# 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:
configure-gcc:
@test ! -f gcc/Makefile || exit 0; \
+ [ -f stage_last ] && exit 0; \
[ -d gcc ] || mkdir gcc; \
r=`${PWD_COMMAND}`; export r; \
s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
.PHONY: all-gcc maybe-all-gcc
maybe-all-gcc:
all-gcc: configure-gcc
- @if [ -f gcc/stage_last ] ; then \
- r=`${PWD_COMMAND}`; export r; \
- s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+ r=`${PWD_COMMAND}`; export r; \
+ s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+ if [ -f stage_last ] ; then \
+ true ; \
+ elif [ -f gcc/stage_last ] ; then \
$(SET_LIB_PATH) \
(cd gcc && $(MAKE) $(GCC_FLAGS_TO_PASS) quickstrap); \
else \
- r=`${PWD_COMMAND}`; export r; \
- s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
$(SET_LIB_PATH) \
(cd gcc && $(MAKE) $(GCC_FLAGS_TO_PASS) all); \
fi
mv gcc/tmp-include gcc/include 2>/dev/null; \
else true; fi
+# ---------------------
+# GCC bootstrap support
+# ---------------------
+
+# We name the directories for the various stages "stage1-gcc",
+# "stage2-gcc","stage3-gcc", etc.
+# Unfortunately, the 'compare' process will fail (on debugging information)
+# if any directory names are different!
+# So in the building rule for each stage, we relocate them before and after.
+# The current one is 'gcc', while the previous one is 'prev-gcc'. (The
+# current one must be 'gcc' for now because the scripts in that directory
+# assume it.)
+# At the end of the bootstrap, 'stage3-gcc' must be moved to 'gcc' so that
+# libraries can find it. Ick!
+
+# Bugs: This is almost certainly not parallel-make safe.
+
+# 'touch' doesn't work right on some platforms.
+STAMP = echo timestamp >
+
+# Only build the C compiler for stage1, because that is the only one that
+# we can guarantee will build with the native compiler, and also it is the
+# only thing useful for building stage2. STAGE1_CFLAGS (via CFLAGS),
+# MAKEINFO and MAKEINFOFLAGS are explicitly passed here to make them
+# overrideable (for a bootstrap build stage1 also builds gcc.info).
+
+STAGE1_CFLAGS=@stage1_cflags@
+STAGE1_LANGUAGES=@stage1_languages@
+
+configure-stage1-gcc:
+ echo configure-stage1-gcc > stage_last ; \
+ if [ -f stage1-gcc/Makefile ] ; then \
+ $(STAMP) configure-stage1-gcc ; \
+ exit 0; \
+ else \
+ true ; \
+ fi ; \
+ [ -d stage1-gcc ] || mkdir stage1-gcc; \
+ mv stage1-gcc gcc ; \
+ r=`${PWD_COMMAND}`; export r; \
+ s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+ CC="$(CC)"; export CC; \
+ CFLAGS="$(CFLAGS)"; export CFLAGS; \
+ CXX="$(CXX)"; export CXX; \
+ CXXFLAGS="$(CXXFLAGS)"; export CXXFLAGS; \
+ TOPLEVEL_CONFIGURE_ARGUMENTS="$(TOPLEVEL_CONFIGURE_ARGUMENTS)"; export TOPLEVEL_CONFIGURE_ARGUMENTS; \
+ AR="$(AR)"; export AR; \
+ AS="$(AS)"; export AS; \
+ CC_FOR_BUILD="$(CC_FOR_BUILD)"; export CC_FOR_BUILD; \
+ DLLTOOL="$(DLLTOOL)"; export DLLTOOL; \
+ LD="$(LD)"; export LD; \
+ NM="$(NM)"; export NM; \
+ RANLIB="$(RANLIB)"; export RANLIB; \
+ WINDRES="$(WINDRES)"; export WINDRES; \
+ OBJCOPY="$(OBJCOPY)"; export OBJCOPY; \
+ OBJDUMP="$(OBJDUMP)"; export OBJDUMP; \
