std::atomic fails with this compiler version

[vortex314]

I use the compiler version as indicated by the build of esp-open-rtos : 4.8.5
$ xtensa-lx106-elf-gcc --version
xtensa-lx106-elf-gcc (crosstool-NG crosstool-ng-1.22.0-60-g37b07f6f) 4.8.5
However the c++ std::atomic compiles, but doesn't link. See below.
Missing library for : __atomic_compare_exchange_4
Any suggestions ?

LD build/nanoEsp8266.out
./build/program.a(main.o):(.text.ZNSt13__atomic_baseIjE21compare_exchange_weakERjjSt12memory_orderS2[std::__atomic_base::compare_exchange_weak(unsigned int&, unsigned int, std::memory_order, std::memory_order)]+0x0): undefined reference to __atomic_compare_exchange_4' ./build/program.a(main.o): In function std::__atomic_base::compare_exchange_weak(unsigned int&, unsigned int, std::memory_order, std::memory_order)':
main.cpp:(.text.ZNSt13__atomic_baseIjE21compare_exchange_weakERjjSt12memory_orderS2[std::__atomic_base::compare_exchange_weak(unsigned int&, unsigned int, std::memory_order, std::memory_order)]+0x36): undefined reference to `__atomic_compare_exchange_4'
collect2: error: ld returned 1 exit status
../esp-open-rtos/common.mk:232: recipe for target 'build/nanoEsp8266.out' failed
make: *** [build/nanoEsp8266.out] Error 1