diff --git a/cpp_src/CMakeLists.txt b/cpp_src/CMakeLists.txt
index b661f49..221b58f 100644
--- a/cpp_src/CMakeLists.txt
+++ b/cpp_src/CMakeLists.txt
@@ -38,18 +38,26 @@ pybind11_add_module(lasp_cpp MODULE lasp_cpp.cpp
 target_link_libraries(lasp_cpp PRIVATE lasp_device_lib lasp_dsp_lib
     ${OpenMP_CXX_LIBRARIES} ${LASP_FFT_LIBS} ${TARGET_OS_LINKLIBS})
 
+target_compile_definitions(lasp_cpp PRIVATE
+    MODULE_NAME=$<TARGET_FILE_BASE_NAME:lasp_cpp>
+    VERSION_INFO="${PY_FULL_VERSION}"
+)
+
+# Hide all symbols by default (including external libraries on Linux)
+if(CMAKE_BUILD_TYPE STREQUAL "Release")
+	set_target_properties(lasp_cpp PROPERTIES
+		CXX_VISIBILITY_PRESET "hidden"
+		VISIBILITY_INLINES_HIDDEN true)
+	if (CMAKE_SYSTEM_NAME MATCHES "Linux")
+		target_link_options(lasp_cpp PRIVATE "LINKER:--exclude-libs,ALL")
+	endif()
+endif()
+
 if(DEFINED PY_BUILD_CMAKE_MODULE_NAME)
     # Install the Python module
     install(TARGETS lasp_cpp
             EXCLUDE_FROM_ALL
             COMPONENT python_modules
             DESTINATION ${PY_BUILD_CMAKE_MODULE_NAME})
-    # Install the debug file for the Python module (Windows only)
-    if (WIN32)
-        install(FILES $<TARGET_PDB_FILE:_add_module>
-                EXCLUDE_FROM_ALL
-                COMPONENT python_modules
-                DESTINATION ${PY_BUILD_CMAKE_MODULE_NAME}
-                OPTIONAL)
-    endif()
+
 endif()
\ No newline at end of file
diff --git a/scripts/configure_cmake_msys2.sh b/scripts/copy_windows_dlls.sh
similarity index 53%
rename from scripts/configure_cmake_msys2.sh
rename to scripts/copy_windows_dlls.sh
index 353799b..abd79a6 100644
--- a/scripts/configure_cmake_msys2.sh
+++ b/scripts/copy_windows_dlls.sh
@@ -1,11 +1,9 @@
 #!/bin/bash
 #
-cmake . -G"Ninja" -DLASP_HAS_ULDAQ=OFF -DPython3_ROOT_DIR=C:\\winpython\\python-3.10.9.amd64
-arch=ucrt64
-#arch=mingw64
-
+arch=mingw64
+# DLL's that are required by lasp_cpp
 files_to_cpy="libfftw3-3.dll libgcc_s_seh-1.dll libgfortran-5.dll libgomp-1.dll libopenblas.dll libquadmath-0.dll libstdc++-6.dll libwinpthread-1.dll"
 
 for fn in ${files_to_cpy}; do
-	cp /c/msys64/${arch}/bin/${fn} src/lasp
+	cp /c/msys64/${arch}/bin/${fn} python_src/lasp
 done
diff --git a/scripts/install_msys2_builddeps.sh b/scripts/install_msys2_builddeps.sh
index 70bab8b..7ebda8f 100644
--- a/scripts/install_msys2_builddeps.sh
+++ b/scripts/install_msys2_builddeps.sh
@@ -5,8 +5,8 @@
 if [ -z $CI ]; then
     PACMAN_OPTIONS="--needed --noconfirm"
 fi
-# arch=mingw-w64-x86_64
-arch=mingw-w64-ucrt-x86_64
+arch=mingw-w64-x86_64
+# arch=mingw-w64-ucrt-x86_64
 
 pacman -S ${PACMAN_OPTIONS} make