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(toplevel patch) Dependency tidy.

From: Nathanael Nerode <neroden at twcny dot rr dot com>
To: gcc-patches at gcc dot gnu dot org, gdb-patches at sources dot redhat dot com, binutils at sources dot redhat dot com, dj at redhat dot com
Date: Sat, 30 Nov 2002 09:14:21 -0500
Subject: (toplevel patch) Dependency tidy.
In light of what I know now, this rearranges dependencies in the order
which is actually the most convenient, and adds a certain number of
comments.  The diff is only useful to verify that for each line
I removed I added it elsewhere; the fulltext shows what it will look like.

DJ, this is now number two on my (new) outstanding patch list, after the
de-vault patch.

	* Makefile.tpl: Reorder and comment dependencies.
	* Makefile.in: Regenerate.

Index: Makefile.tpl
===================================================================
RCS file: /cvs/gcc/gcc/Makefile.tpl,v
retrieving revision 1.5.2.17
diff -u -r1.5.2.17 Makefile.tpl
--- Makefile.tpl	26 Nov 2002 20:07:21 -0000	1.5.2.17
+++ Makefile.tpl	30 Nov 2002 14:09:59 -0000
@@ -1172,90 +1172,112 @@
 	  true; \
 	fi
 
-ALL_GCC = maybe-all-gcc
-ALL_GCC_C = $(ALL_GCC) maybe-all-target-newlib maybe-all-target-libgloss
-ALL_GCC_CXX = $(ALL_GCC_C) maybe-all-target-libstdc++-v3
+# --------------------------------------
+# Dependencies between different modules
+# --------------------------------------
 
