summaryrefslogtreecommitdiff
path: root/ltcf-cxx.sh
blob: 48d5a53f2f7d9b919bc9bf01e8f17017330043bf (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
#### This script is meant to be sourced by ltconfig.

# ltcf-cxx.sh - Create a C++ compiler specific configuration
#
# Copyright (C) 1996-1999, 2000, 2001, 2003 Free Software Foundation, Inc.
# Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
#
# Original C++ support by:Gary V. Vaughan <gvv@techie.com>
#    Alexandre Oliva <oliva@lsd.ic.unicamp.br>
#    Ossama Othman <ossama@debian.org>
#    Thomas Thanner <tanner@gmx.de>
#
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.


# Source file extension for C++ test sources.
ac_ext=cc

# Object file extension for compiled C++ test sources.
objext=o

# Code to be used in simple compile tests
lt_simple_compile_test_code="int some_variable = 0;"

# Code to be used in simple link tests
lt_simple_link_test_code='int main(int, char *[]) { return (0); }'

# C++ compiler
CXX=${CXX-c++}

# ltmain only uses $CC for tagged configurations so make sure $CC is set.
CC=${CC-"$CXX"}
CFLAGS=${CFLAGS-"$CXXFLAGS"}

# Allow CC to be a program name with arguments.
set dummy $CC
compiler=$2
cc_basename=`$echo X"$compiler" | $Xsed -e 's%^.*/%%'`

# Check if we are using GNU gcc  (taken/adapted from configure script)
# We need to check here since "--with-gcc" is set at configure time,
# not ltconfig time!
cat > conftest.$ac_ext <<EOF
#ifdef __GNUC__
  yes;
#endif
EOF
if { ac_try='${CC-c++} -E conftest.$ac_ext'; { (eval echo \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
  with_gcc=yes

  # Set up default GNU C++ configuration

  # Check if GNU C++ uses GNU ld as the underlying linker, since the
  # archiving commands below assume that GNU ld is being used.  The
  # assumption here is that the linker is going to be the same as that
  # used by the C compiler.  For the purposes of GCC, this is ok, but
  # if someone uses g++ along with a non-GNU C compiler that doesn't
  # use GNU ld, we may lose.  This is ok for the toolchain tree, since
  # the only users of ltcf-cxx.sh are libstdc++-v3 and libjava,
  # anyway, and those use both gcc and g++, so the settings are bound
  # to be the same.

  if test "$with_gnu_ld" = yes; then
    archive_cmds='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
    archive_expsym_cmds='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'

    hardcode_libdir_flag_spec='${wl}--rpath ${wl}$libdir'
    export_dynamic_flag_spec='${wl}--export-dynamic'

    # If archive_cmds runs LD, not CC, wlarc should be empty
    # XXX I think wlarc can be eliminated in ltcf-cxx, but I need to
    #     investigate it a little bit more. (MM)
    wlarc='${wl}'

    # ancient GNU ld didn't support --whole-archive et. al.
    if eval "`$CC -print-prog-name=ld` --help 2>&1" | \
        egrep 'no-whole-archive' > /dev/null; then
      whole_archive_flag_spec="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
    else
      whole_archive_flag_spec=
    fi
  else
    wlarc=

    # A generic and very simple default shared library creation
    # command for GNU C++ for the case where it uses the native
    # linker, instead of GNU ld.  If possible, this setting should
    # overridden to take advantage of the native linker features on
    # the platform it is being used on.
    archive_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
  fi

  # Commands to make compiler produce verbose output that lists
  # what "hidden" libraries, object files and flags are used when
  # linking a shared library.
  output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"'

