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tree.c, tree.h (tree_class_strings): Make array const.
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1# configure.ac for GCC
2# Process this file with autoconf to generate a configuration script.
3
4# Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
5# Free Software Foundation, Inc.
6
7#This file is part of GCC.
8
9#GCC is free software; you can redistribute it and/or modify it under
10#the terms of the GNU General Public License as published by the Free
11#Software Foundation; either version 2, or (at your option) any later
12#version.
13
14#GCC is distributed in the hope that it will be useful, but WITHOUT
15#ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16#FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17#for more details.
18
19#You should have received a copy of the GNU General Public License
20#along with GCC; see the file COPYING. If not, write to the Free
21#Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22#02111-1307, USA.
23
24# --------------------------------
25# Initialization and sanity checks
26# --------------------------------
27
28AC_PREREQ(2.59)
29AC_INIT
30AC_CONFIG_SRCDIR(tree.c)
31AC_CONFIG_HEADER(auto-host.h:config.in)
32
33#Set to 1 on a release branch
34is_release=
35
36# Determine the host, build, and target systems
37AC_CANONICAL_BUILD
38AC_CANONICAL_HOST
39AC_CANONICAL_TARGET
40
41# Determine the noncanonical target name, for directory use.
42ACX_NONCANONICAL_TARGET
43
44# Determine the target- and build-specific subdirectories
45GCC_TOPLEV_SUBDIRS
46
47# Set program_transform_name
48AC_ARG_PROGRAM
49
50# Check for bogus environment variables.
51# Test if LIBRARY_PATH contains the notation for the current directory
52# since this would lead to problems installing/building glibc.
53# LIBRARY_PATH contains the current directory if one of the following
54# is true:
55# - one of the terminals (":" and ";") is the first or last sign
56# - two terminals occur directly after each other
57# - the path contains an element with a dot in it
58AC_MSG_CHECKING(LIBRARY_PATH variable)
59changequote(,)dnl
60case ${LIBRARY_PATH} in
61 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
62 library_path_setting="contains current directory"
63 ;;
64 *)
65 library_path_setting="ok"
66 ;;
67esac
68changequote([,])dnl
69AC_MSG_RESULT($library_path_setting)
70if test "$library_path_setting" != "ok"; then
71AC_MSG_ERROR([
72*** LIBRARY_PATH shouldn't contain the current directory when
73*** building gcc. Please change the environment variable
74*** and run configure again.])
75fi
76
77# Test if GCC_EXEC_PREFIX contains the notation for the current directory
78# since this would lead to problems installing/building glibc.
79# GCC_EXEC_PREFIX contains the current directory if one of the following
80# is true:
81# - one of the terminals (":" and ";") is the first or last sign
82# - two terminals occur directly after each other
83# - the path contains an element with a dot in it
84AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
85changequote(,)dnl
86case ${GCC_EXEC_PREFIX} in
87 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
88 gcc_exec_prefix_setting="contains current directory"
89 ;;
90 *)
91 gcc_exec_prefix_setting="ok"
92 ;;
93esac
94changequote([,])dnl
95AC_MSG_RESULT($gcc_exec_prefix_setting)
96if test "$gcc_exec_prefix_setting" != "ok"; then
97AC_MSG_ERROR([
98*** GCC_EXEC_PREFIX shouldn't contain the current directory when
99*** building gcc. Please change the environment variable
100*** and run configure again.])
101fi
102
103# -----------
104# Directories
105# -----------
106
107# Specify the local prefix
108local_prefix=
109AC_ARG_WITH(local-prefix,
110[ --with-local-prefix=DIR specifies directory to put local include],
111[case "${withval}" in
112yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
113no) ;;
114*) local_prefix=$with_local_prefix ;;
115esac])
116
117# Default local prefix if it is empty
118if test x$local_prefix = x; then
119 local_prefix=/usr/local
120fi
121
122# Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
123# passed in by the toplevel make and thus we'd get different behavior
124# depending on where we built the sources.
125gcc_gxx_include_dir=
126# Specify the g++ header file directory
127AC_ARG_WITH(gxx-include-dir,
128[ --with-gxx-include-dir=DIR
129 specifies directory to put g++ header files],
130[case "${withval}" in
131yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
132no) ;;
133*) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134esac])
135
136if test x${gcc_gxx_include_dir} = x; then
137 if test x${enable_version_specific_runtime_libs} = xyes; then
138 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 else
140 topsrcdir=${srcdir}/.. . ${srcdir}/../config.if
141changequote(<<, >>)dnl
142 gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/"${libstdcxx_incdir}
143changequote([, ])dnl
144 fi
145fi
146
147AC_ARG_WITH(cpp_install_dir,
148[ --with-cpp-install-dir=DIR
149 install the user visible C preprocessor in DIR
150 (relative to PREFIX) as well as PREFIX/bin],
151[if test x$withval = xyes; then
152 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
153elif test x$withval != xno; then
154 cpp_install_dir=$withval
155fi])
156
157# We would like to our source tree to be readonly. However when releases or
158# pre-releases are generated, the flex/bison generated files as well as the
159# various formats of manuals need to be included along with the rest of the
160# sources. Therefore we have --enable-generated-files-in-srcdir to do
161# just that.
162
163AC_MSG_CHECKING([whether to place generated files in the source directory])
164 dnl generated-files-in-srcdir is disabled by default
165 AC_ARG_ENABLE(generated-files-in-srcdir,
166[ --enable-generated-files-in-srcdir
167 put copies of generated files in source dir
168 intended for creating source tarballs for users
169 without texinfo bison or flex.],
170 generated_files_in_srcdir=$enableval,
171 generated_files_in_srcdir=no)
172
173AC_MSG_RESULT($generated_files_in_srcdir)
174
175if test "$generated_files_in_srcdir" = "yes"; then
176 GENINSRC=''
177else
178 GENINSRC='#'
179fi
180AC_SUBST(GENINSRC)
181
182# -------------------
183# Find default linker
184# -------------------
185
186# With GNU ld
187AC_ARG_WITH(gnu-ld,
188[ --with-gnu-ld arrange to work with GNU ld.],
189gnu_ld_flag="$with_gnu_ld",
190gnu_ld_flag=no)
191
192# With pre-defined ld
193AC_ARG_WITH(ld,
194[ --with-ld arrange to use the specified ld (full pathname)],
195DEFAULT_LINKER="$with_ld")
196if test x"${DEFAULT_LINKER+set}" = x"set"; then
197 if test ! -x "$DEFAULT_LINKER"; then
198 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
199 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
200 gnu_ld_flag=yes
201 fi
202 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
203 [Define to enable the use of a default linker.])
204fi
205
206AC_MSG_CHECKING([whether a default linker was specified])
207if test x"${DEFAULT_LINKER+set}" = x"set"; then
208 if test x"$gnu_ld_flag" = x"no"; then
209 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
210 else
211 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
212 fi
213else
214 AC_MSG_RESULT(no)
215fi
216
217# With demangler in GNU ld
218AC_ARG_WITH(demangler-in-ld,
219[ --with-demangler-in-ld try to use demangler in GNU ld.],
220demangler_in_ld="$with_demangler_in_ld",
221demangler_in_ld=no)
222
223# ----------------------
224# Find default assembler
225# ----------------------
226
227# With GNU as
228AC_ARG_WITH(gnu-as,
229[ --with-gnu-as arrange to work with GNU as],
230gas_flag="$with_gnu_as",
231gas_flag=no)
232
233AC_ARG_WITH(as,
234[ --with-as arrange to use the specified as (full pathname)],
235DEFAULT_ASSEMBLER="$with_as")
236if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
237 if test ! -x "$DEFAULT_ASSEMBLER"; then
238 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
239 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
240 gas_flag=yes
241 fi
242 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
243 [Define to enable the use of a default assembler.])
244fi
245
246AC_MSG_CHECKING([whether a default assembler was specified])
247if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
248 if test x"$gas_flag" = x"no"; then
249 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
250 else
251 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
252 fi
253else
254 AC_MSG_RESULT(no)
255fi
256
257# ---------------
258# Find C compiler
259# ---------------
260
261# If a non-executable a.out is present (e.g. created by GNU as above even if
262# invoked with -v only), the IRIX 6 native ld just overwrites the existing
263# file, even when creating an executable, so an execution test fails.
264# Remove possible default executable files to avoid this.
265#
266# FIXME: This really belongs into AC_PROG_CC and can be removed once
267# Autoconf includes it.
268rm -f a.out a.exe b.out
269
270# Find the native compiler
271AC_PROG_CC
272AC_PROG_CC_C_O
273# autoconf is lame and doesn't give us any substitution variable for this.
274if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
275 NO_MINUS_C_MINUS_O=yes
276else
277 OUTPUT_OPTION='-o $@'
278fi
279AC_SUBST(NO_MINUS_C_MINUS_O)
280AC_SUBST(OUTPUT_OPTION)
281
282# -------------------------
283# Check C compiler features
284# -------------------------
285
286AC_PROG_CPP
287AC_C_INLINE
288
289gcc_AC_C_LONG_LONG
290
291# sizeof(char) is 1 by definition.
292AC_COMPILE_CHECK_SIZEOF(void *)
293AC_COMPILE_CHECK_SIZEOF(short)
294AC_COMPILE_CHECK_SIZEOF(int)
295AC_COMPILE_CHECK_SIZEOF(long)
296if test $ac_cv_c_long_long = yes; then
297 AC_COMPILE_CHECK_SIZEOF(long long)
298fi
299if test $ac_cv_c___int64 = yes; then
300 AC_COMPILE_CHECK_SIZEOF(__int64)
301fi
302
303# ---------------------
304# Warnings and checking
305# ---------------------
306
307# Check $CC warning features (if it's GCC).
308# We want to use -pedantic, but we don't want warnings about
309# * 'long long'
310# * variadic macros
311# So, we only use -pedantic if we can disable those warnings.
312
313AC_CACHE_CHECK(
314 [whether ${CC} accepts -Wno-long-long],
315 [ac_cv_prog_cc_w_no_long_long],
316 [save_CFLAGS="$CFLAGS"
317 CFLAGS="-Wno-long-long"
318 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
319 [ac_cv_prog_cc_w_no_long_long=yes],
320 [ac_cv_prog_cc_w_no_long_long=no])
321 CFLAGS="$save_CFLAGS"
322 ])
323
324AC_CACHE_CHECK(
325 [whether ${CC} accepts -Wno-variadic-macros],
326 [ac_cv_prog_cc_w_no_variadic_macros],
327 [save_CFLAGS="$CFLAGS"
328 CFLAGS="-Wno-variadic-macros"
329 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
330 [ac_cv_prog_cc_w_no_variadic_macros=yes],
331 [ac_cv_prog_cc_w_no_variadic_macros=no])
332 CFLAGS="$save_CFLAGS"
333 ])
334
335strict1_warn=
336if test $ac_cv_prog_cc_w_no_long_long = yes \
337 && test $ac_cv_prog_cc_w_no_variadic_macros = yes ; then
338 strict1_warn="-pedantic -Wno-long-long -Wno-variadic-macros"
339fi
340AC_SUBST(strict1_warn)
341
342# Add -Wold-style-definition if it's accepted
343AC_CACHE_CHECK(
344 [whether ${CC} accepts -Wold-style-definition],
345 [ac_cv_prog_cc_w_old_style_definition],
346 [save_CFLAGS="$CFLAGS"
347 CFLAGS="-Wold-style-definition"
348 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
349 [ac_cv_prog_cc_w_old_style_definition=yes],
350 [ac_cv_prog_cc_w_old_style_definition=no])
351 CFLAGS="$save_CFLAGS"
352 ])
353if test $ac_cv_prog_cc_w_old_style_definition = yes ; then
354 strict1_warn="${strict1_warn} -Wold-style-definition"
355fi
356
357# Enable -Werror, period.
358AC_ARG_ENABLE(werror_always,
359[ --enable-werror-always enable -Werror always], [],
360[enable_werror_always=no])
361if test x${enable_werror_always} = xyes ; then
362 strict1_warn="${strict1_warn} -Werror"
363 WERROR=-Werror
364fi
365
366# If the native compiler is GCC, we can enable warnings even in stage1.
367# That's useful for people building cross-compilers, or just running a
368# quick `make'.
369warn_cflags=
370if test "x$GCC" = "xyes"; then
371 warn_cflags='$(GCC_WARN_CFLAGS)'
372fi
373AC_SUBST(warn_cflags)
374
375# Enable -Werror in bootstrap stage2 and later.
376AC_ARG_ENABLE(werror,
377[ --enable-werror enable -Werror in bootstrap stage2 and later], [],
378[if test x$is_release = x ; then
379 # Default to "yes" on development branches.
380 enable_werror=yes
381else
382 # Default to "no" on release branches.
383 enable_werror=no
384fi])
385if test x$enable_werror = xyes ; then
386 WERROR=-Werror
387fi
388AC_SUBST(WERROR)
389
390# Enable expensive internal checks
391AC_ARG_ENABLE(checking,
392[ --enable-checking[=LIST]
393 enable expensive run-time checks. With LIST,
394 enable only specific categories of checks.
395 Categories are: assert,fold,gc,gcac,misc,
396 rtlflag,rtl,tree,valgrind,release,yes,all;],
397[ac_checking_flags="${enableval}"],[
398# Determine the default checks.
