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Patch from Robert Millan for kfreebsd-gnu/knetbsd-gnu.
[pf3gnuchains/gcc-fork.git] / Makefile.tpl
index 6ffecc8..27ab1fb 100644 (file)
@@ -68,6 +68,8 @@ INSTALL = @INSTALL@
 INSTALL_PROGRAM = @INSTALL_PROGRAM@
 INSTALL_SCRIPT = @INSTALL_SCRIPT@
 INSTALL_DATA = @INSTALL_DATA@
+LN = @LN@
+LN_S = @LN_S@
 
 # -------------------------------------------------
 # Miscellaneous non-standard autoconf-set variables
@@ -111,11 +113,23 @@ BUILD_SUBDIR = @build_subdir@
 # This is set by the configure script to the arguments to use when configuring
 # directories built for the build system.
 BUILD_CONFIGARGS = @build_configargs@
+
+# This is the list of variables to export in the environment when
+# configuring any subdirectory.  It must also be exported whenever
+# recursing into a build directory in case that directory's Makefile
+# re-runs configure.
+BASE_EXPORTS = \
+       FLEX="$(FLEX)"; export FLEX; \
+       LEX="$(LEX)"; export LEX; \
+       BISON="$(BISON)"; export BISON; \
+       YACC="$(YACC)"; export YACC; \
+       M4="$(M4)"; export M4; \
+       MAKEINFO="$(MAKEINFO)"; export MAKEINFO;
+
 # This is the list of variables to export in the environment when
-# configuring subdirectories for the build system.  It must also be
-# exported whenever recursing into a build directory in case that
-# directory's Makefile re-runs configure.
+# configuring subdirectories for the build system.
 BUILD_EXPORTS = \
+       $(BASE_EXPORTS) \
        AR="$(AR_FOR_BUILD)"; export AR; \
        AS="$(AS_FOR_BUILD)"; export AS; \
        CC="$(CC_FOR_BUILD)"; export CC; \
@@ -138,10 +152,9 @@ SUBDIRS = @configdirs@
 # directories built for the host system.
 HOST_CONFIGARGS = @host_configargs@
 # This is the list of variables to export in the environment when
-# configuring subdirectories for the host system.  It must also be
-# exported whenever recursing into a host directory in case that
-# directory's Makefile re-runs configure.
+# configuring subdirectories for the host system.
 HOST_EXPORTS = \
+       $(BASE_EXPORTS) \
        CC="$(CC)"; export CC; \
        CFLAGS="$(CFLAGS)"; export CFLAGS; \
        CONFIG_SHELL="$(SHELL)"; export CONFIG_SHELL; \
@@ -157,18 +170,14 @@ HOST_EXPORTS = \
        RANLIB="$(RANLIB)"; export RANLIB; \
        WINDRES="$(WINDRES)"; export WINDRES; \
        OBJCOPY="$(OBJCOPY)"; export OBJCOPY; \
-       OBJDUMP="$(OBJDUMP)"; export OBJDUMP;
-
-# Similar, for the gcc directory.
-GCC_HOST_EXPORTS = \
-       $(HOST_EXPORTS) \
+       OBJDUMP="$(OBJDUMP)"; export OBJDUMP; \
        TOPLEVEL_CONFIGURE_ARGUMENTS="$(TOPLEVEL_CONFIGURE_ARGUMENTS)"; export TOPLEVEL_CONFIGURE_ARGUMENTS; \
        GMPLIBS="$(HOST_GMPLIBS)"; export GMPLIBS; \
        GMPINC="$(HOST_GMPINC)"; export GMPINC;
 
 # Similar, for later GCC stages.
 STAGE_HOST_EXPORTS = \
-       $(GCC_HOST_EXPORTS) \
+       $(HOST_EXPORTS) \
        CC="$(STAGE_CC_WRAPPER) $$r/prev-gcc/xgcc$(exeext) -B$$r/prev-gcc/ -B$(build_tooldir)/bin/"; export CC; \
        CC_FOR_BUILD="$(STAGE_CC_WRAPPER) $$r/prev-gcc/xgcc$(exeext) -B$$r/prev-gcc/ -B$(build_tooldir)/bin/"; export CC_FOR_BUILD;
 
@@ -181,10 +190,9 @@ TARGET_SUBDIR = @target_subdir@
 # directories built for the target.
 TARGET_CONFIGARGS = @target_configargs@
 # This is the list of variables to export in the environment when
-# configuring subdirectories for the host system.  It must also be
-# exported whenever recursing into a host directory in case that
-# directory's Makefile re-runs configure.
+# configuring subdirectories for the host system.
 BASE_TARGET_EXPORTS = \
+       $(BASE_EXPORTS) \
        AR="$(AR_FOR_TARGET)"; export AR; \
        AS="$(AS_FOR_TARGET)"; export AS; \
        CC="$(CC_FOR_TARGET)"; export CC; \
@@ -240,42 +248,47 @@ CXX_FOR_BUILD = $(CXX)
 BUILD_PREFIX = @BUILD_PREFIX@
 BUILD_PREFIX_1 = @BUILD_PREFIX_1@
 
-BISON=@BISON@
-USUAL_BISON = `if [ -f $$r/bison/bison ] ; then \
-           echo $$r/bison/bison -L $$s/bison/ ; \
+CONFIGURED_BISON = @CONFIGURED_BISON@
+BISON = `if [ -f $$r/$(BUILD_SUBDIR)/bison/tests/bison ] ; then \
+           echo $$r/$(BUILD_SUBDIR)/bison/tests/bison ; \
         else \
-           echo bison ; \
+           echo ${CONFIGURED_BISON} ; \
         fi`
 
-DEFAULT_YACC = @DEFAULT_YACC@
-YACC=@YACC@
-USUAL_YACC = `if [ -f $$r/bison/bison ] ; then \
-           echo $$r/bison/bison -y -L $$s/bison/ ; \
-       elif [ -f $$r/byacc/byacc ] ; then \
-           echo $$r/byacc/byacc ; \
+CONFIGURED_YACC = @CONFIGURED_YACC@
+YACC = `if [ -f $$r/$(BUILD_SUBDIR)/bison/tests/bison ] ; then \
+           echo $$r/$(BUILD_SUBDIR)/bison/tests/bison -y ; \
+       elif [ -f $$r/$(BUILD_SUBDIR)/byacc/byacc ] ; then \
+           echo $$r/$(BUILD_SUBDIR)/byacc/byacc ; \
        else \
-           echo ${DEFAULT_YACC} ; \
+           echo ${CONFIGURED_YACC} ; \
        fi`
 
-DEFAULT_LEX = @DEFAULT_LEX@
-LEX=@LEX@
-USUAL_LEX = `if [ -f $$r/flex/flex ] ; \
-       then echo $$r/flex/flex ; \
-       else echo ${DEFAULT_LEX} ; fi`
+CONFIGURED_FLEX = @CONFIGURED_FLEX@
+FLEX = `if [ -f $$r/$(BUILD_SUBDIR)/flex/flex ] ; \
+       then echo $$r/$(BUILD_SUBDIR)/flex/flex ; \
+       else echo ${CONFIGURED_FLEX} ; fi`
+
+CONFIGURED_LEX = @CONFIGURED_LEX@
+LEX = `if [ -f $$r/$(BUILD_SUBDIR)/flex/flex ] ; \
+       then echo $$r/$(BUILD_SUBDIR)/flex/flex ; \
+       else echo ${CONFIGURED_LEX} ; fi`
 
