http://bugs.winehq.org/show_bug.cgi?id=19783
--- Comment #7 from Dan Kegel dank@kegel.com 2009-08-29 21:31:04 --- Oddly, a second mkdepend.exe is built in js/src/config/mkdepend. It seems to get built ok, but mt.exe is lurking in the background and has the file open, so the build breaks later when that mkdepend.exe can't be read (since mt.exe still has it open):
make[5]: Entering directory `/c/cygwin/firefox-191src/ff-dbg/js/src/config/mkdepend' /c/mozilla-build/moztools/bin/nsinstall -m 755 mkdepend.exe ../../../../dist/host/bin nsinstall: cannot copy mkdepend.exe to ........\dist\host\bin\mkdepend.exe: Sharing violation