Josef,
There should be checks for the define _WIN32_WCE in the following headers and source files:
<wolfssl-root>/wolfssl/internal.h
<wolfssl-root>/wolfssl/wolfcrypt/wc_port.h
<wolfssl-root>/wolfcrypt/src/wc_port.c
<wolfssl-root>/src/wolfio.c
If you are not seeing those defines could you tell me which version of the wolfssl library you are working with by checking <wolfssl-root>/wolfssl/version.h?
For example in <wolfssl-root>/wolfcrypt/src/wc_port.c:
1227 #ifndef NO_ASN_TIME                                                              
1228 #if defined(_WIN32_WCE)                                                          
1229 time_t windows_time(time_t* timer)                                               
1230 {                                                                                
1231     SYSTEMTIME     sysTime;                                                      
1232     FILETIME       fTime;                                                        
1233     ULARGE_INTEGER intTime;                                                      
1234     time_t         localTime;                                                    
1235                                                                                  
1236     if (timer == NULL)                                                           
1237         timer = &localTime;                                                      
1238                                                                                  
1239     GetSystemTime(&sysTime);                                                     
1240     SystemTimeToFileTime(&sysTime, &fTime);                                      
1241                                                                                  
1242     XMEMCPY(&intTime, &fTime, sizeof(FILETIME));                                 
1243     /* subtract EPOCH */                                                         
1244     intTime.QuadPart -= 0x19db1ded53e8000;                                       
1245     /* to secs */                                                                
1246     intTime.QuadPart /= 10000000;                                                
1247     *timer = (time_t)intTime.QuadPart;                                           
1248                                                                                  
1249     return *timer;                                                               
1250 }                                                                                
1251 #endif /*  _WIN32_WCE */ 
....
Warm Regards,
Kaleb