-DEFAULT_M4 = @DEFAULT_M4@
-M4 = `if [ -f $$r/m4/m4 ] ; \
-       then echo $$r/m4/m4 ; \
-       else echo ${DEFAULT_M4} ; fi`
+CONFIGURED_M4 = @CONFIGURED_M4@
+M4 = `if [ -f $$r/$(BUILD_SUBDIR)/m4/m4 ] ; \
+       then echo $$r/$(BUILD_SUBDIR)/m4/m4 ; \
+       else echo ${CONFIGURED_M4} ; fi`
 
 # For an installed makeinfo, we require it to be from texinfo 4.2 or
-# higher, else we use the "missing" dummy.
-MAKEINFO=@MAKEINFO@
-USUAL_MAKEINFO = `if [ -f $$r/texinfo/makeinfo/makeinfo ] ; \
-       then echo $$r/texinfo/makeinfo/makeinfo ; \
-       else if (makeinfo --version \
+# higher, else we use the "missing" dummy.  We also pass the subdirectory
+# makeinfo even if only the Makefile is there, because Texinfo builds its
+# manual when made, and it requires its own version.
+CONFIGURED_MAKEINFO = @CONFIGURED_MAKEINFO@
+MAKEINFO = `if [ -f $$r/$(BUILD_SUBDIR)/texinfo/makeinfo/Makefile ] ; \
+       then echo $$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo ; \
+       else if (${CONFIGURED_MAKEINFO} --version \
          | egrep 'texinfo[^0-9]*([1-3][0-9]|4\.[2-9]|[5-9])') >/dev/null 2>&1; \
-        then echo makeinfo; else echo $$s/missing makeinfo; fi; fi`
+        then echo ${CONFIGURED_MAKEINFO}; else echo $$s/missing makeinfo; fi; fi`
 
 # This just becomes part of the MAKEINFO definition passed down to
 # sub-makes.  It lets flags be given on the command line while still
@@ -468,6 +481,14 @@ PICFLAG_FOR_TARGET =
 # Miscellaneous targets and flag lists
 # ------------------------------------
 
+@if gcc-bootstrap
+# Let's leave this as the first rule in the file until toplevel
+# bootstrap is fleshed out completely.
+sorry:
+       @echo Toplevel bootstrap temporarily out of commission.
+       @echo Please reconfigure without --enable-bootstrap
+@endif gcc-bootstrap
+
 # The first rule in the file had better be this one.  Don't put any above it.
 # This lives here to allow makefile fragments to contain dependencies.
 @default_target@:
@@ -494,6 +515,8 @@ RECURSE_FLAGS = \
        CXX_FOR_TARGET='$(CXX_FOR_TARGET_FOR_RECURSIVE_MAKE)' \
        RAW_CXX_FOR_TARGET='$(RAW_CXX_FOR_TARGET_FOR_RECURSIVE_MAKE)' \
 
+RECURSE_FLAGS_TO_PASS = $(BASE_FLAGS_TO_PASS) $(RECURSE_FLAGS)
+
 # Flags to pass down to most sub-makes, in which we're building with
 # the host environment.
 EXTRA_HOST_FLAGS = \
@@ -565,7 +588,7 @@ EXTRA_GCC_FLAGS = \
 GCC_FLAGS_TO_PASS = $(BASE_FLAGS_TO_PASS) $(EXTRA_HOST_FLAGS) $(EXTRA_GCC_FLAGS)
 
 .PHONY: configure-host
-configure-host: maybe-configure-gcc [+
+configure-host: [+
   FOR host_modules +] \
     maybe-configure-[+module+][+
   ENDFOR host_modules +]
@@ -577,10 +600,15 @@ configure-target: [+
 
 # The target built for a native non-bootstrap build.
 .PHONY: all
-all: @all_build_modules@ all-host all-target
+all: unstage all-host all-target stage
 
+.PHONY: all-build
+all-build: [+
+  FOR build_modules +] \
+    maybe-all-build-[+module+][+
+  ENDFOR build_modules +]
 .PHONY: all-host
-all-host: maybe-all-gcc [+
+all-host: [+
   FOR host_modules +] \
     maybe-all-[+module+][+
   ENDFOR host_modules +]
@@ -596,10 +624,10 @@ all-target: [+
 # but it may do additional work as well).
 [+ FOR recursive_targets +]
 .PHONY: do-[+make_target+]
-do-[+make_target+]: [+make_target+]-host [+make_target+]-target
+do-[+make_target+]: unstage [+make_target+]-host [+make_target+]-target stage
 
 .PHONY: [+make_target+]-host
-[+make_target+]-host: maybe-[+make_target+]-gcc [+
+[+make_target+]-host: [+
   FOR host_modules +] \
     maybe-[+make_target+]-[+module+][+
   ENDFOR host_modules +]
@@ -671,13 +699,13 @@ clean-target-libgcc:
 check: do-check
 
 # Only include modules actually being configured and built.
-do-check: maybe-check-gcc [+
+do-check: unstage [+
   FOR host_modules +] \
     maybe-check-[+module+][+
   ENDFOR host_modules +][+
   FOR target_modules +] \
     maybe-check-target-[+module+][+
-  ENDFOR target_modules +]
+  ENDFOR target_modules +] stage
 
 # Automated reporting of test results.
 
@@ -707,12 +735,12 @@ install: installdirs install-host install-target
 
 .PHONY: install-host-nogcc
 install-host-nogcc: [+
-  FOR host_modules +] \
-    maybe-install-[+module+][+
+  FOR host_modules +][+ IF (not (= (get "module") "gcc")) +] \
+    maybe-install-[+module+][+ ENDIF +][+
   ENDFOR host_modules +]
 
 .PHONY: install-host
-install-host: maybe-install-gcc [+
+install-host: [+
   FOR host_modules +] \
     maybe-install-[+module+][+
   ENDFOR host_modules +]
@@ -731,7 +759,7 @@ install.all: install-no-fixedincludes
        @if [ -f ./gcc/Makefile ] ; then \
                r=`${PWD_COMMAND}` ; export r ; \
                $(SET_LIB_PATH) \
-               $(GCC_HOST_EXPORTS) \
+               $(HOST_EXPORTS) \
                (cd ./gcc && \
                $(MAKE) $(FLAGS_TO_PASS) install-headers) ; \
        else \
@@ -826,19 +854,21 @@ configure-build-[+module+]:
        rm -f no-such-file || : ; \
        CONFIG_SITE=no-such-file $(SHELL) $${libsrcdir}/configure \
          $(BUILD_CONFIGARGS) $${srcdiroption} \
-         --with-build-subdir="$(BUILD_SUBDIR)" \
+         --with-build-subdir="$(BUILD_SUBDIR)" [+extra_configure_flags+] \
          || exit 1
 @endif build-[+module+]
 
