Install more public header files

libtcc/CMakeLists.txt

@@ -2,8 +2,8 @@
 add_library(tcc)
 # Add source files
 target_sources(tcc PRIVATE Correlator.cc CorrelatorKernel.cc Kernel.cc)
-# Add public header
-set_target_properties(tcc PROPERTIES PUBLIC_HEADER Correlator.h)
+# Add public headers
+set_target_properties(tcc PROPERTIES PUBLIC_HEADER "Correlator.h;CorrelatorKernel.h;Kernel.h")
 # Add includes
 target_include_directories(
   tcc PUBLIC $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME}>