399if test x$is_release = x ; then
400 ac_checking_flags=yes
401else
402 ac_checking_flags=release
403fi])
404ac_assert_checking=1
405ac_checking=
406ac_tree_checking=
407ac_rtl_checking=
408ac_rtlflag_checking=
409ac_gc_checking=
410ac_gc_always_collect=
411ac_fold_checking=
412IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
413for check in $ac_checking_flags
414do
415 case $check in
416 yes) ac_assert_checking=1 ; ac_checking=1 ;
417 ac_tree_checking=1 ; ac_gc_checking=1 ;
418 ac_rtlflag_checking=1 ;;
419 no) ac_assert_checking= ; ac_checking= ;
420 ac_tree_checking= ; ac_rtl_checking= ;
421 ac_rtlflag_checking= ; ac_gc_checking= ;
422 ac_gc_always_collect= ; ac_fold_checking= ;;
423 all) ac_assert_checking=1 ; ac_checking=1 ;
424 ac_tree_checking=1 ; ac_rtl_checking=1 ;
425 ac_rtlflag_checking=1 ; ac_gc_checking=1 ;
426 ac_gc_always_collect=1 ; ac_fold_checking=1 ;;
427 release) ac_assert_checking=1 ;;
428 assert) ac_assert_checking=1 ;;
429 fold) ac_fold_checking=1 ;;
430 gc) ac_gc_checking=1 ;;
431 gcac) ac_gc_always_collect=1 ;;
432 misc) ac_checking=1 ;;
433 rtlflag) ac_rtlflag_checking=1 ;;
434 rtl) ac_rtl_checking=1 ;;
435 tree) ac_tree_checking=1 ;;
436 valgrind) ac_checking_valgrind=1 ;;
437 *) AC_MSG_ERROR(unknown check category $check) ;;
438 esac
439done
440IFS="$ac_save_IFS"
441
442nocommon_flag=""
443if test x$ac_checking != x ; then
444 AC_DEFINE(ENABLE_CHECKING, 1,
445[Define if you want more run-time sanity checks. This one gets a grab
446 bag of miscellaneous but relatively cheap checks.])
447 nocommon_flag=-fno-common
448fi
449AC_SUBST(nocommon_flag)
450if test x$ac_assert_checking != x ; then
451 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
452[Define if you want assertions enabled. This is a cheap check.])
453fi
454if test x$ac_tree_checking != x ; then
455 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
456[Define if you want all operations on trees (the basic data
457 structure of the front ends) to be checked for dynamic type safety
458 at runtime. This is moderately expensive. The tree browser debugging
459 routines will also be enabled by this option.
460 ])
461 TREEBROWSER=tree-browser.o
462fi
463AC_SUBST(TREEBROWSER)
464if test x$ac_rtl_checking != x ; then
465 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
466[Define if you want all operations on RTL (the basic data structure
467 of the optimizer and back end) to be checked for dynamic type safety
468 at runtime. This is quite expensive.])
469fi
470if test x$ac_rtlflag_checking != x ; then
471 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
472[Define if you want RTL flag accesses to be checked against the RTL
473 codes that are supported for each access macro. This is relatively
474 cheap.])
475fi
476if test x$ac_gc_checking != x ; then
477 AC_DEFINE(ENABLE_GC_CHECKING, 1,
478[Define if you want the garbage collector to do object poisoning and
479 other memory allocation checks. This is quite expensive.])
480fi
481if test x$ac_gc_always_collect != x ; then
482 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
483[Define if you want the garbage collector to operate in maximally
484 paranoid mode, validating the entire heap and collecting garbage at
485 every opportunity. This is extremely expensive.])
486fi
487if test x$ac_fold_checking != x ; then
488 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
489[Define if you want fold checked that it never destructs its argument.
490 This is quite expensive.])
491fi
492valgrind_path_defines=
493valgrind_command=
494
495dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
496dnl # an if statement. This was the source of very frustrating bugs
497dnl # in converting to autoconf 2.5x!
498AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
499
500if test x$ac_checking_valgrind != x ; then
501 # It is certainly possible that there's valgrind but no valgrind.h.
502 # GCC relies on making annotations so we must have both.
503 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
504 AC_TRY_CPP(
505 [#include <valgrind/memcheck.h>
506#ifndef VALGRIND_DISCARD
507#error VALGRIND_DISCARD not defined
508#endif],
509 [gcc_cv_header_valgrind_memcheck_h=yes],
510 [gcc_cv_header_valgrind_memcheck_h=no])
511 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
512 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
513 AC_TRY_CPP(
514 [#include <memcheck.h>
515#ifndef VALGRIND_DISCARD
516#error VALGRIND_DISCARD not defined
517#endif],
518 [gcc_cv_header_memcheck_h=yes],
519 gcc_cv_header_memcheck_h=no)
520 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
521 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
522 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
523 if test "x$valgrind_path" = "x" \
524 || (test $have_valgrind_h = no \
525 && test $gcc_cv_header_memcheck_h = no \
526 && test $gcc_cv_header_valgrind_memcheck_h = no); then
527 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
528 fi
529 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
530 valgrind_command="$valgrind_path -q"
531 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
532[Define if you want to run subprograms and generated programs
533 through valgrind (a memory checker). This is extremely expensive.])
534 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
535 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
536 [Define if valgrind's valgrind/memcheck.h header is installed.])
537 fi
538 if test $gcc_cv_header_memcheck_h = yes; then
539 AC_DEFINE(HAVE_MEMCHECK_H, 1,
540 [Define if valgrind's memcheck.h header is installed.])
541 fi
542fi
543AC_SUBST(valgrind_path_defines)
544AC_SUBST(valgrind_command)
545
546AC_ARG_ENABLE(mapped-location,
547[ --enable-mapped-location location_t is fileline integer cookie],,
548enable_mapped_location=no)
549
550if test "$enable_mapped_location" = yes ; then
551 AC_DEFINE(USE_MAPPED_LOCATION, 1,
552[Define if location_t is fileline integer cookie.])
553fi
554
555# Enable code coverage collection
556AC_ARG_ENABLE(coverage,
557[ --enable-coverage[=LEVEL]
558 enable compiler's code coverage collection.
559 Use to measure compiler performance and locate
560 unused parts of the compiler. With LEVEL, specify
561 optimization. Values are opt, noopt,
562 default is noopt],
563[case "${enableval}" in
564 yes|noopt)
565 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
566 ;;
567 opt)
568 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
569 ;;
570 no)
571 # a.k.a. --disable-coverage
572 coverage_flags=""
573 ;;
574 *)
575 AC_MSG_ERROR(unknown coverage setting $enableval)
576 ;;
577esac],
578[coverage_flags=""])
579AC_SUBST(coverage_flags)
580
581AC_ARG_ENABLE(gather-detailed-mem-stats,
582[ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
583[enable_gather_detailed_mem_stats=no])
584if test x$enable_gather_detailed_mem_stats = xyes ; then
585 AC_DEFINE(GATHER_STATISTICS, 1,
586 [Define to enable detailed memory allocation stats gathering.])
587fi
588
589# -------------------------------
590# Miscenalleous configure options
591# -------------------------------
592
593# With stabs
594AC_ARG_WITH(stabs,
595[ --with-stabs arrange to use stabs instead of host debug format],
596stabs="$with_stabs",
597stabs=no)
598
599# Determine whether or not multilibs are enabled.
600AC_ARG_ENABLE(multilib,
601[ --enable-multilib enable library support for multiple ABIs],
602[], [enable_multilib=yes])
603AC_SUBST(enable_multilib)
604
605# Enable __cxa_atexit for C++.
606AC_ARG_ENABLE(__cxa_atexit,
607[ --enable-__cxa_atexit enable __cxa_atexit for C++],
608[], [])
609
610# Enable threads
611# Pass with no value to take the default
612# Pass with a value to specify a thread package
613AC_ARG_ENABLE(threads,
614[ --enable-threads enable thread usage for target GCC
615 --enable-threads=LIB use LIB thread package for target GCC],,
616[enable_threads=''])
617
618AC_ARG_ENABLE(objc-gc,
619[ --enable-objc-gc enable the use of Boehm's garbage collector with
620 the GNU Objective-C runtime],
621if test x$enable_objc_gc = xno; then
622 objc_boehm_gc=''
623else
624 objc_boehm_gc=1
625fi,
626objc_boehm_gc='')
627
628AC_ARG_WITH(dwarf2,
629[ --with-dwarf2 force the default debug format to be DWARF 2],
630dwarf2="$with_dwarf2",
631dwarf2=no)
632
633AC_ARG_ENABLE(shared,
634[ --disable-shared don't provide a shared libgcc],
635[
636 case $enable_shared in
637 yes | no) ;;
638 *)
639 enable_shared=no
640 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
641 for pkg in $enableval; do
642 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
643 enable_shared=yes
644 fi
645 done
646 IFS="$ac_save_ifs"
647 ;;
648 esac
649], [enable_shared=yes])
650AC_SUBST(enable_shared)
651
652AC_ARG_WITH(sysroot,
653[ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
654[
655 case ${with_sysroot} in
656 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
657 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
658 esac
659
660 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
661 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)'
662
663 if test "x$exec_prefix" = xNONE; then
664 if test "x$prefix" = xNONE; then
665 test_prefix=/usr/local
666 else
667 test_prefix=$prefix
668 fi
669 else
670 test_prefix=$exec_prefix
671 fi
672 case ${TARGET_SYSTEM_ROOT} in
673 "${test_prefix}"|"${test_prefix}/"*|\
674 '${exec_prefix}'|'${exec_prefix}/'*)
675 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
676 TARGET_SYSTEM_ROOT_DEFINE="$t"
677 ;;
678 esac
679], [
680 TARGET_SYSTEM_ROOT=
681 TARGET_SYSTEM_ROOT_DEFINE=
682 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
683])
684AC_SUBST(TARGET_SYSTEM_ROOT)
685AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
686AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
687
688# Build with intermodule optimisations
689AC_ARG_ENABLE(intermodule,
690[ --enable-intermodule build the compiler in one step],
691[case ${enable_intermodule} in
692 yes) onestep="-onestep";;
693 *) onestep="";;
694esac],
695[onestep=""])
696AC_SUBST(onestep)
697
698# Sanity check enable_languages in case someone does not run the toplevel
699# configure # script.
700AC_ARG_ENABLE(languages,
701[ --enable-languages=LIST specify which front-ends to build],
702[case ,${enable_languages}, in
703 ,,|,yes,)
704 # go safe -- we cannot be much sure without the toplevel
705 # configure's
706 # analysis of which target libs are present and usable
707 enable_languages=c
708 ;;
709 *,all,*)
710 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
711 ;;
712 *,c,*)
713 ;;
714 *)
715 enable_languages=c,${enable_languages}
716 ;;
717esac],
718[enable_languages=c])
719
720subdirs=
721for lang in ${srcdir}/*/config-lang.in
722do
723 case $lang in
724 # The odd quoting in the next line works around
725 # an apparent bug in bash 1.12 on linux.
726changequote(,)dnl
727 ${srcdir}/[*]/config-lang.in) ;;
728 *)
729 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
730 if test "x$lang_alias" = x
731 then
732 echo "$lang doesn't set \$language." 1>&2
733 exit 1
734 fi
735 case ",$enable_languages," in
736 *,$lang_alias,*)
737 subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" ;;
738 esac
739 ;;
740changequote([,])dnl
741 esac
742done
743
744
745# -------------------------
746# Checks for other programs
747# -------------------------
748
749AC_PROG_MAKE_SET
750
751# Find some useful tools
752AC_PROG_AWK
753# We need awk to create options.c and options.h.
754# Bail out if it's missing.
755case ${AWK} in
756 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
757esac
758
759gcc_AC_PROG_LN_S
760ACX_PROG_LN($LN_S)
761AC_PROG_RANLIB
762case "${host}" in
763*-*-darwin*)
764 # By default, the Darwin ranlib will not treat common symbols as
765 # definitions when building the archive table of contents. Other
766 # ranlibs do that; pass an option to the Darwin ranlib that makes
767 # it behave similarly.
768 ranlib_flags="-c"
769 ;;
770*)
771 ranlib_flags=""
772esac
773AC_SUBST(ranlib_flags)
774
775gcc_AC_PROG_INSTALL
776
777# See if cmp has --ignore-initial.
778gcc_AC_PROG_CMP_IGNORE_INITIAL
779
780# See if we have the mktemp command.
781AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
782
783MISSING="${CONFIG_SHELL-/bin/sh} $srcdir/../missing"
784
785# See if makeinfo has been installed and is modern enough
786# that we can use it.
787gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
788 [GNU texinfo.* \([0-9][0-9.]*\)],
789 [4.[2-9]*])
790if test $gcc_cv_prog_makeinfo_modern = no; then
791 MAKEINFO="$MISSING makeinfo"
792 AC_MSG_WARN([
793*** Makeinfo is missing or too old.
794*** Info documentation will not be built.])
795 BUILD_INFO=
796else
797 BUILD_INFO=info
798fi
799AC_SUBST(BUILD_INFO)
800
801# Is pod2man recent enough to regenerate manpages?
802AC_MSG_CHECKING([for recent Pod::Man])
803if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
804 AC_MSG_RESULT(yes)
805 GENERATED_MANPAGES=generated-manpages
806else
807 AC_MSG_RESULT(no)
808 GENERATED_MANPAGES=
809fi
810AC_SUBST(GENERATED_MANPAGES)
811
812# How about lex?
813dnl Don't use AC_PROG_LEX; we insist on flex.
814dnl LEXLIB is not useful in gcc.
815AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
816
817# Bison?
818AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
819
820# Binutils are not build modules, unlike bison/flex/makeinfo. So we
821# check for build == host before using them.
822
823# NM
824if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
825 && test -d ../binutils ; then
826 NM='$(objdir)/../binutils/nm-new'
827else
828 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
829fi
830
831# AR
832if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
833 && test -d ../binutils ; then
834 AR='$(objdir)/../binutils/ar'
835else
836 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
837fi
838
839
840# --------------------
841# Checks for C headers
842# --------------------
843
844AC_MSG_CHECKING(for GNU C library)
845AC_CACHE_VAL(gcc_cv_glibc,
846[AC_TRY_COMPILE(
847 [#include <features.h>],[
848#if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
849#error Not a GNU C library system
850#endif],
851 [gcc_cv_glibc=yes],
852 gcc_cv_glibc=no)])
853AC_MSG_RESULT($gcc_cv_glibc)
854if test $gcc_cv_glibc = yes; then
855 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
856fi
857
858# Need to reject headers which give warnings, so that the -Werror bootstrap
859# works later. *sigh* This needs to come before all header checks.