 .PHONY: all-build-[+module+] maybe-all-build-[+module+]
 maybe-all-build-[+module+]:
 @if build-[+module+]
+TARGET-build-[+module+]=[+ IF target +][+target+][+ ELSE +]all[+ ENDIF target +]
 maybe-all-build-[+module+]: all-build-[+module+]
 all-build-[+module+]: configure-build-[+module+]
        @r=`${PWD_COMMAND}`; export r; \
        s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
        $(BUILD_EXPORTS) \
-       (cd $(BUILD_SUBDIR)/[+module+] && $(MAKE) all)
+       (cd $(BUILD_SUBDIR)/[+module+] && \
+         $(MAKE) [+extra_make_flags+] $(TARGET-build-[+module+]))
 @endif build-[+module+]
 [+ ENDFOR build_modules +]
 
@@ -851,7 +881,8 @@ maybe-configure-[+module+]:
 @if [+module+]
 maybe-configure-[+module+]: configure-[+module+]
 configure-[+module+]:
-       @test ! -f [+module+]/Makefile || exit 0; \
+       @[+ IF bootstrap +]test -f stage_last && exit 0; \
+       [+ ENDIF bootstrap +]test ! -f [+module+]/Makefile || exit 0; \
        [ -d [+module+] ] || mkdir [+module+]; \
        r=`${PWD_COMMAND}`; export r; \
        s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
@@ -870,7 +901,7 @@ configure-[+module+]:
            libsrcdir="$$s/[+module+]";; \
        esac; \
        $(SHELL) $${libsrcdir}/configure \
-         $(HOST_CONFIGARGS) $${srcdiroption} \
+         $(HOST_CONFIGARGS) $${srcdiroption} [+extra_configure_flags+] \
          || exit 1
 @endif [+module+]
 
@@ -879,14 +910,18 @@ maybe-all-[+module+]:
 @if [+module+]
 maybe-all-[+module+]: all-[+module+]
 all-[+module+]: configure-[+module+]
-       @r=`${PWD_COMMAND}`; export r; \
+       @[+ IF bootstrap +]test -f stage_last && exit 0; \
+       [+ ENDIF bootstrap +]r=`${PWD_COMMAND}`; export r; \
        s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
        $(SET_LIB_PATH) \
        $(HOST_EXPORTS) \
        (cd [+module+] && $(MAKE) $(FLAGS_TO_PASS)[+ 
          IF with_x 
            +] $(X11_FLAGS_TO_PASS)[+ 
-         ENDIF with_x +] all)
+         ENDIF with_x +] [+extra_make_flags+] [+
+         IF (== (get "module") "gcc") +] \
+           `if [ -f gcc/stage_last ]; then echo quickstrap ; else echo all; fi` [+
+         ELSE +]all[+ ENDIF +])
 @endif [+module+]
 
 .PHONY: check-[+module+] maybe-check-[+module+]
@@ -903,10 +938,8 @@ check-[+module+]:
          s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
          $(SET_LIB_PATH) \
          $(HOST_EXPORTS) \
-         (cd [+module+] && $(MAKE) $(FLAGS_TO_PASS)[+ 
-           IF with_x 
-             +] $(X11_FLAGS_TO_PASS)[+ 
-           ENDIF with_x +] check); \
+         (cd [+module+] && $(MAKE) $(FLAGS_TO_PASS) [+ 
+           extra_make_flags+] check); \
        fi
 [+ ELSE check +]
 check-[+module+]:
@@ -915,9 +948,7 @@ check-[+module+]:
        $(SET_LIB_PATH) \
        $(HOST_EXPORTS) \
        (cd [+module+] && $(MAKE) $(FLAGS_TO_PASS)[+ 
-         IF with_x 
-           +] $(X11_FLAGS_TO_PASS)[+ 
-         ENDIF with_x +] check)
+         extra_make_flags+] check)
 [+ ENDIF no_check +]
 @endif [+module+]
 
@@ -934,9 +965,7 @@ install-[+module+]: installdirs
        $(SET_LIB_PATH) \
        $(HOST_EXPORTS) \
        (cd [+module+] && $(MAKE) $(FLAGS_TO_PASS)[+ 
-         IF with_x 
-           +] $(X11_FLAGS_TO_PASS)[+ 
-         ENDIF with_x +] install)
+         extra_make_flags+] install)
 [+ ENDIF no_install +]
 @endif [+module+]
 
@@ -959,7 +988,7 @@ maybe-[+make_target+]-[+module+]: [+make_target+]-[+module+]
        s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
        $(SET_LIB_PATH) \
        $(HOST_EXPORTS) \
-       for flag in $(EXTRA_HOST_FLAGS); do \
+       for flag in $(EXTRA_HOST_FLAGS) [+extra_make_flags+]; do \
          eval `echo "$$flag" | sed -e "s|^\([^=]*\)=\(.*\)|\1='\2'; export \1|"`; \
        done; \
        echo "Doing [+make_target+] in [+module+]" ; \
@@ -1039,13 +1068,14 @@ ENDIF raw_cxx +]
        rm -f no-such-file || : ; \
        CONFIG_SITE=no-such-file $(SHELL) $${libsrcdir}/configure \
          $(TARGET_CONFIGARGS) $${srcdiroption} \
-         --with-target-subdir="$(TARGET_SUBDIR)" \
+         --with-target-subdir="$(TARGET_SUBDIR)" [+extra_configure_flags+] \
          || exit 1
 @endif target-[+module+]
 
 .PHONY: all-target-[+module+] maybe-all-target-[+module+]
 maybe-all-target-[+module+]:
 @if target-[+module+]
+TARGET-target-[+module+]=[+ IF target +][+target+][+ ELSE +]all[+ ENDIF target +]
 maybe-all-target-[+module+]: all-target-[+module+]
 all-target-[+module+]: configure-target-[+module+]
        @r=`${PWD_COMMAND}`; export r; \
@@ -1061,7 +1091,7 @@ ENDIF raw_cxx +]
            IF raw_cxx 
          +] 'CXX=$$(RAW_CXX_FOR_TARGET)' 'CXX_FOR_TARGET=$$(RAW_CXX_FOR_TARGET)' [+ 
            ENDIF raw_cxx 
-         +] all)
+         +] [+extra_make_flags+] $(TARGET-target-[+module+]))
 @endif target-[+module+]
 
 .PHONY: check-target-[+module+] maybe-check-target-[+module+]
@@ -1086,7 +1116,7 @@ ENDIF raw_cxx +]
            IF raw_cxx 
              +] 'CXX=$$(RAW_CXX_FOR_TARGET)' 'CXX_FOR_TARGET=$$(RAW_CXX_FOR_TARGET)' [+ 
            ENDIF raw_cxx 
-         +] check)
+         +] [+extra_make_flags+] check)
 [+ ENDIF no_check +]
 @endif target-[+module+]
 
@@ -1108,7 +1138,7 @@ ELSE normal_cxx +]
        $(NORMAL_TARGET_EXPORTS) \[+
 ENDIF raw_cxx +]
        (cd $(TARGET_SUBDIR)/[+module+] && \
-         $(MAKE) $(TARGET_FLAGS_TO_PASS) install)
+         $(MAKE) $(TARGET_FLAGS_TO_PASS) [+extra_make_flags+] install)
 [+ ENDIF no_install +]
 @endif target-[+module+]
 
