From 85f515a9f00a26ada686b08a60c60db8a8ef5623 Mon Sep 17 00:00:00 2001
From: Walter Schell <walterschell@users.noreply.github.com>
Date: Tue, 30 Jun 2020 08:52:34 -0400
Subject: [PATCH] Added CMake build

---
 CMakeLists.txt           | 20 ++++++++++--
 lua-5.4.0/CMakeLists.txt | 68 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 86 insertions(+), 2 deletions(-)
 create mode 100644 lua-5.4.0/CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3b64aed..e9b7cac 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,3 +1,19 @@
 cmake_minimum_required(VERSION 3.1)
-project(lua C)
-add_subdirectory(lua-5.3.3)    
+project(lua LANGUAGES C VERSION 5.4.0)
+
+if(${PROJECT_NAME} STREQUAL ${CMAKE_PROJECT_NAME})
+    set(TOP_LEVEL TRUE)
+else()
+    set(TOP_LEVEL FALSE)
+endif()
+
+if(TOP_LEVEL)
+    option(LUA_BUILD_BINARY "Build lua binary" ON)
+    option(LUA_BUILD_COMPILER "Build luac compiler" ON)
+else()
+    option(LUA_BUILD_BINARY "Build lua binary" OFF)
+    option(LUA_BUILD_COMPILER "Build luac compiler" ON)
+endif()
+
+
+add_subdirectory(lua-5.4.0)
diff --git a/lua-5.4.0/CMakeLists.txt b/lua-5.4.0/CMakeLists.txt
new file mode 100644
index 0000000..7c7c9e1
--- /dev/null
+++ b/lua-5.4.0/CMakeLists.txt
@@ -0,0 +1,68 @@
+set(LUA_LIB_SRCS 
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/lapi.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/lcode.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/lctype.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/ldebug.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/ldo.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/ldump.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/lfunc.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/lgc.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/llex.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/lmem.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/lobject.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/lopcodes.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/lparser.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/lstate.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/lstring.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/ltable.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/ltm.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/lundump.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/lvm.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/lzio.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/lauxlib.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/lbaselib.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/lcorolib.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/ldblib.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/liolib.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/lmathlib.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/loadlib.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/loslib.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/lstrlib.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/ltablib.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/lutf8lib.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/linit.c
+)
+set(LUA_LIB_INCLUDE ${CMAKE_CURRENT_SOURCE_DIR}/src)
+#TODO: Redo this with find_package
+find_library(LIBM m)
+if(NOT LIBM)
+    message(FATAL_ERROR "libm not found and requred by lua")
+endif()
+add_library(lua_static STATIC ${LUA_LIB_SRCS})
+target_link_libraries(lua_static INTERFACE ${LIBM})
+target_include_directories(lua_static PUBLIC ${LUA_LIB_INCLUDE})
+set(LUA_DEFINITIONS)
+if(NOT EMSCRIPTEN)
+    list(APPEND LUA_DEFINITIONS LUA_USE_POSIX)
+endif()
+target_compile_definitions(lua_static 
+    PUBLIC ${LUA_DEFINITIONS}
+)
+target_compile_options(lua_static
+    PRIVATE "-Wall" "-Wextra"
+)
+
+if(LUA_BUILD_BINARY)
+    add_executable(lua ${CMAKE_CURRENT_SOURCE_DIR}/src/lua.c)
+    target_link_libraries(lua PUBLIC lua_static)
+    set_target_properties(lua PROPERTIES 
+        RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}
+    )
+endif()
+if(LUA_BUILD_COMPILER)
+    add_executable(luac ${CMAKE_CURRENT_SOURCE_DIR}/src/luac.c)
+    target_link_libraries(luac PUBLIC lua_static)
+    set_target_properties(luac PROPERTIES 
+        RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}
+    )
+endif()
\ No newline at end of file