Hi, I do not know if it is the right mail list to get help on this topic but if not please direct to the appropriate list if anyone knows of. I downloaded WebKit-r37605 from WebKit Nightly Builds link and have also installed all required tools, cygwin, WebKitSupportLibrary etc. I have been trying to build it on Windows XP machine for last couple of days but to no avail. It is failing at qmake. Build script seems to provide -r option to it but qmake does not like it. Please see logs below. Any help will be greatly appreciated. Here is my qmake version. $ qmake -v Qmake version: 1.07a (Qt 3.3.4) Qmake is free software from Trolltech AS. Thanks Chetan cdhillon@CDHILLON2 ~/My Documents/work/WebRunTime/WebKit-r37605 $ ./WebKitTools/Scripts/build-webkit Subroutine main::tmpnam redefined at /cygdrive/c/Documents and Settings/cdhillon /My Documents/work/WebRunTime/WebKit-r37605/WebKitTools/Scripts/webkitdirs.pm line 33 Subroutine main::tmpfile redefined at /cygdrive/c/Documents and Settings/cdhillon/My Documents/work/WebRunTime/WebKit-r37605/WebKitTools/Scripts/webkitdirs.pm line 33 Checking mod-date of WebKitSupportLibrary.zip... Current WebKitSupportLibrary is up to date Calling 'qmake CONFIG+=qt-port -r OUTPUT_DIR=/cygdrive/c/Documents and Settings/cdhillon/My Documents/work/WebRunTime/WebKit-r37605/WebKitBuild/Release /cygdriv e/c/Documents and Settings/cdhillon/My Documents/work/WebRunTime/WebKit-r37605/WebKit.pro CONFIG+=release CONFIG-=debug' in /cygdrive/c/Documents and Settings/cdhillon/My Documents/work/WebRunTime/WebKit-r37605/WebKitBuild/Release ***Unknown option -r Usage: qmake [mode] [options] [files] QMake has two modes, one mode for generating project files based on some heuristics, and the other for generating makefiles. Normally you shouldn't need to specify a mode, as makefile generation is the default mode for qmake, but you may use this to test qmake on an existing project Mode: -project Put qmake into project file generation mode In this mode qmake interprets files as files to be built, defaults to *.c; *.ui; *.y; *.l; *.ts; *.h; *.hpp; *.hh; *.H; *.hxx; *.cpp; *.cc; *.cxx; *.C -makefile Put qmake into makefile generation mode (default) In this mode qmake interprets files as project files to be processed, if skipped qmake will try to find a project file in your current working directory Warnings Options: -Wnone Turn off all warnings -Wall Turn on all warnings -Wparser Turn on parser warnings -Wlogic Turn on logic warnings Options: * You can place any variable assignment in options and it will be * * processed as if it was in [files]. These assignments will be parsed * * before [files]. * -o file Write output to file -unix Run in unix mode -win32 Run in win32 mode -macx Run in Mac OS X mode -d Increase debug level -t templ Overrides TEMPLATE as templ -tp prefix Overrides TEMPLATE so that prefix is prefixed into the va lue -help This help -v Version information -after All variable assignments after this will be parsed after [files] -cache file Use file as cache [makefile mode only] -spec spec Use spec as QMAKESPEC [makefile mode only] -nocache Don't use a cache file [makefile mode only] -nodepend Don't generate dependencies [makefile mode only] -nomoc Don't generate moc targets [makefile mode only] -nopwd Don't look for files in pwd [ project mode only] -norecursive Don't do a recursive search [ project mode only] Failed to setup build environment using qmake!