1290001Sglebius$(DEPDIR)/deps-ver: $(top_srcdir)/deps-ver 2290001Sglebius @[ -f $@ ] || \ 3290001Sglebius cp $(top_srcdir)/deps-ver $@ 4290001Sglebius @[ -w $@ ] || \ 5290001Sglebius chmod ug+w $@ 6290001Sglebius @cmp $(top_srcdir)/deps-ver $@ > /dev/null || ( \ 7290001Sglebius $(MAKE) $(AM_MAKEFLAGS) clean && \ 8290001Sglebius echo -n "Prior $(subdir)/$(DEPDIR) version " && \ 9290001Sglebius cat $@ && \ 10290001Sglebius rm -rf $(DEPDIR) && \ 11290001Sglebius mkdir $(DEPDIR) && \ 12290001Sglebius case "$(top_builddir)" in \ 13290001Sglebius .) \ 14290001Sglebius ./config.status Makefile depfiles \ 15290001Sglebius ;; \ 16290001Sglebius *) \ 17290001Sglebius cd "$(top_builddir)" && \ 18290001Sglebius ./config.status $(subdir)/Makefile depfiles && \ 19290001Sglebius cd $(subdir) \ 20290001Sglebius ;; \ 21290001Sglebius esac && \ 22290001Sglebius echo -n "Cleaned $(subdir)/$(DEPDIR) version " && \ 23290001Sglebius cat $(top_srcdir)/deps-ver \ 24290001Sglebius ) 25290001Sglebius cp $(top_srcdir)/deps-ver $@ 26290001Sglebius 27290001Sglebius.deps-ver: $(top_srcdir)/deps-ver 28290001Sglebius @[ ! -d $(DEPDIR) ] || $(MAKE) $(AM_MAKEFLAGS) $(DEPDIR)/deps-ver 29290001Sglebius @touch $@ 30290001Sglebius 31290001SglebiusBUILT_SOURCES += .deps-ver 32290001SglebiusCLEANFILES += .deps-ver 33290001Sglebius 34290001Sglebius# 35290001Sglebius# depsver.mf included in Makefile.am for directories with .deps 36290001Sglebius# 37290001Sglebius# When building in the same directory with sources that change over 38290001Sglebius# time, such as when tracking using bk, the .deps files can become 39290001Sglebius# stale with respect to moved, deleted, or superceded headers. Most 40290001Sglebius# commonly, this would exhibit as make reporting a failure to make a 41290001Sglebius# header file which is no longer in the location given. To address 42290001Sglebius# this issue, we use a deps-ver file which is updated with each change 43290001Sglebius# that breaks old .deps files. A copy of deps-ver is made into 44290001Sglebius# $(DEPDIR) if not already present. If $(DEPDIR)/deps-ver is present 45290001Sglebius# with different contents than deps-ver, we make clean to ensure all 46290001Sglebius# .o files built before the incompatible change are rebuilt along with 47290001Sglebius# their updated .deps files, then remove $(DEPDIR) and recreate it as 48290001Sglebius# empty stubs. 49290001Sglebius# 50290001Sglebius# It is normal when configured with --disable-dependency-tracking for 51290001Sglebius# the DEPDIR to not have been created. For this reason, we use the 52290001Sglebius# intermediate target .deps-ver, which invokes make recursively if 53290001Sglebius# DEPDIR exists. 54290001Sglebius# 55290001Sglebius# If you modify depsver.mf, please make the changes to the master 56290001Sglebius# copy, the one in sntp is copied by the bootstrap script from it. 57290001Sglebius# 58290001Sglebius# This comment block follows rather than leads the related code so that 59290001Sglebius# it stays with it in the generated Makefile.in and Makefile. 60290001Sglebius# 61