diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 1f352bc55100..c486318c6073 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -258,38 +258,38 @@ endif()
 
 set(libwesnoth-lua_STAT_SRC
 	lua_jailbreak_exception.cpp
-	lua/lapi.c
-	lua/lbitlib.c
-	lua/lcode.c
-	lua/lcorolib.c
-	lua/lctype.c
-	lua/ldebug.c
-	lua/ldo.c
-	lua/ldump.c
-	lua/lfunc.c
-	lua/lgc.c
-	lua/llex.c
-	lua/lmem.c
-	lua/lobject.c
-	lua/lopcodes.c
-	lua/lparser.c
-	lua/lstate.c
-	lua/lstring.c
-	lua/ltable.c
-	lua/ltm.c
-	lua/lundump.c
-	lua/lvm.c
-	lua/lzio.c
-	lua/lauxlib.c
-	lua/lbaselib.c
-	lua/ldblib.c
-	lua/liolib.c
-	lua/lmathlib.c
-	lua/loslib.c
-	lua/ltablib.c
-	lua/lstrlib.c
-	lua/loadlib.c
-	lua/linit.c
+	lua/lapi.cpp
+	lua/lbitlib.cpp
+	lua/lcode.cpp
+	lua/lcorolib.cpp
+	lua/lctype.cpp
+	lua/ldebug.cpp
+	lua/ldo.cpp
+	lua/ldump.cpp
+	lua/lfunc.cpp
+	lua/lgc.cpp
+	lua/llex.cpp
+	lua/lmem.cpp
+	lua/lobject.cpp
+	lua/lopcodes.cpp
+	lua/lparser.cpp
+	lua/lstate.cpp
+	lua/lstring.cpp
+	lua/ltable.cpp
+	lua/ltm.cpp
+	lua/lundump.cpp
+	lua/lvm.cpp
+	lua/lzio.cpp
+	lua/lauxlib.cpp
+	lua/lbaselib.cpp
+	lua/ldblib.cpp
+	lua/liolib.cpp
+	lua/lmathlib.cpp
+	lua/loslib.cpp
+	lua/ltablib.cpp
+	lua/lstrlib.cpp
+	lua/loadlib.cpp
+	lua/linit.cpp
 )
 # We explicitly want lua compiled as C++ version, so this line is required:
 set_source_files_properties(${libwesnoth-lua_STAT_SRC} PROPERTIES LANGUAGE CXX)
diff --git a/src/lua/SConscript b/src/lua/SConscript
index 7dfc847d1ea1..09603519f4e1 100644
--- a/src/lua/SConscript
+++ b/src/lua/SConscript
@@ -2,38 +2,38 @@
 Import("env")
 lua_sources = Split("""
 ../lua_jailbreak_exception.cpp
-lapi.c                                               
-lbitlib.c
-lcode.c                                             
-lcorolib.c
-lctype.c
-ldebug.c
-ldo.c
-ldump.c
-lfunc.c
-lgc.c
-llex.c
-lmem.c
-lobject.c
-lopcodes.c
-lparser.c
-lstate.c
-lstring.c
-ltable.c
-ltm.c
-lundump.c
-lvm.c
-lzio.c
-lauxlib.c
-lbaselib.c
-ldblib.c
-liolib.c
-lmathlib.c
-loslib.c
-ltablib.c
-lstrlib.c
-loadlib.c
-linit.c
+lapi.cpp
+lbitlib.cpp
+lcode.cpp
+lcorolib.cpp
+lctype.cpp
+ldebug.cpp
+ldo.cpp
+ldump.cpp
+lfunc.cpp
+lgc.cpp
+llex.cpp
+lmem.cpp
+lobject.cpp
+lopcodes.cpp
+lparser.cpp
+lstate.cpp
+lstring.cpp
+ltable.cpp
+ltm.cpp
+lundump.cpp
+lvm.cpp
+lzio.cpp
+lauxlib.cpp
+lbaselib.cpp
+ldblib.cpp
+liolib.cpp
+lmathlib.cpp
+loslib.cpp
+ltablib.cpp
+lstrlib.cpp
+loadlib.cpp
+linit.cpp
 """)
 liblua = env.Library("lua", lua_sources, 
     CCCOM = env["CXXCOM"],
diff --git a/src/lua/lapi.c b/src/lua/lapi.cpp
similarity index 100%
rename from src/lua/lapi.c
rename to src/lua/lapi.cpp
diff --git a/src/lua/lauxlib.c b/src/lua/lauxlib.cpp
similarity index 100%
rename from src/lua/lauxlib.c
rename to src/lua/lauxlib.cpp
diff --git a/src/lua/lbaselib.c b/src/lua/lbaselib.cpp
similarity index 100%
rename from src/lua/lbaselib.c
rename to src/lua/lbaselib.cpp
diff --git a/src/lua/lbitlib.c b/src/lua/lbitlib.cpp
similarity index 100%
rename from src/lua/lbitlib.c
rename to src/lua/lbitlib.cpp
diff --git a/src/lua/lcode.c b/src/lua/lcode.cpp
similarity index 100%
rename from src/lua/lcode.c
rename to src/lua/lcode.cpp
diff --git a/src/lua/lcorolib.c b/src/lua/lcorolib.cpp
similarity index 100%
rename from src/lua/lcorolib.c
rename to src/lua/lcorolib.cpp
diff --git a/src/lua/lctype.c b/src/lua/lctype.cpp
similarity index 100%
rename from src/lua/lctype.c
rename to src/lua/lctype.cpp
diff --git a/src/lua/ldblib.c b/src/lua/ldblib.cpp
