From fa3585850eb68a91e08e14fb8f8aad5881f12a8e Mon Sep 17 00:00:00 2001
From: Hartmut Kaiser <hartmut.kaiser@gmail.com>
Date: Sat, 24 Jun 2023 11:06:32 -0500
Subject: [PATCH] Re-enable compiling with HPX_WITH_NETWORKING=OFF

---
 .jenkins/lsu/env-gcc-11.sh                         |  4 +---
 examples/quickstart/custom_serialization.cpp       | 10 +++++++++-
 libs/full/agas/src/addressing_service.cpp          |  2 ++
 .../hpx/runtime_distributed/migrate_component.hpp  | 14 +++++++++-----
 .../src/runtime_distributed.cpp                    |  1 +
 5 files changed, 22 insertions(+), 9 deletions(-)

diff --git a/.jenkins/lsu/env-gcc-11.sh b/.jenkins/lsu/env-gcc-11.sh
index e711bd7bce10..b9f7be125f7f 100644
--- a/.jenkins/lsu/env-gcc-11.sh
+++ b/.jenkins/lsu/env-gcc-11.sh
@@ -20,9 +20,7 @@ configure_extra_options+=" -DHPX_WITH_MALLOC=system"
 configure_extra_options+=" -DHPX_WITH_FETCH_ASIO=ON"
 configure_extra_options+=" -DHPX_WITH_COMPILER_WARNINGS=ON"
 configure_extra_options+=" -DHPX_WITH_COMPILER_WARNINGS_AS_ERRORS=ON"
-configure_extra_options+=" -DHPX_WITH_PARCELPORT_MPI=ON"
-configure_extra_options+=" -DHPX_WITH_PARCELPORT_LCI=ON"
-configure_extra_options+=" -DHPX_WITH_FETCH_LCI=ON"
+configure_extra_options+=" -DHPX_WITH_NETWORKING=OFF"
 configure_extra_options+=" -DHPX_WITH_DATAPAR_BACKEND=STD_EXPERIMENTAL_SIMD"
 
 # The pwrapi library still needs to be set up properly on rostam
diff --git a/examples/quickstart/custom_serialization.cpp b/examples/quickstart/custom_serialization.cpp
index 06f885e3e0b5..02253df59d35 100644
--- a/examples/quickstart/custom_serialization.cpp
+++ b/examples/quickstart/custom_serialization.cpp
@@ -203,8 +203,16 @@ int main()
 
     send_gravity_action gravityAction;
     auto gravity = planet_weight_calculator(9.81);
-    hpx::async(gravityAction, hpx::find_remote_localities()[0], gravity).get();
 
+    auto remote_localities = hpx::find_remote_localities();
+    if (!remote_localities.empty())
+    {
+        hpx::async(gravityAction, remote_localities[0], gravity).get();
+    }
+    else
+    {
+        hpx::async(gravityAction, hpx::find_here(), gravity).get();
+    }
     return 0;
 }
 //]
diff --git a/libs/full/agas/src/addressing_service.cpp b/libs/full/agas/src/addressing_service.cpp
index b2b4b053a4ee..d4a7a1a0a238 100644
--- a/libs/full/agas/src/addressing_service.cpp
+++ b/libs/full/agas/src/addressing_service.cpp
@@ -736,8 +736,10 @@ namespace hpx::agas {
         naming::gid_type const id(
             naming::detail::get_stripped_gid_except_dont_cache(gid));
 
+#if defined(HPX_HAVE_NETWORKING)
         // migratable objects should be handled by the function below
         HPX_ASSERT(!naming::detail::is_migratable(gid));
+#endif
 
         // Try to resolve the address of the GID from the locally available
         // information.
diff --git a/libs/full/runtime_distributed/include/hpx/runtime_distributed/migrate_component.hpp b/libs/full/runtime_distributed/include/hpx/runtime_distributed/migrate_component.hpp
index afa025492e5e..feb59b815d28 100644
--- a/libs/full/runtime_distributed/include/hpx/runtime_distributed/migrate_component.hpp
+++ b/libs/full/runtime_distributed/include/hpx/runtime_distributed/migrate_component.hpp
@@ -49,16 +49,21 @@ namespace hpx { namespace components {
 #if defined(DOXYGEN)
     future<hpx::id_type>
 #else
-    inline std::enable_if_t<traits::is_component<Component>::value &&
-            traits::is_distribution_policy<DistPolicy>::value,
+    std::enable_if_t<traits::is_component_v<Component> &&
+            traits::is_distribution_policy_v<DistPolicy>,
         future<hpx::id_type>>
 #endif
-    migrate(hpx::id_type const& to_migrate, DistPolicy const& policy)
+    migrate(hpx::id_type const& to_migrate,
+        [[maybe_unused]] DistPolicy const& policy)
     {
+#if defined(HPX_HAVE_NETWORKING)
         using action_type =
             server::perform_migrate_component_action<Component, DistPolicy>;
         return hpx::detail::async_colocated<action_type>(
             to_migrate, to_migrate, policy);
+#else
+        return hpx::make_ready_future(to_migrate);
+#endif
     }
 
     /// Migrate the given component to the specified target locality
@@ -133,8 +138,7 @@ namespace hpx { namespace components {
 #if defined(DOXYGEN)
     future<hpx::id_type>
 #else
-    inline std::enable_if_t<traits::is_component<Component>::value,
-        future<hpx::id_type>>
+    std::enable_if_t<traits::is_component_v<Component>, future<hpx::id_type>>
 #endif
     migrate(hpx::id_type const& to_migrate, hpx::id_type const& target_locality)
     {
diff --git a/libs/full/runtime_distributed/src/runtime_distributed.cpp b/libs/full/runtime_distributed/src/runtime_distributed.cpp
index d75b538be0fb..3555c303931f 100644
--- a/libs/full/runtime_distributed/src/runtime_distributed.cpp
+++ b/libs/full/runtime_distributed/src/runtime_distributed.cpp
@@ -23,6 +23,7 @@
 #include <hpx/functional/function.hpp>
 #include <hpx/itt_notify/thread_name.hpp>
 #include <hpx/modules/errors.hpp>
+#include <hpx/modules/io_service.hpp>
 #include <hpx/modules/logging.hpp>
 #include <hpx/modules/static_reinit.hpp>
 #include <hpx/modules/threadmanager.hpp>