This patch turns dependencies of non-bootstrap targets on bootstrap
targets for bootstrap builds into dependencies on stage_last. This
arrangement gets stage1-bubble to run from stage_last if we haven't
started a bootstrap yet, and to use the current stage otherwise. This
was already the case of target libs, just not of non-bootstrapped host
modules.
In order to retain preexisting dependencies in non-bootstrap builds,
or in gcc-less builds, this introduces support for @unless/@endunless
pairs in Makefile.in.
There is a remaining possibility of problem if activating, in a tree
configured for bootstrap, a parallel build of two or more modules, at
least one bootstrapped and one not. In this case, make might decide
to build stage_current and stage_last in parallel, the latter will
start a submake to build stage1 while the initial make, having
satisfied stage_current, proceeds to build the bootstrapped module in
non-bootstrapped configurations. The two builds will overlap and will
likely conflict. This situation does NOT arise in normal settings,
however: a post-bootstrap build of all-host all-target will indeed
activate such targets concurrently, but only after building all
bootstrapped modules successfully, and it will have both stage_last
and stage_current targets already satisfied, so the potential race
between builds will not arise.
Another remaining problem, that is slightly expanded with this patch,
is that of an interrupted build in a tree configured for bootstrap,
continued with a non-bootstrapped target. Target modules that were
not bootstrapped would already fail to complete the current stage when
activated explicitly in the command line for a retry; host modules,
however, would attempt to build their bootstrapped dependencies, which
is what led to the problem of concurrent builds addressed with this
patch. An interrupted or failed build might still recover correctly,
if the non-bootstrapped target is activated in both builds, because
then make will remove stage_last when its build command is
interrupted, so that it will attempt to recreate it with stage1-bubble
in the second try. A bootstrap build, however, will not be attempting
to build stage_last, so the file will remain and the retry won't go
through stage1-bubble. We have lived with that for target modules, so
we can probably live with that for host modules too.
Another undesirable consequence of this change is that non-boostrapped
host modules, in a tree configured for bootstrap, when activated as
make all-<module>, will build all of stage1 instead of only the
module's usual dependencies. This is intentional and necessary to fix
the parallel-build problem. If it's not desirable, disabling the
unnecessary bootstrap configuration will suffice to restore the
original set of dependencies.
for ChangeLog
* configure.ac: Introduce support for @unless/@endunless.
* Makefile.tpl (dep-kind): Rewrite with cond; return
postbootstrap in some cases.
(make-postboot-dep, postboot-targets): New.
(dependencies): Do not output postbootstrap dependencies at
first. Output non-target ones changed for configure to depend
on stage_last @if gcc-bootstrap, and the original deps @unless
gcc-bootstrap.
* configure.in, Makefile.in: Rebuilt.
* configure.ac: Update year in copyright notice.
Sync from FSF GCC mainline, bringing in the following patches.
* Makefile.def: Likewise.
* Makefile.tpl: Likewise.
* configure: Regenerate.
* Makefile.in: Regenerate.
2016-12-21 Jakub Jelinek <jakub@redhat.com>
* configure.ac: Don't bootstrap libmpx unless --with-build-config
includes bootstrap-mpx.
2016-12-01 Matthias Klose <doko@ubuntu.com>
* configure.ac: Don't use pkg-config to check for bdw-gc.
2016-11-30 Matthias Klose <doko@ubuntu.com>
* Makefile.def: Remove reference to boehm-gc target module.
* configure.ac: Include pkg.m4, check for --with-target-bdw-gc
options and for the bdw-gc pkg-config module.
2016-11-15 Matthias Klose <doko@ubuntu.com>
* config-ml.in: Remove references to GCJ.
* configure.ac: Likewise.
2016-09-30 Jakub Jelinek <jakub@redhat.com>
* configure.ac: Add target-libffi to target_libraries.
Readd libgcj target disablings, modified to only target-libffi.
Readd target addition of go to unsupported languages.
2016-09-30 Andrew Haley <aph@redhat.com>
* Makefile.def: Remove libjava.
* Makefile.tpl: Likewise.
* configure.ac: Likewise.
2016-09-26 Anton Kolesov <Anton.Kolesov@synopsys.com>
* configure.ac: Disable "sim" directory for arc*-*-*.
