--- CMakeLists.txt.orig	2025-03-14 12:56:24 UTC
+++ CMakeLists.txt
@@ -125,7 +125,7 @@ if (NOT "${PHASAR_TARGET_ARCH_INTERNAL}" STREQUAL "")
   check_cxx_compiler_flag("-march=${PHASAR_TARGET_ARCH_INTERNAL}" MARCH_SUPPORTED)
   if (MARCH_SUPPORTED)
     message(STATUS "Target architecture '${PHASAR_TARGET_ARCH_INTERNAL}' enabled")
-    string(APPEND CMAKE_CXX_FLAGS_RELEASE " -march=${PHASAR_TARGET_ARCH_INTERNAL}")
+    #string(APPEND CMAKE_CXX_FLAGS_RELEASE " -march=${PHASAR_TARGET_ARCH_INTERNAL}")
   else()
     message(WARNING "Target architecture '${PHASAR_TARGET_ARCH_INTERNAL}' not supported. Fallback to generic build")
   endif()
@@ -248,11 +248,13 @@ set(PHASAR_DEPS_INSTALL_DESTINATION ${CMAKE_INSTALL_LI
 set(PHASAR_DEPS_INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/phasar/deps)
 
 # Filesystem
+if (FALSE)
 if (LLVM_ENABLE_LIBCXX)
   set(PHASAR_STD_FILESYSTEM c++fs)
 else()
   set(PHASAR_STD_FILESYSTEM stdc++fs)
 endif()
+endif()
 
 # Config
 set(PHASAR_CUSTOM_CONFIG_INSTALL_DIR "" CACHE STRING "If set, customizes the directory, where configuration files for PhASAR are installed (default is ${CMAKE_INSTALL_PREFIX}/.phasar-config)")
@@ -407,6 +409,8 @@ if (PHASAR_BUILD_UNITTESTS)
 # Add Phasar unittests and build all IR test code
 if (PHASAR_BUILD_UNITTESTS)
   message("Phasar unittests")
+
+  find_package(GTest CONFIG REQUIRED)
 
   enable_testing()
   add_subdirectory(unittests)