else
  with_gcc=no
  wlarc=
fi

# PORTME: fill in a description of your system's C++ link characteristics
case $host_os in
  aix3*)
    # FIXME: insert proper C++ library support
    ld_shlibs=no
    ;;
  aix4* | aix5*)
    archive_cmds=''
    hardcode_direct=yes
    hardcode_libdir_separator=':'
    link_all_deplibs=yes
    # When large executables or shared objects are built, AIX ld can
    # have problems creating the table of contents.  If linking a library
    # or program results in "error TOC overflow" add -mminimal-toc to
    # CXXFLAGS/CFLAGS for g++/gcc.  In the cases where that is not
    # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
    if test "$with_gcc" = yes; then
      case $host_os in aix4.[012]|aix4.[012].*)
      # We only want to do this on AIX 4.2 and lower, the check
      # below for broken collect2 doesn't work under 4.3+
        collect2name=`${CC} -print-prog-name=collect2`
        if test -f "$collect2name" && \
	   strings "$collect2name" | grep resolve_lib_name >/dev/null
        then
	  # We have reworked collect2
	  hardcode_direct=yes
        else
	  # We have old collect2
	  hardcode_direct=unsupported
	  # It fails to find uninstalled libraries when the uninstalled
	  # path is not listed in the libpath.  Setting hardcode_minus_L
	  # to unsupported forces relinking
	  hardcode_minus_L=yes
	  hardcode_libdir_flag_spec='-L$libdir'
	  hardcode_libdir_separator=
        fi
      esac
      shared_flag='-shared'
    else
      # not using gcc
      if test "$host_cpu" = ia64; then
        shared_flag='${wl}-G'
      else
        shared_flag='${wl}-bM:SRE'
      fi
    fi

    if test "$host_cpu" = ia64; then
      # On IA64, the linker does run time linking by default, so we don't
      # have to do anything special.
      aix_use_runtimelinking=no
      if test $with_gnu_ld = no; then
        exp_sym_flag='-Bexport'
        no_entry_flag=""
      fi
    else
      # Test if we are trying to use run time linking, or normal AIX style linking.
      # If -brtl is somewhere in LDFLAGS, we need to do run time linking.
      aix_use_runtimelinking=no
      for ld_flag in $LDFLAGS; do
        if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl" ); then
          aix_use_runtimelinking=yes
          break
        fi
      done
      exp_sym_flag='-bexport'
      no_entry_flag='-bnoentry'
    fi
    # It seems that -bexpall does not export symbols beginning with
    # underscore (_), so it is better to generate a list of symbols to export.
    always_export_symbols=yes
    if test "$aix_use_runtimelinking" = yes; then
      hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:/usr/lib:/lib'
      allow_undefined_flag=' -Wl,-G'
      archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs $compiler_flags ${allow_undefined_flag} '"\${wl}$no_entry_flag \${wl}-brtl \${wl}$exp_sym_flag:\$export_symbols"
     else
      if test "$host_cpu" = ia64; then
        if test $with_gnu_ld = no; then
          hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib'
          allow_undefined_flag="-z nodefs"
          archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$no_entry_flag \${wl}$exp_sym_flag:\$export_symbols"
        fi
      else
        hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:/usr/lib:/lib'
        # Warning - without using the other run time loading flags, -berok will
        #           link without error, but may produce a broken library.
        no_undefined_flag=' ${wl}-bnoerok'
        allow_undefined_flag=' ${wl}-berok'
        # -bexpall does not export symbols beginning with underscore (_)
        always_export_symbols=yes
        # Exported symbols can be pulled into shared objects from archives
        whole_archive_flag_spec=' '
        build_libtool_need_lc=yes
        # This is similar to how AIX traditionally builds it's shared libraries.
        archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs $compiler_flags ${wl}-bE:$export_symbols ${wl}-bnoentry${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
      fi
    fi
    ;;
  chorus*)
    case $cc_basename in
      *)
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
    esac
    ;;

  darwin* | rhapsody*)
    case "$host_os" in
	rhapsody* | darwin1.[[012]])
	    allow_undefined_flag='-undefined suppress'
	;;
	*) # Darwin 1.3 on
	    if test -z ${MACOSX_DEPLOYMENT_TARGET} ; then
		allow_undefined_flag='-flat_namespace -undefined suppress'
      else
	case ${MACOSX_DEPLOYMENT_TARGET} in
	    10.[[012]])
		allow_undefined_flag='-flat_namespace -undefined suppress'
	    ;;
	    10.*)
		allow_undefined_flag='-undefined dynamic_lookup'
	    ;;
	esac
    fi
    ;;
    esac
    # Disable shared library build on OS-X older than 10.3.
    case $host_os in
	darwin[1-6]*)
	    can_build_shared=no
	    ;;
	darwin7*)
	    can_build_shared=yes
	    ;;
    esac
    output_verbose_link_cmd='echo'

    archive_cmds='$CXX -dynamiclib $allow_undefined_flag -o $lib $libobjs $deplibs $compiler_flags -install_name $rpath/$soname $verstring'
    module_cmds='$CC ${wl}-bind_at_load $allow_undefined_flag -o $lib -bundle $libobjs $deplibs$compiler_flags'

