PR bootstrap/22340
* configure.in (default_target): Remove.
* Makefile.tpl (all): Do not use prerequisites as subroutines
(all) [gcc-bootstrap]: Bootstrap gcc first if it was not done yet.
(do-[+make_target+], check, install, [+bootstrap_target+]): Do not
use prerequisites as subroutines.
(check-host, check-target): New.
(bootstrap configure & all targets): Do not use stage*-start
if the directory layout is already ok.
(non-bootstrap configure & all targets): Prepend a $(unstage).
(stage[+id+]-bubble): Do that here. Do not use NOTPARALLEL.
(NOTPARALLEL): Remove.
(unstage, stage variables): New variables.
(unstage, stage targets): Simply expand to those variables.
* configure: Regenerate.
* Makefile.in: Regenerate.
* configure.in (powerpc-*-aix*): Add target-libssp to noconfigdirs.
(rs6000-*-aix*): Same.
* configure: Regenerate.
2005-09-14 Francois-Xavier Coudert <coudert@clipper.ens.fr>
* configure.in: Recognize f95 in the --enable-languages option,
and substitute it for fortran, issuing a warning.
* configure: Regenerate.
2005-08-12 Paolo Bonzini <bonzini@gnu.org>
* configure.in: Replace NCN_STRICT_CHECK_TOOL with
NCN_STRICT_CHECK_TOOLS, and likewise for NCN_STRICT_CHECK_TARGET_TOOLS.
Look for alternate names of the target cc and c++
config:
2005-08-12 Paolo Bonzini <bonzini@gnu.org>
* config/acx.m4 (NCN_CHECK_TARGET_TOOL, NCN_STRICT_CHECK_TOOL,
NCN_STRICT_CHECK_TARGET_TOOL): Remove.
(NCN_STRICT_CHECK_TOOLS, NCN_STRICT_CHECK_TARGET_TOOLS): New,
2005-07-14 Jim Blandy <jimb@redhat.com>
* configure.in: Add cases for Renesas m32c.
* configure: Regenerated.
bfd/ChangeLog:
2005-07-14 Jim Blandy <jimb@redhat.com>
Add support for m32c-*-elf (Renesas m32c and m16c).
* Makefile.am (ALL_MACHINES): Add cpu-m32c.lo.
(ALL_MACHINES_CFILES): Add cpu-m32c.c.
(BFD32_BACKENDS): Add elf32-m32c.lo.
(BFD32_BACKENDS_CFILES): Add elf32-m32c.c.
(cpu-m32c.lo, elf32-m32c.lo): New rules, generated by 'make dep-am'.
* Makefile.in: Regenerated.
* archures.c (bfd_arch_m32c, bfd_mach_m16c, bfd_mach_m32c): New
arch and mach codes.
(bfd_m32c_arch): New arch info object.
(bfd_archures_list): List bfd_m32c_arch.
* bfd-in2.h: Regenerated.
* config.bfd: Add case for the m32c.
* configure.in: Add case for the m32c.
* configure: Regenerated.
* cpu-m32c.c, elf32-m32c.c: New files.
* libbfd.h: Regenerated.
* targets.c (bfd_elf32_m32c_vec): Declare.
(_bfd_target_vector): List bfd_elf32_m32c_vec.
binutils/ChangeLog:
2005-07-14 Jim Blandy <jimb@redhat.com>
* readelf.c: #include "elf/m32c.h"
(guess_is_rela, dump_relocations, get_machine_name): Add cases for
EM_M32C.
* Makefile.am (readelf.o): Update dependencies.
* Makefile.in: Regenerated.
cpu/ChangeLog:
2005-07-14 Jim Blandy <jimb@redhat.com>
* m32c.cpu, m32c.opc: Machine description for the Renesas M32C.
gas/ChangeLog:
2005-07-14 Jim Blandy <jimb@redhat.com>
Add support for the Renesas M32C.
* Makefile.am (CPU_TYPES): List m32c.
(TARGET_CPU_CFILES): List config/tc-m32c.c.
(TARGET_CPU_HFILES): List config/tc-m32c.h.
* configure.in: Add case for m32c.
* configure.tgt: Add cases for m32c and m32c-*-elf.
* configure: Regenerated.
* config/tc-m32c.c, config/tc-m32c.h: New files.
