MichaelKim wrote: > Cygwin make always processing `$(chrome_jar_file)` target, after first > successful build. So I never get up to date message and always see commands > for `$(chrome_jar_file)` are executing. > > However it happens only on Windows 7. On Windows XP once it built and > intact, no more builds. > I narrowed down the issue to one prerequisite - `$(jar_target_dir)`. > > Here is part of the code > > # The location where the JAR file will be created. > jar_target_dir := $(build_dir)/chrome > > # The main chrome JAR file. > chrome_jar_file := $(jar_target_dir)/$(extension_name).jar > > # The root of the JAR sources. > jar_source_root := chrome > > # The sources for the JAR file. > jar_sources := bla #... some files, doesn't matter > > jar_sources_no_dir := $(subst $(jar_source_root)/,,$(jar_sources)) > > $(chrome_jar_file): $(jar_sources) $(jar_target_dir) > @echo "Creating chrome JAR file." > @cd $(jar_source_root); $(ZIP) ../$(chrome_jar_file) > $(jar_sources_no_dir) > @echo "Creating chrome JAR file. Done!" > > $(jar_target_dir): $(build_dir) > echo "Creating jar target dir..." > if [ ! -x $(jar_target_dir) ]; \ > then \ > mkdir $(jar_target_dir); \ > fi > > $(build_dir): > @if [ ! -x $(build_dir) ]; \ > then \ > mkdir $(build_dir); \ > fi > > > so if I just remove `$(jar_target_dir)` from `$(chrome_jar_file)` rule, it > works fine. > Also tried to use `-e` in `if`. > So again, question is why in windows 7 target is never up to date and it has > always to process it.
Have you tried adding a short sleep after creating $(jar_target_dir)? Maybe try something in the range of 2 to 5 seconds. BTW, are you building on a FAT filesystem or NTFS? My guess here is that the timestamps on $(jar_target_dir) and $(chrome_jar_file) are the same, at least as far as make is concerned. The FAT filesystem, with its 2 second resolution, is somewhat prone to this kind of problem. -Jeremy -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
