diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 84b9f02bf..0450e5b8a 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -300,6 +300,7 @@ cockatrice_add_test(
   NAME
   server_card_counter_test
   SOURCES
+  ${VERSION_STRING_CPP}
   server_card_counter_test.cpp
   LIBS
   libcockatrice_network
@@ -310,6 +311,7 @@ cockatrice_add_test(
   NAME
   server_dump_zone_test
   SOURCES
+  ${VERSION_STRING_CPP}
   server_dump_zone_test.cpp
   LIBS
   libcockatrice_rng
@@ -321,6 +323,7 @@ cockatrice_add_test(
   NAME
   server_counter_test
   SOURCES
+  ${VERSION_STRING_CPP}
   server_counter_test.cpp
   LIBS
   libcockatrice_network
@@ -332,6 +335,7 @@ cockatrice_add_test(
   server_developer_role_test
   NO_SANITIZE
   SOURCES
+  ${VERSION_STRING_CPP}
   server_developer_role_test.cpp
   LIBS
   libcockatrice_network
@@ -344,6 +348,7 @@ cockatrice_add_test(
   server_moderator_role_test
   NO_SANITIZE
   SOURCES
+  ${VERSION_STRING_CPP}
   server_moderator_role_test.cpp
   LIBS
   libcockatrice_network
@@ -390,6 +395,7 @@ cockatrice_add_test(
   NAME
   local_client_lifetime_test
   SOURCES
+  ${VERSION_STRING_CPP}
   local_client_lifetime_test.cpp
   LIBS
   libcockatrice_network
@@ -411,6 +417,7 @@ cockatrice_add_test(
   NAME
   latency_tracker_test
   SOURCES
+  ${VERSION_STRING_CPP}
   latency_tracker_test.cpp
   LIBS
   libcockatrice_network
diff --git a/tests/client_login_status_test.cpp b/tests/client_login_status_test.cpp
index d8ea63550..a2e073973 100644
--- a/tests/client_login_status_test.cpp
+++ b/tests/client_login_status_test.cpp
@@ -13,6 +13,10 @@
 #include <QMetaObject>
 #include <QString>
 #include <gtest/gtest.h>
+#include <libcockatrice/rng/rng_abstract.h>
+
+// Referenced by other translation units in the server_remote library.
+RNG_Abstract *rng = nullptr;
 
 namespace
 {
diff --git a/tests/server_dump_zone_test.cpp b/tests/server_dump_zone_test.cpp
index 71c410655..e3284efbb 100644
--- a/tests/server_dump_zone_test.cpp
+++ b/tests/server_dump_zone_test.cpp
@@ -7,8 +7,12 @@
 #include <climits>
 #include <gtest/gtest.h>
 #include <libcockatrice/network/server/remote/game/dump_zone_range.h>
+#include <libcockatrice/rng/rng_abstract.h>
 #include <vector>
 
+// Referenced by other translation units in the server_remote library.
+RNG_Abstract *rng = nullptr;
+
 namespace
 {
 /// Indices a dump request resolves to, as the handler would walk them.
diff --git a/tests/theme_migration/theme_migration_test.cpp b/tests/theme_migration/theme_migration_test.cpp
index d77c2f62d..a953c9f0b 100644
--- a/tests/theme_migration/theme_migration_test.cpp
+++ b/tests/theme_migration/theme_migration_test.cpp
@@ -9,12 +9,16 @@
 #include <QStringLiteral>
 #include <QTemporaryDir>
 #include <gtest/gtest.h>
+#include <libcockatrice/rng/rng_abstract.h>
 #include <string>
 
 // Owned by main.cpp in the real application; pixel_map_generator.cpp references
 // it, so the test binary needs a definition even though it never renders.
 ThemeManager *themeManager = nullptr;
 
+// Referenced by other translation units in the server_remote library.
+RNG_Abstract *rng = nullptr;
+
 namespace
 {
 const QString LEGACY = QStringLiteral("Default");