* doc/Makefile.am (CPU_DOCS): Add c-m32c.texi.
* doc/Makefile.in: Regenerated.
* doc/all.texi: Set M32C.
* doc/as.texinfo: Add text for the M32C-specific options and line
comment characters, and refer to c-m32c.texi.
* doc/c-m32c.texi: New file.
include/ChangeLog:
2005-07-14 Jim Blandy <jimb@redhat.com>
* dis-asm.h (print_insn_m32c): New declaration.
include/elf/ChangeLog:
2005-07-14 Jim Blandy <jimb@redhat.com>
Add support for Renesas M32C and M16C.
* common.h (EM_M32C): New machine number.
* m32c.h: New file.
ld/ChangeLog:
2005-07-14 Jim Blandy <jimb@redhat.com>
Add support for the Renesas M32C and M16C.
* Makefile.am (ALL_EMULATIONS): Add eelf32m32c.o.
(eelf32m32c.c): New target.
* Makefile.in: Regenerated.
* configure.tgt: Add case for m32c-*-elf.
* emulparams/elf32m32c.sh: New file.
opcodes/ChangeLog:
2005-07-14 Jim Blandy <jimb@redhat.com>
Add support for the Renesas M32C and M16C.
* m32c-asm.c, m32c-desc.c, m32c-dis.c, m32c-ibld.c, m32c-opc.c: New.
* m32c-desc.h, m32c-opc.h: New.
* Makefile.am (HFILES): List m32c-desc.h and m32c-opc.h.
(CFILES): List m32c-asm.c, m32c-desc.c, m32c-dis.c, m32c-ibld.c,
m32c-opc.c.
(ALL_MACHINES): List m32c-asm.lo, m32c-desc.lo, m32c-dis.lo,
m32c-ibld.lo, m32c-opc.lo.
(CLEANFILES): List stamp-m32c.
(M32C_DEPS): List stamp-m32c, if CGEN_MAINT.
(CGEN_CPUS): Add m32c.
(m32c-asm.c, m32c-desc.c, m32c-dis.c, m32c-ibld.c, m32c-opc.c)
(m32c-desc.h, m32c-opc.h): Depend on M32C_DEPS.
(m32c_opc_h): New variable.
(stamp-m32c, m32c-asm.lo, m32c-desc.lo, m32c-dis.lo, m32c-ibld.lo)
(m32c-opc.lo): New rules.
* Makefile.in: Regenerated.
* configure.in: Add case for bfd_m32c_arch.
* configure: Regenerated.
* disassemble.c (ARCH_m32c): New.
[ARCH_m32c]: #include "m32c-desc.h".
(disassembler) [ARCH_m32c]: Add case for bfd_arch_m32c.
(disassemble_init_for_target) [ARCH_m32c]: Same.
* cgen-ops.h, cgen-types.h: New files.
* Makefile.am (HFILES): List them.
* Makefile.in: Regenerated.
<mmix-knuth-mmixware>: Set unsupported_languages. Name explicit
non-ported target libraries in noconfigdirs.
<cris-*, crisv32-*> Ditto, except for non-aout, non-elf,
non-linux-gnu. Remove libgcj_ex_libffi.
<lang_frag loop>: Set add_this_lang=no if the language is in
unsupported_languages.
* configure: Regenerate.
Sync from gcc:
2005-04-22 Bernd Schmidt <bernd.schmidt@analog.com>
* config.sub: Update from master copy.
2005-04-19 Hans-Peter Nilsson <hp@axis.com>
* configure.in <crisv32-*-*, cris-*-*>: New local variable
libgcj_ex_libffi. Have specific match for *-*-linux*. Separate
matches for "*-*-aout" and "*-*-elf". Don't disable libffi for
"*-*-elf" and "*-*-linux*".
* configure: Regenerate.
config:
2005-04-29 Paolo Bonzini <bonzini@gnu.org>
* acx.m4 (ACX_PROG_GNAT): Remove stray break.
* Makefile.def: Remove libstdcxx_incdir, libsubdir, gxx_include_dir,
gcc_version, and gcc_version_trigger from set of flags to pass.
* Makefile.tpl: Remove definitions of above variables.
(config.status): Remove dependency on $(gcc_version_trigger).
* Makefile.in: Regenerate.