+ echo Configuring stage 1 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} ; \
+ cd .. ; \
+ mv gcc stage1-gcc ; \
+ $(STAMP) configure-stage1-gcc
+
+all-stage1-gcc: configure-stage1-gcc all-bootstrap
+ echo all-stage1-gcc > stage_last ; \
+ r=`${PWD_COMMAND}`; export r; \
+ s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+ mv stage1-gcc gcc ; \
+ cd gcc && \
+ $(MAKE) $(GCC_FLAGS_TO_PASS) \
+ LANGUAGES="$(STAGE1_LANGUAGES)" \
+ CFLAGS="$(STAGE1_CFLAGS)" \
+ COVERAGE_FLAGS= || exit 1 ; \
+ cd .. ; \
+ mv gcc stage1-gcc ; \
+ $(STAMP) all-stage1-gcc
+
+configure-stage2-gcc: all-stage1-gcc
+ echo configure-stage2-gcc > stage_last ; \
+ if [ -f stage2-gcc/Makefile ] ; then \
+ $(STAMP) configure-stage2-gcc ; \
+ exit 0; \
+ else \
+ true ; \
+ fi ; \
+ [ -d stage2-gcc ] || mkdir stage2-gcc; \
+ mv stage2-gcc gcc ; \
+ r=`${PWD_COMMAND}`; export r; \
+ s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+ CC="$(CC)"; export CC; \
+ CFLAGS="$(CFLAGS)"; export CFLAGS; \
+ CXX="$(CXX)"; export CXX; \
+ CXXFLAGS="$(CXXFLAGS)"; export CXXFLAGS; \
+ TOPLEVEL_CONFIGURE_ARGUMENTS="$(TOPLEVEL_CONFIGURE_ARGUMENTS)"; export TOPLEVEL_CONFIGURE_ARGUMENTS; \
+ AR="$(AR)"; export AR; \
+ AS="$(AS)"; export AS; \
+ CC_FOR_BUILD="$(CC_FOR_BUILD)"; export CC_FOR_BUILD; \
+ DLLTOOL="$(DLLTOOL)"; export DLLTOOL; \
+ LD="$(LD)"; export LD; \
+ NM="$(NM)"; export NM; \
+ RANLIB="$(RANLIB)"; export RANLIB; \
+ WINDRES="$(WINDRES)"; export WINDRES; \
+ OBJCOPY="$(OBJCOPY)"; export OBJCOPY; \
+ OBJDUMP="$(OBJDUMP)"; export OBJDUMP; \
+ echo Configuring stage 2 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} ; \
+ cd .. ; \
+ mv gcc stage2-gcc ; \
+ $(STAMP) configure-stage2-gcc
+
+# Flags to pass to stage2 and later makes.
+BOOT_CFLAGS= -g -O2
+POSTSTAGE1_FLAGS_TO_PASS = \
+ CFLAGS="$(BOOT_CFLAGS)" \
+ ADAC="\$$(CC)" \
+ WARN_CFLAGS="\$$(GCC_WARN_CFLAGS)" \
+ STRICT_WARN="\$$(STRICT2_WARN)" \
+ OUTPUT_OPTION="-o \$$@"
+
+all-stage2-gcc: all-stage1-gcc configure-stage2-gcc
+ echo all-stage2-gcc > stage_last ; \
+ r=`${PWD_COMMAND}`; export r; \
+ s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+ mv stage2-gcc gcc ; \
+ mv stage1-gcc prev-gcc ; \
+ cd gcc && \
+ $(MAKE) $(GCC_FLAGS_TO_PASS) \
+ CC="$(STAGE_CC_WRAPPER) $$r/prev-gcc/xgcc$(exeext) -B$$r/prev-gcc/ -B$(build_tooldir)/bin/" \
+ BUILD_CC="$(STAGE_CC_WRAPPER) $$r/prev-gcc/xgcc$(exeext) -B$$r/prev-gcc/ -B$(build_tooldir)/bin/" \
+ CC_FOR_BUILD="$(STAGE_CC_WRAPPER) $$r/prev-gcc/xgcc$(exeext) -B$$r/prev-gcc/ -B$(build_tooldir)/bin/" \
+ STAGE_PREFIX=$$r/prev-gcc/ \
+ $(POSTSTAGE1_FLAGS_TO_PASS) || exit 1 ; \
+ cd .. ; \
+ mv prev-gcc stage1-gcc ; \
+ mv gcc stage2-gcc ; \
+ $(STAMP) all-stage2-gcc
+
+configure-stage3-gcc: all-stage2-gcc
+ echo configure-stage3-gcc > stage_last ; \
+ if [ -f stage3-gcc/Makefile ] ; then \
+ $(STAMP) configure-stage3-gcc ; \
+ exit 0; \
+ else \
+ true ; \
+ fi ; \
+ [ -d stage3-gcc ] || mkdir stage3-gcc; \
+ mv stage3-gcc gcc ; \
+ r=`${PWD_COMMAND}`; export r; \
+ s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+ CC="$(CC)"; export CC; \
+ CFLAGS="$(CFLAGS)"; export CFLAGS; \
