mknative-gcc revision 1.122 
1#!/bin/sh
2#	$NetBSD: mknative-gcc,v 1.122 2025/10/29 05:35:15 mrg Exp $
3#
4# Shell script for generating all the constants needed for a native
5# platform build of gcc.
6#
7# This version is for GCC 14.3
8
9# initialise
10
11_TMPDIR=$2
12_TOP=$3
13_SRC=$4
14_PLATFORM=$5
15_MACHINE_ARCH=$6
16_DESTDIR=$7
17_TOOLDIR=$8
18_VPATH=`grep VPATH ${_TMPDIR}/Makefile | sed 's,^.*=[ 	]*,,'`
19_GNU_DIST=`cd ${_VPATH}; pwd`
20
21if [ -z "$_DESTDIR" ]; then
22	echo "\$_DESTDIR is empty" 2>&1
23	exit 1
24fi
25
26. $_TOP/tools/gcc/mknative.common
27
28case $0 in
29	*mknative-gcc.old)
30		_OUTDIRBASE="external/gpl3/gcc.old"
31		;;
32	*)
33		_OUTDIRBASE="external/gpl3/gcc"
34		;;
35esac
36_OUTDIR="$_TOP/$_OUTDIRBASE"
37
38sanitise_includes () {
39	sed \
40		-e "s,-I$_DESTDIR/usr/include,,g" \
41		-e "s,-I$_SRC/external/lgpl3/mpfr/dist/src,,g" \
42		-e "s,-I$_SRC/external/lgpl3/mpc/dist/src,,g" \
43		-e "s,-I$_SRC/external/lgpl3/gmp/lib/libgmp/arch/[a-z_0-9-]*,,g" \
44		-e "s,-I$_TOOLDIR/include,,g" \
45		-e "s,-I/usr/include/[^ 	]*,,"
46}
47
48##### lib/libg2c #####
49
50get_libg2c () {
51	mkdir -p $_OUTDIR/lib/libg2c3/arch/$_MACHINE_ARCH
52
53	write_c $_OUTDIRBASE/lib/libg2c3/arch/$_MACHINE_ARCH/config.h <$_TMPDIR/$_PLATFORM/libf2c/libU77/config.h
54	write_c $_OUTDIRBASE/lib/libg2c3/arch/$_MACHINE_ARCH/g2c.h <$_TMPDIR/$_PLATFORM/libf2c/g2c.h
55
56	{
57		getvars $_PLATFORM/libf2c/Makefile \
58			F2CEXT
59		getvars $_PLATFORM/libf2c/libF77/Makefile \
60			ALL_CFLAGS OBJS
61		getvars $_PLATFORM/libf2c/libI77/Makefile \
62			ALL_CFLAGS OBJS | sed 's,=,+=,'
63		getvars $_PLATFORM/libf2c/libU77/Makefile \
64			ALL_CFLAGS OBJS | sed 's,=,+=,'
65	} | write_mk $_OUTDIRBASE/lib/libg2c3/arch/$_MACHINE_ARCH/defs.mk
66}
67
68##### lib/libgcc #####
69
70get_libgcc () {
71	_subdir="$1"
72	mkdir -p $_OUTDIR/lib/lib$_subdir/arch
73
74	# DPBIT, FPBIT only used on mn10[23]00, we don't need them.
75	# XXX we should probably grab everything Just In Case for
76	# the future.