* configure.in: Do not reference config/gcc-version.m4 nor
config/gxx-include-dir.m4. Do not invoke TL_AC_GCC_VERSION nor
TL_AC_GXX_INCLUDE_DIR. Do not set gcc_version_trigger.
* configure: Regenerate.
config:
* gxx-include-dir.m4: In all substitutions, leave $(gcc_version)
to be expanded by the Makefile.
Sync from gcc.
2005-02-28 Paolo Bonzini <bonzini@gnu.org>
PR bootstrap/17383
* Makefile.def (target_modules): Remove "stage", now unnecessary.
* Makefile.tpl (HOST_SUBDIR): New substitution.
(STAGE_HOST_EXPORTS, EXPECT, HOST_LIB_PATH, USUAL_AR_FOR_TARGET,
USUAL_AS_FOR_TARGET, USUAL_DLLTOOL_FOR_TARGET, USUAL_GCC_FOR_TARGET,
USUAL_LD_FOR_TARGET, USUAL_NM_FOR_TARGET, USUAL_OBJDUMP_FOR_TARGET,
USUAL_RANLIB_FOR_TARGET, USUAL_WINDRES_FOR_TARGET): Use it.
(Host modules, Bootstrapped modules): Use it.
(Build modules, Target modules): Do not create symlink trees,
always configure out-of-srcdir.
(distclean): Try removing $(host_subdir) with rm before using rm -rf.
* configure.in (FLAGS_FOR_TARGET, CC_FOR_TARGET, GCJ_FOR_TARGET,
GFORTRAN_FOR_TARGET, CXX_FOR_TARGET, RAW_CXX_FOR_TARGET): Use
$(HOST_SUBDIR). Create a symlink for host_subdir.
* Makefile.in: Regenerate.
* configure: Regenerate.
Merged from libada-gnattools-branch:
2004-11-28 Nathanael Nerode <neroden@gcc.gnu.org>
* Makefile.def: Add gnattools as a module, depending on target-libada.
* Makefile.in: Regenerate.
* configure.in: Include gnattools in host_tools; disable it if ada
is disabled.
* configure: Regenerate.
config:
2005-02-28 Paolo Bonzini <bonzini@gnu.org>
PR bootstrap/17383
* acx.m4 (GCC_TOPLEV_SUBDIRS): Set HOST_SUBDIR if an in-src
gcc build is going.
* configure.in: Remove all instances of build-fixincludes from
noconfigdirs.
(build_configargs): Supply --target to subdirectories.
* configure: Regenerate.
* Makefile.def: Make gcc install depend on fixincludes install.
* Makefile.in: Regenerate.
2004-09-23 Kelley Cook <kcook@gcc.gnu.org>
* config.guess: New upstream version
* compile, depcomp, install-sh, ylwrap: Likewise.
2004-09-19 Roger Sayle <roger@eyesopen.com>
* config/mh-x86omitfp: New host makefile fragment. Add
-fomit-frame-pointer to the default BOOT_CFLAGS.
* configure.in: Use it to speed up bootstrap on some IA-32 hosts.
* configure: Regenerate.
2004-09-15 Andrew Pinski <pinskia@physics.uc.edu>
PR target/11572
* configure.in (*-*-darwin*): Renable libobjc.
* configure: Regenerate.
* Makefile.def (bootstrap stages): Add 'lean' parameter.
* Makefile.tpl (configure-stageN-*, all-stageN-*): Turned into
phony targets; do not generate timestamp files.
(distclean-stageN): Remove references to their timestamp files.
(restageN, touch-stageN): Remove.
(stageN-bubble): Rewritten.
(compare): Support lean bootstraps.
* Makefile.in: Regenerate.
* configure.in: Only warn when bootstrapping but
build != host or build != target. Support lean bootstraps.
* configure: Regenerate.
Sync from gcc:
2004-08-26 Phil Edwards <phil@codesourcery.com>
* configure.in: Give a better error message if GMP/MPFR are missing
and a language needing them has been requested.
* configure: Regenerated.
2004-08-25 Phil Edwards <phil@codesourcery.com>
* configure.in: Print a list of available language front-ends if
a requested one is missing. Tidy stray tab characters.
* configure: Regenerated.
* Makefile.in: Regenerate.
* configure: Regenerate.
* Makefile.def (bootstrap-stage): Rename extra_*_flags to
stage_*_flags.
