diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2befb7a..e4ac8f5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -125,6 +125,11 @@ add_library(athena-sakura EXCLUDE_FROM_ALL
     include/athena/SpritePart.hpp
 )
 
+target_include_directories(athena-sakura PUBLIC
+   $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+   $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/extern/fmt/include>
+)
+
 add_library(athena-wiisave EXCLUDE_FROM_ALL
     src/athena/WiiBanner.cpp
     src/athena/WiiFile.cpp
@@ -154,6 +159,10 @@ if(NOT MSVC AND NOT GEKKO AND NOT NX)
     set_source_files_properties(src/aes.cpp PROPERTIES COMPILE_FLAGS -maes)
 endif()
 
+target_include_directories(athena-wiisave PUBLIC
+   $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+   $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/extern/fmt/include>
+)
 
 add_library(athena-zelda EXCLUDE_FROM_ALL
     src/athena/ALTTPFile.cpp
@@ -190,6 +199,11 @@ add_library(athena-zelda EXCLUDE_FROM_ALL
     include/athena/ZQuestFileWriter.hpp
 )
 
+target_include_directories(athena-zelda PUBLIC
+   $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+   $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/extern/fmt/include>
+)
+
 # Icon
 set(ATHENA_ICO ${CMAKE_CURRENT_SOURCE_DIR}/Athena.ico)
 
diff --git a/src/athena/ALTTPFile.cpp b/src/athena/ALTTPFile.cpp
index ac97988..30ed87c 100644
--- a/src/athena/ALTTPFile.cpp
+++ b/src/athena/ALTTPFile.cpp
@@ -9,7 +9,7 @@ ALTTPFile::ALTTPFile(std::vector<ALTTPQuest*> quests, std::vector<ALTTPQuest*> b
 
 void ALTTPFile::setQuest(atUint32 id, ALTTPQuest* val) {
   if (id > m_quests.size()) {
-    atWarning("index out of range");
+    atWarning(fmt("index out of range"));
     return;
   }
 
@@ -19,7 +19,7 @@ void ALTTPFile::setQuest(atUint32 id, ALTTPQuest* val) {
 std::vector<ALTTPQuest*> ALTTPFile::questList() const { return m_quests; }
 ALTTPQuest* ALTTPFile::quest(atUint32 id) const {
   if (id > m_quests.size()) {
-    atWarning("index out of range");
+    atWarning(fmt("index out of range"));
     return nullptr;
   }
 
diff --git a/src/athena/ALTTPFileReader.cpp b/src/athena/ALTTPFileReader.cpp
index feeea49..de8912b 100644
--- a/src/athena/ALTTPFileReader.cpp
+++ b/src/athena/ALTTPFileReader.cpp
@@ -211,7 +211,7 @@ ALTTPDungeonItemFlags ALTTPFileReader::readDungeonFlags() {
   flags.HyruleCastle = (flagsByte >> 6) & 1;
   flags.SewerPassage = (flagsByte >> 7) & 1;
 
-  atDebug("{:x} {:x}", flags.flags1, flags.flags2);
+  atDebug(fmt("{:x} {:x}"), flags.flags1, flags.flags2);
   return flags;
 }
 
diff --git a/src/athena/ALTTPQuest.cpp b/src/athena/ALTTPQuest.cpp
index e2ef984..ba96ec5 100644
--- a/src/athena/ALTTPQuest.cpp
+++ b/src/athena/ALTTPQuest.cpp
@@ -29,7 +29,7 @@ std::vector<ALTTPOverworldEvent*> ALTTPQuest::overworldEvents() const { return m
 
 ALTTPOverworldEvent* ALTTPQuest::overworldEvent(atUint32 id) const {
   if (id > m_overworldEvents.size() - 1) {
-    atWarning("index out of range");
+    atWarning(fmt("index out of range"));
     return nullptr;
   }
 
