Hi, I have built IOHIDFamily-172.8 using darwinbuild in the past, but the latest version, 185.22 won't build. I'm using the version of darwinbuild off svn. Here's some output from # darwinbuild IOHIDFamily . I had an earlier version of xcode (2.2) when I built darwinbuild itself and downloaded the darwin build environment which is shown in the output here, but have since upgraded it to 2.5 (xcodebuild -version returns Component versions: DevToolsCore-798.0; DevToolsSupport-794.0) to try and solve this problem. Not sure if that's important. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++ BUILDING IOHIDFamily-185.22~7 on Thu Jan 24 16:18:27 PST 2008 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++ Build configuration: Build host: Phobos.local Build tool: xcodebuild Build action: install Build number: 8R218 Host kernel version: Darwin Kernel Version 8.10.0: Wed May 23 16:50:59 PDT 2007; root:xnu-792.21.3~1/RELEASE_PPC cc version: gcc version 3.3 20030304 (Apple Computer, Inc. build 1809) cctools version: version cctools-590.obj, GNU assembler version 1.38 xcode version: Component versions: DevToolsCore-747.0; DevToolsSupport-733.0 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++ [...much output...] CompileCplusplus /private/var/tmp/IOHIDFamily/IOHIDFamily-185.22.obj/ IOHIDFamily.build/IOHIDFamily.build/Objects-normal/i386/ IOHIDLibUserClient.o IOHIDFamily/IOHIDLibUserClient.cpp /usr/bin/g++-3.3 -c -Wp,-header-mapfile,/private/var/tmp/ IOHIDFamily/IOHIDFamily-185.22.obj/IOHIDFamily.build/ IOHIDFamily.build/IOHIDFamily.hmap -F/private/var/tmp/IOHIDFamily/ IOHIDFamily-185.22.sym/BuiltProducts -I/private/var/tmp/IOHIDFamily/ IOHIDFamily-185.22.sym/BuiltProducts/include -I/private/var/tmp/ IOHIDFamily/IOHIDFamily-185.22.root//System/Library/Extensions/ include -I/private/var/tmp/IOHIDFamily/IOHIDFamily-185.22.sym/ BuiltProducts/include -IIOHIDFamily -arch i386 -fno-common -nostdinc -Os -Wmost -Wno-four-char-constants -Wno-unknown-pragmas -I/System/ Library/Frameworks/Kernel.framework/PrivateHeaders -I/System/Library/ Frameworks/Kernel.framework/Headers -fno-builtin -finline -fno-keep- inline-functions -force_cpusubtype_ALL -fno-rtti -fno-exceptions - fcheck-new -msoft-float -fapple-kext -static -DKERNEL - DKERNEL_PRIVATE -DDRIVER_PRIVATE -DAPPLE -DNeXT -pipe "-fmessage- length=0" -g -I/private/var/tmp/IOHIDFamily/IOHIDFamily-185.22.obj/ IOHIDFamily.build/IOHIDFamily.build/DerivedSources -I/private/var/tmp/ IOHIDFamily/IOHIDFamily-185.22.obj/IOHIDFamily.build/ IOHIDFamily.build/DerivedSources IOHIDFamily/ IOHIDLibUserClient.cpp -o /private/var/tmp/IOHIDFamily/ IOHIDFamily-185.22.obj/IOHIDFamily.build/IOHIDFamily.build/Objects- normal/i386/IOHIDLibUserClient.o IOHIDFamily/IOHIDLibUserClient.cpp: In member function `void IOHIDLibUserClient::resourceNotificationGated()': IOHIDFamily/IOHIDLibUserClient.cpp:404: error: `IOUCProcessToken' undeclared (first use this function) IOHIDFamily/IOHIDLibUserClient.cpp:404: error: (Each undeclared identifier is reported only once for each function it appears in.) IOHIDFamily/IOHIDLibUserClient.cpp:404: error: parse error before `;' token IOHIDFamily/IOHIDLibUserClient.cpp:405: error: `token' undeclared (first use this function) IOHIDFamily/IOHIDLibUserClient.cpp:407: error: `kIOClientPrivilegeSecureConsoleProcess' undeclared (first use this function) IOHIDFamily/IOHIDLibUserClient.cpp:409: error: `kIOClientPrivilegeConsoleUser' undeclared (first use this function) ** BUILD FAILED ** ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++ BUILD TIME: 0h 0m 26s EXIT STATUS: 1 Now I have found these missing declarations in this header file: http://fxr.watson.org/fxr/source/iokit/IOKit/IOKitKeysPrivate.h? v=xnu-1228#L60 but I'm unsure where the hell to put it to get darwinbuild to use it. Anyway it seems darwinbuild is not downloading the right version of that header. TIA, John