diff --git a/config/tu_manifest.d/arm9/Actor.json b/config/tu_manifest.d/arm9/Actor.json
index 9b1cc2564e..46ad1947af 100644
--- a/config/tu_manifest.d/arm9/Actor.json
+++ b/config/tu_manifest.d/arm9/Actor.json
@@ -362,7 +362,7 @@
       "symbol": "_ZN8dActor_c13SpawnFireballERK7Vector3PK10Vector3_165Fix12IiES7_j",
       "address": "0x020102b0",
       "size": "0x00000054",
-      "legacy_source": "src/_ZN8dActor_c13SpawnFireballERK7Vector3PK10Vector3_165Fix12IiES7_j.c",
+      "legacy_source": "src/_ZN8dActor_c13SpawnFireballERK7Vector3PK10Vector3_165Fix12IiES7_j.cpp",
       "ordinal": 48
     },
     {
@@ -397,7 +397,7 @@
       "symbol": "_ZN8dActor_c12ReflectAngleE5Fix12IiES1_s",
       "address": "0x02010428",
       "size": "0x00000034",
-      "legacy_source": "src/_ZN8dActor_c12ReflectAngleE5Fix12IiES1_s.c",
+      "legacy_source": "src/_ZN8dActor_c12ReflectAngleE5Fix12IiES1_s.cpp",
       "ordinal": 53
     },
     {
@@ -411,7 +411,7 @@
       "symbol": "_ZN8dActor_c15IsPlayerInRangeE5Fix12IiES1_S1_i",
       "address": "0x02010498",
       "size": "0x00000044",
-      "legacy_source": "src/_ZN8dActor_c15IsPlayerInRangeE5Fix12IiES1_S1_i.c",
+      "legacy_source": "src/_ZN8dActor_c15IsPlayerInRangeE5Fix12IiES1_S1_i.cpp",
       "ordinal": 55
     },
     {
@@ -453,7 +453,7 @@
       "symbol": "_ZN8dActor_c10SpawnCoinsERK7Vector3j5Fix12IiEs",
       "address": "0x02010714",
       "size": "0x00000130",
-      "legacy_source": "src/_ZN8dActor_c10SpawnCoinsERK7Vector3j5Fix12IiEs.c",
+      "legacy_source": "src/_ZN8dActor_c10SpawnCoinsERK7Vector3j5Fix12IiEs.cpp",
       "ordinal": 61
     },
     {
@@ -523,14 +523,14 @@
       "symbol": "_ZN8dActor_c18DropShadowScaleXYZER11ShadowModelR9Matrix4x35Fix12IiES5_S5_j",
       "address": "0x02010b9c",
       "size": "0x0000004c",
-      "legacy_source": "src/_ZN8dActor_c18DropShadowScaleXYZER11ShadowModelR9Matrix4x35Fix12IiES5_S5_j.c",
+      "legacy_source": "src/_ZN8dActor_c18DropShadowScaleXYZER11ShadowModelR9Matrix4x35Fix12IiES5_S5_j.cpp",
       "ordinal": 71
     },
     {
       "symbol": "_ZN8dActor_c19DropShadowRadHeightER11ShadowModelR9Matrix4x35Fix12IiES5_j",
       "address": "0x02010be8",
       "size": "0x00000048",
-      "legacy_source": "src/_ZN8dActor_c19DropShadowRadHeightER11ShadowModelR9Matrix4x35Fix12IiES5_j.c",
+      "legacy_source": "src/_ZN8dActor_c19DropShadowRadHeightER11ShadowModelR9Matrix4x35Fix12IiES5_j.cpp",
       "ordinal": 72
     },
     {
@@ -670,7 +670,7 @@
       "symbol": "_ZN8dActor_cD0Ev",
       "address": "0x02011314",
       "size": "0x00000060",
-      "legacy_source": "src/_ZN8dActor_cD0Ev.c",
+      "legacy_source": "src/_ZN8dActor_cD0Ev.cpp",
       "ordinal": 92
     },
     {
diff --git a/config/tu_manifest.d/arm9/ActorDerived.json b/config/tu_manifest.d/arm9/ActorDerived.json
index 9f94ee2552..dc82a9b32b 100644
--- a/config/tu_manifest.d/arm9/ActorDerived.json
+++ b/config/tu_manifest.d/arm9/ActorDerived.json
@@ -35,7 +35,7 @@
       "symbol": "_ZN7dBase_cD0Ev",
       "address": "0x02013ea4",
       "size": "0x00000038",
-      "legacy_source": "src/_ZN7dBase_cD0Ev.c",
