Fixing build.

1 files changed, 30 insertions, 0 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 613019e..9149ec5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,36 @@
 cmake_minimum_required(VERSION 3.10)
 project(yue CXX)
 
+include(FetchContent)
+
+execute_process(
+        COMMAND ${LUA} -v
+        OUTPUT_VARIABLE LUA_VERSION_OUTPUT
+        ERROR_VARIABLE LUA_VERSION_OUTPUT
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+
+string(REGEX MATCH "Lua ([0-9]+)\\.([0-9]+)\\.([0-9]+)" LUA_VERSION_MATCH ${LUA_VERSION_OUTPUT})
+set(LUA_VERSION "${CMAKE_MATCH_1}.${CMAKE_MATCH_2}.${CMAKE_MATCH_3}")
+
+set(LUA_TARBALL_URL "https://www.lua.org/ftp/lua-${LUA_VERSION}.tar.gz")
+
+message(STATUS "Detected Lua version: ${LUA_VERSION}")
+message(STATUS "Downloading Lua source from: ${LUA_TARBALL_URL}")
+
+FetchContent_Declare(
+        lua_source
+        URL ${LUA_TARBALL_URL}
+)
+
+FetchContent_MakeAvailable(lua_source)
+
+set(LUA_SOURCE_DIR "${lua_source_SOURCE_DIR}")
+
+include_directories(${LUA_SOURCE_DIR}/src)
+
+message(STATUS "Lua source directory: ${LUA_SOURCE_DIR}/src")
+
 set(LUA_LIBDIR ${LUA_INCDIR}/../lib ${LUA_INCDIR}/../../lib)
 set(LUA_INCLUDE_DIR "${LUA_INCDIR}")