Not sure if this is the right list for this question, but I have not found a better one on the PHP site to reference. I am unable to build PHP 5.3.3 on Windows using Visual Studio 2010. I have been able to build previous versions, but the new buildconf.bat file works, but when I run the configure.bat file, I get an error that the cl.exe is not found. This happens on 64bit and 32bit machines. The CL.exe is in I have followed the build steps from: http://wiki.php.net/internals/windows/stepbystepbuild I created a folder C:\PHP5 I unpacked the binary-tools into this directory and ran the phpsdk_setvars.bat I then ran the phpsdk_buildtree.bat C:\PHP5\source I then unpacked PHP 5.3.3 source into the C:\PHP5\source buildconf runs without error. configure returns: Saving configure options to config.nice.bat Checking for cl.exe ... <not found> ERROR: MS C++ compiler is required C:\>dir \cl.exe /s/b C:\Program Files\Microsoft Visual Studio 10.0\VC\bin\cl.exe C:\Program Files\Microsoft Visual Studio 10.0\VC\bin\amd64\cl.exe C:\Program Files\Microsoft Visual Studio 10.0\VC\bin\x86_amd64\cl.exe Any help would be appreciated -- PHP Windows Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php