I tried to configure to build tools from NetBSD-current amd64 host but was blocked by Unsupported build platform: netbsd but got around that by making a script nbconfigure, starting with configure script but adding case "${platform}" in Darwin) HOST_PLATFORM=darwin ;; FreeBSD) HOST_PLATFORM=freebsd SFDISK_BINARY=sfdisk-linux if [ "$HAIKU_HOST_USE_32BIT" = 1 ] ; then echo Unsupported platform: FreeBSD ${platformMachine} exit 1 fi ;; Haiku) HOST_PLATFORM=haiku_host ;; Linux) HOST_PLATFORM=linux ;; OpenBSD) HOST_PLATFORM=openbsd ;; NetBSD) HOST_PLATFORM=netbsd ;; SunOS) HOST_PLATFORM=sunos ;; CYGWIN_NT-*) HOST_PLATFORM=cygwin ;; *) echo Unsupported platform: ${platform} exit 1 ;; esac and case $HOST_PLATFORM in freebsd|openbsd|netbsd) MAKE=gmake;; *) MAKE=make;; esac Lines with "netbsd" were my modifications. After the first modification, building the cross-tools failed apparently because of incompatibility with BSD make, just as building jam failed with "make" but succeeded with "gmake". Then I successfully built the cross-tools using gcc-aux, which includes Ada as well as C and C++, for both x86_gcc2 and X86 hybrid, and x86_64. But when I go to haiku/haiku.nbgenerated directory and try to build the anyboot-image with jam -q @anyboot-image I get Unsupported host platform: netbsd I grep'ed recursively on "supported" and "SUPPORTED", found SUPPORTED_PLATFORMS, but how do I add netbsd to that list, or disable the filter that blocks me? After modifying "configure" and successfully building the cross-tools, I ought to have a fair chance to see if I can build the anyboot-image (also boot floppy image if possible). I put UserBuildConfig in nbgenerated directory: HAIKU_BUILD_FEATURE_SSL = 1 ; SUPPORTED_PLATFORMS= haiku netbsd ; I would of course not use this latter line if building from FreeBSD or Linux. Is this the wrong way? Should UserBuildConfig be in another directory? Documentation is not very clear. I looked through the Jamrules, UserBuildConfig (ReadMe and sample); modifying the Jamrules and included files directory would be too error-prone, so there ought to be a different way to make the system see netbsd as a supported patform. Earlier, with FreeBSD, using gcc-4.7.3 from FreeBSD ports, I fell short on building the cross-tools, succeeding with x86gcc2 but not x86 (gcc4); generated.nodl/build directory was empty so I could not use this to build x86_gcc2 anyboot image. But I feel like I ought to get the chance with cross-tools successfully built from NetBSD. Tom