860AC_PROG_CPP_WERROR
861
862AC_HEADER_STDC
863AC_HEADER_TIME
864ACX_HEADER_STRING
865AC_HEADER_SYS_WAIT
866AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h \
867 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
868 sys/resource.h sys/param.h sys/times.h sys/stat.h \
869 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
870
871# Check for thread headers.
872AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
873AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
874
875# These tests can't be done till we know if we have limits.h.
876gcc_AC_C_CHAR_BIT
877AC_C_BIGENDIAN_CROSS
878
879# --------
880# UNSORTED
881# --------
882
883# Stage specific cflags for build.
884stage1_cflags=
885case $build in
886vax-*-*)
887 if test x$GCC = xyes
888 then
889 stage1_cflags="-Wa,-J"
890 else
891 stage1_cflags="-J"
892 fi
893 ;;
894powerpc-*-darwin*)
895 # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
896 # sources; use -no-cpp-precomp to get to GNU cpp.
897 # Apple's GCC has bugs in designated initializer handling, so disable
898 # that too.
899 stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
900 ;;
901esac
902AC_SUBST(stage1_cflags)
903
904# These libraries may be used by collect2.
905# We may need a special search path to get them linked.
906AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
907[save_LIBS="$LIBS"
908for libs in '' -lld -lmld \
909 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
910 '-L/usr/lib/cmplrs/cc3.11 -lmld'
911do
912 LIBS="$libs"
913 AC_TRY_LINK_FUNC(ldopen,
914 [gcc_cv_collect2_libs="$libs"; break])
915done
916LIBS="$save_LIBS"
917test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
918case $gcc_cv_collect2_libs in
919 "none required") ;;
920 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
921esac
922AC_SUBST(COLLECT2_LIBS)
923
924# When building Ada code on Alpha, we need exc_resume which is usually in
925# -lexc. So test for it.
926save_LIBS="$LIBS"
927LIBS=
928AC_SEARCH_LIBS(exc_resume, exc)
929GNAT_LIBEXC="$LIBS"
930LIBS="$save_LIBS"
931AC_SUBST(GNAT_LIBEXC)
932
933# Some systems put ldexp and frexp in libm instead of libc; assume
934# they're both in the same place. jcf-dump needs them.
935save_LIBS="$LIBS"
936LIBS=
937AC_SEARCH_LIBS(ldexp, m)
938LDEXP_LIB="$LIBS"
939LIBS="$save_LIBS"
940AC_SUBST(LDEXP_LIB)
941
942# Use <inttypes.h> only if it exists,
943# doesn't clash with <sys/types.h>, and declares intmax_t.
944AC_MSG_CHECKING(for inttypes.h)
945AC_CACHE_VAL(gcc_cv_header_inttypes_h,
946[AC_TRY_COMPILE(
947 [#include <sys/types.h>
948#include <inttypes.h>],
949 [intmax_t i = -1;],
950 [gcc_cv_header_inttypes_h=yes],
951 gcc_cv_header_inttypes_h=no)])
952AC_MSG_RESULT($gcc_cv_header_inttypes_h)
953if test $gcc_cv_header_inttypes_h = yes; then
954 AC_DEFINE(HAVE_INTTYPES_H, 1,
955 [Define if you have a working <inttypes.h> header file.])
956fi
957
958dnl Disabled until we have a complete test for buggy enum bitfields.
959dnl gcc_AC_C_ENUM_BF_UNSIGNED
960
961AC_CHECK_FUNCS(times clock dup2 kill getrlimit setrlimit atoll atoq \
962 sysconf strsignal putc_unlocked fputc_unlocked fputs_unlocked \
963 fwrite_unlocked fprintf_unlocked getrusage nl_langinfo \
964 scandir alphasort gettimeofday mbstowcs wcswidth mmap mincore \
965 setlocale)
966
967if test x$ac_cv_func_mbstowcs = xyes; then
968 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
969[ AC_TRY_RUN([#include <stdlib.h>
970int main()
971{
972 mbstowcs(0, "", 0);
973 return 0;
974}],
975 gcc_cv_func_mbstowcs_works=yes,
976 gcc_cv_func_mbstowcs_works=no,
977 gcc_cv_func_mbstowcs_works=yes)])
978 if test x$gcc_cv_func_mbstowcs_works = xyes; then
979 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
980 [Define this macro if mbstowcs does not crash when its
981 first argument is NULL.])
982 fi
983fi
984
985AC_CHECK_TYPE(ssize_t, int)
986
987# Try to determine the array type of the second argument of getgroups
988# for the target system (int or gid_t).
989AC_TYPE_GETGROUPS
990if test "${target}" = "${build}"; then
991 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
992else
993 case "${target}" in
994 # This condition may need some tweaking. It should include all
995 # targets where the array type of the second argument of getgroups
996 # is int and the type of gid_t is not equivalent to int.
997 *-*-sunos* | *-*-ultrix*)
998 TARGET_GETGROUPS_T=int
999 ;;
1000 *)
1001 TARGET_GETGROUPS_T=gid_t
1002 ;;
1003 esac
1004fi
1005AC_SUBST(TARGET_GETGROUPS_T)
1006
1007gcc_AC_FUNC_PRINTF_PTR
1008gcc_AC_FUNC_MMAP_BLACKLIST
1009
1010case "${host}" in
1011*-*-*vms*)
1012 # Under VMS, vfork works very differently than on Unix. The standard test
1013 # won't work, and it isn't easily adaptable. It makes more sense to
1014 # just force it.
1015 ac_cv_func_vfork_works=yes
1016 ;;
1017esac
1018AC_FUNC_VFORK
1019
1020AM_ICONV
1021# Until we have in-tree GNU iconv:
1022LIBICONV_DEP=
1023AC_SUBST(LIBICONV_DEP)
1024
1025AM_LC_MESSAGES
1026
1027# We will need to find libiberty.h and ansidecl.h
1028saved_CFLAGS="$CFLAGS"
1029CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1030gcc_AC_CHECK_DECLS(getenv atol sbrk abort atof getcwd getwd \
1031 strsignal putc_unlocked fputs_unlocked fwrite_unlocked \
1032 fprintf_unlocked strstr errno snprintf vasprintf \
1033 malloc realloc calloc free basename getopt clock getpagesize, , ,[
1034#include "ansidecl.h"
1035#include "system.h"])
1036
1037gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1038#include "ansidecl.h"
1039#include "system.h"
1040#ifdef HAVE_SYS_RESOURCE_H
1041#include <sys/resource.h>
1042#endif
1043])
1044
1045AC_TRY_COMPILE([
1046#include "ansidecl.h"
1047#include "system.h"
1048#ifdef HAVE_SYS_RESOURCE_H
1049#include <sys/resource.h>
1050#endif
1051],[rlim_t l = 0;],,[AC_DEFINE([rlim_t],[long],
1052[Define to \`long' if <sys/resource.h> doesn't define.])])
1053
1054gcc_AC_CHECK_DECLS(ldgetname, , ,[
1055#include "ansidecl.h"
1056#include "system.h"
1057#ifdef HAVE_LDFCN_H
1058#include <ldfcn.h>
1059#endif
1060])
1061
1062gcc_AC_CHECK_DECLS(times, , ,[
1063#include "ansidecl.h"
1064#include "system.h"
1065#ifdef HAVE_SYS_TIMES_H
1066#include <sys/times.h>
1067#endif
1068])
1069
1070# More time-related stuff.
1071AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1072AC_TRY_COMPILE([
1073#include "ansidecl.h"
1074#include "system.h"
1075#ifdef HAVE_SYS_TIMES_H
1076#include <sys/times.h>
1077#endif
1078], [struct tms tms;], ac_cv_struct_tms=yes, ac_cv_struct_tms=no)])
1079if test $ac_cv_struct_tms = yes; then
1080 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1081 [Define if <sys/times.h> defines struct tms.])
1082fi
1083
1084# use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1085# revisit after autoconf 2.50.
1086AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1087AC_TRY_COMPILE([
1088#include "ansidecl.h"
1089#include "system.h"
1090], [clock_t x;], gcc_cv_type_clock_t=yes, gcc_cv_type_clock_t=no)])
1091if test $gcc_cv_type_clock_t = yes; then
1092 AC_DEFINE(HAVE_CLOCK_T, 1,
1093 [Define if <time.h> defines clock_t.])
1094fi
1095
1096# Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1097CFLAGS="$saved_CFLAGS"
1098
1099gcc_AC_INITFINI_ARRAY
1100
1101# mkdir takes a single argument on some systems.
1102gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1103
1104# File extensions
1105manext='.1'
1106objext='.o'
1107AC_SUBST(manext)
1108AC_SUBST(objext)
1109
1110# With Setjmp/Longjmp based exception handling.
1111AC_ARG_ENABLE(sjlj-exceptions,
1112[ --enable-sjlj-exceptions
1113 arrange to use setjmp/longjmp exception handling],
1114[sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1115AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1116 [Define 0/1 to force the choice for exception handling model.])])
1117
1118# For platforms with the unwind ABI which includes an unwind library,
1119# libunwind, we can choose to use the system libunwind.
1120AC_ARG_WITH(system-libunwind,
1121[ --with-system-libunwind use installed libunwind])
1122
1123# --------------------------------------------------------
1124# Build, host, and target specific configuration fragments
1125# --------------------------------------------------------
1126
1127# Collect build-machine-specific information.
1128. ${srcdir}/config.build
1129
1130# Collect host-machine-specific information.
1131. ${srcdir}/config.host
1132
1133target_gtfiles=
1134
1135# Collect target-machine-specific information.
1136. ${srcdir}/config.gcc
1137
1138extra_objs="${host_extra_objs} ${extra_objs}"
1139extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1140
1141# Default the target-machine variables that were not explicitly set.
1142if test x"$tm_file" = x
1143then tm_file=$cpu_type/$cpu_type.h; fi
1144
1145if test x"$extra_headers" = x
1146then extra_headers=; fi
1147
1148if test x$md_file = x
1149then md_file=$cpu_type/$cpu_type.md; fi
1150
1151if test x$out_file = x
1152then out_file=$cpu_type/$cpu_type.c; fi
1153
1154if test x"$tmake_file" = x
1155then tmake_file=$cpu_type/t-$cpu_type
1156fi
1157
1158if test x"$dwarf2" = xyes
1159then tm_file="$tm_file tm-dwarf2.h"
1160fi
1161
1162# Say what files are being used for the output code and MD file.
1163echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1164echo "Using \`$srcdir/config/$md_file' as machine description file."
1165
1166# If any of the xm_file variables contain nonexistent files, warn
1167# about them and drop them.
1168
1169bx=
1170for x in $build_xm_file; do
1171 if test -f $srcdir/config/$x
1172 then bx="$bx $x"
1173 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1174 fi
1175done
1176build_xm_file="$bx"
1177
1178hx=
1179for x in $host_xm_file; do
1180 if test -f $srcdir/config/$x
1181 then hx="$hx $x"
1182 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1183 fi
1184done
1185host_xm_file="$hx"
1186
1187tx=
1188for x in $xm_file; do
1189 if test -f $srcdir/config/$x
1190 then tx="$tx $x"
1191 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1192 fi
1193done
1194xm_file="$tx"
1195
1196count=a
1197for f in $tm_file; do
1198 count=${count}x
1199done
1200if test $count = ax; then
1201 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1202else
1203 echo "Using the following target machine macro files:"
1204 for f in $tm_file; do
1205 echo " $srcdir/config/$f"
1206 done
1207fi
1208
1209if test x$need_64bit_hwint = xyes; then
1210 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1211[Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1212fi
1213
1214if test x$use_long_long_for_widest_fast_int = xyes; then
1215 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1216[Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1217efficiently supported by the host hardware.])
1218fi
1219
1220count=a
1221for f in $host_xm_file; do
1222 count=${count}x
1223done
1224if test $count = a; then
1225 :
1226elif test $count = ax; then
1227 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1228else
1229 echo "Using the following host machine macro files:"
1230 for f in $host_xm_file; do
1231 echo " $srcdir/config/$f"
1232 done
1233fi
1234echo "Using ${out_host_hook_obj} for host machine hooks."
1235
1236if test "$host_xm_file" != "$build_xm_file"; then
1237 count=a
1238 for f in $build_xm_file; do
1239 count=${count}x
1240 done
1241 if test $count = a; then
1242 :
1243 elif test $count = ax; then
1244 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1245 else
1246 echo "Using the following build machine macro files:"
1247 for f in $build_xm_file; do
1248 echo " $srcdir/config/$f"
1249 done
1250 fi
1251fi
1252
1253# ---------
1254# Threading
1255# ---------
1256
1257# Check if a valid thread package
1258case ${enable_threads} in
1259 "" | no)
1260 # No threads
1261 target_thread_file='single'
1262 ;;
1263 yes)
1264 # default
1265 target_thread_file='single'
1266 ;;
1267 aix | dce | gnat | irix | posix | rtems | \
1268 single | solaris | vxworks | win32 )
1269 target_thread_file=${enable_threads}
1270 ;;
1271 *)
1272 echo "${enable_threads} is an unknown thread package" 1>&2
1273 exit 1
1274 ;;
1275esac
1276
1277if test x${thread_file} = x; then
1278 # No thread file set by target-specific clauses in config.gcc,
1279 # so use file chosen by default logic above
1280 thread_file=${target_thread_file}
1281fi
1282
1283# Make gthr-default.h if we have a thread file.
1284gthread_flags=
1285if test $thread_file != single; then
1286 rm -f gthr-default.h
1287 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1288 gthread_flags=-DHAVE_GTHR_DEFAULT
1289fi
1290AC_SUBST(gthread_flags)
1291
1292# --------
1293# UNSORTED
1294# --------
1295
1296if test x$enable___cxa_atexit = xyes || \
1297 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1298 AC_CHECK_FUNC(__cxa_atexit,
1299 [AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 1,
1300 [Define if you want to use __cxa_atexit, rather than atexit, to
1301 register C++ destructors for local statics and global objects.
