Errors

1>------ Build started: Project: Neospector, Configuration: Debug Win32 ------
1>main.obj : error LNK2005: _tag already defined in packer.obj
1>SDLmain.lib(SDL_win32_main.obj) : error LNK2005: _main already defined in packer.obj
1>swch.obj : error LNK2019: unresolved external symbol _parts_avg referenced in function _update_SWCH
1>acid.obj : error LNK2001: unresolved external symbol _parts_avg
1>btry.obj : error LNK2001: unresolved external symbol _parts_avg
1>elec.obj : error LNK2001: unresolved external symbol _parts_avg
1>sprk.obj : error LNK2001: unresolved external symbol _parts_avg
1>uran.obj : error LNK2019: unresolved external symbol _restrict_flt referenced in function _update_URAN
1>graphics.obj : error LNK2001: unresolved external symbol _restrict_flt
1>interface.obj : error LNK2001: unresolved external symbol _restrict_flt
1>powder.obj : error LNK2001: unresolved external symbol _restrict_flt
1>frzw.obj : error LNK2001: unresolved external symbol _restrict_flt
1>ice.obj : error LNK2001: unresolved external symbol _restrict_flt
1>pyro.obj : error LNK2001: unresolved external symbol _restrict_flt
1>sing.obj : error LNK2001: unresolved external symbol _restrict_flt
1>neut.obj : error LNK2019: unresolved external symbol _create_n_parts referenced in function _update_NEUT
1>prti.obj : error LNK2019: unresolved external symbol _orbitalparts_set referenced in function _update_PRTI
1>prto.obj : error LNK2001: unresolved external symbol _orbitalparts_set
1>prti.obj : error LNK2019: unresolved external symbol _orbitalparts_get referenced in function _update_PRTI
1>prto.obj : error LNK2001: unresolved external symbol _orbitalparts_get
1>graphics.obj : error LNK2001: unresolved external symbol _orbitalparts_get
1>graphics.obj : error LNK2019: unresolved external symbol _clamp_flt referenced in function _draw_air
1>interface.obj : error LNK2001: unresolved external symbol _clamp_flt
1>graphics.obj : error LNK2019: unresolved external symbol _isign referenced in function _draw_line
1>main.obj : error LNK2019: unresolved external symbol __imp__pthread_exit referenced in function _update_grav_async
1>main.obj : error LNK2019: unresolved external symbol __imp__pthread_cond_wait referenced in function _update_grav_async
1>main.obj : error LNK2019: unresolved external symbol __imp__pthread_mutex_unlock referenced in function _update_grav_async
1>main.obj : error LNK2019: unresolved external symbol __imp__pthread_mutex_lock referenced in function _update_grav_async
1>main.obj : error LNK2019: unresolved external symbol __imp__pthread_create referenced in function _start_grav_async
1>main.obj : error LNK2019: unresolved external symbol __imp__pthread_cond_init referenced in function _start_grav_async
1>main.obj : error LNK2019: unresolved external symbol __imp__pthread_mutex_init referenced in function _start_grav_async
1>main.obj : error LNK2019: unresolved external symbol __imp__pthread_mutex_destroy referenced in function _stop_grav_async
1>main.obj : error LNK2019: unresolved external symbol __imp__pthread_join referenced in function _stop_grav_async
1>main.obj : error LNK2019: unresolved external symbol __imp__pthread_cond_signal referenced in function _stop_grav_async
1>misc.obj : error LNK2019: unresolved external symbol __imp__regfree referenced in function _sregexp
1>misc.obj : error LNK2019: unresolved external symbol __imp__regexec referenced in function _sregexp
1>misc.obj : error LNK2019: unresolved external symbol __imp__regcomp referenced in function _sregexp
1>misc.obj : error LNK2019: unresolved external symbol _fmax referenced in function _RGB_to_HSV
1>misc.obj : error LNK2019: unresolved external symbol _fmin referenced in function _RGB_to_HSV