🩹 Allow multi-config builds for lit tests

Signed-off-by: Lukas Burgholzer <burgholzer@me.com>

Author: burgholzer

mlir/test/CMakeLists.txt

@@ -25,5 +25,5 @@ add_lit_testsuite(mqt-core-mlir-lit-test "Running the MQT MLIR tests" ${CMAKE_CU
 set_target_properties(mqt-core-mlir-lit-test PROPERTIES FOLDER "Tests")
 
 add_test(NAME mqt-core-mlir-lit-test COMMAND ${CMAKE_COMMAND} --build ${CMAKE_BINARY_DIR} --target
-                                             mqt-core-mlir-lit-test)
-set_tests_properties(mqt-core-mlir-lit-test PROPERTIES DEPENDS mqt-core-mlir-lit-test-build-only)
+                                             mqt-core-mlir-lit-test --config $<CONFIG>)
+set_tests_properties(mqt-core-mlir-lit-test PROPERTIES DEPENDS ${MQT_CORE_MLIR_TEST_DEPENDS})

mlir/test/lit.cfg.py

@@ -15,6 +15,7 @@
 
 from __future__ import annotations
 
+import sys
 from pathlib import Path
 
 import lit.formats
@@ -38,7 +39,28 @@
 # Define where to execute tests (and produce the output).
 config.test_exec_root = Path(config.mqt_core_mlir_test_dir)
 
-multi_config_path = Path(config.mqt_core_mlir_tools_dir) / config.cmake_build_type
-tool_dirs = [config.llvm_tools_dir, config.mqt_core_mlir_tools_dir, str(multi_config_path)]
-tools = ["not", "FileCheck", "quantum-opt"]
-llvm_config.add_tool_substitutions(tools, tool_dirs)
+# Add substitutions for the required tools.
+found = llvm_config.add_tool_substitutions(tools=["not", "FileCheck", "split-file"])
+if not found:
+    msg = "Could not find required LLVM tools 'not' and 'FileCheck'."
+    raise RuntimeError(msg)
+
+# Successively check directories whether they contain the quantum-opt tool
+tool_name = "quantum-opt" if sys.platform != "win32" else "quantum-opt.exe"
+base_tool_dir = Path(config.mqt_core_mlir_tools_dir)
+
+candidate_dirs = [base_tool_dir]
+if config.cmake_build_type:
+    candidate_dirs.append(base_tool_dir / config.cmake_build_type)
+candidate_dirs.extend(base_tool_dir / cfg for cfg in ["Debug", "Release", "RelWithDebInfo", "MinSizeRel"])
+
+found = False
+for candidate_dir in candidate_dirs:
+    if (candidate_dir / tool_name).exists():
+        success = llvm_config.add_tool_substitutions(["quantum-opt"], [str(candidate_dir)])
+        found = True
+        break
+
+if not found:
+    msg = f"Could not find {tool_name} anywhere under {base_tool_dir}."
+    raise RuntimeError(msg)