🔨 Disallow in source build

OlivierLDff · Aug 29, 2021 · 0d85845 · 0d85845
1 parent 417559f
commit 0d85845
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -14,6 +14,14 @@
 
 cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
 
+# ──── Include guards ────
+
+if(PROJECT_SOURCE_DIR STREQUAL PROJECT_BINARY_DIR)
+  message(FATAL_ERROR "In-source builds not allowed. " "Please make a new directory (called a build directory) and run CMake from there.")
+endif()
+
+# ──── Main Project behavior ────
+
 set(QOLM_MAIN_PROJECT OFF)
 if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
   set(QOLM_MAIN_PROJECT ON)