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Automatic dependency tracking
The .DEFAULT rule in backend/Makefile is harmful -- removed. Replace `::' rules by `:'.
This commit is contained in:
@ -7,7 +7,7 @@
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#
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#
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# IDENTIFICATION
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# $Header: /cvsroot/pgsql/src/Makefile.global.in,v 1.86 2000/07/09 13:13:59 petere Exp $
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# $Header: /cvsroot/pgsql/src/Makefile.global.in,v 1.87 2000/07/16 14:50:41 petere Exp $
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#
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# NOTES
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# Essentially all Postgres make files include this file and use the
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@ -283,3 +283,71 @@ STRDUP = @STRDUP@
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.PHONY: all install installdirs uninstall dep depend clean distclean maintainer-clean
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.SILENT: installdirs
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# make `all' the default target
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all:
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$(top_builddir)/src/Makefile.global: $(top_srcdir)/src/Makefile.global.in $(top_builddir)/config.status
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cd $(top_builddir) && CONFIG_FILES=src/Makefile.global CONFIG_HEADERS= ./config.status
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$(top_builddir)/config.status: $(top_srcdir)/configure
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cd $(top_builddir) && ./config.status --recheck
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COMPILE.c = $(CC) -c $(CPPFLAGS) $(CFLAGS)
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# Automatic dependency generation
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# -------------------------------
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# When we configure with --enable-depend then we override the default
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# compilation rule with the magic below. While or after creating the
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# actual output file we also create a dependency list for the .c file.
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# Next time we invoke make we will have top-notch information about
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# whether this file needs to be updated. The dependency files are kept
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# in the .deps subdirectory of each directory.
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#
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# The sed command is necessary to post-process the dependency file:
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# Each dependency file becomes a target of its own, without
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# dependencies or commands. This is because if you happen to remove a
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# file that is a dependency (say, you rename a header file) the
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# dependency would point to a non-existing file and make would fail.
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# But if the file is listed as a target of its own, without
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# prerequisites and commands, and doesn't exist then make will
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# consider it updated. (That in turn also has the nice side effect
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# that make will update all files that depended on the now removed
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# file.)
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autodepend = @autodepend@
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ifdef autodepend
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DEPDIR = .deps
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df = $(DEPDIR)/$(*F)
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ifeq ($(GCC), yes)
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# GCC allows us to create object and dependency file in one invocation.
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%.o : %.c
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$(COMPILE.c) -MMD $< -o $@
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@if test ! -d $(DEPDIR); then mkdir $(DEPDIR); fi; \
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cp $*.d $(df).P; \
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sed -e 's/#.*//' -e 's/^[^:]*: *//' -e 's/ *\\$$//' \
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-e '/^$$/ d' -e 's/$$/ :/' < $*.d >> $(df).P; \
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rm -f $*.d
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endif # GCC
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# Include all the dependency files generated for the current
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# directory. List /dev/null as dummy because if the wildcard expands
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# to nothing then make would complain.
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-include $(wildcard $(DEPDIR)/*.P) /dev/null
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# hook for clean-up
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clean: clean-deps
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.PHONY: clean-deps
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clean-deps:
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@rm -rf $(DEPDIR)
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endif # autodepend
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@ -4,7 +4,7 @@
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#
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# Copyright (c) 1994, Regents of the University of California
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#
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# $Header: /cvsroot/pgsql/src/backend/Makefile,v 1.61 2000/07/14 15:30:56 thomas Exp $
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# $Header: /cvsroot/pgsql/src/backend/Makefile,v 1.62 2000/07/16 14:50:44 petere Exp $
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#
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#-------------------------------------------------------------------------
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@ -188,6 +188,3 @@ quick: $(OBJS)
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depend dep: $(top_srcdir)/src/include/parser/parse.h $(top_builddir)/src/include/utils/fmgroids.h
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for i in $(DIRS); do $(MAKE) -C $$i $@; done
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.DEFAULT:
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for i in $(DIRS); do $(MAKE) -C $$i $@; done
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