build: allow symlink-preferred install

CMakeLists.txt

@@ -51,14 +51,15 @@ add_subdirectory(example)
 # output targets
 
 set(SELF_LIB randomgen)
-add_library(${SELF_LIB} INTERFACE)
-xo_include_headeronly_options2(${SELF_LIB})
+xo_add_headeronly_library(${SELF_LIB})
+#add_library(${SELF_LIB} INTERFACE)
+#xo_include_headeronly_options2(${SELF_LIB})
 
 # ----------------------------------------------------------------
 # standard install + provide find_package() support
 
-xo_install_library2(${SELF_LIB})
-xo_install_include_tree()
+xo_install_library4(${SELF_LIB} ${PROJECT_NAME}Targets)
+#xo_install_include_tree()
 xo_export_cmake_config(${PROJECT_NAME} ${PROJECT_VERSION} ${PROJECT_NAME}Targets)
 
 # ----------------------------------------------------------------

README.md

@@ -1,7 +1,12 @@
 # random number generators
 
-# to build + install locally
+## Getting Started
 
+### build + install dependencies
+
+- see [github/Rconybea/cmake](https://github.com/Rconybea/xo-cmake) -- cmake modules
+
+### to build + install locally
 ```
 $ cd randomgen
 $ mkdir build