77
78	mkdir -p $_OUTDIR/lib/lib$_subdir/arch/$_MACHINE_ARCH
79	cd $_TMPDIR/$_PLATFORM/libgcc
80	{
81		getvars $_PLATFORM/libgcc/Makefile \
82			INCLUDES \
83			INTERNAL_CFLAGS \
84			LIB2ADD LIB2ADDEH LIB2ADD_ST \
85			LIB1ASMFUNCS LIB1ASMSRC \
86			LIB2_DIVMOD_FUNCS LIB2FUNCS_ST \
87			LIB2FUNCS_EXTRA \
88			LIBGCC2_CFLAGS \
89			SHLIB_MKMAP SHLIB_MKMAP_OPTS \
90			SHLIB_MAPFILES SHLIB_NM_FLAGS
91		getvars gcc/Makefile \
92			NOEXCEPTION_FLAGS EXTRA_HEADERS
93	}	| sanitise_includes \
94		| write_mk $_OUTDIRBASE/lib/lib$_subdir/arch/$_MACHINE_ARCH/defs.mk
95
96	cd $_TMPDIR/$_PLATFORM/libgcc
97	{
98		getvars $_PLATFORM/libgcc/Makefile \
99			enable_execute_stack \
100			unwind_header md_unwind_header \
101			sfp_machine_header thread_header
102	}	| sanitise_includes \
103		| write_mk $_OUTDIRBASE/lib/lib$_subdir/arch/$_MACHINE_ARCH/gthr-defs.mk
104
105	if [ "${_MACHINE_ARCH}" = "m68000" ]
106	then
107		ex <<__EOF__ $_OUTDIR/lib/lib$_subdir/arch/$_MACHINE_ARCH/defs.mk
108/G_LIBGCC2_CFLAGS/ s/-fPIC//
109wq
110__EOF__
111	fi
112
113	for f in auto-target.h; do
114		write_c $_OUTDIRBASE/lib/lib$_subdir/arch/$_MACHINE_ARCH/$f \
115		    <$_TMPDIR/$_PLATFORM/libgcc/$f
116	done
117}
118
119##### lib/libgcov #####
120
121get_libgcov () {
122	_subdir="$1"
123	_mf="$2"
124
125	mkdir -p $_OUTDIR/lib/lib$_subdir/libgcov/arch/$_MACHINE_ARCH
126
127	{
128		getvars $_mf \
129			LIBGCOV_MERGE \
130			LIBGCOV_PROFILER \
131			LIBGCOV_INTERFACE \
132			LIBGCOV_DRIVER
133	} | write_mk $_OUTDIRBASE/lib/lib$_subdir/libgcov/arch/$_MACHINE_ARCH/defs.mk
134
135}
136
137##### lib/libiberty #####
138
139get_gcc_libiberty () {
140	_subdir="$1"
141	_libibertydir="lib/libiberty"
142	mkdir -p $_OUTDIR/$_libibertydir/arch/$_MACHINE_ARCH
143
144	getvars libiberty/Makefile \
145		ALLOCA EXTRA_OFILES LIBOBJS REQUIRED_OFILES \
146		| write_mk $_OUTDIRBASE/$_libibertydir/defs.mk
147
148	write_c $_OUTDIRBASE/$_libibertydir/arch/$_MACHINE_ARCH/config.h \
149		<$_TMPDIR/libiberty/config.h
150}
151
152##### lib/libdecnumber #####
153
154get_libdecnumber () {
155	_subdir="$1"
156
157	mkdir -p $_OUTDIR/usr.bin/$_subdir/arch/$_MACHINE_ARCH
158	write_c $_OUTDIRBASE/usr.bin/$_subdir/arch/$_MACHINE_ARCH/config.h \
159		<$_TMPDIR/libdecnumber/config.h
160}
161
162##### lib/libgomp #####
163
164get_libgomp () {
165	_subdir="$1"
166
167	mkdir -p $_OUTDIR/lib/$_subdir/arch/$_MACHINE_ARCH
168
169	getvars $_PLATFORM/libgomp/Makefile \
170		libgomp_la_SOURCES \
171		| write_mk $_OUTDIRBASE/lib/$_subdir/defs.mk
172
173	write_c $_OUTDIRBASE/lib/$_subdir/arch/$_MACHINE_ARCH/config.h \
174		<$_TMPDIR/$_PLATFORM/libgomp/config.h
175	write_c $_OUTDIRBASE/lib/$_subdir/arch/$_MACHINE_ARCH/libgomp_f.h \
176		<$_TMPDIR/$_PLATFORM/libgomp/libgomp_f.h
177	write_mk $_OUTDIRBASE/lib/$_subdir/arch/$_MACHINE_ARCH/libgomp.spec \
178		<$_TMPDIR/$_PLATFORM/libgomp/libgomp.spec