@@ -1144,7 +1174,7 @@ ENDIF raw_cxx +]
                  "CC=$${CC}" "CXX=$${CXX}" "LD=$${LD}" "NM=$${NM}" \
                  "RANLIB=$${RANLIB}" \
                  "DLLTOOL=$${DLLTOOL}" "WINDRES=$${WINDRES}" \
-                 [+make_target+]) \
+                 [+extra_make_flags+] [+make_target+]) \
          || exit 1
 [+ ENDIF +]
 @endif target-[+module+]
@@ -1155,83 +1185,18 @@ ENDIF raw_cxx +]
 # GCC module
 # ----------
 
-# Unfortunately, while gcc _should_ be a host module,
-# libgcc is a target module, and gen* programs are
-# build modules.  So GCC is a sort of hybrid.
-
-# gcc is the only module which uses GCC_FLAGS_TO_PASS.
-# Don't use shared host config.cache, as it will confuse later
-# directories; GCC wants slightly different values for some
-# precious variables.  *sigh*
-
-# We must skip configuring if toplevel bootstrap is going.
-.PHONY: configure-gcc maybe-configure-gcc
-maybe-configure-gcc:
-@if gcc
-maybe-configure-gcc: configure-gcc
-configure-gcc:
-@endif gcc
 @if gcc-no-bootstrap
-       @test ! -f gcc/Makefile || exit 0; \
-       [ -d gcc ] || mkdir gcc; \
-       r=`${PWD_COMMAND}`; export r; \
-       s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
-       $(GCC_HOST_EXPORTS) \
-       echo Configuring in gcc; \
-       cd gcc || exit 1; \
-       case $(srcdir) in \
-         \.) \
-           srcdiroption="--srcdir=."; \
-           libsrcdir=".";; \
-         /* | [A-Za-z]:[\\/]*) \
-           srcdiroption="--srcdir=$(srcdir)/gcc"; \
-           libsrcdir="$$s/gcc";; \
-         *) \
-           srcdiroption="--srcdir=../$(srcdir)/gcc"; \
-           libsrcdir="$$s/gcc";; \
-       esac; \
-       $(SHELL) $${libsrcdir}/configure \
-         $(HOST_CONFIGARGS) $${srcdiroption} \
-         || exit 1
-@endif gcc-no-bootstrap
+# GCC has some more recursive targets, which trigger the old
+# (but still current, until the toplevel bootstrap project
+# is finished) compiler bootstrapping rules.
 
-# Don't 'make all' in gcc if it's already been made by 'bootstrap'; that
-# causes trouble.  This wart will be fixed eventually by moving
-# the bootstrap behavior to this file.
-.PHONY: all-gcc maybe-all-gcc
-maybe-all-gcc:
-@if gcc
-maybe-all-gcc: all-gcc
-all-gcc: configure-gcc
-@endif gcc
-@if gcc-no-bootstrap
-       r=`${PWD_COMMAND}`; export r; \
-       s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
-       $(SET_LIB_PATH) \
-       $(GCC_HOST_EXPORTS) \
-       if [ -f gcc/stage_last ] ; then \
-         (cd gcc && $(MAKE) $(GCC_FLAGS_TO_PASS) quickstrap); \
-       else \
-         (cd gcc && $(MAKE) $(GCC_FLAGS_TO_PASS) all); \
-       fi
-
-# Building GCC uses some tools for rebuilding "source" files
-# like texinfo, bison/byacc, etc.  So we must depend on those.
-#
-# While building GCC, it may be necessary to run various target
-# programs like the assembler, linker, etc.  So we depend on
-# those too.
-#
-# In theory, on an SMP all those dependencies can be resolved
-# in parallel.
-#
 GCC_STRAP_TARGETS = bootstrap bootstrap-lean bootstrap2 bootstrap2-lean bootstrap3 bootstrap3-lean bootstrap4 bootstrap4-lean bubblestrap quickstrap cleanstrap restrap
 .PHONY: $(GCC_STRAP_TARGETS)
-$(GCC_STRAP_TARGETS): all-bootstrap configure-gcc
+$(GCC_STRAP_TARGETS): all-prebootstrap configure-gcc
        @r=`${PWD_COMMAND}`; export r; \
        s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
        $(SET_LIB_PATH) \
-       $(GCC_HOST_EXPORTS) \
+       $(HOST_EXPORTS) \
        echo "Bootstrapping the compiler"; \
        cd gcc && $(MAKE) $(GCC_FLAGS_TO_PASS) $@
        @r=`${PWD_COMMAND}`; export r; \
@@ -1251,72 +1216,57 @@ $(GCC_STRAP_TARGETS): all-bootstrap configure-gcc
            compare=compare ;; \
        esac; \
        $(SET_LIB_PATH) \
-       $(GCC_HOST_EXPORTS) \
+       $(HOST_EXPORTS) \
        echo "$$msg"; \
        cd gcc && $(MAKE) $(GCC_FLAGS_TO_PASS) $$compare
        @r=`${PWD_COMMAND}`; export r; \
        s=`cd $(srcdir); ${PWD_COMMAND}` ; export s; \
        $(SET_LIB_PATH) \
        echo "Building runtime libraries"; \
-       $(MAKE) $(BASE_FLAGS_TO_PASS) $(RECURSE_FLAGS) all
+       $(MAKE) $(RECURSE_FLAGS_TO_PASS) all
 
-profiledbootstrap: all-bootstrap configure-gcc
+profiledbootstrap: all-prebootstrap configure-gcc
        @r=`${PWD_COMMAND}`; export r; \
        s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
        $(SET_LIB_PATH) \
-       $(GCC_HOST_EXPORTS) \
-       echo "Bootstrapping the compiler"; \
+       $(HOST_EXPORTS) \
+       echo "Bootstrapping training compiler"; \
        cd gcc && $(MAKE) $(GCC_FLAGS_TO_PASS) stageprofile_build
        @r=`${PWD_COMMAND}`; export r; \
-       s=`cd $(srcdir); ${PWD_COMMAND}` ; export s; \
-       $(SET_LIB_PATH) \
-       echo "Building runtime libraries and training compiler"; \
-       $(MAKE) $(BASE_FLAGS_TO_PASS) $(RECURSE_FLAGS) all
-       @r=`${PWD_COMMAND}`; export r; \
        s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
        $(SET_LIB_PATH) \
-       $(GCC_HOST_EXPORTS) \
+       $(HOST_EXPORTS) \
        echo "Building feedback based compiler"; \
        cd gcc && $(MAKE) $(GCC_FLAGS_TO_PASS) stagefeedback_build
+       @r=`${PWD_COMMAND}`; export r; \
+       s=`cd $(srcdir); ${PWD_COMMAND}` ; export s; \
+       $(SET_LIB_PATH) \
+       echo "Building runtime libraries"; \
+       $(MAKE) $(RECURSE_FLAGS_TO_PASS) all
 