* Makefile.tpl (configure-[+module+], all-[+module+]): Exit
for bootstrapped modules if toplevel bootstrap is going.
(GCC bootstrap): Generate per-stage targets for all bootstrapped
modules. Adjust for changes in Makefile.def. Enable several
rules even in non-bootstrap mode, just to avoid peppering the
template with unnecessary "@if/@endif gcc-bootstrap" pairs.
(stage-[+prev+]-bubble): Remove.
* Makefile.def (Dependencies): Depend on all-build-bison,
all-build-flex, all-build-byacc, all-build-texinfo, rather
than the host variations.
* Makefile.tpl (BUILD_DIR_PREFIX): Remove. Replace throughout
with BUILD_SUBDIR.
(BISON): Update for recent Bisons.
(YACC): Fix typo.
(cross): Depend on all-build.
(all): Do not depend on all-build.
(prebootstrap): Remove.
(dep-kind): Accept separate prefixes for MODULE and ON variables.
(Prebootstrap dependencies): Add them to the per-stage targets
and to all-prebootstrap.
* configure.in (build_configdirs): Always enable build_tools.
(BUILD_DIR_PREFIX): Remove.
* Makefile.def (gcc): Add target variable.
(gdb, expect, guile, tk, tix): Replace with_x with extra_make_flags.
* Makefile.tpl (Autogenerated `all-*' targets): Invoke $(TARGET-*)
in the recursive `make', instead of hardwiring `all'.
(Autogenerated TARGET-* variables): New.
2004-08-09 Mark Mitchell <mark@codesourcery.com>
* configure.in (arm*-*-eabi*): New target.
* configure: Regenerate.
2004-08-03 Paul Brook <paul@codesourcery.com>
* configure.in: Check for MPFR as well as GMP.
* configure: Regenerate.
2004-08-01 Robert Millan <robertmh@gnu.org>
* configure.in: Turn mt-linux into mt-gnu. Use mt-gnu and enable
libmudflap for all GNU-based systems (with Glibc).
* configure: Regenerate.
config/ChangeLog:
2004-08-01 Robert Millan <robertmh@gnu.org>
* mt-linux: Rename to ...
* mt-gnu: ... this.
* configure.in: Add noconfigdirs for crx-*-*.
* configure: Regenerate.
2004-07-09 Loren J. Rittle <ljrittle@acm.org>
* configure.in: Build libmudflap by default on FreeBSD.
* configure: Regenerated.
2004-07-09 Mark Mitchell <mark@codesourcery.com>
* configure.in: Do not build libmudflap by default on non-GNU/Linux
systems.
* configure: Regenerated.
2004-07-08 John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
PR target/16344
* Makefile.tpl (profiledbootstrap): Build runtime libraries with
feedback based compiler.
* Makefile.in: Rebuilt.
2004-07-05 Phil Edwards <phil@codesourcery.com>
* configure.in: Do not prepend $srcdir to /dev/null in
makefile fragments.
* configure: Regenerate.
* Makefile.def (build_modules): Add bison, byacc, flex,
m4, texinfo.
(flags_to_pass): Add FLEX.
* Makefile.tpl (BUILD_DIR_PREFIX, BASE_EXPORTS): New.
(BUILD_EXPORTS, HOST_EXPORTS, BASE_TARGET_EXPORTS): Include it.
(DEFAULT_YACC, USUAL_YACC, DEFAULT_LEX, USUAL_LEX, DEFAULT_M4,
DEFAULT_MAKEINFO): Remove.
(CONFIGURED_YACC, CONFIGURED_FLEX, CONFIGURED_BISON,
CONFIGURED_LEX, CONFIGURED_M4, CONFIGURED_MAKEINFO): Substitute.
(YACC, FLEX, BISON, LEX, M4, MAKEINFO): Define to look into
objdir or else use configured tool.
(all-build): New.
(all): Depend on it.
(Build module dependencies): Add.
* Makefile.in: Regenerate.
* configure.in: Better support for multiple build modules,
matching what is done for host/target modules. Do not look
for "plausible" locations of build tools if Canadian cross.
Use autoconf's AC_PROG_CC to find a C compiler. Define
BUILD_DIR_PREFIX. Look for flex, makeinfo and m4.
* configure: Regenerate.
* Makefile.tpl (touch-stage[+id+]): New.
