Hello, I am trying to build the latest xen code from the git branch and I am seeing errors in building the tools. gcc -pthread -o xl xl.o xl_cmdimpl.o xl_cmdtable.o xl_sxp.o libxlutil.so /home/aasthakm/workspace/ibc/source/xen/tools/libxl/../../tools/libxl/libxenlight.so -Wl,-rpath-link=/home/aasthakm/workspace/ibc/source/xen/tools/libxl/../../tools/libxc -Wl,-rpath-link=/home/aasthakm/workspace/ibc/source/xen/tools/libxl/../../tools/xenstore -Wl,-rpath-link=/home/aasthakm/workspace/ibc/source/xen/tools/libxl/../../tools/blktap2/control /home/aasthakm/workspace/ibc/source/xen/tools/libxl/../../tools/libxc/libxenctrl.so -lyajl xl_cmdimpl.o: In function `libxl_yajl_gen_alloc': /home/workspace/ibc/source/xen/tools/libxl/libxl_json.h:60: undefined reference to `yajl_gen_config' /home/workspace/ibc/source/xen/tools/libxl/libxl_json.h:60: undefined reference to `yajl_gen_config' /home/workspace/ibc/source/xen/tools/libxl/../../tools/libxl/libxenlight.so: undefined reference to `yajl_complete_parse' collect2: ld returned 1 exit status make[3]: *** [xl] Error 1 make[3]: Leaving directory `/home/workspace/ibc/source/xen/tools/libxl' make[2]: *** [subdir-install-libxl] Error 2 make[2]: Leaving directory `/home/workspace/ibc/source/xen/tools' make[1]: *** [subdirs-install] Error 2 make[1]: Leaving directory `/home/workspace/ibc/source/xen/tools' make: *** [install-tools] Error 2 I did install yajl: # locate yajl /usr/lib/x86_64-linux-gnu/libyajl.so.1 /usr/lib/x86_64-linux-gnu/libyajl.so.1.0.12 I also noticed a message earlier in the compile log: "Disabling libtool due to broken toolchain support" Could someone let me know how to fix this problem? Thanks in advance, Aastha