undefined reference to sys_microsleep()

[giuliomoro]

@peter2708 https://github.com/libpd/libpd/issues/136#issuecomment-361581784

Has there been a change with the most recent bela os....

I'm getting linking errors such as: /root/Bela/projects/bela_workshop/libpd-render-with-IMU.cpp:(.text+0x784): undefined reference to `sys_microsleep(int)'

We have tried with and without the libpd prefix before sys_microsleep.

Have a look at the most recent BelaPlatform/Bela core/default_libpd_render.cpp: the i/o loop is already in there, so you should not need to handle it separately in your render file.

#ifdef PD_THREADED_IO
void fdLoop(void* arg){
    t_pdinstance* pd_that = (t_pdinstance*)arg;
    while(!gShouldStop){
        sys_doio(pd_that);
        usleep(3000);
    }
}
#endif /* PD_THREADED_IO */

You may also be able to rescue your current render.cpp by declaring sys_microsleep() with C linkage:

extern "C"
{
void sys_microsleep(int);'
};

[giuliomoro]

incidentally, if that libpd-render-with-IMU.cpp was taken from this, then this has already been updated!