@@ -126,7 +126,7 @@ void ALTTPQuest::setDungeonKeys(std::vector<atUint8> val) { m_dungeonKeys = val;
 
 void ALTTPQuest::setDungeonKeys(atUint32 id, atUint8 val) {
   if (id > m_dungeonKeys.size() - 1) {
-    atWarning("index out of range");
+    atWarning(fmt("index out of range"));
     return;
   }
 
@@ -135,7 +135,7 @@ void ALTTPQuest::setDungeonKeys(atUint32 id, atUint8 val) {
 
 atUint8 ALTTPQuest::dungeonKeys(atUint32 id) const {
   if (id > m_dungeonKeys.size() - 1) {
-    atWarning("index out of range");
+    atWarning(fmt("index out of range"));
     return 0;
   }
 
@@ -176,7 +176,7 @@ void ALTTPQuest::setOldManFlags(std::vector<atUint8> flags) { m_oldManFlags = fl
 
 void ALTTPQuest::setOldManFlag(atUint32 id, atUint8 val) {
   if (id > m_oldManFlags.size() - 1) {
-    atWarning("index out of range");
+    atWarning(fmt("index out of range"));
     return;
   }
 
@@ -185,7 +185,7 @@ void ALTTPQuest::setOldManFlag(atUint32 id, atUint8 val) {
 
 atUint8 ALTTPQuest::oldManFlag(atUint32 id) {
   if (id > m_oldManFlags.size() - 1) {
-    atWarning("index out of range");
+    atWarning(fmt("index out of range"));
     return 0;
   }
   return m_oldManFlags[id];
@@ -201,7 +201,7 @@ void ALTTPQuest::setUnknown1(std::vector<atUint8> flags) { m_unknown1 = flags; }
 
 void ALTTPQuest::setUnknown1(atUint32 id, atUint8 val) {
   if (id > m_unknown1.size()) {
-    atWarning("index out of range");
+    atWarning(fmt("index out of range"));
     return;
   }
 
@@ -210,7 +210,7 @@ void ALTTPQuest::setUnknown1(atUint32 id, atUint8 val) {
 
 atUint8 ALTTPQuest::unknown1(atUint32 id) {
   if (id > m_unknown1.size()) {
-    atWarning("index out of range");
+    atWarning(fmt("index out of range"));
     return 0;
   }
 
@@ -223,7 +223,7 @@ void ALTTPQuest::setPlayerName(std::vector<atUint16> playerName) { m_playerName
 
 void ALTTPQuest::setPlayerName(const std::string& playerName) {
   if (playerName == std::string() || playerName.size() > 6) {
-    atWarning("index out of range");
+    atWarning(fmt("index out of range"));
     return;
   }
 
@@ -401,7 +401,7 @@ void ALTTPQuest::setDungeonDeathTotals(std::vector<atUint16> val) { m_dungeonDea
 
 void ALTTPQuest::setDungeonDeathTotal(atUint32 id, atUint16 val) {
   if (id > m_dungeonDeathTotals.size()) {
-    atWarning("index out of range");
+    atWarning(fmt("index out of range"));
     return;
   }
 
@@ -410,7 +410,7 @@ void ALTTPQuest::setDungeonDeathTotal(atUint32 id, atUint16 val) {
 
 atUint16 ALTTPQuest::dungeonDeathTotal(atUint32 id) const {
   if (id > m_dungeonDeathTotals.size()) {
-    atWarning("index out of range");
+    atWarning(fmt("index out of range"));
     return 0;
   }
 
diff --git a/src/athena/SkywardSwordFile.cpp b/src/athena/SkywardSwordFile.cpp
index eba259b..0f09938 100644
--- a/src/athena/SkywardSwordFile.cpp
+++ b/src/athena/SkywardSwordFile.cpp
@@ -19,7 +19,7 @@ void SkywardSwordFile::addQuest(athena::SkywardSwordQuest* q) {
 