 .PHONY: cross
-cross: all-texinfo all-bison all-byacc all-binutils all-gas all-ld
+cross: all-build all-gas all-ld
        @r=`${PWD_COMMAND}`; export r; \
        s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
        $(SET_LIB_PATH) \
-       $(GCC_HOST_EXPORTS) \
+       $(HOST_EXPORTS) \
        echo "Building the C and C++ compiler"; \
        cd gcc && $(MAKE) $(GCC_FLAGS_TO_PASS) LANGUAGES="c c++"
        @r=`${PWD_COMMAND}`; export r; \
        s=`cd $(srcdir); ${PWD_COMMAND}` ; export s; \
        $(SET_LIB_PATH) \
        echo "Building runtime libraries"; \
-       $(MAKE) $(BASE_FLAGS_TO_PASS) $(RECURSE_FLAGS) \
-               LANGUAGES="c c++" all
+       $(MAKE) $(RECURSE_FLAGS_TO_PASS) LANGUAGES="c c++" all
 @endif gcc-no-bootstrap
 
-.PHONY: check-gcc maybe-check-gcc
-maybe-check-gcc:
 @if gcc
-maybe-check-gcc: check-gcc
-check-gcc:
-       @if [ -f ./gcc/Makefile ] ; then \
-         r=`${PWD_COMMAND}`; export r; \
-         s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
-         $(SET_LIB_PATH) \
-         $(GCC_HOST_EXPORTS) \
-         (cd gcc && $(MAKE) $(GCC_FLAGS_TO_PASS) check); \
-       else \
-         true; \
-       fi
-
 .PHONY: check-gcc-c++
 check-gcc-c++:
        @if [ -f ./gcc/Makefile ] ; then \
          r=`${PWD_COMMAND}`; export r; \
          s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
          $(SET_LIB_PATH) \
-         $(GCC_HOST_EXPORTS) \
+         $(HOST_EXPORTS) \
          (cd gcc && $(MAKE) $(GCC_FLAGS_TO_PASS) check-c++); \
        else \
          true; \
@@ -1324,23 +1274,6 @@ check-gcc-c++:
 
 .PHONY: check-c++
 check-c++: check-target-libstdc++-v3 check-gcc-c++
-@endif gcc
-
-.PHONY: install-gcc maybe-install-gcc
-maybe-install-gcc:
-@if gcc
-maybe-install-gcc: install-gcc
-install-gcc:
-       @if [ -f ./gcc/Makefile ] ; then \
-         r=`${PWD_COMMAND}`; export r; \
-         s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
-         $(SET_LIB_PATH) \
-         $(GCC_HOST_EXPORTS) \
-         (cd gcc && $(MAKE) $(GCC_FLAGS_TO_PASS) install); \
-       else \
-         true; \
-       fi
-@endif gcc
 
 # Install the gcc headers files, but not the fixed include files,
 # which Cygnus is not allowed to distribute.  This rule is very
@@ -1357,49 +1290,34 @@ gcc-no-fixedincludes:
          r=`${PWD_COMMAND}`; export r; \
          s=`cd $(srcdir); ${PWD_COMMAND}` ; export s; \
          $(SET_LIB_PATH) \
-         $(GCC_HOST_EXPORTS) \
+         $(HOST_EXPORTS) \
          (cd ./gcc && \
           $(MAKE) $(GCC_FLAGS_TO_PASS) install); \
          rm -rf gcc/include; \
          mv gcc/tmp-include gcc/include 2>/dev/null; \
        else true; fi
-
-# Other targets (dvi, info, etc.)
-[+ FOR recursive_targets +]
-.PHONY: maybe-[+make_target+]-gcc [+make_target+]-gcc
-maybe-[+make_target+]-gcc:
-@if gcc
-maybe-[+make_target+]-gcc: [+make_target+]-gcc
-[+make_target+]-gcc: [+
-  FOR depend +]\
-    [+depend+]-gcc [+
-  ENDFOR depend +]
-       @[ -f ./gcc/Makefile ] || exit 0; \
-       r=`${PWD_COMMAND}`; export r; \
-       s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
-       $(SET_LIB_PATH) \
-       for flag in $(EXTRA_GCC_FLAGS); do \
-         eval `echo "$$flag" | sed -e "s|^\([^=]*\)=\(.*\)|\1='\2'; export \1|"`; \
-       done; \
-       $(GCC_HOST_EXPORTS) \
-       echo "Doing [+make_target+] in gcc" ; \
-       (cd gcc && \
-         $(MAKE) $(BASE_FLAGS_TO_PASS) "AR=$${AR}" "AS=$${AS}" \
-                 "CC=$${CC}" "CXX=$${CXX}" "LD=$${LD}" "NM=$${NM}" \
-                 "RANLIB=$${RANLIB}" \
-                 "DLLTOOL=$${DLLTOOL}" "WINDRES=$${WINDRES}" \
-                 [+make_target+]) \
-         || exit 1
 @endif gcc
 
-[+ ENDFOR recursive_targets +]
-
-@if gcc-bootstrap
 # ---------------------
 # GCC bootstrap support
 # ---------------------
 
-# We track the current stage (the one in 'gcc') in the stage_last file.
+# We track the current stage (the one in 'gcc') in the stage_current file.
+# stage_last instead tracks the stage that was built last.  These targets
+# are dummy when toplevel bootstrap is not active.
+
+.PHONY: unstage
+unstage:
+@if gcc-bootstrap
+       @[ -f stage_current ] || $(MAKE) `cat stage_last`-start
+@endif gcc-bootstrap
+
+.PHONY: stage
+stage:
+@if gcc-bootstrap
+       @$(MAKE) `cat stage_current`-end
+@endif gcc-bootstrap
+
 # We name the build directories for the various stages "stage1-gcc",
 # "stage2-gcc","stage3-gcc", etc.
 
@@ -1437,15 +1355,11 @@ STAGE1_LANGUAGES=@stage1_languages@
 # We only want to compare .o files, so set this!
 objext = .o
 
-# Real targets act phony if they depend on phony targets; this hack
-# prevents gratuitous rebuilding of stage 1.
-prebootstrap:
-       $(MAKE) $(BASE_FLAGS_TO_PASS) $(RECURSE_FLAGS) all-bootstrap
-       $(STAMP) prebootstrap
-
 # Flags to pass to stage2 and later makes.
 BOOT_CFLAGS= -g -O2
 POSTSTAGE1_FLAGS_TO_PASS = \
+       CC="$${CC}" CC_FOR_BUILD="$${CC_FOR_BUILD}" \
+       STAGE_PREFIX=$$r/stage[+prev+]-gcc/ \
        CFLAGS="$(BOOT_CFLAGS)" \
        ADAC="\$$(CC)"
 
@@ -1461,40 +1375,49 @@ POSTSTAGE1_FLAGS_TO_PASS = \
 [+ FOR bootstrap-stage +]
 .PHONY: stage[+id+]-start stage[+id+]-end
 
