Require only C++ compiler

Author: dantti

CMakeLists.txt

@@ -1,5 +1,7 @@
 cmake_minimum_required(VERSION 3.9)
-project(kdalgorithms)
+project(kdalgorithms
+    LANGUAGES CXX
+)
 
 if(POLICY CMP0077) # Yes, let the parent project set BUILD_TESTING before we include CTest.cmake below
   cmake_policy(SET CMP0077 NEW)

CMakePresets.json

@@ -33,7 +33,6 @@
         "name": "gcc",
         "hidden": true,
         "cacheVariables": {
-            "CMAKE_C_COMPILER": "gcc",
             "CMAKE_CXX_COMPILER": "g++"
         },
         "binaryDir": "${sourceDir}/build/${presetName}"
@@ -42,7 +41,6 @@
         "name": "clang",
         "hidden": true,
         "cacheVariables": {
-            "CMAKE_C_COMPILER": "clang",
             "CMAKE_CXX_COMPILER": "clang++"
         },
         "binaryDir": "${sourceDir}/build/${presetName}"