1302 This is essential for fully standards-compliant handling of
1303 destructors, but requires __cxa_atexit in libc.])],
1304 echo "__cxa_atexit can't be enabled on this target")
1305fi
1306
1307# Look for a file containing extra machine modes.
1308if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1309 extra_modes_file='$(srcdir)'/config/${extra_modes}
1310 AC_SUBST(extra_modes_file)
1311 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1312 [Define to the name of a file containing a list of extra machine modes
1313 for this architecture.])
1314fi
1315
1316# auto-host.h is the file containing items generated by autoconf and is
1317# the first file included by config.h.
1318# If host=build, it is correct to have bconfig include auto-host.h
1319# as well. If host!=build, we are in error and need to do more
1320# work to find out the build config parameters.
1321if test x$host = x$build
1322then
1323 build_auto=auto-host.h
1324else
1325 # We create a subdir, then run autoconf in the subdir.
1326 # To prevent recursion we set host and build for the new
1327 # invocation of configure to the build for this invocation
1328 # of configure.
1329 tempdir=build.$$
1330 rm -rf $tempdir
1331 mkdir $tempdir
1332 cd $tempdir
1333 case ${srcdir} in
1334 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1335 *) realsrcdir=../${srcdir};;
1336 esac
1337 saved_CFLAGS="${CFLAGS}"
1338 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1339 ${realsrcdir}/configure \
1340 --enable-languages=${enable_languages-all} \
1341 --target=$target_alias --host=$build_alias --build=$build_alias
1342 CFLAGS="${saved_CFLAGS}"
1343
1344 # We just finished tests for the build machine, so rename
1345 # the file auto-build.h in the gcc directory.
1346 mv auto-host.h ../auto-build.h
1347 cd ..
1348 rm -rf $tempdir
1349 build_auto=auto-build.h
1350fi
1351AC_SUBST(build_subdir)
1352
1353tm_file="${tm_file} defaults.h"
1354tm_p_file="${tm_p_file} tm-preds.h"
1355host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1356build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1357# We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1358# put this back in temporarily.
1359xm_file="ansidecl.h ${xm_file}"
1360
1361# --------
1362# UNSORTED
1363# --------
1364
1365# Get the version trigger filename from the toplevel
1366if test "${with_gcc_version_trigger+set}" = set; then
1367 gcc_version_trigger=$with_gcc_version_trigger
1368else
1369 gcc_version_trigger=${srcdir}/version.c
1370fi
1371changequote(,)dnl
1372gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*"\([^"]*\)".*/\1/'`
1373gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1374
1375# Compile in configure arguments.
1376if test -f configargs.h ; then
1377 # Being re-configured.
1378 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1379 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1380else
1381 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1382fi
1383
1384# Double all backslashes and backslash all quotes to turn
1385# gcc_config_arguments into a C string.
1386sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1387$gcc_config_arguments
1388EOF
1389gcc_config_arguments_str=`cat conftest.out`
1390rm -f conftest.out
1391
1392cat > configargs.h <<EOF
1393/* Generated automatically. */
1394static const char configuration_arguments[] = "$gcc_config_arguments_str";
1395static const char thread_model[] = "$thread_file";
1396
1397static const struct {
1398 const char *name, *value;
1399} configure_default_options[] = $configure_default_options;
1400EOF
1401changequote([,])dnl
1402
1403# Internationalization
1404PACKAGE=gcc
1405VERSION="$gcc_version"
1406AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE",
1407 [The name of this program for internationalization purposes.])
1408AC_SUBST(PACKAGE)
1409AC_SUBST(VERSION)
1410
1411ZW_GNU_GETTEXT_SISTER_DIR
1412
1413# If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1414# -liconv on the link line twice.
1415case "$LIBINTL" in *$LIBICONV*)
1416 LIBICONV= ;;
1417esac
1418
1419# Windows32 Registry support for specifying GCC installation paths.
1420AC_ARG_ENABLE(win32-registry,
1421[ --disable-win32-registry
1422 disable lookup of installation paths in the
1423 Registry on Windows hosts
1424 --enable-win32-registry enable registry lookup (default)
1425 --enable-win32-registry=KEY
1426 use KEY instead of GCC version as the last portion
1427 of the registry key],,)
1428case $host_os in
1429 win32 | pe | cygwin* | mingw32* | uwin*)
1430AC_MSG_CHECKING(whether windows registry support is requested)
1431if test "x$enable_win32_registry" != xno; then
1432 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1433[Define to 1 if installation paths should be looked up in Windows32
1434 Registry. Ignored on non windows32 hosts.])
1435 AC_MSG_RESULT(yes)
1436 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32)
1437else
1438 AC_MSG_RESULT(no)
1439fi
1440
1441# Check if user specified a different registry key.
1442case "x${enable_win32_registry}" in
1443x | xyes)
1444 # default.
1445 gcc_cv_win32_registry_key="$VERSION"
1446 ;;
1447xno)
1448 # no registry lookup.
1449 gcc_cv_win32_registry_key=''
1450 ;;
1451*)
1452 # user-specified key.
1453 gcc_cv_win32_registry_key="$enable_win32_registry"
1454 ;;
1455esac
1456
1457if test "x$enable_win32_registry" != xno; then
1458 AC_MSG_CHECKING(registry key on windows hosts)
1459 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$gcc_cv_win32_registry_key",
1460 [Define to be the last portion of registry key on windows hosts.])
1461 AC_MSG_RESULT($gcc_cv_win32_registry_key)
1462fi
1463;;
1464esac
1465
1466# Get an absolute path to the GCC top-level source directory
1467holddir=`${PWDCMD-pwd}`
1468cd $srcdir
1469topdir=`${PWDCMD-pwd}`
1470cd $holddir
1471
1472# Conditionalize the makefile for this host machine.
1473xmake_file=
1474for f in ${host_xmake_file}
1475do
1476 if test -f ${srcdir}/config/$f
1477 then
1478 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1479 fi
1480done
1481
1482# Conditionalize the makefile for this target machine.
1483tmake_file_=
1484for f in ${tmake_file}
1485do
1486 if test -f ${srcdir}/config/$f
1487 then
1488 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1489 fi
1490done
1491tmake_file="${tmake_file_}"
1492
1493symbolic_link='ln -s'
1494
1495# If the host doesn't support symlinks, modify CC in
1496# FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1497# Otherwise, we can use "CC=$(CC)".
1498rm -f symtest.tem
1499if $symbolic_link $srcdir/gcc.c symtest.tem 2>/dev/null
1500then
1501 cc_set_by_configure="\$(CC)"
1502 quoted_cc_set_by_configure="\$(CC)"
1503 stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1504 quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1505else
1506 rm -f symtest.tem
1507 if cp -p $srcdir/gcc.c symtest.tem 2>/dev/null
1508 then
1509 symbolic_link="cp -p"
1510 else
1511 symbolic_link="cp"
1512 fi
1513 cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
1514 quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
1515 stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
1516 quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`"
1517fi
1518rm -f symtest.tem
1519
1520out_object_file=`basename $out_file .c`.o
1521
1522tm_file_list=
1523tm_include_list=
1524for f in $tm_file; do
1525 case $f in
1526 defaults.h )
1527 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1528 tm_include_list="${tm_include_list} $f"
1529 ;;
1530 * )
1531 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1532 tm_include_list="${tm_include_list} config/$f"
1533 ;;
1534 esac
1535done
1536
1537tm_p_file_list=
1538tm_p_include_list=
1539for f in $tm_p_file; do
1540 case $f in
1541 tm-preds.h )
1542 tm_p_file_list="${tm_p_file_list} $f"
1543 tm_p_include_list="${tm_p_include_list} $f"
1544 ;;
1545 * )
1546 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1547 tm_p_include_list="${tm_p_include_list} config/$f"
1548 esac
1549done
1550
1551xm_file_list=
1552xm_include_list=
1553for f in $xm_file; do
1554 case $f in
1555 ansidecl.h )
1556 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1557 xm_include_list="${xm_include_list} $f"
1558 ;;
1559 auto-host.h )
1560 xm_file_list="${xm_file_list} $f"
1561 xm_include_list="${xm_include_list} $f"
1562 ;;
1563 * )
1564 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1565 xm_include_list="${xm_include_list} config/$f"
1566 ;;
1567 esac
1568done
1569
1570host_xm_file_list=
1571host_xm_include_list=
1572for f in $host_xm_file; do
1573 case $f in
1574 ansidecl.h )
1575 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1576 host_xm_include_list="${host_xm_include_list} $f"
1577 ;;
1578 auto-host.h )
1579 host_xm_file_list="${host_xm_file_list} $f"
1580 host_xm_include_list="${host_xm_include_list} $f"
1581 ;;
1582 * )
1583 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1584 host_xm_include_list="${host_xm_include_list} config/$f"
1585 ;;
1586 esac
1587done
1588
1589build_xm_file_list=
1590for f in $build_xm_file; do
1591 case $f in
1592 ansidecl.h )
1593 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1594 build_xm_include_list="${build_xm_include_list} $f"
1595 ;;
1596 auto-build.h | auto-host.h )
1597 build_xm_file_list="${build_xm_file_list} $f"
1598 build_xm_include_list="${build_xm_include_list} $f"
1599 ;;
1600 * )
1601 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1602 build_xm_include_list="${build_xm_include_list} config/$f"
1603 ;;
1604 esac
1605done
1606
1607# Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
1608# Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1609CROSS= AC_SUBST(CROSS)
1610ALL=all.internal AC_SUBST(ALL)
1611SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1612if test x$host != x$target
1613then
1614 CROSS="-DCROSS_COMPILE"
1615 ALL=all.cross
1616 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1617 case "$host","$target" in
1618 # Darwin crosses can use the host system's libraries and headers,
1619 # because of the fat library support. Of course, it must be the
1620 # same version of Darwin on both sides. Allow the user to
1621 # just say --target=foo-darwin without a version number to mean
1622 # "the version on this system".
1623 *-*-darwin*,*-*-darwin*)
1624 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1625 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1626 if test $hostos = $targetos -o $targetos = darwin ; then
1627 CROSS=
1628 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1629 with_headers=yes
1630 fi
1631 ;;
1632
1633 i?86-*-*,x86_64-*-* \
1634 | powerpc*-*-*,powerpc64*-*-*)
1635 CROSS="$CROSS -DNATIVE_CROSS" ;;
1636 esac
1637elif test "x$TARGET_SYSTEM_ROOT" != x; then
1638 # This is just $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)
1639 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1640fi
1641
1642# If this is a cross-compiler that does not
1643# have its own set of headers then define
1644# inhibit_libc
1645
1646# If this is using newlib, without having the headers available now,
1647# then define inhibit_libc in LIBGCC2_CFLAGS.
1648# This prevents libgcc2 from containing any code which requires libc
1649# support.
1650inhibit_libc=
1651if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1652 test x$with_newlib = xyes ; } &&
1653 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1654 inhibit_libc=-Dinhibit_libc
1655fi
1656AC_SUBST(inhibit_libc)
1657
1658# When building gcc with a cross-compiler, we need to adjust things so
1659# that the generator programs are still built with the native compiler.
1660# Also, we cannot run fixincludes or fix-header.
1661
1662# These are the normal (build=host) settings:
1663CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1664BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1665STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1666
1667# Possibly disable fixproto, on a per-target basis.
1668case ${use_fixproto} in
1669 no)
1670 STMP_FIXPROTO=
1671 ;;
1672 yes)
1673 STMP_FIXPROTO=stmp-fixproto
1674 ;;
1675esac
1676AC_SUBST(STMP_FIXPROTO)
1677
1678# And these apply if build != host, or we are generating coverage data
1679if test x$build != x$host || test "x$coverage_flags" != x
1680then
1681 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1682
1683 if test "x$TARGET_SYSTEM_ROOT" = x; then
1684 STMP_FIXINC=
1685 STMP_FIXPROTO=
1686 fi
1687fi
1688
1689# When bootstrapping from the toplevel, only run fixincludes during stage1
1690if test -d ../prev-gcc
1691then
1692 STMP_FIXINC=
1693 cp -R ../prev-gcc/include include
1694fi
1695
1696# Expand extra_headers to include complete path.
1697# This substitutes for lots of t-* files.
1698extra_headers_list=
1699# Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1700for file in ${extra_headers} ; do
1701 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1702done
1703
1704# Define collect2 in Makefile.
1705case $host_can_use_collect2 in
1706 no) collect2= ;;
1707 *) collect2='collect2$(exeext)' ;;
1708esac
1709AC_SUBST([collect2])
1710
1711# Add a definition of USE_COLLECT2 if system wants one.
1712case $use_collect2 in
1713 no) use_collect2= ;;
1714 "") ;;
1715 *)
1716 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1717 xm_defines="${xm_defines} USE_COLLECT2"
1718 case $host_can_use_collect2 in
1719 no)
1720 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1721 ;;
1722 esac
1723 ;;
1724esac
1725
1726# ---------------------------
1727# Assembler & linker features
1728# ---------------------------
1729
1730# Identify the assembler which will work hand-in-glove with the newly
1731# built GCC, so that we can examine its features. This is the assembler
1732# which will be driven by the driver program.
1733#
1734# If build != host, and we aren't building gas in-tree, we identify a
1735# build->target assembler and hope that it will have the same features
1736# as the host->target assembler we'll be using.
1737AC_MSG_CHECKING(what assembler to use)
1738in_tree_gas=no
1739gcc_cv_as=
1740gcc_cv_gas_major_version=
1741gcc_cv_gas_minor_version=
1742gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1743if test -x "$DEFAULT_ASSEMBLER"; then
1744 gcc_cv_as="$DEFAULT_ASSEMBLER"
1745elif test -x as$host_exeext; then
1746 # Build using assembler in the current directory.
