Windows build failure

There's a current build failure on windows with: master @ 710d578901a08b091748d4fd4471e3327a4d099e The issue is in: src/convenience/wavewrite.c, there's an unresolved external for the gettimeofday function. If you #ifdef the function in (like done elsewhere), it builds successfully. Reason i'm building this out right now is that I discovered a weird issue yesterday, while using rtl_fm + multimon-ng to demod/decode APRS... Specifically, I noticed that when I did not use the -M fm option, it works, however when I attempted to explicitly specify -M fm, it did not work. I was going to debug-in to determine why this would be and found the above build issue along the way. If there is a better list to post development issues to, please advise and i'll join that one instead. 73's Joseph Armbruster KJ4JIO