similarity index 100%
rename from src/lua/ldblib.c
rename to src/lua/ldblib.cpp
diff --git a/src/lua/ldebug.c b/src/lua/ldebug.cpp
similarity index 100%
rename from src/lua/ldebug.c
rename to src/lua/ldebug.cpp
diff --git a/src/lua/ldo.c b/src/lua/ldo.cpp
similarity index 100%
rename from src/lua/ldo.c
rename to src/lua/ldo.cpp
diff --git a/src/lua/ldump.c b/src/lua/ldump.cpp
similarity index 100%
rename from src/lua/ldump.c
rename to src/lua/ldump.cpp
diff --git a/src/lua/lfunc.c b/src/lua/lfunc.cpp
similarity index 100%
rename from src/lua/lfunc.c
rename to src/lua/lfunc.cpp
diff --git a/src/lua/lgc.c b/src/lua/lgc.cpp
similarity index 100%
rename from src/lua/lgc.c
rename to src/lua/lgc.cpp
diff --git a/src/lua/linit.c b/src/lua/linit.cpp
similarity index 100%
rename from src/lua/linit.c
rename to src/lua/linit.cpp
diff --git a/src/lua/liolib.c b/src/lua/liolib.cpp
similarity index 100%
rename from src/lua/liolib.c
rename to src/lua/liolib.cpp
diff --git a/src/lua/llex.c b/src/lua/llex.cpp
similarity index 100%
rename from src/lua/llex.c
rename to src/lua/llex.cpp
diff --git a/src/lua/lmathlib.c b/src/lua/lmathlib.cpp
similarity index 100%
rename from src/lua/lmathlib.c
rename to src/lua/lmathlib.cpp
diff --git a/src/lua/lmem.c b/src/lua/lmem.cpp
similarity index 100%
rename from src/lua/lmem.c
rename to src/lua/lmem.cpp
diff --git a/src/lua/loadlib.c b/src/lua/loadlib.cpp
similarity index 100%
rename from src/lua/loadlib.c
rename to src/lua/loadlib.cpp
diff --git a/src/lua/lobject.c b/src/lua/lobject.cpp
similarity index 100%
rename from src/lua/lobject.c
rename to src/lua/lobject.cpp
diff --git a/src/lua/lopcodes.c b/src/lua/lopcodes.cpp
similarity index 100%
rename from src/lua/lopcodes.c
rename to src/lua/lopcodes.cpp
diff --git a/src/lua/loslib.c b/src/lua/loslib.cpp
similarity index 100%
rename from src/lua/loslib.c
rename to src/lua/loslib.cpp
diff --git a/src/lua/lparser.c b/src/lua/lparser.cpp
similarity index 100%
rename from src/lua/lparser.c
rename to src/lua/lparser.cpp
diff --git a/src/lua/lstate.c b/src/lua/lstate.cpp
similarity index 100%
rename from src/lua/lstate.c
rename to src/lua/lstate.cpp
diff --git a/src/lua/lstring.c b/src/lua/lstring.cpp
similarity index 100%
rename from src/lua/lstring.c
rename to src/lua/lstring.cpp
diff --git a/src/lua/lstrlib.c b/src/lua/lstrlib.cpp
similarity index 100%
rename from src/lua/lstrlib.c
rename to src/lua/lstrlib.cpp
diff --git a/src/lua/ltable.c b/src/lua/ltable.cpp
similarity index 100%
rename from src/lua/ltable.c
rename to src/lua/ltable.cpp
diff --git a/src/lua/ltablib.c b/src/lua/ltablib.cpp
similarity index 100%
rename from src/lua/ltablib.c
rename to src/lua/ltablib.cpp
diff --git a/src/lua/ltm.c b/src/lua/ltm.cpp
similarity index 100%
rename from src/lua/ltm.c
rename to src/lua/ltm.cpp
diff --git a/src/lua/lua.c b/src/lua/lua.cpp
similarity index 100%
rename from src/lua/lua.c
rename to src/lua/lua.cpp
diff --git a/src/lua/luac.c b/src/lua/luac.cpp
similarity index 100%
rename from src/lua/luac.c
rename to src/lua/luac.cpp
diff --git a/src/lua/lundump.c b/src/lua/lundump.cpp
similarity index 100%
rename from src/lua/lundump.c
rename to src/lua/lundump.cpp
diff --git a/src/lua/lvm.c b/src/lua/lvm.cpp
similarity index 100%
rename from src/lua/lvm.c
rename to src/lua/lvm.cpp
diff --git a/src/lua/lzio.c b/src/lua/lzio.cpp
similarity index 100%
rename from src/lua/lzio.c
rename to src/lua/lzio.cpp