddns dhcpsrv statistics
+          asiolink asiodns nsas cache $(experimental_resolver) testutils \
+          datasrc server_common python dhcp dhcp_ddns dhcpsrv statistics

src/lib/resolve/Makefile.am

-if BUILD_EXPERIMENTAL_RESOLVER
-# Build resolver only with --enable-experimental-resolver
 SUBDIRS = . tests
 
 AM_CPPFLAGS = -I$(top_srcdir)/src/lib -I$(top_builddir)/src/lib
@@ -49,4 +47,3 @@ if USE_CLANGPP
 libb10_resolve_la_CXXFLAGS += -Wno-error
 endif
 libb10_resolve_la_CPPFLAGS = $(AM_CPPFLAGS)
-endif