2016-09-12 Maciej W. Rozycki <macro@imgtec.com>
* configure.ac: Check for the minimum in-tree MPFR version
handled.
* Makefile.tpl (STAGE1_FLAGS_TO_PASS): New variable.
(all-[+prefix+][+module+]): Pass stage1_args to sub-makes.
(all-stage[+id+]-[+prefix+][+module+]): Likewise, if prev is false.
(clean-stage[+id+]-[+prefix+][+module+]): Likewise, if prev is false.
(host_modules): Set stage1_args to STAGE1_FLAGS_TO_PASS.
* Makefile.in: Regenerate.
* configure.ac (have_static_libs): New variable and associated check.
(stage1-ldflags): Move to after stage1_libs and set to -static-libstdc++
-static-libgcc if stage1_libs is empty and have_static_libs is yes.
* configure: Regenerate.
2012-08-14 Diego Novillo <dnovillo@google.com>
Merge from cxx-conversion branch.
* Makefile.tpl (STAGE[+id+]_CXXFLAGS): Remove
POSTSTAGE1_CONFIGURE_FLAGS.
* Makefile.in: Regenerate.
* configure.ac (ENABLE_BUILD_WITH_CXX): Remove. Update all users.
Force C++ when bootstrapping.
* configure: Regenerate.
2012-07-06 Richard Guenther <rguenther@suse.de>
* Makefile.def (cloog): Pass $(HOST_GMPINC) and $(HOST_ISLINC)
as CPPFLAGS, pass path to built gmp as LDFLAGS, always use
--with-gmp=system.
* Makefile.in: Regenerated.
* configure: Likewise.
2012-07-06 Richard Guenther <rguenther@suse.de>
* configure.ac (extra_isl_gmp_configure_flags): Initialize and subst.
* Makefile.def (isl): Use extra_isl_gmp_configure_flags and
supply V=1 as extra_make_flags.
* configure: Regenerated.
* Makefile.in: Likewise.
2012-07-03 Richard Guenther <rguenther@suse.de>
* Makfile.def (isl): Remove not necessary extra_exports and
extra_make_flags.
(cloog): Use $$CPPFLAGS instead of ${CPPFLAGS}.
* Makefile.in: Regenerated.
2012-07-03 Richard Guenther <rguenther@suse.de>
* Makefile.def (cloog): Add V=1 to extra_make_flags.
* configure.ac: If either the ISL or the CLooG check failed
do not try to build in-tree versions.
* Makefile.in: Regenerated.
* configure: Regenerated.
2012-07-02 Richard Guenther <rguenther@suse.de>
Michael Matz <matz@suse.de>
Tobias Grosser <tobias@grosser.es>
Sebastian Pop <sebpop@gmail.com>
* Makefile.def: Add ISL host module, remove PPL host module.
Adjust ClooG host module to use the proper ISL.
* Makefile.tpl: Pass ISL include flags instead of PPL ones.
* configure.ac: Include config/isl.m4. Add ISL host library,
remove PPL. Remove PPL configury, add ISL configury, adjust
ClooG configury.
* Makefile.in: Regenerated.
* configure: Likewise.
2012-07-02 Richard Guenther <rguenther@suse.de>
Merge from graphite branch
2011-07-21 Tobias Grosser <tobias@grosser.es>
* configure: Regenerated.
* config/cloog.m4: Remove support for CLooG-ppl and CLooG-parma,
both cloog.org and legacy versions. The only supported version will
be CLooG with the isl backend.
2011-07-21 Tobias Grosser <tobias@grosser.es>
* configure: Regenerated.
* configure.ac: Require cloog isl 0.17.0
2011-07-21 Tobias Grosser <tobias@grosser.es>
* configure: Regenerated.
* config/cloog.m4: Do not define CLOOG_ORG
2012-06-29 Steven Bosscher <steven@gcc.gnu.org>
* configure.ac: Skip C if explicitly selected.
* configure: Regenerate.
2012-06-28 Christophe Lyon <christophe.lyon@st.com>
* configure.ac (CFLAGS_FOR_TARGET, CXXFLAGS_FOR_TARGET): Make sure
they contain -O2.
* configure: Regenerate.
2012-06-20 Jason Merrill <jason@redhat.com>
* Makefile.tpl (check-target-libgomp-c++): New.
