diff --git a/CMakeLists.txt b/CMakeLists.txt
index b1a88ec..273c968 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,34 +15,33 @@ set(WUT_ROOT ${CMAKE_CURRENT_SOURCE_DIR})
 set(WUT_TOOLCHAIN "${CMAKE_CURRENT_SOURCE_DIR}/share/wut.toolchain.cmake")
 set(WUT_STAGING "${CMAKE_BINARY_DIR}/staging")
 
+set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib")
+set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY_DEBUG "${CMAKE_BINARY_DIR}/lib")
+set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY_RELEASE "${CMAKE_BINARY_DIR}/lib")
+
+set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib")
+set(CMAKE_LIBRARY_OUTPUT_DIRECTORY_DEBUG "${CMAKE_BINARY_DIR}/lib")
+set(CMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE "${CMAKE_BINARY_DIR}/lib")
+
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG "${CMAKE_BINARY_DIR}/bin")
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_RELEASE "${CMAKE_BINARY_DIR}/bin")
+
 if(WUT_BUILD_DOCS)
    add_subdirectory(docs)
 endif()
 
-externalproject_add(tools
-   SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/tools"
-   INSTALL_DIR "${WUT_STAGING}"
-   CMAKE_CACHE_ARGS
-      -DCMAKE_C_COMPILER:string=${CMAKE_C_COMPILER}
-      -DCMAKE_C_FLAGS:string=${CMAKE_C_FLAGS}
-      -DCMAKE_CXX_COMPILER:string=${CMAKE_CXX_COMPILER}
-      -DCMAKE_CXX_FLAGS:string=${CMAKE_CXX_FLAGS}
-      -DCMAKE_INSTALL_PREFIX:string=<INSTALL_DIR>
-   BUILD_ALWAYS 1)
-externalproject_get_property(tools BINARY_DIR)
-set(TOOLS_BINARY_DIR ${BINARY_DIR})
-
-set(WUT_RPLGEN "${TOOLS_BINARY_DIR}/bin/rplgen")
+add_subdirectory(tools)
 
 externalproject_add(cafe
    SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/cafe"
    INSTALL_DIR "${WUT_STAGING}"
    CMAKE_CACHE_ARGS
-      -DWUT_RPLGEN:filepath=${WUT_RPLGEN}
+      -DWUT_RPLGEN:filepath=$<TARGET_FILE:rplgen>
       -DWUT_ROOT:filepath=${WUT_ROOT}
       -DCMAKE_TOOLCHAIN_FILE:filepath=${WUT_TOOLCHAIN}
       -DCMAKE_INSTALL_PREFIX:string=<INSTALL_DIR>
-   DEPENDS tools
+   DEPENDS rplgen
    BUILD_ALWAYS 1)
 
 externalproject_add(libraries
diff --git a/tools/CMakeLists.txt b/tools/CMakeLists.txt
index 7831975..c75ea28 100644
--- a/tools/CMakeLists.txt
+++ b/tools/CMakeLists.txt
@@ -1,10 +1,5 @@
-cmake_minimum_required(VERSION 3.2)
 project(tools)
 
-set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
-set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
-set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
-
 if(MSVC)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /std:c++latest")
 elseif(APPLE)