1747 gcc_cv_as=./as$host_exeext
1748elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1749 && test -f ../gas/Makefile \
1750 && test x$build = x$host; then
1751 # Single tree build which includes gas. We want to prefer it
1752 # over whatever linker top-level may have detected, since
1753 # we'll use what we're building after installation anyway.
1754 in_tree_gas=yes
1755 _gcc_COMPUTE_GAS_VERSION
1756 rm -f as$host_exeext
1757 $symbolic_link ../gas/as-new$host_exeext as$host_exeext 2>/dev/null
1758 in_tree_gas_is_elf=no
1759 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1760 || (grep 'obj_format = multi' ../gas/Makefile \
1761 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1762 then
1763 in_tree_gas_is_elf=yes
1764 fi
1765m4_pattern_allow([AS_FOR_TARGET])dnl
1766elif test -x "$AS_FOR_TARGET"; then
1767 gcc_cv_as="$AS_FOR_TARGET"
1768elif test -x "$AS" && test x$host = x$target; then
1769 gcc_cv_as="$AS"
1770fi
1771
1772if test "x$gcc_cv_as" = x; then
1773 # Search the same directories that the installed compiler will
1774 # search. Else we may find the wrong assembler and lose. If we
1775 # do not find a suitable assembler binary, then try the user's
1776 # path.
1777 #
1778 # Also note we have to check MD_EXEC_PREFIX before checking the
1779 # user's path. Unfortunately, there is no good way to get at the
1780 # value of MD_EXEC_PREFIX here. So we do a brute force search
1781 # through all the known MD_EXEC_PREFIX values. Ugh. This needs
1782 # to be fixed as part of the make/configure rewrite too.
1783
1784 if test "x$exec_prefix" = xNONE; then
1785 if test "x$prefix" = xNONE; then
1786 test_prefix=/usr/local
1787 else
1788 test_prefix=$prefix
1789 fi
1790 else
1791 test_prefix=$exec_prefix
1792 fi
1793
1794 # If the loop below does not find an assembler, then use whatever
1795 # one we can find in the users's path.
1796 # user's path.
1797 if test "x$program_prefix" != xNONE; then
1798 gcc_cv_as=${program_prefix}as$host_exeext
1799 else
1800 gcc_cv_as=`echo as | sed "${program_transform_name}"`$host_exeext
1801 fi
1802
1803 test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \
1804 $test_prefix/libexec/gcc/$target_noncanonical \
1805 /usr/lib/gcc/$target_noncanonical/$gcc_version \
1806 /usr/lib/gcc/$target_noncanonical \
1807 $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \
1808 $test_prefix/$target_noncanonical/bin"
1809
1810 if test x$host = x$target; then
1811 test_dirs="$test_dirs \
1812 /usr/libexec \
1813 /usr/ccs/gcc \
1814 /usr/ccs/bin \
1815 /udk/usr/ccs/bin \
1816 /bsd43/usr/lib/cmplrs/cc \
1817 /usr/cross64/usr/bin \
1818 /usr/lib/cmplrs/cc \
1819 /sysv/usr/lib/cmplrs/cc \
1820 /svr4/usr/lib/cmplrs/cc \
1821 /usr/bin"
1822 fi
1823
1824 for dir in $test_dirs; do
1825 if test -x $dir/as$host_exeext; then
1826 gcc_cv_as=$dir/as$host_exeext
1827 break;
1828 fi
1829 done
1830fi
1831case $in_tree_gas in
1832 yes)
1833 AC_MSG_RESULT("newly built gas")
1834 ;;
1835 no)
1836 AC_MSG_RESULT($gcc_cv_as)
1837 ;;
1838esac
1839
1840# Identify the linker which will work hand-in-glove with the newly
1841# built GCC, so that we can examine its features. This is the linker
1842# which will be driven by the driver program.
1843#
1844# If build != host, and we aren't building gas in-tree, we identify a
1845# build->target linker and hope that it will have the same features
1846# as the host->target linker we'll be using.
1847AC_MSG_CHECKING(what linker to use)
1848in_tree_ld=no
1849gcc_cv_ld=
1850gcc_cv_gld_major_version=
1851gcc_cv_gld_minor_version=
1852gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1853gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1854if test -x "$DEFAULT_LINKER"; then
1855 gcc_cv_ld="$DEFAULT_LINKER"
1856elif test -x collect-ld$host_exeext; then
1857 # Build using linker in the current directory.
1858 gcc_cv_ld=./collect-ld$host_exeext
1859elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1860 && test -f ../ld/Makefile \
1861 && test x$build = x$host; then
1862 # Single tree build which includes ld. We want to prefer it
1863 # over whatever linker top-level may have detected, since
1864 # we'll use what we're building after installation anyway.
1865 in_tree_ld=yes
1866 in_tree_ld_is_elf=no
1867 if (grep 'EMUL = .*elf' ../ld/Makefile \
1868 || grep 'EMUL = .*linux' ../ld/Makefile \
1869 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1870 in_tree_ld_is_elf=yes
1871 fi
1872 for f in $gcc_cv_ld_bfd_srcdir/configure $gcc_cv_ld_gld_srcdir/configure $gcc_cv_ld_gld_srcdir/configure.in $gcc_cv_ld_gld_srcdir/Makefile.in
1873 do
1874changequote(,)dnl
1875 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1876changequote([,])dnl
1877 if test x$gcc_cv_gld_version != x; then
1878 break
1879 fi
1880 done
1881changequote(,)dnl
1882 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1883 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1884changequote([,])dnl
1885 rm -f collect-ld$host_exeext
1886 $symbolic_link ../ld/ld-new$host_exeext collect-ld$host_exeext \
1887 2>/dev/null
1888elif test -x "$LD_FOR_TARGET"; then
1889 gcc_cv_ld="$LD_FOR_TARGET"
1890elif test -x "$LD" && test x$host = x$target; then
1891 gcc_cv_ld="$LD"
1892fi
1893
1894if test "x$gcc_cv_ld" = x; then
1895 # Search the same directories that the installed compiler will
1896 # search. Else we may find the wrong linker and lose. If we
1897 # do not find a suitable linker binary, then try the user's
1898 # path.
1899 #
1900 # Also note we have to check MD_EXEC_PREFIX before checking the
1901 # user's path. Unfortunately, there is no good way to get at the
1902 # value of MD_EXEC_PREFIX here. So we do a brute force search
1903 # through all the known MD_EXEC_PREFIX values. Ugh. This needs
1904 # to be fixed as part of the make/configure rewrite too.
1905
1906 if test "x$exec_prefix" = xNONE; then
1907 if test "x$prefix" = xNONE; then
1908 test_prefix=/usr/local
1909 else
1910 test_prefix=$prefix
1911 fi
1912 else
1913 test_prefix=$exec_prefix
1914 fi
1915
1916 # If the loop below does not find an linker, then use whatever
1917 # one we can find in the users's path.
1918 # user's path.
1919 if test "x$program_prefix" != xNONE; then
1920 gcc_cv_ld=${program_prefix}ld$host_exeext
1921 else
1922 gcc_cv_ld=`echo ld | sed "${program_transform_name}"`$host_exeext
1923 fi
1924
1925 test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \
1926 $test_prefix/libexec/gcc/$target_noncanonical \
1927 /usr/lib/gcc/$target_noncanonical/$gcc_version \
1928 /usr/lib/gcc/$target_noncanonical \
1929 $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \
1930 $test_prefix/$target_noncanonical/bin"
1931
1932 if test x$host = x$target; then
1933 test_dirs="$test_dirs \
1934 /usr/libexec \
1935 /usr/ccs/gcc \
1936 /usr/ccs/bin \
1937 /udk/usr/ccs/bin \
1938 /bsd43/usr/lib/cmplrs/cc \
1939 /usr/cross64/usr/bin \
1940 /usr/lib/cmplrs/cc \
1941 /sysv/usr/lib/cmplrs/cc \
1942 /svr4/usr/lib/cmplrs/cc \
1943 /usr/bin"
1944 fi
1945
1946 for dir in $test_dirs; do
1947 if test -x $dir/ld$host_exeext; then
1948 gcc_cv_ld=$dir/ld$host_exeext
1949 break;
1950 fi
1951 done
1952fi
1953case $in_tree_ld in
1954 yes)
1955 AC_MSG_RESULT("newly built ld")
1956 ;;
1957 no)
1958 AC_MSG_RESULT($gcc_cv_ld)
1959 ;;
1960esac
1961
1962# Figure out what nm we will be using.
1963gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1964AC_MSG_CHECKING(what nm to use)
1965in_tree_nm=no
1966if test -x nm$host_exeext; then
1967 gcc_cv_nm=./nm$host_exeext
1968elif test -f $gcc_cv_binutils_srcdir/configure.in \
1969 && test -f ../binutils/Makefile; then
1970 # Single tree build which includes binutils.
1971 in_tree_nm=yes
1972 gcc_cv_nm=./nm$host_exeext
1973 rm -f nm$host_exeext
1974 $symbolic_link ../binutils/nm-new$host_exeext nm$host_exeext 2>/dev/null
1975elif test "x$program_prefix" != xNONE; then
1976 gcc_cv_nm=${program_prefix}nm$host_exeext
1977else
1978 gcc_cv_nm=`echo nm | sed "${program_transform_name}"`$host_exeext
1979fi
1980case $in_tree_nm in
1981 yes) AC_MSG_RESULT("newly built nm") ;;
1982 no) AC_MSG_RESULT($gcc_cv_nm) ;;
1983esac
1984
1985# Figure out what objdump we will be using.
1986AC_MSG_CHECKING(what objdump to use)
1987in_tree_objdump=no
1988if test -x objdump$host_exeext; then
1989 gcc_cv_objdump=./objdump$host_exeext
1990elif test -f $gcc_cv_binutils_srcdir/configure.in \
1991 && test -f ../binutils/Makefile; then
1992 # Single tree build which includes binutils.
1993 in_tree_objdump=yes
1994 gcc_cv_objdump=./objdump$host_exeext
1995 rm -f objdump$host_exeext
1996 $symbolic_link ../binutils/objdump$host_exeext \
1997 objdump$host_exeext 2>/dev/null
1998elif test "x$program_prefix" != xNONE; then
1999 gcc_cv_objdump=${program_prefix}objdump$host_exeext
2000else
2001 gcc_cv_objdump=`echo objdump | \
2002 sed "${program_transform_name}"`$host_exeext
2003fi
2004case $in_tree_objdump in
2005 yes) AC_MSG_RESULT("newly built objdump") ;;
2006 no) AC_MSG_RESULT($gcc_cv_objdump) ;;
2007esac
2008
2009# Figure out what assembler alignment features are present.
2010gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2011 [2,6,0],,
2012[.balign 4
2013.p2align 2],,
2014[AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2015 [Define if your assembler supports .balign and .p2align.])])
2016
2017gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2018 [2,8,0],,
2019 [.p2align 4,,7],,
2020[AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2021 [Define if your assembler supports specifying the maximum number
2022 of bytes to skip when using the GAS .p2align command.])])
2023
2024gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2025 [elf,2,9,0],,
2026 [conftest_label1: .word 0
2027.subsection -1
2028conftest_label2: .word 0
2029.previous],
2030 [if test x$gcc_cv_nm != x; then
2031 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2032 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2033 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2034 then :
2035 else gcc_cv_as_subsection_m1=yes
2036 fi
2037 rm -f conftest.nm1 conftest.nm2
2038 fi],
2039 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2040 [Define if your assembler supports .subsection and .subsection -1 starts
2041 emitting at the beginning of your section.])])
2042
2043gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2044 [2,2,0],,
2045 [ .weak foobar],,
2046[AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2047
2048# .hidden needs to be supported in both the assembler and the linker,
2049# because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2050# This is irritatingly difficult to feature test for; we have to check the
2051# date string after the version number. If we've got an in-tree
2052# ld, we don't know its patchlevel version, so we set the baseline at 2.13
2053# to be safe.
2054# The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2055gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2056 [elf,2,13,0],,
2057[ .hidden foobar
2058foobar:])
2059
2060AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2061[if test $in_tree_ld = yes ; then
2062 gcc_cv_ld_hidden=no
2063 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2064 && test $in_tree_ld_is_elf = yes; then
2065 gcc_cv_ld_hidden=yes
2066 fi
2067else
2068 gcc_cv_ld_hidden=yes
2069 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2070 if echo "$ld_ver" | grep GNU > /dev/null; then
2071changequote(,)dnl
2072 ld_vers=`echo $ld_ver | sed -n \
2073 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2074 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2075 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2076 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2077 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2078 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p'`
2079 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2080 if test 0"$ld_date" -lt 20020404; then
2081 if test -n "$ld_date"; then
2082 # If there was date string, but was earlier than 2002-04-04, fail
2083 gcc_cv_ld_hidden=no
2084 elif test -z "$ld_vers"; then
2085 # If there was no date string nor ld version number, something is wrong
2086 gcc_cv_ld_hidden=no
2087 else
2088 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2089 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2090 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2091 test -z "$ld_vers_patch" && ld_vers_patch=0
2092 if test "$ld_vers_major" -lt 2; then
2093 gcc_cv_ld_hidden=no
2094 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2095 gcc_cv_ld_hidden="no"
2096 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2097 gcc_cv_ld_hidden=no
2098 fi
2099 fi
2100changequote([,])dnl
2101 fi
2102 else
2103 case "${target}" in
2104 hppa64*-*-hpux* | ia64*-*-hpux*)
2105 gcc_cv_ld_hidden=yes
2106 ;;
2107 *)
2108 gcc_cv_ld_hidden=no
2109 ;;
2110 esac
2111 fi
2112fi])
2113libgcc_visibility=no
2114AC_SUBST(libgcc_visibility)
2115if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2116 libgcc_visibility=yes
2117 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2118 [Define if your assembler and linker support .hidden.])