+      "legacy_source": "src/_ZN7dBase_cD0Ev.cpp",
       "ordinal": 1
     },
     {
diff --git a/config/tu_manifest.d/ov002/Platform.json b/config/tu_manifest.d/ov002/Platform.json
index c863276c7d..409c63f43d 100644
--- a/config/tu_manifest.d/ov002/Platform.json
+++ b/config/tu_manifest.d/ov002/Platform.json
@@ -37,7 +37,7 @@
       "symbol": "_ZN10dBgActor_c14KillByMegaCharER6Player",
       "address": "0x020ee4b0",
       "size": "0x000000ac",
-      "legacy_source": "src/_ZN10dBgActor_c14KillByMegaCharER6Player.c",
+      "legacy_source": "src/_ZN10dBgActor_c14KillByMegaCharER6Player.cpp",
       "ordinal": 2
     },
     {
@@ -93,7 +93,7 @@
       "symbol": "_ZN10dBgActor_cC2Ev",
       "address": "0x020eea50",
       "size": "0x00000034",
-      "legacy_source": "src/_ZN10dBgActor_cC2Ev.c",
+      "legacy_source": "src/_ZN10dBgActor_cC2Ev.cpp",
       "ordinal": 10
     }
   ],
diff --git a/config/tu_manifest.d/ov002/Warp.json b/config/tu_manifest.d/ov002/Warp.json
index 7cd24fa26f..b2cf10c8da 100644
--- a/config/tu_manifest.d/ov002/Warp.json
+++ b/config/tu_manifest.d/ov002/Warp.json
@@ -29,7 +29,7 @@
       "symbol": "_ZN4WarpD0Ev",
       "address": "0x020ec3b8",
       "size": "0x00000044",
-      "legacy_source": "src/_ZN4WarpD0Ev.c",
+      "legacy_source": "src/_ZN4WarpD0Ev.cpp",
       "ordinal": 1
     },
     {
diff --git a/config/tu_manifest.d/ov009/CastleWater.json b/config/tu_manifest.d/ov009/CastleWater.json
index 8b8ede2489..b937270119 100644
--- a/config/tu_manifest.d/ov009/CastleWater.json
+++ b/config/tu_manifest.d/ov009/CastleWater.json
@@ -22,14 +22,14 @@
       "symbol": "_ZN11CastleWaterD1Ev",
       "address": "0x02111a70",
       "size": "0x0000004c",
-      "legacy_source": "src/_ZN11CastleWaterD1Ev.c",
+      "legacy_source": "src/_ZN11CastleWaterD1Ev.cpp",
       "ordinal": 0
     },
     {
       "symbol": "_ZN11CastleWaterD0Ev",
       "address": "0x02111abc",
       "size": "0x00000060",
-      "legacy_source": "src/_ZN11CastleWaterD0Ev.c",
+      "legacy_source": "src/_ZN11CastleWaterD0Ev.cpp",
       "ordinal": 1
     },
     {
diff --git a/config/tu_manifest.d/ov009/Flag.json b/config/tu_manifest.d/ov009/Flag.json
index 0798939e9b..972d3f0905 100644
--- a/config/tu_manifest.d/ov009/Flag.json
+++ b/config/tu_manifest.d/ov009/Flag.json
@@ -29,14 +29,14 @@
       "symbol": "_ZN4FlagD0Ev",
       "address": "0x021120a8",
       "size": "0x00000044",
-      "legacy_source": "src/_ZN4FlagD0Ev.c",
+      "legacy_source": "src/_ZN4FlagD0Ev.cpp",
       "ordinal": 1
     },
     {
       "symbol": "_ZN4Flag16CleanupResourcesEv",
       "address": "0x021120ec",
       "size": "0x00000030",
-      "legacy_source": "src/_ZN4Flag16CleanupResourcesEv.c",
+      "legacy_source": "src/_ZN4Flag16CleanupResourcesEv.cpp",
       "ordinal": 2
     },
     {
diff --git a/config/tu_manifest.d/ov009/MetalNet.json b/config/tu_manifest.d/ov009/MetalNet.json
index 222e8a3f37..bb04fda100 100644
--- a/config/tu_manifest.d/ov009/MetalNet.json
+++ b/config/tu_manifest.d/ov009/MetalNet.json
@@ -43,7 +43,7 @@
       "symbol": "_ZN8MetalNet16OnPendingDestroyEv",
       "address": "0x02111ea4",
