broken build when -fsanitize=thread = yes

[Remi Collet]

Build on Fedora 19, with latest gcc fails.

...
checking whether C compiler accepts -fsanitize=thread... yes
...
Configuration summary for libmemcached version 1.0.17
   * Installation prefix: /usr
   * System type: redhat-linux-gnu
   * Host CPU: x86_64
   * C Compiler: gcc (GCC) 4.8.0 20130320 (Red Hat 4.8.0-0.18)
   * C Flags: -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -Wno-unknown-pragmas -Wno-pragmas -Wextra -std=c99 -Wunsuffixed-float-constants -Wjump-misses-init -Wno-attributes -Waddress -Wvarargs -Warray-bounds -Wbad-function-cast -Wchar-subscripts -Wcomment -Wfloat-equal -Wformat-security -Wformat=2 -Wformat-y2k -Wlogical-op -Wmaybe-uninitialized -Wmissing-field-initializers -Wmissing-noreturn -Wmissing-prototypes -Wnested-externs -Wnormalized=id -Woverride-init -Wpointer-arith -Wpointer-sign -Wredundant-decls -Wshadow -Wsign-compare -Wstrict-overflow=1 -Wswitch-enum -Wtrampolines -Wundef -Wunsafe-loop-optimizations -funsafe-loop-optimizations -fsanitize=address -fsanitize=thread -Wclobbered -Wunused -Wunused-result -Wunused-variable -Wunused-parameter -Wunused-local-typedefs -Wwrite-strings -floop-parallelize-all -fwrapv
   * C++ Compiler: g++ (GCC) 4.8.0 20130320 (Red Hat 4.8.0-0.18)
   * C++ Flags: -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -Wno-unknown-pragmas -Wno-pragmas -Wextra -Wno-attributes -Wvarargs -Waddress -Warray-bounds -Wchar-subscripts -Wcomment -Wctor-dtor-privacy -Wfloat-equal -Wformat=2 -Wformat-y2k -Wmaybe-uninitialized -Wmissing-field-initializers -Wlogical-op -Wnon-virtual-dtor -Wnormalized=id -Woverloaded-virtual -Wpointer-arith -Wredundant-decls -Wshadow -Wsign-compare -Wstrict-overflow=1 -Wswitch-enum -Wtrampolines -Wundef -Wunsafe-loop-optimizations -funsafe-loop-optimizations -Wc++11-compat -fsanitize=address -fsanitize=thread -Wclobbered -Wunused -Wunused-result -Wunused-variable -Wunused-parameter -Wunused-local-typedefs -Wwrite-strings -Wformat-security -floop-parallelize-all -fwrapv
   * CPP Flags: -fvisibility=hidden
   * LIB Flags:
   * Assertions enabled: no
   * Debug enabled: no
   * Shared: yes
   * Warnings as failure: no
   * SASL support: yes
   * make -j: 4
   * VCS checkout: no
...
  CC libmemcached-1.0/t/c_sasl_test.o
g++: error: -fsanitize=thread linking must be done with -pie or -shared
make[1]: *** [libtest/core-count] Error 1
make[1]: *** Waiting for unfinished jobs....
g++: error: -fsanitize=thread linking must be done with -pie or -shared
make[1]: *** [libtest/backtrace] Error 1
make[1]: Leaving directory `/builddir/build/BUILD/libmemcached-1.0.17'
make: *** [all] Error 2