2119fi
2120
2121# Check if we have .[us]leb128, and support symbol arithmetic with it.
2122gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2123 [elf,2,11,0],,
2124[ .data
2125 .uleb128 L2 - L1
2126L1:
2127 .uleb128 1280
2128 .sleb128 -1010
2129L2:],
2130 [# GAS versions before 2.11 do not support uleb128,
2131 # despite appearing to.
2132 # ??? There exists an elf-specific test that will crash
2133 # the assembler. Perhaps it's better to figure out whether
2134 # arbitrary sections are supported and try the test.
2135 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2136 if echo "$as_ver" | grep GNU > /dev/null; then
2137changequote(,)dnl
2138 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2139 as_major=`echo $as_ver | sed 's/\..*//'`
2140 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2141changequote([,])dnl
2142 if test $as_major -eq 2 && test $as_minor -lt 11
2143 then :
2144 else gcc_cv_as_leb128=yes
2145 fi
2146 fi],
2147 [AC_DEFINE(HAVE_AS_LEB128, 1,
2148 [Define if your assembler supports .sleb128 and .uleb128.])])
2149
2150# GAS versions up to and including 2.11.0 may mis-optimize
2151# .eh_frame data.
2152gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2153 [elf,2,12,0],,
2154[ .text
2155.LFB1:
2156 .4byte 0
2157.L1:
2158 .4byte 0
2159.LFE1:
2160 .section .eh_frame,"aw",@progbits
2161__FRAME_BEGIN__:
2162 .4byte .LECIE1-.LSCIE1
2163.LSCIE1:
2164 .4byte 0x0
2165 .byte 0x1
2166 .ascii "z\0"
2167 .byte 0x1
2168 .byte 0x78
2169 .byte 0x1a
2170 .byte 0x0
2171 .byte 0x4
2172 .4byte 1
2173 .p2align 1
2174.LECIE1:
2175.LSFDE1:
2176 .4byte .LEFDE1-.LASFDE1
2177.LASFDE1:
2178 .4byte .LASFDE1-__FRAME_BEGIN__
2179 .4byte .LFB1
2180 .4byte .LFE1-.LFB1
2181 .byte 0x4
2182 .4byte .LFE1-.LFB1
2183 .byte 0x4
2184 .4byte .L1-.LFB1
2185.LEFDE1:],
2186[ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2187cat > conftest.lit <<EOF
2188 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2189 0010 01000000 12000000 18000000 00000000 ................
2190 0020 08000000 04080000 0044 .........D @&t@
2191EOF
2192cat > conftest.big <<EOF
2193 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2194 0010 00000001 00000012 00000018 00000000 ................
2195 0020 00000008 04000000 0844 .........D @&t@
2196EOF
2197 # If the assembler didn't choke, and we can objdump,
2198 # and we got the correct data, then succeed.
2199 if test x$gcc_cv_objdump != x \
2200 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2201 | tail -3 > conftest.got \
2202 && { cmp conftest.lit conftest.got > /dev/null 2>&1 \
2203 || cmp conftest.big conftest.got > /dev/null 2>&1; }
2204 then
2205 gcc_cv_as_eh_frame=yes
2206 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2207 gcc_cv_as_eh_frame=buggy
2208 else
2209 # Uh oh, what do we do now?
2210 gcc_cv_as_eh_frame=no
2211 fi])
2212
2213if test $gcc_cv_as_eh_frame = buggy; then
2214 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2215 [Define if your assembler mis-optimizes .eh_frame data.])
2216fi
2217
2218gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2219 [elf,2,12,0], [--fatal-warnings],
2220 [.section .rodata.str, "aMS", @progbits, 1])
2221if test $gcc_cv_as_shf_merge = no; then
2222 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2223 [elf,2,12,0], [--fatal-warnings],
2224 [.section .rodata.str, "aMS", %progbits, 1])
2225fi
2226AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2227 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2228[Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2229
2230gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2231 [elf,2,15,91], [--fatal-warnings],
2232 [.section .text,"axG",@progbits,.foo,comdat])
2233if test $gcc_cv_as_comdat_group = yes; then
2234 gcc_cv_as_comdat_group_percent=no
2235else
2236 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2237 [elf,2,15,91], [--fatal-warnings],
2238 [.section .text,"axG",%progbits,.foo,comdat])
2239fi
2240AC_DEFINE_UNQUOTED(HAVE_GAS_COMDAT_GROUP,
2241 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2242[Define 0/1 if your assembler supports COMDAT group.])
2243
2244# Thread-local storage - the check is heavily parametrized.
2245conftest_s=
2246tls_first_major=
2247tls_first_minor=
2248tls_as_opt=
2249case "$target" in
2250changequote(,)dnl
2251 alpha*-*-*)
2252 conftest_s='
2253 .section ".tdata","awT",@progbits
2254foo: .long 25
2255 .text
2256 ldq $27,__tls_get_addr($29) !literal!1
2257 lda $16,foo($29) !tlsgd!1
2258 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2259 ldq $27,__tls_get_addr($29) !literal!2
2260 lda $16,foo($29) !tlsldm!2
2261 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2262 ldq $1,foo($29) !gotdtprel
2263 ldah $2,foo($29) !dtprelhi
2264 lda $3,foo($2) !dtprello
2265 lda $4,foo($29) !dtprel
2266 ldq $1,foo($29) !gottprel
2267 ldah $2,foo($29) !tprelhi
2268 lda $3,foo($2) !tprello
2269 lda $4,foo($29) !tprel'
2270 tls_first_major=2
2271 tls_first_minor=13
2272 tls_as_opt=--fatal-warnings
2273 ;;
2274 i[34567]86-*-*)
2275 conftest_s='
2276 .section ".tdata","awT",@progbits
2277foo: .long 25
2278 .text
2279 movl %gs:0, %eax
2280 leal foo@TLSGD(,%ebx,1), %eax
2281 leal foo@TLSLDM(%ebx), %eax
2282 leal foo@DTPOFF(%eax), %edx
2283 movl foo@GOTTPOFF(%ebx), %eax
2284 subl foo@GOTTPOFF(%ebx), %eax
2285 addl foo@GOTNTPOFF(%ebx), %eax
2286 movl foo@INDNTPOFF, %eax
2287 movl $foo@TPOFF, %eax
2288 subl $foo@TPOFF, %eax
2289 leal foo@NTPOFF(%ecx), %eax'
2290 tls_first_major=2
2291 tls_first_minor=14
2292 tls_as_opt=--fatal-warnings
2293 ;;
2294 x86_64-*-*)
2295 conftest_s='
2296 .section ".tdata","awT",@progbits
2297foo: .long 25
2298 .text
2299 movq %fs:0, %rax
2300 leaq foo@TLSGD(%rip), %rdi
2301 leaq foo@TLSLD(%rip), %rdi
2302 leaq foo@DTPOFF(%rax), %rdx
2303 movq foo@GOTTPOFF(%rip), %rax
2304 movq $foo@TPOFF, %rax'
2305 tls_first_major=2
2306 tls_first_minor=14
2307 tls_as_opt=--fatal-warnings
2308 ;;
2309 ia64-*-*)
2310 conftest_s='
2311 .section ".tdata","awT",@progbits
2312foo: data8 25
2313 .text
2314 addl r16 = @ltoff(@dtpmod(foo#)), gp
2315 addl r17 = @ltoff(@dtprel(foo#)), gp
2316 addl r18 = @ltoff(@tprel(foo#)), gp
2317 addl r19 = @dtprel(foo#), gp
2318 adds r21 = @dtprel(foo#), r13
2319 movl r23 = @dtprel(foo#)
2320 addl r20 = @tprel(foo#), gp
2321 adds r22 = @tprel(foo#), r13
2322 movl r24 = @tprel(foo#)'
2323 tls_first_major=2
2324 tls_first_minor=13
2325 tls_as_opt=--fatal-warnings
2326 ;;
2327 powerpc-*-*)
2328 conftest_s='
2329 .section ".tdata","awT",@progbits
2330 .align 2
2331ld0: .space 4
2332ld1: .space 4
2333x1: .space 4
2334x2: .space 4
2335x3: .space 4
2336 .text
2337 addi 3,31,ld0@got@tlsgd
2338 bl __tls_get_addr
2339 addi 3,31,x1@got@tlsld
2340 bl __tls_get_addr
2341 addi 9,3,x1@dtprel
2342 addis 9,3,x2@dtprel@ha
2343 addi 9,9,x2@dtprel@l
2344 lwz 9,x3@got@tprel(31)
2345 add 9,9,x@tls
2346 addi 9,2,x1@tprel
2347 addis 9,2,x2@tprel@ha
2348 addi 9,9,x2@tprel@l'
2349 tls_first_major=2
2350 tls_first_minor=14
2351 tls_as_opt="-a32 --fatal-warnings"
2352 ;;
2353 powerpc64-*-*)
2354 conftest_s='
2355 .section ".tdata","awT",@progbits
2356 .align 3
2357ld0: .space 8
2358ld1: .space 8
2359x1: .space 8
2360x2: .space 8
2361x3: .space 8
2362 .text
2363 addi 3,2,ld0@got@tlsgd
2364 bl .__tls_get_addr
2365 nop
2366 addi 3,2,ld1@toc
2367 bl .__tls_get_addr
2368 nop
2369 addi 3,2,x1@got@tlsld
2370 bl .__tls_get_addr
2371 nop
2372 addi 9,3,x1@dtprel
2373 bl .__tls_get_addr
2374 nop
2375 addis 9,3,x2@dtprel@ha
2376 addi 9,9,x2@dtprel@l
2377 bl .__tls_get_addr
2378 nop
2379 ld 9,x3@got@dtprel(2)
2380 add 9,9,3
2381 bl .__tls_get_addr
2382 nop'
2383 tls_first_major=2
2384 tls_first_minor=14
2385 tls_as_opt="-a64 --fatal-warnings"
2386 ;;
2387 s390-*-*)
2388 conftest_s='
2389 .section ".tdata","awT",@progbits
2390foo: .long 25
2391 .text
2392 .long foo@TLSGD
2393 .long foo@TLSLDM
2394 .long foo@DTPOFF
2395 .long foo@NTPOFF
2396 .long foo@GOTNTPOFF
2397 .long foo@INDNTPOFF
2398 l %r1,foo@GOTNTPOFF(%r12)
2399 l %r1,0(%r1):tls_load:foo
2400 bas %r14,0(%r1,%r13):tls_gdcall:foo
2401 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2402 tls_first_major=2
2403 tls_first_minor=14
2404 tls_as_opt="-m31 --fatal-warnings"
2405 ;;
2406 s390x-*-*)
2407 conftest_s='
2408 .section ".tdata","awT",@progbits
2409foo: .long 25
2410 .text
2411 .quad foo@TLSGD
2412 .quad foo@TLSLDM
2413 .quad foo@DTPOFF
2414 .quad foo@NTPOFF
2415 .quad foo@GOTNTPOFF
2416 lg %r1,foo@GOTNTPOFF(%r12)
2417 larl %r1,foo@INDNTPOFF
2418 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2419 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2420 tls_first_major=2
2421 tls_first_minor=14
2422 tls_as_opt="-m64 -Aesame --fatal-warnings"
2423 ;;
2424 sh-*-* | sh[34]-*-*)
2425 conftest_s='
2426 .section ".tdata","awT",@progbits
2427foo: .long 25
2428 .text
2429 .long foo@TLSGD
2430 .long foo@TLSLDM
2431 .long foo@DTPOFF
2432 .long foo@GOTTPOFF
2433 .long foo@TPOFF'
2434 tls_first_major=2
2435 tls_first_minor=13
2436 tls_as_opt=--fatal-warnings
2437 ;;
2438 sparc*-*-*)
2439 case "$target" in
2440 sparc*-sun-solaris2.*)
2441 on_solaris=yes
2442 ;;
2443 *)
2444 on_solaris=no
2445 ;;
2446 esac
2447 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2448 conftest_s='
2449 .section ".tdata",#alloc,#write,#tls
2450foo: .long 25
2451 .text
2452 sethi %tgd_hi22(foo), %o0
2453 add %o0, %tgd_lo10(foo), %o1
2454 add %l7, %o1, %o0, %tgd_add(foo)
2455 call __tls_get_addr, %tgd_call(foo)
2456 sethi %tldm_hi22(foo), %l1
2457 add %l1, %tldm_lo10(foo), %l2
2458 add %l7, %l2, %o0, %tldm_add(foo)
2459 call __tls_get_addr, %tldm_call(foo)
2460 sethi %tldo_hix22(foo), %l3
2461 xor %l3, %tldo_lox10(foo), %l4
2462 add %o0, %l4, %l5, %tldo_add(foo)
2463 sethi %tie_hi22(foo), %o3
2464 add %o3, %tie_lo10(foo), %o3
2465 ld [%l7 + %o3], %o2, %tie_ld(foo)
2466 add %g7, %o2, %o4, %tie_add(foo)
2467 sethi %tle_hix22(foo), %l1
2468 xor %l1, %tle_lox10(foo), %o5
2469 ld [%g7 + %o5], %o1'
2470 tls_first_major=0
2471 tls_first_minor=0
2472 else
2473 conftest_s='
2474 .section ".tdata","awT",@progbits
2475foo: .long 25
2476 .text
2477 sethi %tgd_hi22(foo), %o0
2478 add %o0, %tgd_lo10(foo), %o1
2479 add %l7, %o1, %o0, %tgd_add(foo)
2480 call __tls_get_addr, %tgd_call(foo)
2481 sethi %tldm_hi22(foo), %l1
2482 add %l1, %tldm_lo10(foo), %l2
2483 add %l7, %l2, %o0, %tldm_add(foo)
2484 call __tls_get_addr, %tldm_call(foo)
2485 sethi %tldo_hix22(foo), %l3
2486 xor %l3, %tldo_lox10(foo), %l4
2487 add %o0, %l4, %l5, %tldo_add(foo)
2488 sethi %tie_hi22(foo), %o3
2489 add %o3, %tie_lo10(foo), %o3
2490 ld [%l7 + %o3], %o2, %tie_ld(foo)
2491 add %g7, %o2, %o4, %tie_add(foo)
2492 sethi %tle_hix22(foo), %l1
2493 xor %l1, %tle_lox10(foo), %o5
2494 ld [%g7 + %o5], %o1'
2495 tls_first_major=2
2496 tls_first_minor=14
2497 tls_as_opt="-32 --fatal-warnings"
2498 fi
2499 ;;
2500changequote([,])dnl
2501esac
2502if test -z "$tls_first_major"; then
2503 : # If we don't have a check, assume no support.
