modify dependency tracking code so that it:

1) inserts the pathname of the object file in the dependency file
   (currently, gcc will only generate the basename)
2) the directory tree within .deps mirrors the source tree, so that we use
   shorter filenames
problem 1 was reported to me by Tom Angert <angert@bellsouth.net>

1 files changed, 29 insertions, 10 deletions

diff --git a/source/Makefile.in b/source/Makefile.in
index dffcb4cf7cc..1ed9a6872fb 100644
--- a/source/Makefile.in
+++ b/source/Makefile.in
@@ -268,31 +268,49 @@ MAKEDIR = || exec false; \
 	  mkdir "$$dir" || \
 	  exec false; fi || exec false
 
+# the lines below containing `@MAINT@' are for atomatic dependency tracking
+# they will only work with GNU make, gcc and --enable-maintainer-mode
+# without --enable-maintainer-mode, they do nothing
 .c.o: @MAINT@ .deps/.dummy
 	@if (: >> $@ || : > $@) >/dev/null 2>&1; then rm -f $@; else \
 	 dir=`echo $@ | sed 's,/[^/]*$$,,;s,^$$,.,'` $(MAKEDIR); fi
+	@MAINT@@if (: >> .deps/$@ || : > .deps/$@) >/dev/null 2>&1; then :; \
+	@MAINT@ else dir=.deps/`echo $@ | sed 's,/[^/]*$$,,;s,^$$,.,'` \
+	@MAINT@      $(MAKEDIR); fi; rm -f .deps/$@ .deps/$@d
 	@echo Compiling $*.c
 	@$(CC) -I. -I$(srcdir) $(FLAGS) -c $< -o $@ \
-	@MAINT@ -Wp,-MD,.deps/`echo $* | sed s,/,_,g`.P && : >.deps/.stamp
-# the line above is for atomatic dependency tracking
-# it will only work with GNU make, gcc and --enable-maintainer-mode
-
+	@MAINT@ -Wp,-MD,.deps/$@ && \
+	@MAINT@sed 's|^'`echo $@ | sed 's,.*/,,'`':|$@:|' \
+	@MAINT@  <.deps/$@ >.deps/$@d && \
+	@MAINT@rm -f .deps/$@ && : >.deps/.stamp
 
 .c.po: @MAINT@ .deps/.dummy
 	@if (: >> $@ || : > $@) >/dev/null 2>&1; then rm -f $@; else \
 	  dir=`echo $@ | sed 's,/[^/]*$$,,;s,^$$,.,'` $(MAKEDIR); fi
+	@MAINT@@if (: >> .deps/$@ || : > .deps/$@) >/dev/null 2>&1; then :; \
+	@MAINT@ else dir=.deps/`echo $@ | sed 's,/[^/]*$$,,;s,^$$,.,'` \
+	@MAINT@      $(MAKEDIR); fi; rm -f .deps/$@ .deps/$@d
 	@echo Compiling $*.c with @PICFLAG@
 	@$(CC) -I. -I$(srcdir) $(FLAGS) @PICFLAG@ -c $< -o $*.po.o \
-	@MAINT@ -Wp,-MD,.deps/`echo $* | sed s,/,_,g`.P && : >.deps/.stamp
+	@MAINT@ -Wp,-MD,.deps/$@ && \
+	@MAINT@sed 's|^'`echo $*\.po\.o | sed 's,.*/,,'`':|$@:|' \
+	@MAINT@  <.deps/$@ >.deps/$@d && \
+	@MAINT@rm -f .deps/$@ && : >.deps/.stamp
 	@mv $*.po.o $@
 
 # this is for IRIX
 .c.po32: @MAINT@ .deps/.dummy
 	@if (: >> $@ || : > $@) >/dev/null 2>&1; then rm -f $@; else \
 	  dir=`echo $@ | sed 's,/[^/]*$$,,;s,^$$,.,'` $(MAKEDIR); fi
+	@MAINT@@if (: >> .deps/$@ || : > .deps/$@) >/dev/null 2>&1; then :; \
+	@MAINT@ else dir=.deps/`echo $@ | sed 's,/[^/]*$$,,;s,^$$,.,'` \
+	@MAINT@      $(MAKEDIR); fi; rm -f .deps/$@ .deps/$@d
 	@echo Compiling $*.c with @PICFLAG@ and -32
 	@$(CC) -32 -I. -I$(srcdir) $(FLAGS) @PICFLAG@ -c $< -o $*.po32.o \
-	@MAINT@ -Wp,-MD,.deps/`echo $* | sed s,/,_,g`.P && : >.deps/.stamp
+	@MAINT@ -Wp,-MD,.deps/$@ && \
+	@MAINT@sed 's|^'`echo $*.po32.o | sed 's,.*/,,'`':|$@:|' \
+	@MAINT@  <.deps/$@ >.deps/$@d && \
+	@MAINT@rm -f .deps/$@ && : >.deps/.stamp
 	@mv $*.po32.o $@
 
 bin/.dummy:
@@ -476,7 +494,7 @@ Makefile: $(srcdir)/Makefile.in config.status \
 	CONFIG_FILES=$@ CONFIG_HEADERS= $(SHELL) ./config.status
 
 # note that nothing depends on config.h, so will probably be rebuilt
-# only when explicitly requested
+# only when explicitly requested, unless dependency tracking is enabled
 include/config.h: include/stamp-h
 	@:
 
@@ -500,7 +518,8 @@ $(srcdir)/include/stamp-h.in: @MAINT@ $(srcdir)/acconfig.h $(srcdir)/configure.i
 .deps/.stamp: .deps/.dummy
 	@:
 
-.deps/.P: .deps/.stamp
-	@cat .deps/*.P >$@ 2>/dev/null || true
+.deps/depend: .deps/.stamp
+	@echo Updating dependencies
+	@: | cat `find .deps -type f -name \*d` >$@ 2>/dev/null || true
 
-@MAINT@-include .deps/.P
+@MAINT@-include .deps/depend