       "size": "0x00000004",
-      "legacy_source": "src/_ZN8MetalNet16OnPendingDestroyEv.c",
+      "legacy_source": "src/_ZN8MetalNet16OnPendingDestroyEv.cpp",
       "ordinal": 3
     },
     {
diff --git a/config/tu_manifest.d/ov010/LightBeam.json b/config/tu_manifest.d/ov010/LightBeam.json
index 8475115c75..0235724d9b 100644
--- a/config/tu_manifest.d/ov010/LightBeam.json
+++ b/config/tu_manifest.d/ov010/LightBeam.json
@@ -29,7 +29,7 @@
       "symbol": "_ZN9LightBeamD0Ev",
       "address": "0x02111a08",
       "size": "0x0000004c",
-      "legacy_source": "src/_ZN9LightBeamD0Ev.c",
+      "legacy_source": "src/_ZN9LightBeamD0Ev.cpp",
       "ordinal": 1
     },
     {
@@ -43,7 +43,7 @@
       "symbol": "_ZN9LightBeam16CleanupResourcesEv",
       "address": "0x02111a94",
       "size": "0x00000024",
-      "legacy_source": "src/_ZN9LightBeam16CleanupResourcesEv.c",
+      "legacy_source": "src/_ZN9LightBeam16CleanupResourcesEv.cpp",
       "ordinal": 3
     },
     {
diff --git a/config/tu_manifest.d/ov010/PeachPainting.json b/config/tu_manifest.d/ov010/PeachPainting.json
index 3180448326..717b753cac 100644
--- a/config/tu_manifest.d/ov010/PeachPainting.json
+++ b/config/tu_manifest.d/ov010/PeachPainting.json
@@ -29,7 +29,7 @@
       "symbol": "_ZN13PeachPaintingD0Ev",
       "address": "0x02111e40",
       "size": "0x00000044",
-      "legacy_source": "src/_ZN13PeachPaintingD0Ev.c",
+      "legacy_source": "src/_ZN13PeachPaintingD0Ev.cpp",
       "ordinal": 1
     },
     {
@@ -43,7 +43,7 @@
       "symbol": "_ZN13PeachPainting16CleanupResourcesEv",
       "address": "0x02111ec4",
       "size": "0x00000024",
-      "legacy_source": "src/_ZN13PeachPainting16CleanupResourcesEv.c",
+      "legacy_source": "src/_ZN13PeachPainting16CleanupResourcesEv.cpp",
       "ordinal": 3
     },
     {
diff --git a/config/tu_manifest.d/ov014/ShutterBob.json b/config/tu_manifest.d/ov014/ShutterBob.json
index 8be95c0eb0..cc0a859040 100644
--- a/config/tu_manifest.d/ov014/ShutterBob.json
+++ b/config/tu_manifest.d/ov014/ShutterBob.json
@@ -29,7 +29,7 @@
       "symbol": "_ZN10ShutterBobD0Ev",
       "address": "0x021111f0",
       "size": "0x00000064",
-      "legacy_source": "src/_ZN10ShutterBobD0Ev.c",
+      "legacy_source": "src/_ZN10ShutterBobD0Ev.cpp",
       "ordinal": 1
     },
     {
diff --git a/config/tu_manifest.d/ov019/IceSlideManager.json b/config/tu_manifest.d/ov019/IceSlideManager.json
index b24a2e43bb..c8b1400de7 100644
--- a/config/tu_manifest.d/ov019/IceSlideManager.json
+++ b/config/tu_manifest.d/ov019/IceSlideManager.json
@@ -29,7 +29,7 @@
       "symbol": "_ZN15IceSlideManagerD0Ev",
       "address": "0x02112640",
       "size": "0x00000038",
-      "legacy_source": "src/_ZN15IceSlideManagerD0Ev.c",
+      "legacy_source": "src/_ZN15IceSlideManagerD0Ev.cpp",
       "ordinal": 1
     },
     {
diff --git a/config/tu_manifest.d/ov019/RacingPenguin.json b/config/tu_manifest.d/ov019/RacingPenguin.json
index 112bcc323a..c520af2261 100644
--- a/config/tu_manifest.d/ov019/RacingPenguin.json
+++ b/config/tu_manifest.d/ov019/RacingPenguin.json
@@ -29,7 +29,7 @@