2504else
2505 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2506 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2507 [AC_DEFINE(HAVE_AS_TLS, 1,
2508 [Define if your assembler supports thread-local storage.])])
2509fi
2510
2511# Target-specific assembler checks.
2512
2513if test x"$demangler_in_ld" = xyes; then
2514 AC_MSG_CHECKING(linker --demangle support)
2515 gcc_cv_ld_demangle=no
2516 if test $in_tree_ld = yes; then
2517 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2518 gcc_cv_ld_demangle=yes
2519 fi
2520 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2521 # Check if the GNU linker supports --demangle option
2522 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2523 gcc_cv_ld_demangle=yes
2524 fi
2525 fi
2526 if test x"$gcc_cv_ld_demangle" = xyes; then
2527 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2528[Define if your linker supports --demangle option.])
2529 fi
2530 AC_MSG_RESULT($gcc_cv_ld_demangle)
2531fi
2532
2533case "$target" in
2534 # All TARGET_ABI_OSF targets.
2535 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2536 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2537 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2538[ .set nomacro
2539 .text
2540 extbl $3, $2, $3 !lituse_bytoff!1
2541 ldq $2, a($29) !literal!1
2542 ldq $4, b($29) !literal!2
2543 ldq_u $3, 0($2) !lituse_base!1
2544 ldq $27, f($29) !literal!5
2545 jsr $26, ($27), f !lituse_jsr!5
2546 ldah $29, 0($26) !gpdisp!3
2547 lda $0, c($29) !gprel
2548 ldah $1, d($29) !gprelhigh
2549 lda $1, d($1) !gprellow
2550 lda $29, 0($29) !gpdisp!3],,
2551 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2552 [Define if your assembler supports explicit relocations.])])
2553 ;;
2554
2555 cris-*-*)
2556 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2557 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2558 [-no-mul-bug-abort], [.text],,
2559 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2560 [Define if your assembler supports the -no-mul-bug-abort option.])])
2561 ;;
2562
2563 sparc*-*-*)
2564 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2565 [.register %g2, #scratch],,
2566 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2567 [Define if your assembler supports .register.])])
2568
2569 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2570 [-relax], [.text],,
2571 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2572 [Define if your assembler supports -relax option.])])
2573
2574 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2575 gcc_cv_as_sparc_ua_pcrel,,
2576 [-K PIC],
2577[.text
2578foo:
2579 nop
2580.data
2581.align 4
2582.byte 0
2583.uaword %r_disp32(foo)],
2584 [if test x$gcc_cv_ld != x \
2585 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2586 gcc_cv_as_sparc_ua_pcrel=yes
2587 fi
2588 rm -f conftest],
2589 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2590 [Define if your assembler and linker support unaligned PC relative relocs.])
2591
2592 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2593 gcc_cv_as_sparc_ua_pcrel_hidden,,
2594 [-K PIC],
2595[.data
2596.align 4
2597.byte 0x31
2598.uaword %r_disp32(foo)
2599.byte 0x32, 0x33, 0x34
2600.global foo
2601.hidden foo
2602foo:
2603.skip 4],
2604 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2605 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2606 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2607 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2608 if $gcc_cv_objdump -R conftest 2> /dev/null \
2609 | grep 'DISP32' > /dev/null 2>&1; then
2610 :
2611 else
2612 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2613 fi
2614 fi
2615 rm -f conftest],
2616 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2617 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2618 ]) # unaligned pcrel relocs
2619
2620 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2621 gcc_cv_as_sparc_offsetable_lo10,,
2622 [-xarch=v9],
2623[.text
2624 or %g1, %lo(ab) + 12, %g1
2625 or %g1, %lo(ab + 12), %g1],
2626 [if test x$gcc_cv_objdump != x \
2627 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2628 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2629 gcc_cv_as_offsetable_lo10=yes
2630 fi],
2631 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2632 [Define if your assembler supports offsetable %lo().])])
2633 ;;
2634
2635changequote(,)dnl
2636 i[34567]86-*-* | x86_64-*-*)
2637changequote([,])dnl
2638 case $target_os in
2639 cygwin* | pe | mingw32*)
2640 # Used for DWARF 2 in PE
2641 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2642 gcc_cv_as_ix86_pe_secrel32,
2643 [2,15,91],,
2644[.text
2645foo: nop
2646.data
2647 .secrel32 foo],
2648 [if test x$gcc_cv_ld != x \
2649 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2650 gcc_cv_as_ix86_pe_secrel32=yes
2651 fi
2652 rm -f conftest],
2653 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2654 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2655 ;;
2656 esac
2657
2658 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2659 gcc_cv_as_ix86_filds_fists,
2660 [2,9,0],, [filds mem; fists mem],,
2661 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2662 [Define if your assembler uses the new HImode fild and fist notation.])])
2663
2664 gcc_GAS_CHECK_FEATURE([cmov syntax],
2665 gcc_cv_as_ix86_cmov_sun_syntax,,,
2666 [cmovl.l %edx, %eax],,
2667 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2668 [Define if your assembler supports the Sun syntax for cmov.])])
2669
2670 # This one is used unconditionally by i386.[ch]; it is to be defined
2671 # to 1 if the feature is present, 0 otherwise.
2672 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2673 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2674[ .text
2675.L0:
2676 nop
2677 .data
2678 .long .L0@GOTOFF])
2679 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2680 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2681 [Define true if the assembler supports '.long foo@GOTOFF'.])
2682 ;;
2683
2684 ia64*-*-*)
2685 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2686 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2687[ .text
2688 addl r15 = @ltoffx(x#), gp
2689 ;;
2690 ld8.mov r16 = [[r15]], x#],,
2691 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2692 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2693
2694 ;;
2695
2696 powerpc*-*-*)
2697 case $target in
2698 *-*-aix*) conftest_s=' .csect .text[[PR]]
2699 mfcr 3,128';;
2700 *-*-darwin*) conftest_s=' .text
2701 mfcr r3,128';;
2702 *) conftest_s=' .text
2703 mfcr 3,128';;
2704 esac
2705
2706 gcc_GAS_CHECK_FEATURE([mfcr field support],
2707 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2708 [$conftest_s],,
2709 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2710 [Define if your assembler supports mfcr field.])])
2711 ;;
2712
2713 mips*-*-*)
2714 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2715 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2716[ lw $4,%gp_rel(foo)($4)],,
2717 [if test x$target_cpu_default = x
2718 then target_cpu_default=MASK_EXPLICIT_RELOCS
2719 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2720 fi])
2721
2722 if test x$gas_flag = xyes \
2723 || test x"$host" != x"$build" \
2724 || test ! -x "$gcc_cv_as" \
2725 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
2726 :
2727 else
2728 echo "*** This configuration requires the GNU assembler" >&2
2729 exit 1
2730 fi
2731 ;;
2732esac
2733# ??? Not all targets support dwarf2 debug_line, even within a version
2734# of gas. Moreover, we need to emit a valid instruction to trigger any
2735# info to the output file. So, as supported targets are added to gas 2.11,
2736# add some instruction here to (also) show we expect this might work.
2737# ??? Once 2.11 is released, probably need to add first known working
2738# version to the per-target configury.
2739case "$target" in
2740 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
2741 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
2742 | xstormy16*-*-* | cris-*-* | xtensa-*-*)
2743 insn="nop"
2744 ;;
2745 ia64*-*-* | s390*-*-*)
2746 insn="nop 0"
2747 ;;
2748 mmix-*-*)
2749 insn="swym 0"
2750 ;;
2751esac
2752if test x"$insn" != x; then
2753 conftest_s="\
2754 .file 1 \"conftest.s\"
2755 .loc 1 3 0
2756 $insn"
2757 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
2758 gcc_cv_as_dwarf2_debug_line,
2759 [elf,2,11,0],, [$conftest_s],
2760 [# ??? This fails with non-gnu grep. Maybe use objdump?
2761 if grep debug_line conftest.o > /dev/null 2>&1; then
2762 gcc_cv_as_dwarf2_debug_line=yes
2763 fi])
2764
2765# The .debug_line file table must be in the exact order that
2766# we specified the files, since these indices are also used
2767# by DW_AT_decl_file. Approximate this test by testing if
2768# the assembler bitches if the same index is assigned twice.
2769 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
2770 gcc_cv_as_dwarf2_file_buggy,,,
2771[ .file 1 "foo.s"
2772 .file 1 "bar.s"])
2773
2774 if test $gcc_cv_as_dwarf2_debug_line = yes \
2775 && test $gcc_cv_as_dwarf2_file_buggy = no; then
2776 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
2777 [Define if your assembler supports dwarf2 .file/.loc directives,
2778 and preserves file table indices exactly as given.])
2779 fi
2780
2781 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
2782 gcc_cv_as_gdwarf2_flag,
2783 [elf,2,11,0], [--gdwarf2], [$insn],,
2784 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
2785[Define if your assembler supports the --gdwarf2 option.])])
2786
2787 gcc_GAS_CHECK_FEATURE([--gstabs option],
2788 gcc_cv_as_gstabs_flag,
2789 [elf,2,11,0], [--gstabs], [$insn],
2790 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
2791 # and warns about it, but still exits successfully. So check for
2792 # this.
2793 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
2794 then :
2795 else gcc_cv_as_gstabs_flag=yes
2796 fi],
2797 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
2798[Define if your assembler supports the --gstabs option.])])
2799fi
2800
2801AC_MSG_CHECKING(linker read-only and read-write section mixing)
2802gcc_cv_ld_ro_rw_mix=unknown
2803if test $in_tree_ld = yes ; then
2804 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2805 && test $in_tree_ld_is_elf = yes; then
2806 gcc_cv_ld_ro_rw_mix=read-write
2807 fi
2808elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2809 echo '.section myfoosect, "a"' > conftest1.s
2810 echo '.section myfoosect, "aw"' > conftest2.s
2811 echo '.byte 1' >> conftest2.s
2812 echo '.section myfoosect, "a"' > conftest3.s
2813 echo '.byte 0' >> conftest3.s
2814 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2815 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2816 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2817 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2818 conftest2.o conftest3.o > /dev/null 2>&1; then
2819 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2820 | sed -e '/myfoosect/!d' -e N`
2821 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2822 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2823 gcc_cv_ld_ro_rw_mix=read-only
2824 else
2825 gcc_cv_ld_ro_rw_mix=read-write
2826 fi
2827 fi
2828 fi
2829changequote(,)dnl
2830 rm -f conftest.* conftest[123].*
2831changequote([,])dnl
2832fi
2833if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2834 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2835 [Define if your linker links a mix of read-only
2836 and read-write sections into a read-write section.])
2837fi
2838AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2839
2840AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
2841gcc_cv_ld_eh_frame_hdr=no
2842if test $in_tree_ld = yes ; then
2843 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
2844 && test $in_tree_ld_is_elf = yes; then
2845 gcc_cv_ld_eh_frame_hdr=yes
2846 fi
2847elif test x$gcc_cv_ld != x; then
2848 # Check if linker supports --eh-frame-hdr option
2849 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
2850 gcc_cv_ld_eh_frame_hdr=yes
2851 fi
2852fi
2853if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
2854 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
2855[Define if your linker supports --eh-frame-hdr option.])
2856fi
2857AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
2858
2859AC_MSG_CHECKING(linker position independent executable support)
2860gcc_cv_ld_pie=no
2861if test $in_tree_ld = yes ; then
2862 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
2863 && test $in_tree_ld_is_elf = yes; then
2864 gcc_cv_ld_pie=yes
2865 fi
2866elif test x$gcc_cv_ld != x; then
2867 # Check if linker supports -pie option
2868 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
2869 gcc_cv_ld_pie=yes
2870 fi
2871fi
2872if test x"$gcc_cv_ld_pie" = xyes; then
2873 AC_DEFINE(HAVE_LD_PIE, 1,
2874[Define if your linker supports -pie option.])
2875fi
2876AC_MSG_RESULT($gcc_cv_ld_pie)
2877
2878# --------
2879# UNSORTED
2880# --------
2881
2882AC_CACHE_CHECK(linker --as-needed support,
2883gcc_cv_ld_as_needed,
2884[gcc_cv_ld_as_needed=no
2885if test $in_tree_ld = yes ; then
2886 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2887 && test $in_tree_ld_is_elf = yes; then
2888 gcc_cv_ld_as_needed=yes
2889 fi
2890elif test x$gcc_cv_ld != x; then
2891 # Check if linker supports --as-needed and --no-as-needed options
2892 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
2893 gcc_cv_ld_as_needed=yes
2894 fi
2895fi
2896])
2897if test x"$gcc_cv_ld_as_needed" = xyes; then
2898 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
2899[Define if your linker supports --as-needed and --no-as-needed options.])
