docu

CMakeLists.txt

 cmake_minimum_required (VERSION 3.10)
+cmake_project (corsika-data 1.0.0)
 
-# this is not intended to build standalone
-# please include it in our project to access corsika-data by adding
-# add_directory(corsika-data)
+# this may be included in our project to access corsika-data by adding
+# add_subdirectory (corsika-data)
 # to your CMakeLists.txt
+# it creates the cmake taget "CorsikaData"
+# and it builds the libCorsikaData.a archive.
 
 add_subdirectory (readLib)
-

README.md

@@ -3,6 +3,10 @@
 New place to keep all the CORSIKA7, CORSIKA8, CONEX, CRMC etc. large
 data files.
 
+The project contains cmake build files. It can be included in our project to access corsika-data by adding
+`add_subdirectory (corsika-data)` to your CMakeLists.txt. 
+This creates the cmake taget "CorsikaData" and it builds the libCorsikaData.a archive. 
+
 
 Update, July 2020, RU
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