+ CXX="$(CXX)"; export CXX; \
+ CXXFLAGS="$(CXXFLAGS)"; export CXXFLAGS; \
+ TOPLEVEL_CONFIGURE_ARGUMENTS="$(TOPLEVEL_CONFIGURE_ARGUMENTS)"; export TOPLEVEL_CONFIGURE_ARGUMENTS; \
+ AR="$(AR)"; export AR; \
+ AS="$(AS)"; export AS; \
+ CC_FOR_BUILD="$(CC_FOR_BUILD)"; export CC_FOR_BUILD; \
+ DLLTOOL="$(DLLTOOL)"; export DLLTOOL; \
+ LD="$(LD)"; export LD; \
+ NM="$(NM)"; export NM; \
+ RANLIB="$(RANLIB)"; export RANLIB; \
+ WINDRES="$(WINDRES)"; export WINDRES; \
+ OBJCOPY="$(OBJCOPY)"; export OBJCOPY; \
+ OBJDUMP="$(OBJDUMP)"; export OBJDUMP; \
+ echo Configuring stage 3 in gcc; \
+ cd gcc || exit 1; \
+ case $(srcdir) in \
+ \.) \
+ srcdiroption="--srcdir=."; \
+ libsrcdir=".";; \
+ /* | [A-Za-z]:[\\/]*) \
+ srcdiroption="--srcdir=$(srcdir)/gcc"; \
+ libsrcdir="$$s/gcc";; \
+ *) \
+ srcdiroption="--srcdir=../$(srcdir)/gcc"; \
+ libsrcdir="$$s/gcc";; \
+ esac; \
+ $(SHELL) $${libsrcdir}/configure \
+ $(HOST_CONFIGARGS) $${srcdiroption} ; \
+ cd .. ; \
+ mv gcc stage3-gcc ; \
+ $(STAMP) configure-stage3-gcc
+
+# Some files might not exist. This is disabled 'cause it don't work.
+# cp prev-gcc/objc/objc-parse.c gcc/objc/objc-parse.c || true ; \
+# cp prev-gcc/java/parse.c gcc/java/parse.c || true ; \
+# cp prev-gcc/java/parse-scan.c gcc/java/parse-scan.c || true ; \
+
+all-stage3-gcc: all-stage2-gcc configure-stage3-gcc
+ echo all-stage3-gcc > stage_last ; \
+ r=`${PWD_COMMAND}`; export r; \
+ s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+ mv stage2-gcc prev-gcc ; \
+ mv stage3-gcc gcc ; \
+ cd gcc && \
+ $(MAKE) $(GCC_FLAGS_TO_PASS) \
+ CC="$(STAGE_CC_WRAPPER) $$r/prev-gcc/xgcc$(exeext) -B$$r/prev-gcc/ -B$(build_tooldir)/bin/" \
+ BUILD_CC="$(STAGE_CC_WRAPPER) $$r/prev-gcc/xgcc$(exeext) -B$$r/prev-gcc/ -B$(build_tooldir)/bin/" \
+ CC_FOR_BUILD="$(STAGE_CC_WRAPPER) $$r/prev-gcc/xgcc$(exeext) -B$$r/prev-gcc/ -B$(build_tooldir)/bin/" \
+ STAGE_PREFIX=$$r/prev-gcc/ \
+ $(POSTSTAGE1_FLAGS_TO_PASS) || exit 1 ; \
+ cd .. ; \
+ mv prev-gcc stage2-gcc ; \
+ mv gcc stage3-gcc ; \
+ $(STAMP) all-stage3-gcc
+
+# We only want to compare .o files, so set this!
+objext = .o
+
+compare: all-stage3-gcc
+ r=`${PWD_COMMAND}`; export r; \
+ s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
+ rm -f .bad_compare ; \
+ cd stage3-gcc; \
+ files=`find . -name "*$(objext)" -print` ; \
+ cd .. ; \
+ for file in $${files} ; do \
+ cmp --ignore-initial=16 $$r/stage2-gcc/$$file $$r/stage3-gcc/$$file \
+ > /dev/null 2>&1; \
+ test $$? -eq 1 && echo $$file differs >> .bad_compare || true; \
+ done ; \
+ if [ -f .bad_compare ]; then \
+ echo "Bootstrap comparison failure!"; \
+ cat .bad_compare; \
+ exit 1; \
+ else \
+ true; \
+ fi ; \
+ $(STAMP) compare
+
+.PHONY: new-bootstrap
+# This target exists so that everything can be made in one pass.
+# 'all-gcc' has to avoid stomping on the bootstrap-generated gcc for
+# this to work.
+new-bootstrap: compare
+ mv stage3-gcc gcc ; \
+ $(MAKE) all ; \
+ mv gcc stage3-gcc
+
# --------------------------------------
# Dependencies between different modules
# --------------------------------------
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