       "symbol": "_ZN13RacingPenguinD0Ev",
       "address": "0x021111f0",
       "size": "0x00000064",
-      "legacy_source": "src/_ZN13RacingPenguinD0Ev.c",
+      "legacy_source": "src/_ZN13RacingPenguinD0Ev.cpp",
       "ordinal": 1
     },
     {
@@ -197,7 +197,7 @@
       "symbol": "_ZN13RacingPenguin16OnPendingDestroyEv",
       "address": "0x0211235c",
       "size": "0x00000004",
-      "legacy_source": "src/_ZN13RacingPenguin16OnPendingDestroyEv.c",
+      "legacy_source": "src/_ZN13RacingPenguin16OnPendingDestroyEv.cpp",
       "ordinal": 25
     },
     {
diff --git a/config/tu_manifest.d/ov020/HauntedChair.json b/config/tu_manifest.d/ov020/HauntedChair.json
index 6460d0d00c..2d26dcc666 100644
--- a/config/tu_manifest.d/ov020/HauntedChair.json
+++ b/config/tu_manifest.d/ov020/HauntedChair.json
@@ -29,7 +29,7 @@
       "symbol": "_ZN12HauntedChairD0Ev",
       "address": "0x02112980",
       "size": "0x0000005c",
-      "legacy_source": "src/_ZN12HauntedChairD0Ev.c",
+      "legacy_source": "src/_ZN12HauntedChairD0Ev.cpp",
       "ordinal": 1
     },
     {
@@ -85,7 +85,7 @@
       "symbol": "_ZN12HauntedChair16CleanupResourcesEv",
       "address": "0x021132d8",
       "size": "0x00000024",
-      "legacy_source": "src/_ZN12HauntedChair16CleanupResourcesEv.c",
+      "legacy_source": "src/_ZN12HauntedChair16CleanupResourcesEv.cpp",
       "ordinal": 9
     },
     {
diff --git a/config/tu_manifest.d/ov029/CageLift.json b/config/tu_manifest.d/ov029/CageLift.json
index dc915aaf22..5716245f46 100644
--- a/config/tu_manifest.d/ov029/CageLift.json
+++ b/config/tu_manifest.d/ov029/CageLift.json
@@ -29,7 +29,7 @@
       "symbol": "_ZN8CageLiftD0Ev",
       "address": "0x02111b08",
       "size": "0x00000058",
-      "legacy_source": "src/_ZN8CageLiftD0Ev.c",
+      "legacy_source": "src/_ZN8CageLiftD0Ev.cpp",
       "ordinal": 1
     },
     {
diff --git a/config/tu_manifest.d/ov029/RotatingPlatformWdw.json b/config/tu_manifest.d/ov029/RotatingPlatformWdw.json
index 13f2e6cc48..6ee8acbf76 100644
--- a/config/tu_manifest.d/ov029/RotatingPlatformWdw.json
+++ b/config/tu_manifest.d/ov029/RotatingPlatformWdw.json
@@ -36,14 +36,14 @@
       "symbol": "_ZN19RotatingPlatformWdw16CleanupResourcesEv",
       "address": "0x02112134",
       "size": "0x00000014",
-      "legacy_source": "src/_ZN19RotatingPlatformWdw16CleanupResourcesEv.c",
+      "legacy_source": "src/_ZN19RotatingPlatformWdw16CleanupResourcesEv.cpp",
       "ordinal": 2
     },
     {
       "symbol": "_ZN19RotatingPlatformWdw13InitResourcesEv",
       "address": "0x02112148",
       "size": "0x00000020",
-      "legacy_source": "src/_ZN19RotatingPlatformWdw13InitResourcesEv.c",
+      "legacy_source": "src/_ZN19RotatingPlatformWdw13InitResourcesEv.cpp",
       "ordinal": 3
     },
     {
diff --git a/config/tu_manifest.d/ov029/SwitchActivatedPlank.json b/config/tu_manifest.d/ov029/SwitchActivatedPlank.json
index 9c57956837..bd53dbb504 100644
--- a/config/tu_manifest.d/ov029/SwitchActivatedPlank.json
+++ b/config/tu_manifest.d/ov029/SwitchActivatedPlank.json
@@ -22,14 +22,14 @@
       "symbol": "_ZN20SwitchActivatedPlankD1Ev",