 SkywardSwordQuest* SkywardSwordFile::quest(atUint32 id) {
   if (id > m_quests.size() - 1) {
-    atWarning("index out of range");
+    atWarning(fmt("index out of range"));
     return nullptr;
   }
 
diff --git a/src/athena/SkywardSwordFileReader.cpp b/src/athena/SkywardSwordFileReader.cpp
index 67b81ba..bb54055 100644
--- a/src/athena/SkywardSwordFileReader.cpp
+++ b/src/athena/SkywardSwordFileReader.cpp
@@ -17,14 +17,14 @@ SkywardSwordFile* SkywardSwordFileReader::read() {
   SkywardSwordFile* file = NULL;
 
   if (length() != 0xFBE0) {
-    atError("File not the expected size of 0xFBE0");
+    atError(fmt("File not the expected size of 0xFBE0"));
     return nullptr;
   }
 
   atUint32 magic = readUint32();
 
   if (magic != SkywardSwordFile::USMagic && magic != SkywardSwordFile::JAMagic && magic != SkywardSwordFile::EUMagic) {
-    atError("Not a valid Skyward Sword save file");
+    atError(fmt("Not a valid Skyward Sword save file"));
     return nullptr;
   }
 
@@ -32,7 +32,7 @@ SkywardSwordFile* SkywardSwordFileReader::read() {
   atUint32 headerSize = readUint32(); // Seems to be (headerSize - 1)
 
   if (headerSize != 0x1D) {
-    atError("Invalid header size, Corrupted data?");
+    atError(fmt("Invalid header size, Corrupted data?"));
     return nullptr;
   }
 
diff --git a/src/athena/SkywardSwordFileWriter.cpp b/src/athena/SkywardSwordFileWriter.cpp
index d76d93e..394c3d8 100644
--- a/src/athena/SkywardSwordFileWriter.cpp
+++ b/src/athena/SkywardSwordFileWriter.cpp
@@ -14,7 +14,7 @@ SkywardSwordFileWriter::SkywardSwordFileWriter(const std::string& filename) : Me
 
 void SkywardSwordFileWriter::write(SkywardSwordFile* file) {
   if (!file) {
-    atError("file cannot be NULL");
+    atError(fmt("file cannot be NULL"));
     return;
   }
 
@@ -31,7 +31,7 @@ void SkywardSwordFileWriter::write(SkywardSwordFile* file) {
 
   for (SkywardSwordQuest* q : quests) {
     if (q->length() != 0x53C0) {
-      atError("q->data() not 0x53C0 bytes in length");
+      atError(fmt("q->data() not 0x53C0 bytes in length"));
       return;
     }
 
diff --git a/src/athena/SkywardSwordQuest.cpp b/src/athena/SkywardSwordQuest.cpp
index f9604d2..61cba31 100644
--- a/src/athena/SkywardSwordQuest.cpp
+++ b/src/athena/SkywardSwordQuest.cpp
@@ -43,7 +43,7 @@ atUint8* SkywardSwordQuest::skipData() const { return m_skipData.get(); }
 
 void SkywardSwordQuest::setPlayerName(const std::string& name) {
   if (name.length() > 8)
-    atDebug("WARNING: name cannot be greater than 8 characters, automatically truncating");
+    atDebug(fmt("WARNING: name cannot be greater than 8 characters, automatically truncating"));
 
   const utf8proc_uint8_t* buf = reinterpret_cast<const utf8proc_uint8_t*>(name.c_str());
   for (atUint32 i = 0; i < 8; i++) {
@@ -57,7 +57,7 @@ void SkywardSwordQuest::setPlayerName(const std::string& name) {
     utf8proc_int32_t wc;
     utf8proc_ssize_t len = utf8proc_iterate(buf, -1, &wc);
     if (len < 0) {
-      atError("invalid UTF-8 string");
+      atError(fmt("invalid UTF-8 string"));
       return;
     }
     buf += len;
diff --git a/src/athena/SpriteFileReader.cpp b/src/athena/SpriteFileReader.cpp
index 5a3711a..f505b78 100644
--- a/src/athena/SpriteFileReader.cpp
+++ b/src/athena/SpriteFileReader.cpp
@@ -16,7 +16,7 @@ Sakura::SpriteFile* SpriteFileReader::readFile() {
   atUint32 magic = readUint32();
 
   if (magic != Sakura::SpriteFile::Magic) {
-    atError("Not a valid Sakura Sprite container");
+    atError(fmt("Not a valid Sakura Sprite container"));
     return nullptr;
   }
 
