diff --git a/CMLibCommon.cmake b/CMLibCommon.cmake
index 8e5ec18..f460e4e 100644
--- a/CMLibCommon.cmake
+++ b/CMLibCommon.cmake
@@ -49,5 +49,6 @@ include(CMLibToday)
 include(CMLibAuxilarySymlinks)
 include(CMLibConfigHPPGenerate)
 include(CMLibNinjaGeneratorHelper)
+include(CMLibExternalProject)
 include(CMLibCPack)
 include(CMLibUninstall)
diff --git a/CMLibExternalProject.cmake b/CMLibExternalProject.cmake
new file mode 100644
index 0000000..0dcaaee
--- /dev/null
+++ b/CMLibExternalProject.cmake
@@ -0,0 +1,46 @@
+include(ExternalProject)
+
+if(CMAKE_BUILD_TYPE)
+  list(APPEND CMLIB_EXT_PROJ_DEFAULT_ARGS -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE})
+endif()
+
+if(CMAKE_C_COMPILER)
+  list(APPEND CMLIB_EXT_PROJ_DEFAULT_ARGS -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER})
+endif()
+
+if(CMAKE_C_FLAGS)
+  list(APPEND CMLIB_EXT_PROJ_DEFAULT_ARGS -E env "CFLAGS=${CMAKE_C_FLAGS}")
+endif()
+
+if(CMAKE_CPP_COMPILER)
+  list(APPEND CMLIB_EXT_PROJ_DEFAULT_ARGS -DCMAKE_CPP_COMPILER=${CMAKE_CPP_COMPILER})
+endif()
+
+if(CMAKE_CXX_FLAGS)
+  list(APPEND CMLIB_EXT_PROJ_DEFAULT_ARGS -E env "CXXFLAGS=${CMAKE_CXX_FLAGS}")
+endif()
+
+if(CMAKE_Fortran_COMPILER)
+  list(APPEND CMLIB_EXT_PROJ_DEFAULT_ARGS -DCMAKE_Fortran_COMPILER=${CMAKE_Fortran_COMPILER})
+endif()
+
+if(CMAKE_Fortran_FLAGS)
+  list(APPEND CMLIB_EXT_PROJ_DEFAULT_ARGS -E env "FFLAGS=${CMAKE_Fortran_FLAGS}")
+endif()
+
+if(CMAKE_INSTALL_PREFIX)
+  list(APPEND CMLIB_EXT_PROJ_DEFAULT_ARGS -DCMAKE_INSTALL_PREFIX=${CMAKE_BINARY_DIR})
+endif()
+
+if(CMAKE_PREFIX_PATH)
+  list(APPEND CMLIB_EXT_PROJ_DEFAULT_ARGS -DCMAKE_PREFIX_PATH=${CMAKE_PREFIX_PATH})
+endif()
+
+if(Qt5_DIR)
+  list(APPEND CMLIB_EXT_PROJ_DEFAULT_ARGS -DQt5_DIR=${Qt5_DIR})
+endif()
+
+if(Qt5Core_DIR)
+  list(APPEND CMLIB_EXT_PROJ_DEFAULT_ARGS -DQt5Core_DIR=${Qt5Core_DIR})
+endif()
+
diff --git a/CMLibFormatSources.cmake b/CMLibFormatSources.cmake
index 0a80e14..6c4a3c0 100644
--- a/CMLibFormatSources.cmake
+++ b/CMLibFormatSources.cmake
@@ -10,7 +10,7 @@ function(add_format_sources target)
 
   find_program(UNCRUSTIFY_EXE NAMES uncrustify)
   if(UNCRUSTIFY_EXE)
-    list(APPEND UNCRUSTIFY_OPTS -lCPP --replace --no-backup)
+    list(APPEND UNCRUSTIFY_OPTS --replace --no-backup)
     if(EXISTS ${CMAKE_SOURCE_DIR}/cmake/etc/uncrustify/default.cfg)
       list(APPEND UNCRUSTIFY_OPTS -c ${CMAKE_SOURCE_DIR}/cmake/etc/uncrustify/default.cfg)
     endif()