Mine

gcc -O2 -fomit-frame-pointer -m32 -march=i686 -DNDEBUG -std=gnu99 -Wall -Wstrict-prototypes -Wno-unused-value -Wdeclaration-after-statement  -D__XEN_TOOLS__ -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -mno-tls-direct-seg-refs -Werror -Wp,-MD,.xenstored.d  -I../../tools/libxc -I.     -L../../tools/libxc xenstored_core.o xenstored_watch.o xenstored_domain.o xenstored_transaction.o xs_lib.o talloc.o utils.o tdb.o hashtable.o xenstored_linux.o   -lxenctrl  -o xenstored
../../tools/libxc/libxenctrl.so: undefined reference to `___tls_get_addr'
collect2: ld returned 1 exit status
make[2]: *** [xenstored] Error 1
make[2]: Leaving directory `/usr/src/xen-3.0.4_1-src/tools/xenstore'
make[1]: *** [install] Error 2
make[1]: Leaving directory `/usr/src/xen-3.0.4_1-src/tools'
make: *** [install-tools] Error 2