-# This is a list of inter-dependencies among modules.
-all-autoconf: maybe-all-m4 maybe-all-texinfo
-all-automake: maybe-all-m4 maybe-all-texinfo
+# There are two types of dependencies here: 'hard' dependencies, where one
+# module simply won't build without the other; and 'soft' dependencies, where
+# if the depended-on module is missing, the depending module will do without
+# or find a substitute somewhere (perhaps installed).  Soft dependencies
+# are specified by depending on a 'maybe-' target.  If you're not sure,
+# it's safer to use a soft dependency.
+
+# Host modules specific to gcc.
+all-gcc: maybe-all-libiberty maybe-all-bison maybe-all-byacc maybe-all-binutils maybe-all-gas maybe-all-ld maybe-all-zlib
+# This is a slightly kludgy method of getting dependencies on 
+# all-build-libiberty correct; it would be better to build it every time.
+all-gcc: maybe-all-build-libiberty
+all-bootstrap: maybe-all-libiberty maybe-all-texinfo maybe-all-bison maybe-all-byacc maybe-all-binutils maybe-all-gas maybe-all-ld maybe-all-zlib
+
+# Host modules specific to gdb.
+GDB_TK = @GDB_TK@
+all-gdb: maybe-all-libiberty maybe-all-opcodes maybe-all-bfd maybe-all-mmalloc maybe-all-readline maybe-all-bison maybe-all-byacc maybe-all-sim $(gdbnlmrequirements) $(GDB_TK)
+install-gdb: maybe-install-tcl maybe-install-tk maybe-install-itcl maybe-install-tix maybe-install-libgui
+all-libgui: maybe-all-tcl maybe-all-tk maybe-all-itcl
+
+# Host modules specific to binutils.
 all-bfd: maybe-all-libiberty maybe-all-intl
 all-binutils: maybe-all-libiberty maybe-all-opcodes maybe-all-bfd maybe-all-flex maybe-all-bison maybe-all-byacc maybe-all-intl
-all-bison: maybe-all-texinfo
-configure-target-boehm-gc: $(ALL_GCC_C) maybe-configure-target-qthreads
+# We put install-opcodes before install-binutils because the installed
+# binutils might be on PATH, and they might need the shared opcodes
+# library.
+install-binutils: maybe-install-opcodes
+all-gas: maybe-all-libiberty maybe-all-opcodes maybe-all-bfd maybe-all-intl
+all-gprof: maybe-all-libiberty maybe-all-bfd maybe-all-opcodes maybe-all-intl
+all-ld: maybe-all-libiberty maybe-all-bfd maybe-all-opcodes maybe-all-bison maybe-all-byacc maybe-all-flex maybe-all-intl
+all-opcodes: maybe-all-bfd maybe-all-libiberty
+
+# Other host modules in the 'src' repository.
 all-dejagnu: maybe-all-tcl maybe-all-expect maybe-all-tk
-all-diff: maybe-all-libiberty
-configure-target-examples: $(ALL_GCC_C)
 all-expect: maybe-all-tcl maybe-all-tk
+all-itcl: maybe-all-tcl maybe-all-tk
+# We put install-tcl before install-itcl because itcl wants to run a
+# program on installation which uses the Tcl libraries.
+install-itcl: maybe-install-tcl
+all-sid: maybe-all-tcl maybe-all-tk
+install-sid: maybe-install-tcl maybe-install-tk
+all-sim: maybe-all-libiberty maybe-all-bfd maybe-all-opcodes maybe-all-readline
+all-tk: maybe-all-tcl
+all-tix: maybe-all-tcl maybe-all-tk
+all-texinfo: maybe-all-libiberty
+
+# Other host modules.  Warning, these are not well tested.
+all-autoconf: maybe-all-m4 maybe-all-texinfo
+all-automake: maybe-all-m4 maybe-all-texinfo
+all-bison: maybe-all-texinfo
+all-diff: maybe-all-libiberty
+all-fastjar: maybe-all-zlib maybe-all-libiberty
 all-fileutils: maybe-all-libiberty
 all-flex: maybe-all-libiberty maybe-all-bison maybe-all-byacc
-all-gas: maybe-all-libiberty maybe-all-opcodes maybe-all-bfd maybe-all-intl
-all-gcc: maybe-all-libiberty maybe-all-bison maybe-all-byacc maybe-all-binutils maybe-all-gas maybe-all-ld maybe-all-zlib
-all-bootstrap: maybe-all-libiberty maybe-all-texinfo maybe-all-bison maybe-all-byacc maybe-all-binutils maybe-all-gas maybe-all-ld maybe-all-zlib
-GDB_TK = @GDB_TK@
-all-gdb: maybe-all-libiberty maybe-all-opcodes maybe-all-bfd maybe-all-mmalloc maybe-all-readline maybe-all-bison maybe-all-byacc maybe-all-sim $(gdbnlmrequirements) $(GDB_TK)
-configure-target-gperf: $(ALL_GCC_CXX)
-all-target-gperf: maybe-all-target-libiberty maybe-all-target-libstdc++-v3
-all-gprof: maybe-all-libiberty maybe-all-bfd maybe-all-opcodes maybe-all-intl
 all-grep: maybe-all-libiberty
 all-gzip: maybe-all-libiberty
 all-hello: maybe-all-libiberty
-all-itcl: maybe-all-tcl maybe-all-tk
-all-ld: maybe-all-libiberty maybe-all-bfd maybe-all-opcodes maybe-all-bison maybe-all-byacc maybe-all-flex maybe-all-intl
-configure-target-libgloss: $(ALL_GCC)