2900fi
2901
2902case "$target" in
2903 powerpc64*-*-linux*)
2904 AC_CACHE_CHECK(linker support for omitting dot symbols,
2905 gcc_cv_ld_no_dot_syms,
2906 [gcc_cv_ld_no_dot_syms=no
2907 if test $in_tree_ld = yes ; then
2908 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
2909 gcc_cv_ld_no_dot_syms=yes
2910 fi
2911 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
2912 cat > conftest1.s <<EOF
2913 .text
2914 bl .foo
2915EOF
2916 cat > conftest2.s <<EOF
2917 .section ".opd","aw"
2918 .align 3
2919 .globl foo
2920 .type foo,@function
2921foo:
2922 .quad .LEfoo,.TOC.@tocbase,0
2923 .text
2924.LEfoo:
2925 blr
2926 .size foo,.-.LEfoo
2927EOF
2928 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
2929 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
2930 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
2931 gcc_cv_ld_no_dot_syms=yes
2932 fi
2933 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
2934 fi
2935 ])
2936 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
2937 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
2938 [Define if your PowerPC64 linker only needs function descriptor syms.])
2939 fi
2940 ;;
2941esac
2942
2943if test x$with_sysroot = x && test x$host = x$target \
2944 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
2945 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
2946[Define to PREFIX/include if cpp should also search that directory.])
2947fi
2948
2949# Find out what GC implementation we want, or may, use.
2950AC_ARG_WITH(gc,
2951[ --with-gc={page,zone} choose the garbage collection mechanism to use
2952 with the compiler],
2953[case "$withval" in
2954 page | zone)
2955 GGC=ggc-$withval
2956 ;;
2957 *)
2958 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
2959 ;;
2960esac],
2961[GGC=ggc-page])
2962AC_SUBST(GGC)
2963echo "Using $GGC for garbage collection."
2964
2965# Use the system's zlib library.
2966zlibdir=-L../zlib
2967zlibinc="-I\$(srcdir)/../zlib"
2968AC_ARG_WITH(system-zlib,
2969[ --with-system-zlib use installed libz],
2970zlibdir=
2971zlibinc=
2972)
2973AC_SUBST(zlibdir)
2974AC_SUBST(zlibinc)
2975
2976dnl Very limited version of automake's enable-maintainer-mode
2977
2978AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
2979 dnl maintainer-mode is disabled by default
2980 AC_ARG_ENABLE(maintainer-mode,
2981[ --enable-maintainer-mode
2982 enable make rules and dependencies not useful
2983 (and sometimes confusing) to the casual installer],
2984 maintainer_mode=$enableval,
2985 maintainer_mode=no)
2986
2987AC_MSG_RESULT($maintainer_mode)
2988
2989if test "$maintainer_mode" = "yes"; then
2990 MAINT=''
2991else
2992 MAINT='#'
2993fi
2994AC_SUBST(MAINT)dnl
2995
2996# --------------
2997# Language hooks
2998# --------------
2999
3000# Make empty files to contain the specs and options for each language.
3001# Then add #include lines to for a compiler that has specs and/or options.
3002
3003lang_opt_files=
3004lang_specs_files=
3005lang_tree_files=
3006for subdir in . $subdirs
3007do
3008 if test -f $srcdir/$subdir/lang.opt; then
3009 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3010 fi
3011 if test -f $srcdir/$subdir/lang-specs.h; then
3012 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3013 fi
3014 if test -f $srcdir/$subdir/$subdir-tree.def; then
3015 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3016 fi
3017done
3018
3019# These (without "all_") are set in each config-lang.in.
3020# `language' must be a single word so is spelled singularly.
3021all_languages=
3022all_boot_languages=
3023all_compilers=
3024all_stagestuff=
3025all_outputs='Makefile gccbug mklibgcc mkheaders libada-mk'
3026# List of language makefile fragments.
3027all_lang_makefrags=
3028# List of language subdirectory makefiles. Deprecated.
3029all_lang_makefiles=
3030# Files for gengtype
3031all_gtfiles="$target_gtfiles"
3032# Files for gengtype with language
3033all_gtfiles_files_langs=
3034all_gtfiles_files_files=
3035
3036# Add the language fragments.
3037# Languages are added via two mechanisms. Some information must be
3038# recorded in makefile variables, these are defined in config-lang.in.
3039# We accumulate them and plug them into the main Makefile.
3040# The other mechanism is a set of hooks for each of the main targets
3041# like `clean', `install', etc.
3042
3043language_hooks="Make-hooks"
3044
3045for s in $subdirs
3046do
3047 language=
3048 boot_language=
3049 compilers=
3050 stagestuff=
3051 outputs=
3052 gtfiles=
3053 . ${srcdir}/$s/config-lang.in
3054 if test "x$language" = x
3055 then
3056 echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
3057 exit 1
3058 fi
3059 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$s/Make-lang.in"
3060 if test -f ${srcdir}/$s/Makefile.in
3061 then all_lang_makefiles="$s/Makefile"
3062 fi
3063 all_languages="$all_languages $language"
3064 if test "x$boot_language" = xyes
3065 then
3066 all_boot_languages="$all_boot_languages $language"
3067 fi
3068 all_compilers="$all_compilers $compilers"
3069 all_stagestuff="$all_stagestuff $stagestuff"
3070 all_outputs="$all_outputs $outputs"
3071 all_gtfiles="$all_gtfiles $gtfiles"
3072 for f in $gtfiles
3073 do
3074 all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3075 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3076 done
3077done
3078
3079# Pick up gtfiles for c
3080gtfiles=
3081s="c"
3082. ${srcdir}/c-config-lang.in
3083all_gtfiles="$all_gtfiles $gtfiles"
3084for f in $gtfiles
3085do
3086 all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3087 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3088done
3089
3090check_languages=
3091for language in $all_languages
3092do
3093 check_languages="$check_languages check-$language"
3094done
3095
3096# We link each language in with a set of hooks, reached indirectly via
3097# lang.${target}.
3098
3099rm -f Make-hooks
3100touch Make-hooks
3101target_list="all.build all.cross start.encap rest.encap tags \
3102 install-normal install-common install-man \
3103 uninstall info man srcextra srcman srcinfo \
3104 mostlyclean clean distclean maintainer-clean \
3105 stage1 stage2 stage3 stage4 stageprofile stagefeedback"
3106for t in $target_list
3107do
3108 x=
3109 for lang in $all_languages
3110 do
3111 x="$x $lang.$t"
3112 done
3113 echo "lang.$t: $x" >> Make-hooks
3114done
3115
3116# --------
3117# UNSORTED
3118# --------
3119
3120# Create .gdbinit.
3121
3122echo "dir ." > .gdbinit
3123echo "dir ${srcdir}" >> .gdbinit
3124if test x$gdb_needs_out_file_path = xyes
3125then
3126 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3127fi
3128if test "x$subdirs" != x; then
3129 for s in $subdirs
3130 do
3131 echo "dir ${srcdir}/$s" >> .gdbinit
3132 done
3133fi
3134echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3135
3136# If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3137# absolute path for gcc_tooldir based on inserting the number of up-directory
3138# movements required to get from $(exec_prefix) to $(prefix) into the basic
3139# $(libsubdir)/@(unlibsubdir) based path.
3140# Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3141# make and thus we'd get different behavior depending on where we built the
3142# sources.
3143if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3144 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3145else
3146changequote(<<, >>)dnl
3147# An explanation of the sed strings:
3148# -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
3149# -e 's|/$||' match a trailing forward slash and eliminates it
3150# -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
3151# -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
3152#
3153# (*) Note this pattern overwrites the first character of the string
3154# with a forward slash if one is not already present. This is not a
3155# problem because the exact names of the sub-directories concerned is
3156# unimportant, just the number of them matters.
3157#
3158# The practical upshot of these patterns is like this:
3159#
3160# prefix exec_prefix result
3161# ------ ----------- ------
3162# /foo /foo/bar ../
3163# /foo/ /foo/bar ../
3164# /foo /foo/bar/ ../
3165# /foo/ /foo/bar/ ../
3166# /foo /foo/bar/ugg ../../
3167#
3168 dollar='$$'
3169 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3170changequote([, ])dnl
3171fi
3172AC_SUBST(gcc_tooldir)
3173AC_SUBST(dollar)
3174
3175# Find a directory in which to install a shared libgcc.
3176
3177AC_ARG_ENABLE(version-specific-runtime-libs,
3178[ --enable-version-specific-runtime-libs
3179 specify that runtime libraries should be
3180 installed in a compiler-specific directory])
3181
3182AC_ARG_WITH(slibdir,
3183[ --with-slibdir=DIR shared libraries in DIR [LIBDIR]],
3184slibdir="$with_slibdir",
3185if test "${enable_version_specific_runtime_libs+set}" = set; then
3186 slibdir='$(libsubdir)'
3187elif test "$host" != "$target"; then
3188 slibdir='$(build_tooldir)/lib'
3189else
3190 slibdir='$(libdir)'
3191fi)
3192AC_SUBST(slibdir)
3193
3194objdir=`${PWDCMD-pwd}`
3195AC_SUBST(objdir)
3196
3197# Substitute configuration variables
3198AC_SUBST(subdirs)
3199AC_SUBST(srcdir)
3200AC_SUBST(all_boot_languages)
3201AC_SUBST(all_compilers)
3202AC_SUBST(all_gtfiles)
3203AC_SUBST(all_gtfiles_files_langs)
3204AC_SUBST(all_gtfiles_files_files)
3205AC_SUBST(all_lang_makefrags)
3206AC_SUBST(all_lang_makefiles)
3207AC_SUBST(all_languages)
3208AC_SUBST(all_stagestuff)
3209AC_SUBST(build_exeext)
3210AC_SUBST(build_install_headers_dir)
3211AC_SUBST(build_xm_file_list)
3212AC_SUBST(build_xm_include_list)
3213AC_SUBST(build_xm_defines)
3214AC_SUBST(check_languages)
3215AC_SUBST(cc_set_by_configure)
3216AC_SUBST(quoted_cc_set_by_configure)
3217AC_SUBST(cpp_install_dir)
3218AC_SUBST(xmake_file)
3219AC_SUBST(tmake_file)
3220AC_SUBST(extra_gcc_objs)
3221AC_SUBST(extra_headers_list)
3222AC_SUBST(extra_objs)
3223AC_SUBST(extra_parts)
3224AC_SUBST(extra_passes)
3225AC_SUBST(extra_programs)
3226AC_SUBST(float_h_file)
3227AC_SUBST(gcc_config_arguments)
3228AC_SUBST(gcc_gxx_include_dir)
3229AC_SUBST(libstdcxx_incdir)
3230AC_SUBST(gcc_version)
3231AC_SUBST(gcc_version_full)
3232AC_SUBST(gcc_version_trigger)
3233AC_SUBST(host_exeext)
3234AC_SUBST(host_xm_file_list)
3235AC_SUBST(host_xm_include_list)
3236AC_SUBST(host_xm_defines)
3237AC_SUBST(out_host_hook_obj)
3238AC_SUBST(install)
3239AC_SUBST(lang_opt_files)
3240AC_SUBST(lang_specs_files)
3241AC_SUBST(lang_tree_files)
3242AC_SUBST(local_prefix)
3243AC_SUBST(md_file)
3244AC_SUBST(objc_boehm_gc)
3245AC_SUBST(out_file)
3246AC_SUBST(out_object_file)
3247AC_SUBST(stage_prefix_set_by_configure)
3248AC_SUBST(quoted_stage_prefix_set_by_configure)
3249AC_SUBST(symbolic_link)
3250AC_SUBST(thread_file)
3251AC_SUBST(tm_file_list)
3252AC_SUBST(tm_include_list)
3253AC_SUBST(tm_defines)
3254AC_SUBST(tm_p_file_list)
3255AC_SUBST(tm_p_include_list)
3256AC_SUBST(xm_file_list)
3257AC_SUBST(xm_include_list)
3258AC_SUBST(xm_defines)
3259AC_SUBST(c_target_objs)
3260AC_SUBST(cxx_target_objs)
3261AC_SUBST(target_cpu_default)
3262
3263AC_SUBST_FILE(language_hooks)
3264
3265# If it doesn't already exist, create document directory
3266echo "checking for the document directory." 1>&2
3267if test -d doc ; then
3268 true
3269else
3270 mkdir doc
3271fi
3272
3273# Echo link setup.
3274if test x${build} = x${host} ; then
3275 if test x${host} = x${target} ; then
3276 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3277 else
3278 echo "Links are now set up to build a cross-compiler" 1>&2
3279 echo " from ${host} to ${target}." 1>&2
3280 fi
3281else
3282 if test x${host} = x${target} ; then
3283 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3284 echo " for ${target}." 1>&2
3285 else
3286 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3287 echo " from ${host} to ${target}." 1>&2
3288 fi
3289fi
3290
3291AC_ARG_VAR(GMPLIBS,[How to link GMP])
3292AC_ARG_VAR(GMPINC,[How to find GMP include files])
3293
3294# Configure the subdirectories
3295# AC_CONFIG_SUBDIRS($subdirs)
3296
3297# Create the Makefile
3298# and configure language subdirectories
3299AC_CONFIG_FILES($all_outputs)
3300
3301AC_CONFIG_COMMANDS([default],
3302[
3303case ${CONFIG_HEADERS} in
3304 *auto-host.h:config.in*)
3305 echo > cstamp-h ;;
3306esac
3307# Make sure all the subdirs exist.
3308for d in $subdirs
3309do
3310 test -d $d || mkdir $d
3311done
3312# If the host supports symlinks, point stage[1234] at ../stage[1234] so
3313# bootstrapping and the installation procedure can still use
3314# CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks,
3315# FLAGS_TO_PASS has been modified to solve the problem there.
3316# This is virtually a duplicate of what happens in configure.lang; we do
3317# an extra check to make sure this only happens if ln -s can be used.
3318if test "$symbolic_link" = "ln -s"; then
3319 for d in ${subdirs} ; do
3320 STARTDIR=`${PWDCMD-pwd}`
3321 cd $d
3322 for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
3323 do
3324 rm -f $t
3325 $symbolic_link ../$t $t 2>/dev/null
3326 done
3327 cd $STARTDIR
3328 done
3329else true ; fi
3330],
3331[subdirs='$subdirs'
3332symbolic_link='$symbolic_link'
3333])
3334AC_OUTPUT
Mirror of https://gcc.gnu.org/git/gcc.git