Made it possible to disable tests.

CMakeLists.txt

@@ -8,8 +8,10 @@ add_library(interval-tree INTERFACE)
 
 target_include_directories(interval-tree INTERFACE ./include)
 
-if(DRAW_EXAMPLES)
+if(INT_TREE_DRAW_EXAMPLES)
     add_subdirectory(cairo-wrap)
     add_subdirectory(drawings)
 endif()
-add_subdirectory(tests)
+if (INT_TREE_ENABLE_TESTS)
+    add_subdirectory(tests)
+endif()

README.md

@@ -49,7 +49,7 @@ int main()
 Having googletest (find here on github) installed / built is a requirement to run the tests.
 Create a build folder, navigate there, run cmake and build the tree-tests target.
 You might have to adapt the linker line for gtest, if you built it yourself and didn't install it into your system.
-If you want to generate the pretty drawings, install cairo, pull the submodule and pass DRAW_EXAMPLES=on to the cmake command line to generate a drawings/make_drawings executeable.
+If you want to generate the pretty drawings, install cairo, pull the submodule and pass INT_TREE_DRAW_EXAMPLES=on to the cmake command line to generate a drawings/make_drawings executeable.
 
 ## Free Functions
 ### interval<NumericT, Kind> make_safe_interval(NumericT border1, NumericT border2)

cmake/options.cmake

@@ -1 +1,2 @@
-option(DRAW_EXAMPLES "Draws some examples in a subdirectory. run make_drawable.sh before this" OFF )
+option(INT_TREE_DRAW_EXAMPLES "Draws some examples in a subdirectory. run make_drawable.sh before this" OFF)
+option(INT_TREE_ENABLE_TESTS "Enable tests?" ON)