    # Don't fix this by using the ld -exported_symbols_list flag,
    # it doesn't exist in older darwin ld's
    archive_expsym_cmds='sed -e "s,#.*,," -e "s,^[    ]*,," -e "s,^\(..*\),_&," < $export_symbols > $output_objdir/${libname}-symbols.expsym~$CC -r ${wl}-bind_at_load -keep_private_externs -nostdlib -o ${lib}-master.o $libobjs~$CC -dynamiclib $allow_undefined_flag -o $lib ${lib}-master.o $deplibs $compiler_flags -install_name $rpath/$soname $verstring~nmedit -s $output_objdir/${libname}-symbols.expsym ${lib}'
    module_expsym_cmds='sed -e "s,#.*,," -e "s,^[    ]*,," -e "s,^\(..*\),_&," < $export_symbols > $output_objdir/${libname}-symbols.expsym~$CC $allow_undefined_flag  -o $lib -bundle $libobjs $deplibs$compiler_flags~nmedit -s $output_objdir/${libname}-symbols.expsym ${lib}'
    hardcode_direct=no
    hardcode_automatic=yes
    hardcode_shlibpath_var=unsupported
    link_all_deplibs=yes
    ;;

  dgux*)
    case $cc_basename in
      ec++)
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
      ghcx)
        # Green Hills C++ Compiler
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
      *)
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
    esac
    ;;
  freebsd[12]*)
    # C++ shared libraries reported to be fairly broken before switch to ELF
    ld_shlibs=no
    ;;
  freebsd* | kfreebsd*-gnu)
    # FreeBSD 3 and later use GNU C++ and GNU ld with standard ELF
    # conventions
    ld_shlibs=yes
    ;;
  gnu*)
    ;;
  hpux*)
    if test $with_gnu_ld = no; then
      case "$host_cpu" in
	ia64*)
	  hardcode_libdir_flag_spec='-L$libdir'
	  hardcode_shlibpath_var=no ;;
	*)
	  hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir' ;;
      esac
      hardcode_direct=yes
      hardcode_libdir_separator=:
      export_dynamic_flag_spec='${wl}-E'
    fi
    hardcode_minus_L=yes # Not in the search PATH, but as the default
			 # location of the library.

    case $cc_basename in
      CC)
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
      aCC)
	case $host_os in
	hpux9*) archive_cmds='$rm $output_objdir/$soname~$CC -b ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib' ;;
	*) archive_cmds='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' ;;
	esac
        # Commands to make compiler produce verbose output that lists
        # what "hidden" libraries, object files and flags are used when
        # linking a shared library.
        #
        # There doesn't appear to be a way to prevent this compiler from
        # explicitly linking system object files so we need to strip them
        # from the output so that they don't get included in the library
        # dependencies.
        output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | egrep "\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list'
        ;;
      *)
        if test $with_gcc = yes; then
	  if test $with_gnu_ld = no; then
	    case "$host_os" in
	    hpux9*) archive_cmds='$rm $output_objdir/$soname~$CC -shared -nostdlib -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib' ;;
	    *)
	      case "$host_cpu" in
		ia64*)
		  archive_cmds='$LD -b +h $soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags' ;;
		*)
		  archive_cmds='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' ;;
	      esac
	      ;;
	    esac
	  fi
	else
	  # FIXME: insert proper C++ library support
          ld_shlibs=no
	fi
        ;;
    esac
    ;;
  irix5* | irix6*)
    case $cc_basename in
      CC)
        # SGI C++
        archive_cmds='$CC -shared -all -multigot $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -soname $soname `test -n "$verstring" && echo -set_version $verstring` -update_registry ${objdir}/so_locations -o $lib'