(restage[+prev+]): Depend on touch-stage[+id+].
* Makefile.tpl (RECURSE_FLAGS_TO_PASS): New.
Use it throughout.
* Makefile.def: Add profile and feedback bootstrap stages.
Remove next field from bootstrap stages.
* Makefile.tpl (LN, LN_S): Substitute.
(stageN-start, stageN-end): Use double-colon rules, to
provide a hook for additional setup commands.
(distclean-stageN-gcc, restageN): Create dependencies from
[+prev+], not from [+next+].
(stageN-bubble): Add commands for successive stages from
[+prev+], using double-colon rules.
(all-stageN-gcc): Fix typo.
(stagefeedback-start, profiledbootstrap): New.
* Makefile.in: Regenerate.
* configure.in: Call ACX_PROG_LN.
* configure: Regenerate.
config/ChangeLog:
2004-06-09 Paolo Bonzini <bonzini@gnu.org>
* acx.m4 (ACX_PROG_LN): From gcc, modified to
accept a parameter.
* Makefile.tpl (all.normal): Rename to all.
(all): Replace with a rule to pick the default
target from configure.
(all-gcc, configure-gcc): Use conditionals to
do nothing when toplevel bootstrap is going on.
(GCC directory bootstrap) [gcc-bootstrap]: Disable.
(Toplevel bootstrap) [gcc-no-bootstrap]: Disable.
* configure.in: Support --enable-bootstrap.
* Makefile.def: Remove new- prefix from toplevel
bootstrap targets.
* Makefile.tpl: Likewise.
* Makefile.def: Add bootstrap_stage 4. Add bootstrap2
target.
* Makefile.tpl (Toplevel bootstrap): Pass $(BASE_FLAGS_TO_PASS)
$(RECURSE_FLAGS) to recursive invocation of make.
* Makefile.in: Regenerate.
* configure: Regenerate.
* Makefile.tpl: Whenever a recursive target is defined, wrap
it in a special @if/@endif block, and prepare its maybe
dependency in the @if/@endif block
* configure.in: Instead of writing maybe dependencies, remove
the @if/@endif statements, and remove the @if/@endif blocks
that remain.
* configure: Regenerate.
* Makefile.in: Regenerate.
2004-04-27 Paolo Bonzini <bonzini@gnu.org>
Revert:
2004-04-26 Paolo Bonzini <bonzini@gnu.org>
* Makefile.def (flags_to_pass): Remove *dir variables that
are passed to the modules via TOPLEVEL_CONFIGURE_ARGUMENTS,
as well as prefix and exec_prefix.
* Makefile.in: Regenerate.
2004-04-26 Paolo Bonzini <bonzini@gnu.org>
* Makefile.def (host_modules): Mark with the bootstrap
flag packages on which gcc depends.
* Makefile.tpl (all-bootstrap): Use it.
* Makefile.in: Regenerate.
2004-04-26 Paolo Bonzini <bonzini@gnu.org>
* Makefile.def (flags_to_pass): Remove *dir variables that
are passed to the modules via TOPLEVEL_CONFIGURE_ARGUMENTS,
as well as prefix and exec_prefix.
* Makefile.in: Regenerate.
2004-04-26 Paolo Bonzini <bonzini@gnu.org>
* configure.in: Invoke ACX_PROG_CMP_IGNORE_INITIAL.
* configure: Regenerate.
* config/acx.m4: Mutuate ACX_PROG_CMP_IGNORE_INITIAL from gcc.
* gcc/Makefile.tpl (compare): Use the result of the test.
* gcc/Makefile.in: Regenerate.
2004-04-23 Paolo Bonzini <bonzini@gnu.org>
* Makefile.tpl (all-stage1-gcc, all-stage2-gcc, all-stage3-gcc):
Always relocate gcc and prev-gcc to the original names, even
if the build fails.
(new-cleanstrap, new-restage1, new-restage2, new-restage3):
New targets.
PR bootstrap/14871
* Makefile.tpl: If we don't have built-in-tree target tools,
use the ones found by configure rather than hacking around with
program_transform_name.
* configure.in: Give Makefile.tpl the information necessary
to do that.
* Makefile.in: Regenerate.
* configure: Regenerate.