-stage[+id+]-start:
-       [ -f stage_last ] && $(MAKE) `cat stage_last`-end || :
-       echo stage[+id+] > stage_last ; \
-       [ -d stage[+id+]-gcc ] || mkdir stage[+id+]-gcc; \
-       set stage[+id+]-gcc gcc ; @CREATE_LINK_TO_DIR@ [+ IF prev +] ; \
-       set stage[+prev+]-gcc prev-gcc ; @CREATE_LINK_TO_DIR@ [+ ENDIF prev +]
-
-stage[+id+]-end:
-       rm -f stage_last ; \
-       set gcc stage[+id+]-gcc ; @UNDO_LINK_TO_DIR@ [+ IF prev +] ; \
-       set prev-gcc stage[+prev+]-gcc ; @UNDO_LINK_TO_DIR@ [+ ENDIF prev +]
+stage[+id+]-start::
+       [ -f stage_current ] && $(MAKE) `cat stage_current`-end || :
+       echo stage[+id+] > stage_current ; \
+       echo stage[+id+] > stage_last[+ FOR host_modules +][+ IF bootstrap +]
+@if [+ module +]
+       [ -d stage[+id+]-[+module+] ] || mkdir stage[+id+]-[+module+]; \
+       set stage[+id+]-[+module+] [+module+] ; @CREATE_LINK_TO_DIR@ [+ IF prev +] ; \
+       set stage[+prev+]-[+module+] prev-[+module+] ; @CREATE_LINK_TO_DIR@ [+ ENDIF prev +]
+@endif [+ module +][+ ENDIF bootstrap +][+ ENDFOR host_modules +]
+
+stage[+id+]-end::
+       rm -f stage_current[+ FOR host_modules +][+ IF bootstrap +]
+@if [+ module +]
+       set [+module+] stage[+id+]-[+module+] ; @UNDO_LINK_TO_DIR@ [+ IF prev +] ; \
+       set prev-[+module+] stage[+prev+]-[+module+] ; @UNDO_LINK_TO_DIR@ [+ ENDIF prev +]
+@endif [+ module +][+ ENDIF bootstrap +][+ ENDFOR host_modules +]
 
 # Bubble a bugfix through all the stages up to stage [+id+].  They
 # are remade, but not reconfigured.  The next stage (if any) will not
 # be reconfigured as well.
 .PHONY: stage[+id+]-bubble
-stage[+id+]-bubble: [+ IF prev +]stage[+prev+]-bubble[+ ENDIF +]
-       @if [ -f all-stage[+id+]-gcc ] ; then \
-         echo Remaking stage [+id+] ; \
-         rm -f all-stage[+id+]-gcc ; \
-         $(MAKE) $(BASE_FLAGS_TO_PASS) $(RECURSE_FLAGS) \
-           all-stage[+id+]-gcc [+ IF next +] && \
-         if [ -f configure-stage[+next+]-gcc ] ; then \
-           $(STAMP) configure-stage[+next+]-gcc ; \
-         fi [+ ENDIF next +]; \
-       else \
-         $(MAKE) $(BASE_FLAGS_TO_PASS) $(RECURSE_FLAGS) all-stage[+id+]-gcc ; \
-       fi
-
-configure-stage[+id+]-gcc: [+ IF prev +] all-stage[+prev+]-gcc [+
-         ELSE +] prebootstrap [+ ENDIF prev +]
+stage[+id+]-bubble:: [+ IF prev +]stage[+prev+]-bubble[+ ENDIF +]
+       @case `echo all-stage[+id+]-*` in \
+         'all-stage[+id+]-*') ;; \
+         *) echo Remaking stage [+id+] ; rm -f all-stage[+id+]-* ;; \
+       esac ; \
+       $(MAKE) $(RECURSE_FLAGS_TO_PASS) all-stage[+id+]
+
+.PHONY: all-stage[+id+]
+all-stage[+id+]: [+ FOR host_modules +][+ IF bootstrap +]\
+  maybe-all-stage[+id+]-[+module+][+
+ENDIF bootstrap+] [+ ENDFOR host_modules +]
+
+[+ FOR host_modules +][+ IF bootstrap +]
+maybe-configure-stage[+id+]-[+module+]:
+maybe-all-stage[+id+]-[+module+]:
+
+@if [+module+]-bootstrap
+maybe-configure-stage[+id+]-[+module+]: configure-stage[+id+]-[+module+]
+configure-stage[+id+]-[+module+]: [+ IF prev +] maybe-all-stage[+prev+]-[+module+] [+ ENDIF prev +]
        $(MAKE) stage[+id+]-start
-       @if [ -f stage[+id+]-gcc/Makefile ] ; then \
-         $(STAMP) configure-stage[+id+]-gcc ; \
+       @if [ -f stage[+id+]-[+module+]/Makefile ] ; then \
+         $(STAMP) configure-stage[+id+]-[+module+] ; \
          exit 0; \
        else \
          true ; \
@@ -1502,40 +1425,46 @@ configure-stage[+id+]-gcc: [+ IF prev +] all-stage[+prev+]-gcc [+
        r=`${PWD_COMMAND}`; export r; \
        s=`cd $(srcdir); ${PWD_COMMAND}`; export s; [+ IF prev +] \
        $(STAGE_HOST_EXPORTS) [+ ELSE prev +] \
-       $(GCC_HOST_EXPORTS) [+ ENDIF prev +] \
-       echo Configuring stage [+id+] in gcc ; \
-       cd gcc || exit 1; \
+       $(HOST_EXPORTS) [+ ENDIF prev +] \
+       echo Configuring stage [+id+] in [+module+] ; \
+       cd [+module+] || exit 1; \
        case $(srcdir) in \
          \.) \
            srcdiroption="--srcdir=."; \
            libsrcdir=".";; \
          /* | [A-Za-z]:[\\/]*) \
-           srcdiroption="--srcdir=$(srcdir)/gcc"; \
-           libsrcdir="$$s/gcc";; \
+           srcdiroption="--srcdir=$(srcdir)/[+module+]"; \
+           libsrcdir="$$s/[+module+]";; \
          *) \
-           srcdiroption="--srcdir=../$(srcdir)/gcc"; \
-           libsrcdir="$$s/gcc";; \
+           srcdiroption="--srcdir=../$(srcdir)/[+module+]"; \
+           libsrcdir="$$s/[+module+]";; \
        esac; \
        $(SHELL) $${libsrcdir}/configure \
          $(HOST_CONFIGARGS) $${srcdiroption} \
-         [+extra_configure_flags+] && \
-         $(STAMP) ../configure-stage[+id+]-gcc
+         [+stage_configure_flags+] [+extra_configure_flags+] && \
+         $(STAMP) ../configure-stage[+id+]-[+module+]
 