	# Archives containing C++ object files must be created using
	# "CC -ar", where "CC" is the IRIX C++ compiler.  This is
	# necessary to make sure instantiated templates are included
	# in the archive.
	old_archive_cmds='$CC -ar -WR,-u -o $oldlib $oldobjs'
	;;
      *)
        if test "$with_gcc" = yes; then
          if test "$with_gnu_ld" = no; then
            archive_cmds='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && echo ${wl}-set_version ${wl}$verstring` ${wl}-update_registry ${wl}${objdir}/so_locations -o $lib'
          else
            archive_cmds='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && echo -set_version $verstring` -o $lib'
          fi
        fi
        hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
        hardcode_libdir_separator=:
        link_all_deplibs=yes
        ;;
    esac
    ;;
  linux*)
    case $cc_basename in
      KCC)
        # Kuck and Associates, Inc. (KAI) C++ Compiler

        # KCC will only create a shared library if the output file
        # ends with ".so" (or ".sl" for HP-UX), so rename the library
        # to its proper name (with version) after linking.
        archive_cmds='templib=`echo $lib | sed -e "s/\.so\..*/\.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib'
        archive_expsym_cmds='templib=`echo $lib | sed -e "s/\.so\..*/\.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib ${wl}-retain-symbols-file,$export_symbols; mv \$templib $lib'

        # Commands to make compiler produce verbose output that lists
        # what "hidden" libraries, object files and flags are used when
        # linking a shared library.
        #
        # There doesn't appear to be a way to prevent this compiler from
        # explicitly linking system object files so we need to strip them
        # from the output so that they don't get included in the library
        # dependencies.
        output_verbose_link_cmd='templist=`$CC $CFLAGS -v conftest.$objext -o libconftest.so 2>&1 | egrep "ld"`; rm -f libconftest.so; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list'

        hardcode_libdir_flag_spec='${wl}--rpath,$libdir'
        export_dynamic_flag_spec='${wl}--export-dynamic'

	# Archives containing C++ object files must be created using
	# "CC -Bstatic", where "CC" is the KAI C++ compiler.
        old_archive_cmds='$CC -Bstatic -o $oldlib $oldobjs'
        ;;
      cxx)
        # Compaq C++
        archive_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
        archive_expsym_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname  -o $lib ${wl}-retain-symbols-file $wl$export_symbols'

        runpath_var=LD_RUN_PATH
        hardcode_libdir_flag_spec='-rpath $libdir'
        hardcode_libdir_separator=:

        # Commands to make compiler produce verbose output that lists
        # what "hidden" libraries, object files and flags are used when
        # linking a shared library.
        #
        # There doesn't appear to be a way to prevent this compiler from
        # explicitly linking system object files so we need to strip them
        # from the output so that they don't get included in the library
        # dependencies.
        output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | grep "ld"`; templist=`echo $templist | sed "s/\(^.*ld.*\)\( .*ld .*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list'
        ;;
    esac
    ;;
  lynxos*)
    # FIXME: insert proper C++ library support
    ld_shlibs=no
    ;;
  m88k*)
    # FIXME: insert proper C++ library support
    ld_shlibs=no
    ;;
  mvs*)
    case $cc_basename in
      cxx)
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
      *)
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
    esac
    ;;
  netbsd* | knetbsd*-gnu)
    # NetBSD uses g++ - do we need to do anything?
    ;;
  osf3*)
    case $cc_basename in
      KCC)
        # Kuck and Associates, Inc. (KAI) C++ Compiler

        # KCC will only create a shared library if the output file
        # ends with ".so" (or ".sl" for HP-UX), so rename the library
        # to its proper name (with version) after linking.
        archive_cmds='templib=`echo $lib | sed -e "s/\.so\..*/\.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib'

        hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
        hardcode_libdir_separator=:

	# Archives containing C++ object files must be created using
	# "CC -Bstatic", where "CC" is the KAI C++ compiler.
        old_archive_cmds='$CC -Bstatic -o $oldlib $oldobjs'

