This must be a basic question. I'm sure I remember asking similar a while ago but although I've archived this list back to 2009, can't find it. Starting with an empty build directory, apart from a symlink to downloads directory shared by all builds: $ ../source/configure --build-cross-tools x86 ../buildtools --use-gcc-pipe -j2 && PATH=$PATH:../buildtools/jam/bin.linuxx86 jam -q @nightly-pimple-Jupiter the output of the build is: Starting build of type regular ... Building Haiku Nightly qrencode support not available on x86 ...patience... ...patience... ...patience... ...patience... ...patience... ...patience... ...patience... ...patience... ...patience... ...patience... ...found 97381 target(s)... ...updating 14132 target(s)... InitScript1 /mnt/mounty/haiku/MSI-laptop/haiku.image-init-vars AddTargetVariableToScript1 <unique!target>_target_871 AddTargetVariableToScript1 <unique!target>_target_971 AddTargetVariableToScript1 <unique!target>_target_081 AddTargetVariableToScript1 <unique!target>_target_181 AddTargetVariableToScript1 <unique!target>_target_281 Link /mnt/mounty/haiku/MSI-laptop/objects/linux/x86/release/tools/package/package /mnt/mounty/haiku/MSI-laptop/objects/linux/lib/libpackage_build.so: undefined reference to `dlopen' /mnt/mounty/haiku/MSI-laptop/objects/linux/lib/libpackage_build.so: undefined reference to `dlclose' /mnt/mounty/haiku/MSI-laptop/objects/linux/lib/libpackage_build.so: undefined reference to `dlsym' collect2: error: ld returned 1 exit status export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/mnt/mounty/haiku/MSI-laptop/objects/linux/lib ; /mnt/mounty/haiku/source/build/scripts/rm_attrs /mnt/mounty/haiku/MSI-laptop/objects/linux/x86/release/tools/rm_attrs -f "/mnt/mounty/haiku/MSI-laptop/objects/linux/x86/release/tools/package/package" cc -Xlinker --no-as-needed -lm -o "/mnt/mounty/haiku/MSI-laptop/objects/linux/x86/release/tools/package/package" "/mnt/mounty/haiku/MSI-laptop/objects/linux/x86/release/tools/package/command_add.o" "/mnt/mounty/haiku/MSI-laptop/objects/linux/x86/release/tools/package/command_checksum.o" "/mnt/mounty/haiku/MSI-laptop/objects/linux/x86/release/tools/package/command_create.o" "/mnt/mounty/haiku/MSI-laptop/objects/linux/x86/release/tools/package/command_dump.o" "/mnt/mounty/haiku/MSI-laptop/objects/linux/x86/release/tools/package/command_extract.o" "/mnt/mounty/haiku/MSI-laptop/objects/linux/x86/release/tools/package/command_info.o" "/mnt/mounty/haiku/MSI-laptop/objects/linux/x86/release/tools/package/command_list.o" "/mnt/mounty/haiku/MSI-laptop/objects/linux/x86/release/tools/package/command_recompress.o" "/mnt/mounty/haiku/MSI-laptop/objects/linux/x86/release/tools/package/package.o" "/mnt/mounty/haiku/MSI-laptop/objects/linux/x86/release/tools/package/PackageWriterListener. o" "/mnt/mounty/haiku/MSI-laptop/objects/linux/x86/release/tools/package/PackageWritingUtils.o" \ "/mnt/mounty/haiku/MSI-laptop/objects/linux/x86/release/build/libroot/libroot_build_function_remapper.a" "/mnt/mounty/haiku/MSI-laptop/objects/linux/lib/libroot_build.so" "/mnt/mounty/haiku/MSI-laptop/objects/linux/lib/libpackage_build.so" "/mnt/mounty/haiku/MSI-laptop/objects/linux/lib/libbe_build.so" -lsupc++ \ ...failed Link /mnt/mounty/haiku/MSI-laptop/objects/linux/x86/release/tools/package/package ... BUILD FAILURE: ...failed updating 1 target(s)... ...skipped 7 target(s)... ...updated 6 target(s)... Sorry to quote so much but I thought it was better to give the full context. As I'm able to build on two other machines, I wonder why this build is different. Michael.