(check-target-libitm-c++): New.
* Makefile.def (c++): Add them.
* Makefile.in: Regenerate.
2012-05-16 Olivier Hainque <hainque@adacore.com>
* Makefile.tpl (gcc-no-fixedincludes): Rename into ...
(gcc-install-no-fixedincludes): Now forwarder to local target in gcc/
(install-no-fixedincludes): Adjust accordingly.
* Makefile.in: Regenerate.
2012-05-09 Nick Clifton <nickc@redhat.com>
Paul Smith <psmith@gnu.org>
PR bootstrap/50461
* configure.ac (mpfr-dir): When using in-tree MPFR sources
allow for the fact that from release v3.1.0 of MPFR the source
files were moved into a src sub-directory.
* configure: Regenerate.
2012-05-07 Janne Blomqvist <jb@gcc.gnu.org>
* configure.ac: Bump minimum MPFR version to 2.4.0.
* configure: Regenerated.
2012-05-01 Richard Henderson <rth@redhat.com>
* Makefile.def (libatomic): New target_module.
* configure.ac (target_libraries): Add libatomic.
(noconfigdirs): Check if libatomic is supported.
* Makefile.in, configure: Rebuild.
config/
2012-08-26 Art Haas <ahaas@impactweather.com>
* cloog.m4 (CLOOG_INIT_FLAGS): Use = instead of == in test.
2012-07-04 Tristan Gingold <gingold@adacore.com>
* isl.m4 (ISL_CHECK_VERSION): Set to yes if cross-compiling.
Fix comments.
2012-07-03 Richard Guenther <rguenther@suse.de>
* cloog.m4: Remove debugging print.
2012-07-03 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
* isl.m4 (ISL_CHECK_VERSION): Add -lisl to LIBS, not LDFLAGS.
2012-07-02 Richard Guenther <rguenther@suse.de>
* isl.m4 (_ISL_CHECK_CT_PROG): Omit main function header/footer.
Fix version test.
2012-07-02 Richard Guenther <rguenther@suse.de>
Michael Matz <matz@suse.de>
Tobias Grosser <tobias@grosser.es>
Sebastian Pop <sebpop@gmail.com>
* cloog.m4: Set up to work against ISL only.
* isl.m4: New file.
2011-07-26 Ian Lance Taylor <iant@google.com>
* configure.ac: Set have_compiler based on whether gcc directory
exists, rather than on whether gcc is in configdirs.
* configure: Rebuild.
2011-07-20 David Edelsohn <dje.gcc@gmail.com>
* Makefile.tpl (POSTSTAGE1_CONFIGURE_FLAGS): Add libsupc++ to
link directories.
* Makefile.in: Rebuild.
2011-07-20 Ian Lance Taylor <iant@google.com>
PR bootstrap/49787
* configure.ac: Move --enable-bootstrap handling earlier in file.
If --enable-bootstrap and either --enable-build-with-cxx or
--enable-build-poststage1-with-cxx, enable C++ automatically.
* configure: Rebuild.
2011-07-19 Ian Lance Taylor <iant@google.com>
* configure.ac: Add --enable-build-poststage1-with-cxx. If set,
make C++ a boot_language. Set and substitute
POSTSTAGE1_CONFIGURE_FLAGS.
* Makefile.tpl (POSTSTAGE1_CONFIGURE_FLAGS): New variable.
(STAGE[+id+]_CONFIGURE_FLAGS): Add $(POSTSTAGE1_CONFIGURE_FLAGS).
* configure, Makefile.in: Rebuild.
2011-07-16 Jason Merrill <jason@redhat.com>
* Makefile.def (language=c++): Add check-c++0x and
check-target-libmudflap-c++.
* Makefile.tpl (check-target-libmudflap-c++): New.
* Makefile.in: Regenerate.
2011-07-16 Matthias Klose <doko@ubuntu.com>
* Makefile.tpl (EXTRA_CONFIGARGS_LIBJAVA): Define.
* Makefile.def (target_modules/libjava): Pass
$(EXTRA_CONFIGARGS_LIBJAVA).
* configure.ac: Pass --disable-static in EXTRA_CONFIGARGS_LIBJAVA,
if not configured with --enable-static-libjava.
* Makefile.in: Regenerate.