2004-04-06 Nathanael Nerode <neroden@gcc.gnu.org>
PR bootstrap/14760
* configure.in: When computing baseargs, strip *all* copies of
offending options. Also, don't match/substitute the trailing space,
so that this actually works when two similar options are separated by
only one space.
* configure: Regenerate.
2004-04-06 David Edelsohn <edelsohn@gnu.org>
* configure.in (powerpc-*-aix*): Remove target-libada from noconfigdirs.
(rs6000-*-aix*): Same.
* configure: Regenerate.
to set @stage2_werror_flag@.
* configure: Regenerate.
* Makefile.tpl (top level bootstrap support): Pass
@stage2_werror_flag@ down to configure in stages 2 and 3.
* Makefile.in: Regenerate.
into their proper sections.
* Makefile.tpl (top level bootstrap support): Move disabling
of coverage flags from 'make' to 'configure'; improve comments.
* Makefile.in: Regenerate.
* Makefile.tpl (experimental top level bootstrap) Move stage1
language setting from all- target to configure- target; disable
intermodule optimization in stage 1; prevent gratuitous rebuilds
of stage 1.
* Makefile.in: Regenerate.
* configure.in: Comma-separate stage 1 language list for top
level bootstrap.
* configure: Regenerate.
* Makefile.tpl: Clean up experimental top level bootstrap support:
note known problems; set CONFIG_SHELL; don't set BUILD_CC; relocate
prev-gcc in configure- targets as well as all- targets.
* Makefile.in: Regenerate.
Paolo Bonzini <bonzini@gnu.org>
PR bootstrap/14522
* configure.in: Cope with shell that do not support nesting
quotes inside quoted backquote substitutions.
* configure: Regenerate.
2004-03-10 Andrew Pinski <pinskia@physics.uc.edu>
PR bootstrap/14522
* configure.in: Fix escaping of $.
* configure: Regenerate.
2004-03-11 Nathanael Nerode <neroden@gcc.gnu.org>
* configure: Regenerate.
2004-03-08 Paolo Bonzini <bonzini@gnu.org>
PR ada/14131
Move language detection to the top level.
* configure.in: Find default values for the tools as
soon as possible. Disable ada if GNAT is not found.
Emit error message about missing languages. Expand
--enable-languages=all for the gcc subdirectory.
(config)
2004-03-08 Paolo Bonzini <bonzini@gnu.org>
PR ada/14131
Move language detection to the top level.
* acx.m4 (ACX_PROG_GNAT): New macro, moved here
from the gcc subdirectory.
2004-03-09 Hans-Peter Nilsson <hp@axis.com>
* accross.m4 (AC_C_BIGENDIAN_CROSS): Compile endian probe with
"-c". Properly quote parameter for AC_MSG_ERROR.
(I don't know if it will fix either of them, but it relates
to them.)
* configure.in: Don't use shared config.cache for target
directories.
* configure: Regenerate.
2003-08-23 Phil Edwards <pme@gcc.gnu.org>
* configure.in: Use newline instead of semicolon when assuming
shell arguments in a for loop.
* configure: Regenerated.
2003-08-20 Geoffrey Keating <geoffk@apple.com>
PR 8180
* configure.in: When testing with_libs and with_headers, treat
'no' as unset. Based on a patch by Dan Kegel <dank@kegel.com>.
* configure: Regenerate.
Index: gcc/ChangeLog
2003-08-20 Geoffrey Keating <geoffk@apple.com>
PR 8180
* configure.in: When testing with_libs and with_headers, treat
'no' as unset. Based on a patch by Dan Kegel <dank@kegel.com>.
* configure: Regenerate.
* configure.in: Switch more things to use maybe dependencies.
* Makefile.tpl: Switch more things to use maybe dependencies.
Factor out common code from autogen IF statements.
* configure: Regenerate.
* Makefile.in: Regenerate.
* configure.in: Switch more things to use maybe dependencies.
Rearrange a little. Use GCC_TOPLEV_SUBDIRS.
* configure: Regenerate.
* Makefile.tpl: Switch more things to use maybe dependencies.
* Makefile.in: Regenerate.
<config>
* config/acx.m4: Introduce _GCC_TOPLEV_NONCANONICAL_BUILD,
_GCC_TOPLEV_NONCANOICAL_HOST, _GCC_TOPLEV_NONCANONICAL_TARGET,
GCC_TOPLEV_SUBDIRS.