@@ -24,7 +24,7 @@ Sakura::SpriteFile* SpriteFileReader::readFile() {
 
   // TODO: Make this more verbose
   if (version != Sakura::SpriteFile::Version) {
-    atError("Unsupported version");
+    atError(fmt("Unsupported version"));
     return nullptr;
   }
 
@@ -51,7 +51,7 @@ Sakura::SpriteFile* SpriteFileReader::readFile() {
   // which require data to be 32 byte aligned, or it causes some issues.
   // It's also convenient to have this, for later expansion.
   atUint32 reserved = readUint32();
-  UNUSED(reserved);
+  //UNUSED(reserved);
 
   // Next we have to load the textures
   // If we tried to add them one at a time to the sprite container
@@ -175,7 +175,7 @@ Sakura::SpriteFile* SpriteFileReader::readFile() {
 
 #endif
     else {
-      atError("Sprite names cannot be empty");
+      atError(fmt("Sprite names cannot be empty"));
       return nullptr;
     }
   }
diff --git a/src/athena/SpriteFileWriter.cpp b/src/athena/SpriteFileWriter.cpp
index 72b6bd5..345619e 100644
--- a/src/athena/SpriteFileWriter.cpp
+++ b/src/athena/SpriteFileWriter.cpp
@@ -11,7 +11,7 @@ SpriteFileWriter::SpriteFileWriter(std::string_view filepath) : MemoryCopyWriter
 
 void SpriteFileWriter::writeFile(Sakura::SpriteFile* file) {
   if (!file) {
-    atError("file cannot be NULL");
+    atError(fmt("file cannot be NULL"));
     return;
   }
 
diff --git a/src/athena/WiiFile.cpp b/src/athena/WiiFile.cpp
index db207d5..07875b8 100644
--- a/src/athena/WiiFile.cpp
+++ b/src/athena/WiiFile.cpp
@@ -78,7 +78,7 @@ bool WiiFile::isFile() const { return (m_type == WiiFile::File); }
 
 void WiiFile::addChild(WiiFile* file) {
   if (!isDirectory()) {
-    atWarning("{} is not a directory", filename());
+    atWarning(fmt("{} is not a directory"), filename());
     return;
   }
 
diff --git a/src/athena/WiiSaveReader.cpp b/src/athena/WiiSaveReader.cpp
index ff9df7c..7d24051 100644
--- a/src/athena/WiiSaveReader.cpp
+++ b/src/athena/WiiSaveReader.cpp
@@ -27,14 +27,14 @@ std::unique_ptr<WiiSave> WiiSaveReader::readSave() {
   WiiSave* ret = new WiiSave;
 
   if (length() < 0xF0C0) {
-    atError("Not a valid WiiSave");
+    atError(fmt("Not a valid WiiSave"));
     return nullptr;
   }
 
   WiiBanner* banner = this->readBanner();
 
   if (!banner) {
-    atError("Invalid banner");
+    atError(fmt("Invalid banner"));
     return nullptr;
   }
 
@@ -42,14 +42,14 @@ std::unique_ptr<WiiSave> WiiSaveReader::readSave() {
   atUint32 bkVer = readUint32();
 
   if (bkVer != 0x00000070) {
-    atError("Invalid BacKup header size");
+    atError(fmt("Invalid BacKup header size"));
     return nullptr;
   }
 
   atUint32 bkMagic = readUint32();
 
   if (bkMagic != 0x426B0001) {
-    atError("Invalid BacKup header magic");
+    atError(fmt("Invalid BacKup header magic"));
     return nullptr;
   }
 