* configure: Likewise.
2011-06-22 Hans-Peter Nilsson <hp@axis.com>
PR regression/47836
PR bootstrap/23656
PR other/47733
PR bootstrap/49247
PR c/48825
* configure.ac (target_libraries): Remove target-libiberty.
Remove case-statement setting skipdirs=target-libiberty for
multiple targets. Remove checking target_configdirs and
removing target-libiberty but keeping target-libgcc if
otherwise empty.
* Makefile.def (target_modules): Don't add libiberty.
(dependencies): Remove all traces of target-libiberty.
* configure, Makefile.in: Regenerate.
/:
Sync from GCC:
2011-02-12 Alexandre Oliva <aoliva@redhat.com>
PR lto/47225
* Makefile.def (lto-plugin): Double dash for enable-shared.
(configure-gcc): Depend on all-lto-plugin.
* Makefile.in: Rebuilt.
2011-02-11 Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
* configure.ac: Remove extra bracket.
* configure: Regenerate.
2011-02-06 Kai Tietz <kai.tietz@onevision.com>
PR lto/47225
* Makefile.def: Add dependency for install-gcc
on install-lto-plugin.
* Makfile.in: Regenerated
2011-01-25 Jakub Jelinek <jakub@redhat.com>
* configure.ac: If with_ppl is no, move setting with_cloog=no
after CLOOG_REQUESTED check.
* configure: Regenerated.
2011-01-25 Sebastian Pop <sebastian.pop@amd.com>
* configure.ac: Call AC_MSG_ERROR when PPL 0.11 is not present and
CLooG has been requested.
* configure: Regenerated.
2011-01-25 Sebastian Pop <sebastian.pop@amd.com>
* configure: Regenerated.
* configure.ac: Check for version 0.11 (or later revision) of PPL.
2011-01-25 Tobias Grosser <grosser@fim.uni-passau.de>
* configure: Regenerated.
* configure.ac: Use CLOOG_CHECK_VERSION(0,16,1).
2011-01-07 Jan Hubicka <jh@suse.cz>
PR lto/47225
* Makefile.in: Regenerate.
* Makefile.def (lto-plugin): Always pass enable-shared to the plugin
configure.
config/:
2011-01-25 Jakub Jelinek <jakub@redhat.com>
* cloog.m4 (CLOOG_REQUESTED): Use $2 if --without-cloog.
2011-01-10 Jan Hubicka <jh@suse.cz>
* bootstrap-lto.mk: -fuse-linker-plugin is default now;
pass -fno-lto to STAGEprofile.
/:
PR other/46202
* configure.ac: Fix just-built in-tree STRIP name to be
binutils/strip-new.
* configure: Regenerate.
* Makefile.def (install-strip-gcc, install-strip-binutils)
(install-strip-opcodes, install-strip-ld, install-strip-itcl)
(install-strip-sid): Mirror dependencies on non-strip variants
of these targets on the respective -strip prerequisites.
* Makefile.tpl (install-strip, install-strip-host)
(install-strip-target): New targets.
(install-strip-[+module+], install-strip-target-[+module+]):
New targets.
* Makefile.in: Regenerate.
etc/:
* Makefile.in (install-strip): New target.
libiberty/:
PR other/46202
* Makefile.in (install-strip): New phony target.
(install): Also mark as phony.
PR target/44862
* Makefile.tpl (POSTSTAGE1_CXX_EXPORT):
Provide -B option to allow for link spec %s substitutions for
libstdc++.a on darwin.
* Makefile.in: Regenerate.
* Makefile.tpl (local-distclean): Also remove config.cache files in
sub-directories as there may not be Makefiles present in the
sub-directories.
* Makefile.in: Regenerate.
* configure.ac: Revert previous delta.
* configure: Regenerate.
/:
PR bootstrap/41818
* Makefile.tpl (BASE_TARGET_EXPORTS): Only add TARGET_LIB_PATH
to $(RPATH_ENVVAR) if bootstrapping. Fix typo in comment.
* Makefile.in: Regenerate.
of ppl and cloog. Fix in-tree configury of libelf, skip tests.
Fix portability of test of C++ as bootstrap language. Add
ppl/src/ppl-config.o to the bootstrap compare exclusion list.
* configure: Rebuild.