        ;;
      RCC)
        # Rational C++ 2.4.1
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
      cxx)
        allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
        archive_cmds='$CC -shared${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $soname `test -n "$verstring" && echo ${wl}-set_version $verstring` -update_registry ${objdir}/so_locations -o $lib'

        hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
        hardcode_libdir_separator=:

        # Commands to make compiler produce verbose output that lists
        # what "hidden" libraries, object files and flags are used when
        # linking a shared library.
        #
        # There doesn't appear to be a way to prevent this compiler from
        # explicitly linking system object files so we need to strip them
        # from the output so that they don't get included in the library
        # dependencies.
        output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | grep "ld" | grep -v "ld:"`; templist=`echo $templist | sed "s/\(^.*ld.*\)\( .*ld.*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list'
        ;;
      *)
	if test "$with_gcc" = yes && test "$with_gnu_ld" = no; then
	  allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
	  archive_cmds='$CC -shared -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && echo ${wl}-set_version ${wl}$verstring` ${wl}-update_registry ${wl}${objdir}/so_locations -o $lib'

	  hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
	  hardcode_libdir_separator=:

	  # Commands to make compiler produce verbose output that lists
	  # what "hidden" libraries, object files and flags are used when
	  # linking a shared library.
	  output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"'
    else
          # FIXME: insert proper C++ library support
          ld_shlibs=no
    fi
        ;;
    esac
    ;;
  osf4* | osf5*)
    case $cc_basename in
      KCC)
        # Kuck and Associates, Inc. (KAI) C++ Compiler

        # KCC will only create a shared library if the output file
        # ends with ".so" (or ".sl" for HP-UX), so rename the library
        # to its proper name (with version) after linking.
        archive_cmds='templib=`echo $lib | sed -e "s/\.so\..*/\.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib'

        hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
        hardcode_libdir_separator=:

	# Archives containing C++ object files must be created using
	# the KAI C++ compiler.
        old_archive_cmds='$CC -o $oldlib $oldobjs'
        ;;
      RCC)
        # Rational C++ 2.4.1
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
      cxx)
        allow_undefined_flag=' -expect_unresolved \*'
        archive_cmds='$CC -shared${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -msym -soname $soname `test -n "$verstring" && echo -set_version $verstring` -update_registry ${objdir}/so_locations -o $lib'
	archive_expsym_cmds='for i in `cat $export_symbols`; do printf "-exported_symbol " >> $lib.exp; echo "\$i" >> $lib.exp; done~
	  echo "-hidden">> $lib.exp~
	  $CC -shared$allow_undefined_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -msym -soname $soname -Wl,-input -Wl,$lib.exp  `test -n "$verstring" && echo -set_version	$verstring` -update_registry $objdir/so_locations -o $lib~
	  $rm $lib.exp'

        hardcode_libdir_flag_spec='-rpath $libdir'
        hardcode_libdir_separator=:

        # Commands to make compiler produce verbose output that lists
        # what "hidden" libraries, object files and flags are used when
        # linking a shared library.
        #
        # There doesn't appear to be a way to prevent this compiler from
        # explicitly linking system object files so we need to strip them
        # from the output so that they don't get included in the library
        # dependencies.
        output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | grep "ld" | grep -v "ld:"`; templist=`echo $templist | sed "s/\(^.*ld.*\)\( .*ld.*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list'
        ;;
      *)
	if test "$with_gcc" = yes && test "$with_gnu_ld" = no; then
	  allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
	  archive_cmds='$CC -shared -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && echo ${wl}-set_version ${wl}$verstring` ${wl}-update_registry ${wl}${objdir}/so_locations -o $lib'
	  
	  hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
	  hardcode_libdir_separator=:
	  
