How to Build Microsoft Detours Express (32-bit) on 64-bit Windows

Microsoft Detours Express, which is 32-bit only, can still be built on 64-bit operating systems. Here’s how:

1. Open a 32-bit Command Prompt (C:\Windows\SysWow64\cmd.exe).
2. Run VCVARS32.BAT
   • VS2010: "C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\bin\vcvars32.bat"
   • VS2008: "C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\bin\vcvars32.bat"
3. Set the target processor to x86 (set DETOURS_TARGET_PROCESSOR=X86).
4. Build Detours using nmake.