1258945Sroberto$(DEPDIR)/deps-ver: $(top_srcdir)/deps-ver 2258945Sroberto @[ -f $@ ] || \ 3258945Sroberto cp $(top_srcdir)/deps-ver $@ 4258945Sroberto @[ -w $@ ] || \ 5258945Sroberto chmod ug+w $@ 6258945Sroberto @cmp $(top_srcdir)/deps-ver $@ > /dev/null || ( \ 7280849Scy $(MAKE) $(AM_MAKEFLAGS) clean && \ 8258945Sroberto echo -n "Prior $(subdir)/$(DEPDIR) version " && \ 9258945Sroberto cat $@ && \ 10258945Sroberto rm -rf $(DEPDIR) && \ 11258945Sroberto mkdir $(DEPDIR) && \ 12258945Sroberto case "$(top_builddir)" in \ 13258945Sroberto .) \ 14258945Sroberto ./config.status Makefile depfiles \ 15258945Sroberto ;; \ 16258945Sroberto *) \ 17280849Scy cd "$(top_builddir)" && \ 18280849Scy ./config.status $(subdir)/Makefile depfiles && \ 19280849Scy cd $(subdir) \ 20258945Sroberto ;; \ 21258945Sroberto esac && \ 22258945Sroberto echo -n "Cleaned $(subdir)/$(DEPDIR) version " && \ 23258945Sroberto cat $(top_srcdir)/deps-ver \ 24258945Sroberto ) 25258945Sroberto cp $(top_srcdir)/deps-ver $@ 26258945Sroberto 27258945Sroberto.deps-ver: $(top_srcdir)/deps-ver 28280849Scy @[ ! -d $(DEPDIR) ] || $(MAKE) $(AM_MAKEFLAGS) $(DEPDIR)/deps-ver 29258945Sroberto @touch $@ 30258945Sroberto 31258945SrobertoBUILT_SOURCES += .deps-ver 32258945SrobertoCLEANFILES += .deps-ver 33258945Sroberto 34258945Sroberto# 35258945Sroberto# depsver.mf included in Makefile.am for directories with .deps 36258945Sroberto# 37258945Sroberto# When building in the same directory with sources that change over 38258945Sroberto# time, such as when tracking using bk, the .deps files can become 39258945Sroberto# stale with respect to moved, deleted, or superceded headers. Most 40258945Sroberto# commonly, this would exhibit as make reporting a failure to make a 41258945Sroberto# header file which is no longer in the location given. To address 42258945Sroberto# this issue, we use a deps-ver file which is updated with each change 43258945Sroberto# that breaks old .deps files. A copy of deps-ver is made into 44258945Sroberto# $(DEPDIR) if not already present. If $(DEPDIR)/deps-ver is present 45258945Sroberto# with different contents than deps-ver, we make clean to ensure all 46258945Sroberto# .o files built before the incompatible change are rebuilt along with 47258945Sroberto# their updated .deps files, then remove $(DEPDIR) and recreate it as 48258945Sroberto# empty stubs. 49258945Sroberto# 50258945Sroberto# It is normal when configured with --disable-dependency-tracking for 51258945Sroberto# the DEPDIR to not have been created. For this reason, we use the 52258945Sroberto# intermediate target .deps-ver, which invokes make recursively if 53258945Sroberto# DEPDIR exists. 54258945Sroberto# 55258945Sroberto# If you modify depsver.mf, please make the changes to the master 56258945Sroberto# copy, the one in sntp is copied by the bootstrap script from it. 57258945Sroberto# 58258945Sroberto# This comment block follows rather than leads the related code so that 59258945Sroberto# it stays with it in the generated Makefile.in and Makefile. 60258945Sroberto# 61