diff --git a/CMakeLists.txt b/CMakeLists.txt
index ebd6bd0..69d0196 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,7 +24,7 @@ set(LIBRARY_SOVERSION "4")
 
 # where to look first for cmake modules, before ${CMAKE_ROOT}/Modules/ is checked
 set(CMAKE_MODULE_PATH
-  ${CMAKE_SOURCE_DIR}/cmake/Modules
+  ${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules
 )
 
 # add definitions
diff --git a/CPackConfig.cmake b/CPackConfig.cmake
index 347d20a..ed09fd9 100644
--- a/CPackConfig.cmake
+++ b/CPackConfig.cmake
@@ -4,10 +4,10 @@
 ### general settings
 set(CPACK_PACKAGE_NAME ${APPLICATION_NAME})
 set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "The SSH library")
-set(CPACK_PACKAGE_DESCRIPTION_FILE "${CMAKE_SOURCE_DIR}/README")
+set(CPACK_PACKAGE_DESCRIPTION_FILE "${CMAKE_CURRENT_SOURCE_DIR}/README")
 set(CPACK_PACKAGE_VENDOR "The SSH Library Development Team")
 set(CPACK_PACKAGE_INSTALL_DIRECTORY ${CPACK_PACKAGE_NAME})
-set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_SOURCE_DIR}/COPYING")
+set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/COPYING")
 
 
 ### versions
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 5fd042d..e1c1b62 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,12 +1,12 @@
 project(libssh-library C)
 
 set(LIBSSH_PUBLIC_INCLUDE_DIRS
-  ${CMAKE_SOURCE_DIR}/include
+  ${CMAKE_CURRENT_SOURCE_DIR}/../include
   CACHE INTERNAL "libssh public include directories"
 )
 
 set(LIBSSH_PRIVATE_INCLUDE_DIRS
-  ${CMAKE_BINARY_DIR}
+  ${CMAKE_CURRENT_BINARY_DIR}/..
 )
 
 set(LIBSSH_LINK_LIBRARIES