-all-stage[+id+]-gcc: configure-stage[+id+]-gcc
+maybe-all-stage[+id+]-[+module+]: all-stage[+id+]-[+module+]
+all-stage[+id+]-[+module+]: configure-stage[+id+]-[+module+]
        $(MAKE) stage[+id+]-start
        @r=`${PWD_COMMAND}`; export r; \
        s=`cd $(srcdir); ${PWD_COMMAND}`; export s; [+ IF prev +] \
        $(STAGE_HOST_EXPORTS) [+ ELSE prev +] \
-       $(GCC_HOST_EXPORTS) [+ ENDIF prev +] \
-       cd gcc && \
-       $(MAKE) $(GCC_FLAGS_TO_PASS) [+ IF prev +] \
-               CC="$${CC}" CC_FOR_BUILD="$${CC_FOR_BUILD}" \
-               STAGE_PREFIX=$$r/stage[+prev+]-gcc/ [+ ENDIF prev +] \
-               [+extra_make_flags+] && $(STAMP) ../all-stage[+id+]-gcc
-
+       $(HOST_EXPORTS) [+ ENDIF prev +] \
+       cd [+module+] && \
+       $(MAKE) $(FLAGS_TO_PASS) [+ IF prev +] \
+               $(POSTSTAGE1_FLAGS_TO_PASS) [+ ENDIF prev +] \
+               [+stage_make_flags+] [+extra_make_flags+] && \
+       $(STAMP) ../all-stage[+id+]-[+module+]
+@endif [+module+]-bootstrap
+[+ ENDIF bootstrap +][+ ENDFOR host_modules +]
+
+# FIXME: Will not need to be conditional when toplevel bootstrap is the
+# only possibility, but now it conflicts with no-bootstrap rules
+@if gcc-bootstrap
 [+ IF compare-target +]
 [+compare-target+]: all-stage[+id+]-gcc
-       [ -f stage_last ] && $(MAKE) `cat stage_last`-end || :
+       [ -f stage_current ] && $(MAKE) `cat stage_current`-end || :
        @r=`${PWD_COMMAND}`; export r; \
        s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
        rm -f .bad_compare ; \
@@ -1559,154 +1488,202 @@ all-stage[+id+]-gcc: configure-stage[+id+]-gcc
 
 [+ IF bootstrap-target +]
 .PHONY: [+bootstrap-target+]
-[+bootstrap-target+]:
-       $(MAKE) $(BASE_FLAGS_TO_PASS) $(RECURSE_FLAGS) stage[+id+]-bubble [+
+[+bootstrap-target+]: stage[+id+]-bubble [+
          IF compare-target +] [+compare-target+] [+
-         ENDIF compare-target +] \
-         stage[+id+]-start all stage[+id+]-end 
+         ENDIF compare-target +] all
 [+ ENDIF bootstrap-target +]
 
-.PHONY: restage[+id+] distclean-stage[+id+]
+.PHONY: restage[+id+] touch-stage[+id+] distclean-stage[+id+]
 
-distclean-stage[+id+]: [+ IF next +] distclean-stage[+next+] [+ ENDIF next +]
-       [ -f stage_last ] && $(MAKE) `cat stage_last`-end || :
-       rm -rf configure-stage[+id+]-gcc all-stage[+id+]-gcc stage[+id+]-gcc [+
+# Rules to wipe a stage and all the following ones, used for cleanstrap
+[+ IF prev +]distclean-stage[+prev+]:: distclean-stage[+id+] [+ ENDIF prev +]
+distclean-stage[+id+]::
+       [ -f stage_current ] && $(MAKE) `cat stage_current`-end || :
+       rm -rf configure-stage[+id+]-* all-stage[+id+]-* stage[+id+]-* [+
          IF compare-target +][+compare-target+] [+ ENDIF compare-target +]
 
-restage[+id+]: [+ IF next +] distclean-stage[+next+] [+ ENDIF next +]
-       rm -rf all-stage[+id+]-gcc [+
+# Rules to renew the timestamp on a stage and all the following ones
+[+ IF prev +]touch-stage[+prev+]:: touch-stage[+id+] [+ ENDIF prev +]
+touch-stage[+id+]::
+       @case `echo configure-stage[+id+]-*` in \
+         'configure-stage[+id+]-*') ;; \
+         *) \
+           echo '$(STAMP)' configure-stage[+id+]-* && \
+           $(STAMP) configure-stage[+id+]-* ;; \
+       esac ; \
+       case `echo all-stage[+id+]-*` in \
+         'all-stage[+id+]-*') ;; \
+         *) \
+           echo '$(STAMP)' all-stage[+id+]-* && \
+           $(STAMP) all-stage[+id+]-* ;; \
+       esac
+
+# After building a stage, touch the following ones
+[+ IF prev +]restage[+prev+]:: touch-stage[+id+] [+ ENDIF prev +]
+restage[+id+]::
+       rm -rf all-stage[+id+]-* [+
          IF compare-target +][+compare-target+] [+ ENDIF compare-target +]
-       $(MAKE) $(BASE_FLAGS_TO_PASS) $(RECURSE_FLAGS) [+
+       $(MAKE) $(RECURSE_FLAGS_TO_PASS) [+
          IF compare-target +][+compare-target+] [+
-         ELSE +] all-stage[+id+]-gcc [+ ENDIF compare-target +]
+         ELSE +] all-stage[+id+] [+ ENDIF compare-target +]
 
 [+ IF cleanstrap-target +]
 .PHONY: [+cleanstrap-target+]
 [+cleanstrap-target+]: distclean-stage1 [+bootstrap-target+]
 [+ ENDIF cleanstrap-target +]
+@endif gcc-bootstrap
 
 [+ ENDFOR bootstrap-stage +]
+
+stagefeedback-start::
+       @r=`${PWD_COMMAND}`; export r; \
+       s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+       cd stageprofile-gcc && \
+         { find . -type d | sort | sed 's,.*,$(SHELL) '"$$s"'/mkinstalldirs "../gcc/&",' | $(SHELL); } && \
+         { find . -name '*.*da' | sed 's,.*,$(LN) -f "&" "../gcc/&",' | $(SHELL); }
+
+# FIXME: Will not need to be conditional when toplevel bootstrap is the
+# only possibility, but now it conflicts with no-bootstrap rules
+@if gcc-bootstrap
+profiledbootstrap:
+       @r=`${PWD_COMMAND}`; export r; \
+       s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+       $(SET_LIB_PATH) \
+       $(HOST_EXPORTS) \
+       echo "Bootstrapping the compiler"; \
+       $(MAKE) stageprofile-bubble distclean-stagefeedback
+       @r=`${PWD_COMMAND}`; export r; \
+       s=`cd $(srcdir); ${PWD_COMMAND}` ; export s; \
+       $(SET_LIB_PATH) \
+       echo "Building runtime libraries and training compiler"; \
+       $(MAKE) $(BASE_FLAGS_TO_PASS) $(RECURSE_FLAGS) all
+       @r=`${PWD_COMMAND}`; export r; \
+       s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+       $(SET_LIB_PATH) \
+       $(HOST_EXPORTS) \
+       echo "Building feedback based compiler"; \
+       $(MAKE) stagefeedback-bubble stagefeedback-end
 @endif gcc-bootstrap
 
 # --------------------------------------
 # Dependencies between different modules
 # --------------------------------------
 
+# Generic dependencies for target modules on host stuff, especially gcc
+[+ FOR target_modules +]
+configure-target-[+module+]: maybe-all-gcc
+[+ ENDFOR target_modules +]
+
+[+ FOR lang_env_dependencies +]
+configure-target-[+module+]: maybe-all-target-newlib maybe-all-target-libgloss
+[+ IF cxx +]configure-target-[+module+]: maybe-all-target-libstdc++-v3
+[+ ENDIF cxx +][+ ENDFOR lang_env_dependencies +]
+
 # 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,
+# are made here to depend on a 'maybe-' target.  If you're not sure,
 # it's safer to use a soft dependency.
 
