diff --git a/core/base_rules.mk b/core/base_rules.mk
index cce6ec1..f70911e 100644
--- a/core/base_rules.mk
+++ b/core/base_rules.mk
@@ -705,13 +705,19 @@
 
 ifeq ($(use_testcase_folder),true)
 ifneq ($(my_test_data_file_pairs),)
+# Filter out existng installed test data paths when collecting test data files to be installed and
+# indexed as they cause build rule conflicts. Instead put them in a separate list which is only
+# used for indexing.
 $(foreach pair, $(my_test_data_file_pairs), \
   $(eval parts := $(subst :,$(space),$(pair))) \
   $(eval src_path := $(word 1,$(parts))) \
   $(eval file := $(word 2,$(parts))) \
   $(foreach suite, $(LOCAL_COMPATIBILITY_SUITE), \
     $(eval my_compat_dist_$(suite) += $(foreach dir, $(call compatibility_suite_dirs,$(suite),$(arch_dir)), \
-      $(call filter-copy-pair,$(src_path),$(call append-path,$(dir),$(file)),$(my_installed_test_data))))))
+      $(call filter-copy-pair,$(src_path),$(call append-path,$(dir),$(file)),$(my_installed_test_data)))) \
+    $(eval my_compat_dist_test_data_$(suite) += \
+      $(foreach dir, $(call compatibility_suite_dirs,$(suite),$(arch_dir)), \
+        $(filter $(my_installed_test_data),$(call append-path,$(dir),$(file)))))))
 endif
 else
 ifneq ($(my_test_data_file_pairs),)
@@ -732,7 +738,8 @@
 
 $(call create-suite-dependencies)
 $(foreach suite, $(LOCAL_COMPATIBILITY_SUITE), \
-  $(eval my_compat_dist_config_$(suite) := ))
+  $(eval my_compat_dist_config_$(suite) := ) \
+  $(eval my_compat_dist_test_data_$(suite) := ))
 
 endif  # LOCAL_COMPATIBILITY_SUITE
 
diff --git a/core/definitions.mk b/core/definitions.mk
index fb11ab6..3499da9 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -2897,7 +2897,8 @@
   $(if $(filter $(suite),$(ALL_COMPATIBILITY_SUITES)),,$(eval ALL_COMPATIBILITY_SUITES += $(suite))) \
   $(eval COMPATIBILITY.$(suite).FILES := \
     $$(COMPATIBILITY.$(suite).FILES) $$(foreach f,$$(my_compat_dist_$(suite)),$$(call word-colon,2,$$(f))) \
-      $$(foreach f,$$(my_compat_dist_config_$(suite)),$$(call word-colon,2,$$(f)))) \
+      $$(foreach f,$$(my_compat_dist_config_$(suite)),$$(call word-colon,2,$$(f))) \
+      $$(my_compat_dist_test_data_$(suite))) \
   $(eval COMPATIBILITY.$(suite).MODULES := \
     $$(COMPATIBILITY.$(suite).MODULES) $$(my_register_name))) \
 $(eval $(my_all_targets) : $(call copy-many-files, \