179	write_c $_OUTDIRBASE/lib/$_subdir/arch/$_MACHINE_ARCH/omp.h \
180		<$_TMPDIR/$_PLATFORM/libgomp/omp.h
181}
182
183##### lib/libbacktrace #####
184
185get_libbacktrace () {
186	_subdir="$1"
187
188	mkdir -p $_OUTDIR/lib/$_subdir/arch/$_MACHINE_ARCH
189	write_c $_OUTDIRBASE/lib/$_subdir/arch/$_MACHINE_ARCH/config.h \
190		<$_TMPDIR/$_PLATFORM/$_subdir/config.h
191	write_c $_OUTDIRBASE/lib/$_subdir/arch/$_MACHINE_ARCH/backtrace-supported.h \
192		<$_TMPDIR/$_PLATFORM/$_subdir/backtrace-supported.h
193}
194
195##### lib/libobjc #####
196
197get_libobjc () {
198	_subdir="$1/arch/$_MACHINE_ARCH"
199	_options="ALL_OPT_FILES ALL_OPT_URL_FILES"
200
201	mkdir -p $_OUTDIR/lib/$_subdir
202
203	{
204		if [ -n "$_options" ]; then
205			getvars gcc/Makefile $_options
206		fi
207		getvars $_PLATFORM/libobjc/Makefile \
208			ALL_CFLAGS INCLUDES OBJC_SOURCE_FILES C_SOURCE_FILES OBJC_H \
209			| sed "s,$_GNU_DIST,\${GNUHOSTDIST},g"
210	} | sanitise_includes \
211	  | write_mk $_OUTDIRBASE/lib/$_subdir/defs.mk
212
213	write_c $_OUTDIRBASE/lib/$_subdir/config.h \
214		<$_TMPDIR/$_PLATFORM/libobjc/config.h
215}
216
217##### lib/libstdc++-v3 #####
218
219get_libstdcxx_v3 () {
220	_subdir="$1"
221	_ver="$2"
222
223	mkdir -p $_OUTDIR/lib/$_subdir/arch/$_MACHINE_ARCH
224
225	_build_headers="c++config.h"
226	_headers1="backward_headers c_base_headers_extra"
227	_headers1="$_headers1 c_base_headers_extra_install"
228	_headers1="$_headers1 tr1_headers tr2_headers"
229	_headers1="$_headers1 decimal_headers c_compatibility_headers_install"
230	_headers1="$_headers1 debug_headers parallel_headers"
231	_headers1="$_headers1 pb_headers1 pb_headers2 pb_headers3 pb_headers4"
232	_headers1="$_headers1 pb_headers5 pb_headers6 pb_headers7"
233	_headers1="$_headers1 bits_headers ext_headers host_headers"
234	_headers1="$_headers1 pstl_headers"
235	_headers1="$_headers1 profile_headers profile_impl_headers"
236	_headers1="$_headers1 experimental_headers experimental_bits_headers"
237	_headers1="$_headers1 ext_host_headers"
238
239	# build files
240	for h in $_build_headers; do
241		write_c $_OUTDIRBASE/lib/$_subdir/arch/$_MACHINE_ARCH/$h \
242			<$_TMPDIR/$_PLATFORM/libstdc++-v3/include/$_PLATFORM/bits/$h
243	done
244
245	write_c $_OUTDIRBASE/lib/$_subdir/arch/$_MACHINE_ARCH/symver-config.h \
246		<$_TMPDIR/$_PLATFORM/libstdc++-v3/config.h
247
248	{
249		getvars $_PLATFORM/libstdc++-v3/Makefile \
250			port_specific_symbol_files
251		getvars $_PLATFORM/libstdc++-v3/src/Makefile \
252			cxx11_sources \
253			cxx17_sources \
254			cxx20_sources \
255			cxx23_sources \
256			cxx26_sources \
257			cxx98_sources
258
259		# libsupc++
260		getvars $_PLATFORM/libstdc++-v3/libsupc++/Makefile \
261			sources | sed 's/^G_sources=/G_LIBSUPCXX_SOURCES=/'
262		getvars $_PLATFORM/libstdc++-v3/libsupc++/Makefile \