-# Host modules specific to gcc.
-# GCC needs to identify certain tools.
-# GCC also needs the information exported by the intl configure script.
-configure-gcc: maybe-configure-intl maybe-configure-binutils maybe-configure-gas maybe-configure-ld maybe-configure-bison maybe-configure-flex
-all-gcc: maybe-all-libiberty maybe-all-intl maybe-all-bison maybe-all-byacc maybe-all-binutils maybe-all-gas maybe-all-ld maybe-all-zlib maybe-all-libbanshee maybe-all-libcpp
-configure-libcpp: maybe-configure-libiberty maybe-configure-intl
-all-libcpp: maybe-all-libiberty maybe-all-intl
-# 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: [+ FOR host_modules +][+ IF bootstrap +]maybe-all-[+module+] [+ ENDIF bootstrap +][+ ENDFOR host_modules +]
-
-# Host modules specific to gdb.
-# GDB needs to know that the simulator is being built.
-configure-gdb: maybe-configure-itcl maybe-configure-tcl maybe-configure-tk maybe-configure-sim
+[+ ;; These Scheme functions build the bulk of the dependencies.
+   ;; dep-target builds a string like "maybe-all-MODULE_KIND-gcc",
+   ;; where "maybe-" is only included if HARD is true, and all-gcc
+   ;; is taken from VAR-NAME.
+   (define dep-target (lambda (module-kind var-name hard)
+      (string-append
+         (if hard "" "maybe-")
+         (dep-subtarget var-name)
+         module-kind
+         (dep-module var-name)
+      )))
+
+   ;; make-dep builds a dependency from the MODULE and ON AutoGen vars.
+   (define make-dep (lambda (module-kind on-kind)
+      (string-append
+         (dep-target module-kind "module" #t) ": "
+         (dep-target on-kind "on" (exist? "hard")))))
+
+   ;; dep-subtarget extracts everything up to the first dash in the given
+   ;; AutoGen variable, for example it extracts "all-" out of "all-gcc".
+   (define dep-subtarget (lambda (var-name)
+      (substring (get var-name) 0 (+ 1 (string-index (get var-name) #\-)))))
+
+   ;; dep-module extracts everything up to the first dash in the given
+   ;; AutoGen variable, for example it extracts "gcc" out of "all-gcc".
+   (define dep-module (lambda (var-name)
+      (substring (get var-name) (+ 1 (string-index (get var-name) #\-)))))
+
+   ;; dep-stage builds a string for the prefix of a bootstrap stage.
+   (define dep-stage (lambda ()
+      (string-append
+        "stage"
+        (get "id")
+        "-")))
+
+   ;; dep-maybe is the same as the AutoGen expression "- hard 'maybe-'"
+   ;; but is written in Scheme.
+   (define dep-maybe (lambda ()
+      (if (exist? "hard") "" "maybe-")))
+
+   ;; dep-kind returns "normal" is the dependency is on an "install" target,
+   ;; or if the LHS module is not bootstrapped.  It returns "bootstrap" for
+   ;; configure or build dependencies between bootstrapped modules; it returns
+   ;; "prebootstrap" for configure or build dependencies of bootstrapped
+   ;; modules on a build module (e.g. all-gcc on all-build-bison).  All this
+   ;; is only necessary for host modules.
+   (define dep-kind (lambda ()
+      (if (and (hash-ref boot-modules (dep-module "module"))
+              (=* (dep-module "on") "build-"))
+         "prebootstrap"
+
+         (if (or (= (dep-subtarget "on") "install-")
+                 (=* (dep-module "on") "target-")
+                 (not (hash-ref boot-modules (dep-module "module"))))
+              "normal"
+             "bootstrap"))))
+
+   ;; We now build the hash table that is used by dep-kind.
+   (define boot-modules (make-hash-table 113))
++]
+
+[+ FOR host_modules +][+
+   (if (exist? "bootstrap")
+       (hash-create-handle! boot-modules (get "module") #t))
+   "" +][+ ENDFOR host_modules +]
+
+# With all the machinery above in place, it is pretty easy to generate
+# dependencies.  Host dependencies are a bit more complex because we have
+# to check for bootstrap/prebootstrap dependencies.  To resolve
+# prebootstrap dependencies, prebootstrap modules are gathered in
+# a hash table.
+[+ FOR dependencies +][+ (make-dep "" "") +]
+[+ CASE (dep-kind) +]
+[+ == "prebootstrap"
+     +][+ FOR bootstrap_stage +]
+[+ (make-dep (dep-stage) "") +][+
+       ENDFOR bootstrap_stage +]
+all-prebootstrap: [+ (dep-target "" "on" (exist? "hard")) +]
+[+ == "bootstrap"
+     +][+ FOR bootstrap_stage +]
+[+ (make-dep (dep-stage) (dep-stage)) +][+
+       ENDFOR bootstrap_stage +]
+[+ ESAC +][+
+ENDFOR dependencies +]
+
+# Non-toplevel bootstrap rules must depend on several packages, to be built
+# before gcc.  Another wart that will go away, hopefully soon.
+@if gcc-no-bootstrap
+[+ FOR host_modules +][+
+   IF (and (not (= (get "module") "gcc"))
+          (hash-ref boot-modules (get "module"))) +]
+all-prebootstrap: maybe-all-[+module+][+
+   ENDIF +][+
+ENDFOR host_modules +]
+@endif gcc-no-bootstrap
+
 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
-configure-libgui: maybe-configure-tcl maybe-configure-tk
-all-libgui: maybe-all-tcl maybe-all-tk maybe-all-itcl
-
-# Host modules specific to binutils.
-configure-bfd: configure-libiberty
-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
-# 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
-# libopcodes depends on libbfd
-install-opcodes: maybe-install-bfd
-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
-configure-expect: maybe-configure-tcl maybe-configure-tk
-all-expect: maybe-all-tcl maybe-all-tk
-configure-itcl: maybe-configure-tcl maybe-configure-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-libiberty maybe-all-bfd maybe-all-opcodes 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 maybe-configure-gdb
-configure-tk: maybe-configure-tcl
-all-tk: maybe-all-tcl
-configure-tix: maybe-configure-tcl maybe-configure-tk
-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-gzip: maybe-all-libiberty
-all-hello: maybe-all-libiberty
-all-m4: maybe-all-libiberty maybe-all-texinfo
-all-make: maybe-all-libiberty maybe-all-intl
-all-patch: maybe-all-libiberty
-all-prms: maybe-all-libiberty
-all-recode: maybe-all-libiberty
-all-sed: maybe-all-libiberty
-all-send-pr: maybe-all-prms
-all-tar: maybe-all-libiberty
-all-uudecode: 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-libada: $(ALL_GCC_C)
-configure-target-libgfortran: $(ALL_GCC_C)
-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)
-
-# 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)
-configure-target-libtermcap: $(ALL_GCC_C)
-configure-target-newlib: $(ALL_GCC)
-configure-target-rda: $(ALL_GCC_C)
-configure-target-winsup: $(ALL_GCC_C)
-all-target-winsup: maybe-all-target-libiberty maybe-all-target-libtermcap
-
-# 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)
+all-gdb: $(gdbnlmrequirements) $(GDB_TK)
 
 # Serialization dependencies.  Host configures don't work well in parallel to
 # each other, due to contention over config.cache.  Target configures and