cannot compile in platform_io

[madschristiansen]

Hi,

i get this error when trying to compile it, both on aubuntu and windows machine:
.platformio/packages/toolchain-gccarmnoneeabi/arm-none-eabi/include/sys/unistd.h:209:10: error: conflicting declaration of C function 'unsigned int sleep(unsigned int)'

Have you or somebody else seen that before?

Br Mads