263			c_sources | sed 's/^G_c_sources=/G_LIBSUPCXX_C_SOURCES=/'
264
265		# includes
266		getvars $_PLATFORM/libstdc++-v3/include/Makefile \
267			c_base_headers std_headers | sed -e 's#/[^ 	][^ 	]*/##g' -e 's/\${GNUHOSTDIST}//g'
268
269		# src
270		getvars $_PLATFORM/libstdc++-v3/src/Makefile \
271			libstdc___la_SOURCES | sed 's/^G_libstdc___la_SOURCES=/G_SRC_SOURCES=/'
272		getvars $_PLATFORM/libstdc++-v3/src/libbacktrace/Makefile \
273			libstdc___libbacktrace_la_OBJECTS libstdc___libbacktrace_la_DEPENDENCIES | \
274			sed -e 's/^G_libstdc___libbacktrace_la_OBJECTS=/G_LIBBACKTRACE_SOURCES=/' \
275			    -e 's/^G_libstdc___libbacktrace_la_DEPENDENCIES=/G_LIBBACKTRACE_DEPS=/' \
276			    -e 's/std_stacktrace-//g' -e 's/\.lo/.c/g'
277		getvars $_PLATFORM/libstdc++-v3/src/c++17/Makefile \
278			libc__17convenience_la_SOURCES | \
279			sed -e 's/^G_libc__17convenience_la_SOURCES=/G_CPP17_SOURCES=/'
280		getvars $_PLATFORM/libstdc++-v3/src/c++20/Makefile \
281			libc__20convenience_la_SOURCES | \
282			sed -e 's/^G_libc__20convenience_la_SOURCES=/G_CPP20_SOURCES=/'
283		getvars $_PLATFORM/libstdc++-v3/src/c++23/Makefile \
284			libc__23convenience_la_SOURCES | \
285			sed -e 's/^G_libc__23convenience_la_SOURCES=/G_CPP23_SOURCES=/'
286		getvars $_PLATFORM/libstdc++-v3/src/c++26/Makefile \
287			libc__26convenience_la_SOURCES | \
288			sed -e 's/^G_libc__26convenience_la_SOURCES=/G_CPP26_SOURCES=/'
289		getvars $_PLATFORM/libstdc++-v3/src/c++11/Makefile \
290			libc__11convenience_la_SOURCES | \
291			sed -e 's/^G_libc__11convenience_la_SOURCES=/G_CPP11_SOURCES=/'
292		getvars $_PLATFORM/libstdc++-v3/src/c++98/Makefile \
293			GLIBCXX_ABI_FLAGS libc__98convenience_la_SOURCES | \
294			sed -e 's/^G_libc__98convenience_la_SOURCES=/G_CPP98_SOURCES=/'
295		getvars $_PLATFORM/libstdc++-v3/src/filesystem/Makefile \
296			libstdc__fs_la_SOURCES | \
297			sed -e 's/^G_libstdc__fs_la_SOURCES=/G_FILESYSTEM_SOURCES=/'
298		getvars $_PLATFORM/libstdc++-v3/Makefile ATOMICITY_SRCDIR \
299			BASIC_FILE_CC CLOCALE_CC CCODECVT_CC CCOLLATE_CC \
300			CCTYPE_CC  CMESSAGES_CC CMONEY_CC CNUMERIC_CC CTIME_CC \
301			CPU_OPT_BITS_RANDOM
302
303		# includes
304		getvars $_PLATFORM/libstdc++-v3/include/Makefile \
305			$_headers1 | \
306				sed -e 's#\${GNUHOSTDIST}/libstdc++-v3/include/##g' \
307				    -e 's#\${GNUHOSTDIST}/libstdc++-v3/config/##g'
308		getvars $_PLATFORM/libstdc++-v3/include/Makefile \
309			BASIC_FILE_H ALLOCATOR_H CSTDIO_H CLOCALE_H CMESSAGES_H CTIME_H
310	} | sanitise_includes \
311	  | write_mk $_OUTDIRBASE/lib/$_subdir/arch/$_MACHINE_ARCH/defs.mk
312}
313
314##### lib/libsanitizer #####
315
316get_libsanitizer () {
317	_subdir="$1"
318
319	mkdir -p $_OUTDIR/lib/$_subdir/arch/$_MACHINE_ARCH
320
321	{
322		getvars $_PLATFORM/libsanitizer/asan/Makefile \
323			asan_files
324		getvars $_PLATFORM/libsanitizer/lsan/Makefile \
