Hello automakers. The recent commit `v1.11-512-g40c3432', required to fix automake bugs #8485 and #8526, has re-introduced the bug reported by Ignacy Gawedzki in his message "subdir-objects, dirstamps and --disable-dependency-tracking (bug?)", posted to the automake list in March 2011. I'm thus registering this bug in the automake tracker so that we won't forget about it.
Regards, Stefano -*-*-*- Reference: <http://lists.gnu.org/archive/html/automake/2011-03/msg00124.html> a.k.a.: <http://thread.gmane.org/gmane.comp.sysutils.automake.general/12768> -*-*-*- Original message follows ... -*-*-*- Hi, I suspect I found a bug in automake 1.11.1 . I have a project in which some program has .ll and .yy sources that must be generated by flex and bison. It also happens I need to have specific preprocessor options passed to that program using a _CPPFLAGS variable. This makes everything produced for that program prefixed with the program name. Besides, I need to use the subdir-objects automake option. Now the problem is that some subdirectories are not created automatically in $(builddir) as expected and I think I have found why. It happens when configure is called with --disable-dependency-tracking, as is usually the case when called through debhelper. In the attached tarball, there is a minimal setup illustrating the problem. Try to configure and build the project in a separate build directory and you should be able to observe how automake fails to create $(builddir)/src before calling ylwrap to generate src/bug-scanner.cc . The Makefile has the following rule (number 1): src/bug-scanner.$(OBJEXT): src/$(am__dirstamp) \ src/$(DEPDIR)/$(am__dirstamp) But the bug_CPPFLAGS line in Makefile.am ultimately leads to the production of the following rule (number 2): src/bug-scanner.o: src/scanner.cc ... Whereas there is *no* rule of the kind : src/scanner.cc: src/$(am__dirstamp) ... This looks like src/scanner.cc gets regenerated *before* src/$(am_dirstamp) gets a chance to be considered, supposedly because of the explicit rule number 2. Does anybody know of a clean fix/workaround? Thanks. Ignacy
automake-dirstamp-bug.tar.gz
Description: application/compressed-tar