-all-target-libgloss: maybe-configure-target-newlib
-all-libgui: maybe-all-tcl maybe-all-tk maybe-all-itcl
-configure-target-libffi: $(ALL_GCC_C) 
-configure-target-libjava: $(ALL_GCC_C) maybe-configure-target-zlib maybe-configure-target-boehm-gc maybe-configure-target-qthreads maybe-configure-target-libffi
-all-target-libjava: maybe-all-fastjar maybe-all-target-zlib maybe-all-target-boehm-gc maybe-all-target-qthreads maybe-all-target-libffi
-configure-target-libstdc++-v3: $(ALL_GCC_C)
-all-target-libstdc++-v3: maybe-all-target-libiberty
-configure-target-libf2c: $(ALL_GCC_C)
-all-target-libf2c: maybe-all-target-libiberty
-configure-target-libobjc: $(ALL_GCC_C)
-all-target-libobjc: maybe-all-target-libiberty
 all-m4: maybe-all-libiberty maybe-all-texinfo
 all-make: maybe-all-libiberty
-configure-target-newlib: $(ALL_GCC)
-configure-target-libtermcap: $(ALL_GCC_C)
-all-opcodes: maybe-all-bfd maybe-all-libiberty
 all-patch: maybe-all-libiberty
 all-prms: maybe-all-libiberty
-configure-target-qthreads: $(ALL_GCC_C)
 all-recode: maybe-all-libiberty
 all-sed: maybe-all-libiberty
 all-send-pr: maybe-all-prms
-all-sid: maybe-all-tcl maybe-all-tk
-all-sim: maybe-all-libiberty maybe-all-bfd maybe-all-opcodes maybe-all-readline
 all-snavigator: maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-tix maybe-all-db maybe-all-grep maybe-all-libgui
 all-tar: maybe-all-libiberty
 all-tclX: maybe-all-tcl maybe-all-tk
-all-tk: maybe-all-tcl
-all-texinfo: maybe-all-libiberty
-all-tix: maybe-all-tcl maybe-all-tk
-configure-target-winsup: $(ALL_GCC_C)
-all-target-winsup: maybe-all-target-libiberty maybe-all-target-libtermcap
 all-uudecode: maybe-all-libiberty
-configure-target-zlib: $(ALL_GCC_C)
-all-fastjar: maybe-all-zlib maybe-all-libiberty
+
+ALL_GCC = maybe-all-gcc
+ALL_GCC_C = $(ALL_GCC) maybe-all-target-newlib maybe-all-target-libgloss
+ALL_GCC_CXX = $(ALL_GCC_C) maybe-all-target-libstdc++-v3
+
+# Target modules specific to gcc.
+configure-target-boehm-gc: $(ALL_GCC_C) maybe-configure-target-qthreads
 configure-target-fastjar: maybe-configure-target-zlib
 all-target-fastjar: maybe-all-target-zlib maybe-all-target-libiberty
-configure-target-libiberty: $(ALL_GCC_C)
-install-gdb: maybe-install-tcl maybe-install-tk maybe-install-itcl maybe-install-tix maybe-install-libgui
-install-sid: maybe-install-tcl maybe-install-tk
-
-# We put install-opcodes before install-binutils because the installed
-# binutils might be on PATH, and they might need the shared opcodes
-# library.
-install-binutils: maybe-install-opcodes
+configure-target-libf2c: $(ALL_GCC_C)
+all-target-libf2c: maybe-all-target-libiberty
+configure-target-libffi: $(ALL_GCC_C) 
+configure-target-libjava: $(ALL_GCC_C) maybe-configure-target-zlib maybe-configure-target-boehm-gc maybe-configure-target-qthreads maybe-configure-target-libffi
+all-target-libjava: maybe-all-fastjar maybe-all-target-zlib maybe-all-target-boehm-gc maybe-all-target-qthreads maybe-all-target-libffi
+configure-target-libobjc: $(ALL_GCC_C)
+all-target-libobjc: maybe-all-target-libiberty
+configure-target-libstdc++-v3: $(ALL_GCC_C)
+all-target-libstdc++-v3: maybe-all-target-libiberty
+configure-target-zlib: $(ALL_GCC_C)
 
-# We put install-tcl before install-itcl because itcl wants to run a
-# program on installation which uses the Tcl libraries.
-install-itcl: maybe-install-tcl
+# Target modules in the 'src' repository.
+configure-target-examples: $(ALL_GCC_C)
+configure-target-libgloss: $(ALL_GCC)
+all-target-libgloss: maybe-configure-target-newlib
+configure-target-libiberty: $(ALL_GCC_C)
+configure-target-libtermcap: $(ALL_GCC_C)
+configure-target-newlib: $(ALL_GCC)
+configure-target-winsup: $(ALL_GCC_C)
+all-target-winsup: maybe-all-target-libiberty maybe-all-target-libtermcap
 
-# This is a slightly kludgy method of getting dependencies on 
-# all-build-libiberty correct; it would be better to build it every time.
-all-gcc: maybe-all-build-libiberty
+# Other target modules.  Warning, these are not well tested.
+configure-target-gperf: $(ALL_GCC_CXX)
+all-target-gperf: maybe-all-target-libiberty maybe-all-target-libstdc++-v3
+configure-target-qthreads: $(ALL_GCC_C)
 
 # Dependencies of all-build-foo on configure-build-foo.
 [+ FOR build_modules +]all-build-[+module+]: configure-build-[+module+]
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