325			lsan_files
326		getvars $_PLATFORM/libsanitizer/tsan/Makefile \
327			tsan_files
328		getvars $_PLATFORM/libsanitizer/ubsan/Makefile \
329			ubsan_files
330		getvars $_PLATFORM/libsanitizer/interception/Makefile \
331			interception_files
332
333	} | sanitise_includes \
334	  | write_mk $_OUTDIRBASE/lib/$_subdir/arch/$_MACHINE_ARCH/defs.mk
335}
336
337##### usr.bin/gcc* #####
338
339get_gcc_bootstrap () {
340	_subdir="$1"
341	mkdir -p $_OUTDIR/usr.bin/$_subdir/arch/$_MACHINE_ARCH
342	for f in auto-host tm config; do
343		write_c $_OUTDIRBASE/usr.bin/$_subdir/arch/$_MACHINE_ARCH/$f.h <$_TMPDIR/gcc/$f.h
344	done
345	# XXXGCC5 don't really want to copy insn-modes as we build
346	# it but libgcc needs to too early yet
347	for f in insn-modes; do
348		write_c $_OUTDIRBASE/usr.bin/$_subdir/arch/$_MACHINE_ARCH/$f.h <$_TMPDIR/gcc/$f.h
349	done
350}
351
352get_gcc () {
353	_subdir="$1"
354	mkdir -p $_OUTDIR/usr.bin/$_subdir/arch/$_MACHINE_ARCH
355	mkdir -p $_OUTDIR/usr.bin/libcpp/arch/$_MACHINE_ARCH
356	mkdir -p $_OUTDIR/usr.bin/include/arch
357	mkdir -p $_OUTDIR/usr.bin/common-target/arch
358	_buildname="BUILD_"
359	_libcppsubdir=""
360	_extravars="TM_H ALL_OPT_FILES ALL_OPT_URL_FILES"
361	_hconfig_h=""
362	_extravars2="tm_file_list build_xm_include_list"
363	_extravars3="tm_p_include_list"
364
365	{
366		getvars gcc/Makefile \
367			${_buildname}EARLY_SUPPORT ${_buildname}ERRORS ${_buildname}PRINT \
368			${_buildname}RTL ${_buildname}SUPPORT ${_buildname}VARRAY \
369			${_buildname}MD | \
370		    sed -e 's#build/errors.o#build-errors.o#g' \
371			-e 's#build/print-rtl.o#build-print-rtl.o#g' \
372			-e 's#build/rtl.o#build-rtl.o#g' \
373			-e 's#build/varray.o#build-varray.o#g' \
374			-e 's#build/ggc-none.o#build-ggc-none.o#g' \
375			-e 's#build/##g'
376		getvars gcc/Makefile \
377			ALL_CFLAGS ALL_CPPFLAGS C_AND_OBJC_OBJS C_OBJS CCCP_OBJS \
378			GCC_OBJS GCOV_OBJS GCOV_DUMP_OBJS GXX_OBJS GTM_H PROTO_OBJS ${_extravars1} \
379			INCLUDES md_file OBJC_OBJS OBJS out_file version \
380			BUILD_PREFIX RTL_H RTL_BASE_H TREE_H ${_hconfig_h} BASIC_BLOCK_H GCC_H \
381			D_TARGET_DEF \
382			GTFILES_SRCDIR GTFILES_FILES_FILES GTFILES_FILES_LANGS \
383			GTFILES GTFILES_LANG_DIR_NAMES HASH_TABLE_H \
384			NOEXCEPTION_FLAGS NATIVE_SYSTEM_HEADER_DIR \
385			tm_defines host_xm_file host_xm_defines tm_p_file \
386			target_cpu_default ${_extravars} ${_extravars2} \
387			lang_specs_files ${_extravars3} \
388			common_out_file \
389				| sanitise_includes
390		getvars gcc/Makefile \
391			LIB2ADDEHDEP | sed 's/unwind.inc//'
392		getvars gcc/Makefile \
393			CXX_OBJS CXX_C_OBJS | sed 's/cp\///g'
394		getvars gcc/Makefile \
395			F77_OBJS | sed 's/f\///g'
396		getvars libcpp/Makefile \
397			libcpp_a_OBJS
398		getvars gcc/Makefile \
399			ENABLE_SHARED
400		echo G_SHLIB_LINK="$CC -shared"
401		echo G_SHLIB_MULTILIB=.
