Add Linux stubs.

UnleashedRecomp/CMakeLists.txt

@@ -91,6 +91,13 @@ if (WIN32)
         "os/win32/process_win32.cpp"
         "os/win32/version_win32.cpp"
     )
+elseif (CMAKE_SYSTEM_NAME MATCHES "Linux")
+    list(APPEND SWA_OS_CXX_SOURCES
+        "os/linux/logger_linux.cpp"
+        "os/linux/media_linux.cpp"
+        "os/linux/process_linux.cpp"
+        "os/linux/version_linux.cpp"
+    )
 endif()
 
 set(SWA_CPU_CXX_SOURCES

UnleashedRecomp/os/linux/logger_linux.cpp

@@ -0,0 +1,11 @@
+#include <os/logger_detail.h>
+
+void os::logger::detail::Init()
+{
+    assert(false && "Unimplemented.");
+}
+
+void os::logger::detail::Log(const std::string_view str, detail::ELogType type, const char* func)
+{
+    assert(false && "Unimplemented.");
+}

UnleashedRecomp/os/linux/media_linux.cpp

@@ -0,0 +1,7 @@
+#include <os/media_detail.h>
+
+bool os::media::detail::IsExternalMediaPlaying()
+{
+    // This functionality is not supported in Linux.
+    return false;
+}

UnleashedRecomp/os/linux/process_linux.cpp

@@ -0,0 +1,20 @@
+#include <os/process_detail.h>
+
+std::filesystem::path os::process::detail::GetExecutablePath()
+{
+    assert(false && "Unimplemented.");
+    return std::filesystem::path();
+}
+
+std::filesystem::path os::process::detail::GetWorkingDirectory()
+{
+    // TODO: There's a cross platform way to retrieve this which is just getting it from argv[0].
+    assert(false && "Unimplemented.");
+    return std::filesystem::path();
+}
+
+bool os::process::detail::StartProcess(const std::filesystem::path path, const std::vector<std::string> args, std::filesystem::path work)
+{
+    assert(false && "Unimplemented.");
+    return false;
+}

UnleashedRecomp/os/linux/version_linux.cpp

@@ -0,0 +1,7 @@
+#include <os/version_detail.h>
+
+os::version::detail::OSVersion os::version::detail::GetOSVersion()
+{
+    assert(false && "Unimplemented.");
+    return os::version::detail::OSVersion();
+}