@@ -130,7 +130,7 @@ WiiBanner* WiiSaveReader::readBanner() {
     std::cerr << std::endl;
     setData(oldData, oldLen);
     seek(oldPos, SeekOrigin::Begin);
-    atError("MD5 Mismatch");
+    atError(fmt("MD5 Mismatch"));
     return nullptr;
   }
 
@@ -158,7 +158,7 @@ WiiBanner* WiiSaveReader::readBanner() {
     // Make sure to reset m_reader values back to the old ones.
     setData(oldData, oldLen);
     seek(oldPos, SeekOrigin::Begin);
-    atError("Invalid Header Magic");
+    atError(fmt("Invalid Header Magic"));
     return nullptr;
   }
 
diff --git a/src/athena/WiiSaveWriter.cpp b/src/athena/WiiSaveWriter.cpp
index 92318b0..7e9db36 100644
--- a/src/athena/WiiSaveWriter.cpp
+++ b/src/athena/WiiSaveWriter.cpp
@@ -30,7 +30,7 @@ WiiSaveWriter::WiiSaveWriter(const std::string& filename) : MemoryCopyWriter(fil
 bool WiiSaveWriter::writeSave(WiiSave* save, atUint8* macAddress, atUint32 ngId, atUint8* ngPriv, atUint8* ngSig,
                               atUint32 ngKeyId, const std::string& filepath) {
   if (!save) {
-    atError("save cannot be NULL");
+    atError(fmt("save cannot be NULL"));
     return false;
   }
 
diff --git a/src/athena/ZQuestFileReader.cpp b/src/athena/ZQuestFileReader.cpp
index bda6125..b1c445f 100644
--- a/src/athena/ZQuestFileReader.cpp
+++ b/src/athena/ZQuestFileReader.cpp
@@ -23,14 +23,14 @@ ZQuestFile* ZQuestFileReader::read() {
   magic = readUint32();
 
   if ((magic & 0x00FFFFFF) != (ZQuestFile::Magic & 0x00FFFFFF)) {
-    atError("Not a valid ZQuest file");
+    atError(fmt("Not a valid ZQuest file"));
     return nullptr;
   }
 
   version = readUint32();
 
   if (version > ZQuestFile::Version) {
-    atError("Unsupported ZQuest version");
+    atError(fmt("Unsupported ZQuest version"));
     return nullptr;
   }
 
@@ -60,7 +60,7 @@ ZQuestFile* ZQuestFileReader::read() {
 
   if (version >= ZQUEST_VERSION_CHECK(2, 0, 0)) {
     if (checksum != athena::checksums::crc32(data.get(), compressedLen)) {
-      atError("Checksum mismatch, data corrupt");
+      atError(fmt("Checksum mismatch, data corrupt"));
       return nullptr;
     }
   } else {
@@ -75,7 +75,7 @@ ZQuestFile* ZQuestFileReader::read() {
 
     if (dstLen != uncompressedLen) {
       delete[] dst;
-      atError("Error decompressing data");
+      atError(fmt("Error decompressing data"));
       return nullptr;
     }
 
diff --git a/src/athena/ZQuestFileWriter.cpp b/src/athena/ZQuestFileWriter.cpp
index 7a9dacc..b5bad54 100644
--- a/src/athena/ZQuestFileWriter.cpp
+++ b/src/athena/ZQuestFileWriter.cpp
@@ -11,7 +11,7 @@ ZQuestFileWriter::ZQuestFileWriter(const std::string& filename) : MemoryCopyWrit
 
 void ZQuestFileWriter::write(ZQuestFile* quest, bool compress) {
   if (!quest) {
-    atError("quest cannot be NULL");
+    atError(fmt("quest cannot be NULL"));
     return;
   }