* Makefile.def: Drop host and target settings from gmp, mpfr, ppl,
and cloog. Fix in-tree ppl configuration. Introduce libelf
in-tree building.
* Makefile.tpl (POSTSTAGE1_CXX_EXPORT): New.
(POSTSTAGE1_HOST_EXPORTS): Use it.
(STAGE[+id+]_CXXFLAGS): New.
(BASE_FLAGS_TO_PASS): Pass it down.
(configure-stage[+id+]-[+prefix+][+module+]): Use it. Add
extra_exports.
(all-stage[+id+]-[+prefix+][+module+]): Likewise.
(configure-[+prefix+][+module+], all-[+prefix+][+module+]): Add
extra_exports.
* Makefile.in: Rebuild.
* configure.ac (FLAGS_FOR_TARGET): Add -L and -isystem
paths for *-w64-mingw* and x86_64-*mingw*.
* configure: Regenerated.
* configure.ac: Disable target-winsup & co for
x86_64-*-mingw* and *-w64-mingw* targets.
* configure: Regenerated.
* configure.ac (CLooG test): Use = with test.
* configure: Regenerate.
* configure.ac: Do not set LIBS for ppl/cloog checks. Disable
cloog if the ppl version check failed. Move flags saving
before setting in libelf check.
* configure: Regenerate.
* configure.ac: Adjust the ppl and cloog configure to work as
documented. Disable cloog if ppl was disabled. Omit the version
checks if they were disabled.
* configure: Re-generate.
/:
2009-07-31 Christian Bruel <christian.bruel@st.com>
* configure.ac (sh*-*-elf): Don't add target-libgloss to noconfigdirs.
* configure: Regenerate.
2009-07-06 Ian Lance Taylor <iant@google.com>
* configure.ac: Add missing comma in AC_ARG_WITH(boot-libs).
* configure: Rebuild.
2009-06-26 Steve Ellcey <sje@cup.hp.com>
PR bootstrap/40338
* configure.ac (comparestring): Create new variable.
* Makefile.tpl (comparestring): Use to skip some comparisions.
* configure: Regenerate.
* Makefile.in: Regenerate.
2009-06-23 Ian Lance Taylor <iant@google.com>
* configure.ac: Add --enable-build-with-cxx. When set, add c++ to
boot_languages. Only bootstrap target libraries listed in
target_libs for some boot language. Add --with-stage1-ldflags,
--with-stage1-libs, --with-boot-ldflags, --with-boot-libs. Remove
with_host_libstdcxx from ppllibs. Only add -fkeep-inline-functions
if not building with C++.
* Makefile.def: For target_module libstdc++-v3, set bootstrap=true.
* Makefile.tpl (STAGE1_LDFLAGS, STAGE1_LIBS): New variables.
(POSTSTAGE1_LDFLAGS, POSTSTAGE1_LIBS): New variables.
(HOST_EXPORTS): Add STAGE1_LDFLAGS to LDFLAGS. Export HOST_LIBS.
(POSTSTAGE1_HOST_EXPORTS): Set CXX and CXX_FOR_BUILD. Add
POSTSTAGE1_LDFLAGS to LDFLAGS. Export HOST_LIBS.
(POSTSTAGE1_FLAGS_TO_PASS): Likewise.
* configure, Makefile.in: Rebuild.
2009-06-08 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* configure.ac: Detect MPC in default directory.
* configure: Regenerate.
2009-06-02 Richard Sandiford <r.sandiford@uk.ibm.com>
* configure.ac (powerpc-*-aix*, rs6000-*-aix*): Add target-newlib
to noconfdirs.
* configure: Regenerate.
2009-05-29 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* Makefile.def: Add MPC support and dependencies.
* configure.ac: Likewise. Reorganize GMP/MPFR checks.
* Makefile.in, configure: Regenerate.
2009-05-24 Nicolas Roche <roche@adacore.com>
* Makefile.tpl (compare-target): Skip ./ada/*tools directories.
* Makefile.in: Regenerate.
2009-05-21 Dave Korn <dave.korn.cygwin@gmail.com>
* configure.ac (cygwin noconfigdirs): Remove libgcj.
* configure: Regenerate.
2009-05-07 Dave Korn <dave.korn.cygwin@gmail.com>
* configure.ac ($with_ppl): Default to no if not supplied.
