patch-CMakeLists.txt

--- CMakeLists.txt.orig	2020-06-11 07:02:00 UTC
+++ CMakeLists.txt
@@ -14,8 +14,17 @@ set(SOURCES
 )
 
 add_executable(${PROJECT_NAME} ${SOURCES})
+add_library(gds
+  src/gdsCpp.cpp
+  src/gdsParser.cpp
+  src/gdsForge.cpp
+  src/gdsImport.cpp
+)
 
 # Ensures that the header files of the project is included
 target_include_directories(${PROJECT_NAME} PRIVATE
+  ${PROJECT_SOURCE_DIR}/include/gdscpp
+)
+target_include_directories(gds PRIVATE
   ${PROJECT_SOURCE_DIR}/include/gdscpp
-)
\ No newline at end of file
+)