diff --git a/src/citron/main.cpp b/src/citron/main.cpp
index 17f9bd1c2..a8411ab43 100644
--- a/src/citron/main.cpp
+++ b/src/citron/main.cpp
@@ -164,7 +164,9 @@ static FileSys::VirtualFile VfsDirectoryCreateFileWrapper(const FileSys::Virtual
 #include "citron/play_time_manager.h"
 #include "citron/startup_checks.h"
 #include "citron/uisettings.h"
+#ifdef _WIN32
 #include "citron/updater/updater_dialog.h"
+#endif
 #include "citron/updater/updater_service.h"
 #include "citron/util/clickable_label.h"
 #include "citron/util/performance_overlay.h"
@@ -5562,6 +5564,7 @@ int main(int argc, char* argv[]) {
 }
 
 void GMainWindow::OnCheckForUpdates() {
+#ifdef _WIN32
     // Use HTTP URL to bypass SSL issues (will be redirected to HTTPS but handled by updater)
     // TODO: Fix SSL libraries and revert to https://releases.citron-emu.org/api/check
     std::string update_url = "http://releases.citron-emu.org/api/check";
@@ -5571,6 +5574,10 @@ void GMainWindow::OnCheckForUpdates() {
     updater_dialog->setAttribute(Qt::WA_DeleteOnClose);
     updater_dialog->show();
     updater_dialog->CheckForUpdates(update_url);
+#else
+    QMessageBox::information(this, tr("Updates"),
+                             tr("The update dialog is only available on Windows in this build."));
+#endif
 }
 
 void GMainWindow::CheckForUpdatesAutomatically() {
diff --git a/src/citron/updater/updater_dialog.cpp b/src/citron/updater/updater_dialog.cpp
index 59290522e..f8c3ecc5f 100644
--- a/src/citron/updater/updater_dialog.cpp
+++ b/src/citron/updater/updater_dialog.cpp
@@ -1,3 +1,4 @@
+#ifdef _WIN32
 // SPDX-FileCopyrightText: Copyright 2025 citron Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -350,4 +351,6 @@ QString UpdaterDialog::GetUpdateMessage(Updater::UpdaterService::UpdateResult re
     }
 }
 
-#include "updater_dialog.moc"
\ No newline at end of file
+#include "updater_dialog.moc"
+
+#endif // _WIN32
diff --git a/src/citron/updater/updater_dialog.h b/src/citron/updater/updater_dialog.h
index c22d269df..ec87be138 100644
--- a/src/citron/updater/updater_dialog.h
+++ b/src/citron/updater/updater_dialog.h
@@ -3,6 +3,8 @@
 
 #pragma once
 
+#ifdef _WIN32
+
 #include <memory>
 #include <QDialog>
 #include <QProgressBar>
@@ -83,4 +85,6 @@ private:
     qint64 total_download_size = 0;
     qint64 downloaded_bytes = 0;
     QTimer* progress_timer;
-};
\ No newline at end of file
+};
+
+#endif // _WIN32
\ No newline at end of file
diff --git a/src/citron/updater/updater_service.cpp b/src/citron/updater/updater_service.cpp
index e9c8ff59a..ef075e794 100644
--- a/src/citron/updater/updater_service.cpp
+++ b/src/citron/updater/updater_service.cpp
@@ -594,12 +594,19 @@ bool UpdaterService::ExtractArchive(const std::filesystem::path& archive_path, c
 
     return !cancel_requested.load();
 #else
+#ifdef _WIN32
     // Windows fallback: use system 7zip or PowerShell
     return ExtractArchiveWindows(archive_path, extract_path);
+#else
+    LOG_ERROR(Frontend, "Archive extraction requires libarchive on this platform.");
+    (void)archive_path;
+    (void)extract_path;
+    return false;
+#endif
 #endif
 }
 
-#ifndef CITRON_ENABLE_LIBARCHIVE
+#if defined(_WIN32) && !defined(CITRON_ENABLE_LIBARCHIVE)
 bool UpdaterService::ExtractArchiveWindows(const std::filesystem::path& archive_path, const std::filesystem::path& extract_path) {
     // Create extraction directory
     EnsureDirectoryExists(extract_path);
@@ -921,5 +928,6 @@ bool UpdaterService::ApplyStagedUpdate(const std::filesystem::path& app_director
 }
 
 } // namespace Updater
-
-#include "updater_service.moc"
\ No newline at end of file
+#ifdef _WIN32
+#include "updater_service.moc"
+#endif
\ No newline at end of file
diff --git a/src/citron/updater/updater_service.h b/src/citron/updater/updater_service.h
index b1a405269..07c0cdda9 100644
--- a/src/citron/updater/updater_service.h
+++ b/src/citron/updater/updater_service.h
@@ -86,7 +86,7 @@ private:
 
     // File operations
     bool ExtractArchive(const std::filesystem::path& archive_path, const std::filesystem::path& extract_path);
-#ifndef CITRON_ENABLE_LIBARCHIVE
+#if defined(_WIN32) && !defined(CITRON_ENABLE_LIBARCHIVE)
     bool ExtractArchiveWindows(const std::filesystem::path& archive_path, const std::filesystem::path& extract_path);
 #endif
     bool InstallUpdate(const std::filesystem::path& update_path);
diff --git a/src/video_core/vulkan_common/vulkan.h b/src/video_core/vulkan_common/vulkan.h
index 62aa13291..667cb80ed 100644
--- a/src/video_core/vulkan_common/vulkan.h
+++ b/src/video_core/vulkan_common/vulkan.h
@@ -24,3 +24,8 @@
 #undef False
 #undef None
 #undef True
+#undef Success
+#undef KeyPress
+#undef KeyRelease
+#undef FocusIn
+#undef FocusOut