fix: Compile Lua as a C library (#5251)

CHANGELOG.md

@@ -164,6 +164,7 @@
 - Dev: Load less message history upon reconnects. (#5001, #5018)
 - Dev: Removed the `NullablePtr` class. (#5091)
 - Dev: BREAKING: Replace custom `import()` with normal Lua `require()`. (#5014, #5108)
+- Dev: Compile Lua as a C library. (#5251)
 - Dev: Fixed most compiler warnings. (#5028, #5137)
 - Dev: Added the ability to show `ChannelView`s without a `Split`. (#4747)
 - Dev: Refactor Args to be less of a singleton. (#5041)

lib/lua/CMakeLists.txt

@@ -50,4 +50,4 @@ target_include_directories(lua
     PUBLIC
     ${LUA_INCLUDE_DIRS}
 )
-set_source_files_properties(${LUA_SRC} PROPERTIES LANGUAGE CXX)
+set_source_files_properties(${LUA_SRC} PROPERTIES LANGUAGE C)

src/controllers/plugins/LuaAPI.cpp

@@ -9,9 +9,11 @@
 #    include "messages/MessageBuilder.hpp"
 #    include "providers/twitch/TwitchIrcServer.hpp"
 
+extern "C" {
 #    include <lauxlib.h>
 #    include <lua.h>
 #    include <lualib.h>
+}
 #    include <QFileInfo>
 #    include <QLoggingCategory>
 #    include <QTextCodec>

src/controllers/plugins/LuaAPI.hpp

@@ -2,7 +2,9 @@
 
 #ifdef CHATTERINO_HAVE_PLUGINS
 
+extern "C" {
 #    include <lua.h>
+}
 #    include <QString>
 
 #    include <cassert>

src/controllers/plugins/LuaUtilities.cpp

@@ -7,8 +7,10 @@
 #    include "controllers/plugins/api/ChannelRef.hpp"
 #    include "controllers/plugins/LuaAPI.hpp"
 
+extern "C" {
 #    include <lauxlib.h>
 #    include <lua.h>
+}
 
 #    include <climits>
 #    include <cstdlib>

src/controllers/plugins/LuaUtilities.hpp

@@ -4,8 +4,10 @@
 
 #    include "common/QLogging.hpp"
 
+extern "C" {
 #    include <lua.h>
 #    include <lualib.h>
+}
 #    include <magic_enum/magic_enum.hpp>
 #    include <QList>
 

src/controllers/plugins/Plugin.cpp

@@ -4,7 +4,9 @@
 #    include "common/QLogging.hpp"
 #    include "controllers/commands/CommandController.hpp"
 
+extern "C" {
 #    include <lua.h>
+}
 #    include <magic_enum/magic_enum.hpp>
 #    include <QJsonArray>
 #    include <QJsonObject>

src/controllers/plugins/PluginController.cpp

@@ -14,9 +14,11 @@
 #    include "singletons/Paths.hpp"
 #    include "singletons/Settings.hpp"
 
+extern "C" {
 #    include <lauxlib.h>
 #    include <lua.h>
 #    include <lualib.h>
+}
 #    include <QJsonDocument>
 
 #    include <memory>

src/controllers/plugins/api/ChannelRef.cpp

@@ -9,8 +9,10 @@
 #    include "providers/twitch/TwitchChannel.hpp"
 #    include "providers/twitch/TwitchIrcServer.hpp"
 
+extern "C" {
 #    include <lauxlib.h>
 #    include <lua.h>
+}
 
 #    include <cassert>
 #    include <memory>

src/controllers/plugins/api/IOWrapper.cpp

@@ -4,8 +4,11 @@
 #    include "Application.hpp"
 #    include "controllers/plugins/LuaUtilities.hpp"
 #    include "controllers/plugins/PluginController.hpp"
-#    include "lauxlib.h"
-#    include "lua.h"
+
+extern "C" {
+#    include <lauxlib.h>
+#    include <lua.h>
+}
 
 #    include <cerrno>