402	} | write_mk $_OUTDIRBASE/usr.bin/$_subdir/arch/$_MACHINE_ARCH/defs.mk
403
404	getvars gcc/Makefile \
405		EXTRA_HEADERS \
406			| write_mk $_OUTDIRBASE/usr.bin/include/arch/$_MACHINE_ARCH.mk
407
408	getvars gcc/Makefile \
409		OBJS-libcommon \
410			| write_mk $_OUTDIRBASE/usr.bin/common/defs.mk
411	getvars gcc/Makefile \
412		OBJS-libcommon-target \
413			| write_mk $_OUTDIRBASE/usr.bin/common-target/arch/$_MACHINE_ARCH.mk
414
415	write_c $_OUTDIRBASE/usr.bin/libcpp/arch/$_MACHINE_ARCH/config.h <$_TMPDIR/libcpp/config.h
416	hfiles='auto-host configargs config bconfig bversion plugin-version multilib tm omp-device-properties'
417	for f in $hfiles; do
418		write_c $_OUTDIRBASE/usr.bin/$_subdir/arch/$_MACHINE_ARCH/$f.h <$_TMPDIR/gcc/$f.h
419		if [ "${_MACHINE_ARCH}" = "powerpc" -a "${f}" = "configargs" ]
420		then
421			ex <<__EOF__ $_OUTDIR/usr.bin/$_subdir/arch/$_MACHINE_ARCH/$f.h
422/configuration_arguments/ s/$//
423ya
424i
425#ifdef _SOFT_FLOAT
426.
427pu
428s/";$/ -with-float=soft";/
429a
430#else
431#endif
432.
433. m +1
434/configure_default_options/ s/{ NULL.*$//
435a
436#ifdef _SOFT_FLOAT
437  { "float", "soft" },
438#endif
439  { NULL, NULL }
440};
441.
442wq
443__EOF__
444		fi
445		if [ "${f}" = "configargs" ]
446		then
447			_srcquoted=$(echo "$_SRC" | sed 's/\//\\\//g')
448			sed -i -E -e "s,$_srcquoted,/usr/src,g" \
449				  -e 's/--build=[^ ]+ --host=([^ ]+)/--build=\1 --host=\1/' \
450				$_OUTDIR/usr.bin/$_subdir/arch/$_MACHINE_ARCH/$f.h
451		fi
452	done
453
454	# keep identical
455	for f in all-tree.def; do
456		cp $_TMPDIR/gcc/$f $_OUTDIR/usr.bin/$_subdir/arch/$_MACHINE_ARCH/$f
457	done
458
459	# special transforms
460	for f in gtyp-input.list; do
461		sed -e "s@^.*$_OUTDIRBASE/dist@SRCDIR@" < $_TMPDIR/gcc/$f > $_OUTDIR/usr.bin/$_subdir/arch/$_MACHINE_ARCH/$f
462	done
463
464	# special platforms
465	if [ "${_MACHINE_ARCH}" = "sh3el" -o "${_MACHINE_ARCH}" = "sh3eb" ]; then
466		write_c $_OUTDIRBASE/usr.bin/$_subdir/arch/$_MACHINE_ARCH/sysroot-suffix.h <$_TMPDIR/gcc/sysroot-suffix.h
467	fi
468
469	if [ "${_MACHINE_ARCH}" = "i386" -o "${_MACHINE_ARCH}" = "x86_64" ]; then
470		write_c $_OUTDIRBASE/usr.bin/$_subdir/arch/$_MACHINE_ARCH/i386-builtin-types.inc <$_TMPDIR/gcc/i386-builtin-types.inc
471	fi
472
473	case "${_MACHINE_ARCH}" in
474	(*arm*)
475		d=$_OUTDIRBASE/usr.bin/$_subdir/arch/${_MACHINE_ARCH}
476		for f in arm-cpu.h arm-cpu-cdata.h arm-cpu-data.h arm-isa.h; do
477			write_c $d/$f <$_TMPDIR/gcc/$f
478		done
479		;;
480	esac
481}
482
483##### main #####
484
485case "$1" in
486# .mk and .h files for libgcc bootstrap (from host build)
487
488libgcc*-bootstrap)
489	get_libgcc gcc
490	get_libgcov gcc $_PLATFORM/libgcc/Makefile
491	get_gcc_bootstrap gcc
492	exit 0
493	;;
494
495libstdc++-bootstrap)
496	get_libstdcxx_v3 libstdc++-v3 gcc
497	exit 0
498	;;
499
500gcc*)
501	get_gcc gcc
502	get_libgcc gcc
503	get_libgcov gcc $_PLATFORM/libgcc/Makefile
504	get_gcc_bootstrap gcc
505	get_gcc_libiberty gcc
506	get_libobjc libobjc
507	get_libstdcxx_v3 libstdc++-v3 gcc
508	# wants libstdc++-v3 built
509	# get_libsanitizer libsanitizer
510	get_libdecnumber libdecnumber
511	get_libgomp libgomp
512	get_libbacktrace libbacktrace
513	exit 0
514	;;
515
516
517*)
518	echo invalid arguments;
519	exit 1
520	;;
521esac
522