       "address": "0x02112630",
       "size": "0x0000004c",
-      "legacy_source": "src/_ZN20SwitchActivatedPlankD1Ev.c",
+      "legacy_source": "src/_ZN20SwitchActivatedPlankD1Ev.cpp",
       "ordinal": 0
     },
     {
       "symbol": "_ZN20SwitchActivatedPlankD0Ev",
       "address": "0x0211267c",
       "size": "0x00000060",
-      "legacy_source": "src/_ZN20SwitchActivatedPlankD0Ev.c",
+      "legacy_source": "src/_ZN20SwitchActivatedPlankD0Ev.cpp",
       "ordinal": 1
     },
     {
diff --git a/config/tu_manifest.d/ov029/WaterDiamond.json b/config/tu_manifest.d/ov029/WaterDiamond.json
index f40405ac26..0872a23a44 100644
--- a/config/tu_manifest.d/ov029/WaterDiamond.json
+++ b/config/tu_manifest.d/ov029/WaterDiamond.json
@@ -29,7 +29,7 @@
       "symbol": "_ZN12WaterDiamondD0Ev",
       "address": "0x02111760",
       "size": "0x0000004c",
-      "legacy_source": "src/_ZN12WaterDiamondD0Ev.c",
+      "legacy_source": "src/_ZN12WaterDiamondD0Ev.cpp",
       "ordinal": 1
     },
     {
@@ -57,7 +57,7 @@
       "symbol": "_ZN12WaterDiamond16CleanupResourcesEv",
       "address": "0x02111908",
       "size": "0x00000024",
-      "legacy_source": "src/_ZN12WaterDiamond16CleanupResourcesEv.c",
+      "legacy_source": "src/_ZN12WaterDiamond16CleanupResourcesEv.cpp",
       "ordinal": 5
     },
     {
diff --git a/config/tu_manifest.d/ov062/KoopaFlag.json b/config/tu_manifest.d/ov062/KoopaFlag.json
index caa12180f5..f3b076f07b 100644
--- a/config/tu_manifest.d/ov062/KoopaFlag.json
+++ b/config/tu_manifest.d/ov062/KoopaFlag.json
@@ -29,7 +29,7 @@
       "symbol": "_ZN9KoopaFlagD0Ev",
       "address": "0x0211af70",
       "size": "0x0000004c",
-      "legacy_source": "src/_ZN9KoopaFlagD0Ev.c",
+      "legacy_source": "src/_ZN9KoopaFlagD0Ev.cpp",
       "ordinal": 1
     },
     {
@@ -43,7 +43,7 @@
       "symbol": "_ZN9KoopaFlag16CleanupResourcesEv",
       "address": "0x0211b000",
       "size": "0x00000030",
-      "legacy_source": "src/_ZN9KoopaFlag16CleanupResourcesEv.c",
+      "legacy_source": "src/_ZN9KoopaFlag16CleanupResourcesEv.cpp",
       "ordinal": 3
     },
     {
diff --git a/config/tu_manifest.d/ov077/Spiny.json b/config/tu_manifest.d/ov077/Spiny.json
index 4b34cbd98d..8ed8c8723e 100644
--- a/config/tu_manifest.d/ov077/Spiny.json
+++ b/config/tu_manifest.d/ov077/Spiny.json
@@ -29,7 +29,7 @@
       "symbol": "_ZN5SpinyD0Ev",
       "address": "0x02124bb4",
       "size": "0x00000064",
-      "legacy_source": "src/_ZN5SpinyD0Ev.c",
+      "legacy_source": "src/_ZN5SpinyD0Ev.cpp",
       "ordinal": 1
     },
     {
@@ -211,14 +211,14 @@
       "symbol": "_ZN5Spiny16CleanupResourcesEv",
       "address": "0x02125eb0",
       "size": "0x0000003c",
-      "legacy_source": "src/_ZN5Spiny16CleanupResourcesEv.c",
+      "legacy_source": "src/_ZN5Spiny16CleanupResourcesEv.cpp",
       "ordinal": 27
     },
     {
       "symbol": "_ZN5Spiny16OnPendingDestroyEv",
       "address": "0x02125eec",
       "size": "0x00000004",
-      "legacy_source": "src/_ZN5Spiny16OnPendingDestroyEv.c",
+      "legacy_source": "src/_ZN5Spiny16OnPendingDestroyEv.cpp",
       "ordinal": 28
     },
     {