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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Our project is using ExternalProject_Add to build Ruby. Our BUILD_COMMAND on Windows is “cd ${CMAKE_BINARY_DIR}/Ruby-prefix/src/Ruby-build && nmake”. This works using the professional versions of Visual Studio. However, using Visual Studio Express 2010 I get an error that nmake is not a known program. Nmake is not in my system path but is found when running the Visual Studio command prompt. How can I get the ExternalProject build command to use the correct environment? Should I put a call to vcvarsall.bat in the command line? Is there a CMake variable that has the path to that?<br><br>Thanks a lot,<br>Dan<o:p></o:p></p></div></body></html>