($with_cloog): Likewise.
configure: Regenerate.
2009-04-24 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
PR bootstrap/39739
* configure.ac (extra_mpfr_configure_flags): Set and AC_SUBST.
* Makefile.def (module=mpfr): Use extra_mpfr_configure_flags.
* configure, Makefile.in: Regenerate.
2009-04-14 Jakub Jelinek <jakub@redhat.com>
* configure.ac: Change copyright header to refer to version
3 of the GNU General Public License and to point readers at the
COPYING3 file and the FSF's license web page.
* Makefile.def: Likewise.
* Makefile.tpl: Likewise.
* Makefile.in: Regenerate.
2009-04-09 Jack Howarth <howarth@bromo.med.uc.edu>
* configure.ac: Restore match for darwin9 or later. Use double
brackets since regeneration eats one pair.
* configure: Regenerate.
PR target/37137
* Makefile.def (flags_to_pass): Remove redundant and incomplete
STAGE1_CFLAGS, STAGE2_CFLAGS, STAGE3_CFLAGS, and STAGE4_CFLAGS.
Add FLAGS_FOR_TARGET and BUILD_CONFIG.
(bootstrap_stage): Remove bootstrap-debug custom stages. Turn
stage_configureflags, stage_cflags and stage_libcflags into
explicit Makefile macros.
* Makefile.tpl (HOST_EXPORTS, EXTRA_HOST_FLAGS): Pass GCJ and
GFORTRAN.
(POSTSTAGE1_HOST_EXPORTS): Add XGCC_FLAGS_FOR_TARGET and TFLAGS to
CC. Set CC_FOR_BUILD from CC.
(BASE_TARGET_EXPORTS, RAW_CXX_TARGET_EXPORTS,
NORMAL_TARGET_EXPORTS): Move SYSROOT_CFLAGS_FOR_TARGET and
DEBUG_PREFIX_CFLAGS_FOR_TARGET from CFLAGS and CXXFLAGS to
XGCC_FLAGS_FOR_TARGET. Add it along with TFLAGS to CC, CXX, GCJ,
and GFORTRAN.
(TFLAGS, STAGE_CFLAGS, STAGE_TFLAGS, STAGE_CONFIGURE_FLAGS): New.
(_LIBCFLAGS): Renamed to _TFLAGS.
(do-compare-debug, do-compare3-debug): Drop.
(CC, GCC_FOR_TARGET, CXX_FOR_TARGET, RAW_CXX_FOR_TARGET,
GCJ_FOR_TARGET, GFORTRAN_FOR_TARGET): Remove FLAGS_FOR_TARGET.
(FLAGS_FOR_TARGET, SYSROOT_CFLAGS_FOR_TARGET,
DEBUG_PREFIX_CFLAGS_FOR_TARGET): Move down.
(XGCC_FLAGS_FOR_TARGET): New.
(BASE_FLAGS_TO_PASS): Pass STAGEid_CFLAGS, STAGEid_TFLAGS and TFLAGS.
(EXTRA_HOST_FLAGS): Pass GCJ and GFORTRAN.
(POSTSTAGE1_FLAGS_TO_PASS): Move SYSROOT_CFLAGS_FOR_TARGET and
DEBUG_PREFIX_CFLAGS_FOR_TARGET from CFLAGS, CXXFLAGS, LIBCFLAGS,
LIBCXXFLAGS to XGCC_FLAGS_FOR_TARGET. Add it along with TFLAGS
to CC, CXX, GCJ, and GFORTRAN. Pass XGCC_FLAGS_FOR_TARGET and
TFLAGS.
(BUILD_CONFIG): Include if requested.
(all): Set TFLAGS on bootstrap.
(configure-stageid-prefixmodule): Pass TFLAGS, adjust FLAGS.
(all-stageid-prefixmodule): Likewise.
(do-clean, distclean-stageid): Set TFLAGS.
(restrap): Fix whitespace.
* Makefile.in: Rebuilt.
config/ChangeLog:
* multi.m4: Save CXX, GFORTRAN and GCJ in config.status.
* mt-gnu (CXXFLAGS_FOR_TARGET): Adjust.
* bootstrap-O1.mk: New.
* bootstrap-O3.mk: New.
* bootstrap-debug.mk: New.
