Freshly released Wine 2.0 fails to compile ; it never happened to me during last several years of compiling it under current Slackware.
macro.lex.yy.o: In function `.L195':
macro.lex.yy.c
.text+0x10e4): undefined reference to `yywrap'
collect2: error: ld returned 1 exit status
winegcc: gcc failed
make[1]: *** [Makefile:288: winhlp32.exe.so] Error 2
make[1]: Leaving directory '/tmp/SBo/wine-2.0/programs/winhlp32'
make: *** [Makefile:21679: programs/winhlp32] Error 2