[misc] Add default values of TI_VERSION (taichi-dev#3459)

* [misc] Add default values of TI_VERSION * add warning
zerolyj · Nov 11, 2021 · 153f338 · 153f338
1 parent 6f483b5
commit 153f338
Showing 1 changed file with 7 additions and 3 deletions.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -5,9 +5,13 @@
 cmake_minimum_required(VERSION 3.12)
 
 project(taichi)
-SET(TI_VERSION_MAJOR ${TI_VERSION_MAJOR})
-SET(TI_VERSION_MINOR ${TI_VERSION_MINOR})
-SET(TI_VERSION_PATCH ${TI_VERSION_PATCH})
+
+if (NOT DEFINED TI_VERSION_MAJOR)
+    message(WARNING "It seems that you are running cmake manually, which may cause issues. Please use setup.py to build taichi from source, see https://docs.taichi.graphics/lang/articles/contribution/dev_install for more details.")
+    set(TI_VERSION_MAJOR 0)
+    set(TI_VERSION_MINOR 0)
+    set(TI_VERSION_PATCH 0)
+endif()
 
 set(CMAKE_CXX_STANDARD 17)