	  # Commands to make compiler produce verbose output that lists
	  # what "hidden" libraries, object files and flags are used when
	  # linking a shared library.
	  output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"'
    else
	  # FIXME: insert proper C++ library support
	  ld_shlibs=no
    fi
        ;;
    esac
    ;;
  psos*)
    # FIXME: insert proper C++ library support
    ld_shlibs=no
    ;;
  sco*)
    case $cc_basename in
      CC)
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
      *)
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
    esac
    ;;
  sunos4*)
    case $cc_basename in
      CC)
        # Sun C++ 4.x
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
      lcc)
        # Lucid
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
      *)
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
    esac
    ;;
  solaris*)
    case $cc_basename in
      CC)
	# Sun C++ 4.2, 5.x and Centerline C++
        no_undefined_flag=' -zdefs'
        archive_cmds='$CC -G${allow_undefined_flag} -nolib -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
        archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
        $CC -G${allow_undefined_flag} -nolib ${wl}-M ${wl}$lib.exp -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$rm $lib.exp'

        hardcode_libdir_flag_spec='-R$libdir'
        hardcode_shlibpath_var=no
        case $host_os in
          solaris2.[0-5] | solaris2.[0-5].*) ;;
          *)
            # The C++ compiler is used as linker so we must use $wl
            # flag to pass the commands to the underlying system
            # linker.
            # Supported since Solaris 2.6 (maybe 2.5.1?)
            whole_archive_flag_spec='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
            ;;
        esac
        link_all_deplibs=yes

        # Commands to make compiler produce verbose output that lists
        # what "hidden" libraries, object files and flags are used when
        # linking a shared library.
        #
        # There doesn't appear to be a way to prevent this compiler from
        # explicitly linking system object files so we need to strip them
        # from the output so that they don't get included in the library
        # dependencies.
        output_verbose_link_cmd='templist=`$CC -G $CFLAGS -v conftest.$objext 2>&1 | egrep "\-R|\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list'

	# Archives containing C++ object files must be created using
	# "CC -xar", where "CC" is the Sun C++ compiler.  This is
        # necessary to make sure instantiated templates are included
        # in the archive.
        old_archive_cmds='$CC -xar -o $oldlib $oldobjs'
        ;;
      gcx)
        # Green Hills C++ Compiler
        archive_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'

        # The C++ compiler must be used to create the archive.
        old_archive_cmds='$CC $LDFLAGS -archive -o $oldlib $oldobjs'
        ;;
      *)
        # GNU C++ compiler with Solaris linker
        if test "$with_gcc" = yes && test "$with_gnu_ld" = no; then
	  no_undefined_flag=' ${wl}-z ${wl}defs'
          if $CC --version | egrep -v '^2\.7' > /dev/null; then
            archive_cmds='$CC -shared -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
            archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
		$CC -shared -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$rm $lib.exp'

            # Commands to make compiler produce verbose output that lists
            # what "hidden" libraries, object files and flags are used when
            # linking a shared library.
            output_verbose_link_cmd="$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep \"\-L\""
          else
            # g++ 2.7 appears to require `-G' NOT `-shared' on this
            # platform.
            archive_cmds='$CC -G -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
            archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
		$CC -G -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$rm $lib.exp'

            # Commands to make compiler produce verbose output that lists
            # what "hidden" libraries, object files and flags are used when
            # linking a shared library.
            output_verbose_link_cmd="$CC -G $CFLAGS -v conftest.$objext 2>&1 | egrep \"\-L\""
          fi

          hardcode_libdir_flag_spec='${wl}-R $wl$libdir'
        fi
        ;;
    esac
    ;;
  tandem*)
    case $cc_basename in
      NCC)
        # NonStop-UX NCC 3.20
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
      *)
        # FIXME: insert proper C++ library support
        ld_shlibs=no
        ;;
    esac
    ;;
  tpf*)
    ld_shlibs=yes
    ;;
  unixware*)
    # FIXME: insert proper C++ library support
    ld_shlibs=no
    ;;
  vxworks*)
    # FIXME: insert proper C++ library support
    ld_shlibs=no
    ;;
  *)
    # FIXME: insert proper C++ library support
    ld_shlibs=no
    ;;
esac


## Compiler Characteristics: PIC flags, static flags, etc

# We don't use cached values here since only the C compiler
# characteristics should be cached.
ac_cv_prog_cc_pic=
ac_cv_prog_cc_shlib=
ac_cv_prog_cc_wl=
ac_cv_prog_cc_static=
ac_cv_prog_cc_no_builtin=
ac_cv_prog_cc_can_build_shared=$can_build_shared

ac_cv_prog_cc_pic_works=
ac_cv_prog_cc_static_works=

if test "$with_gcc" = yes; then
  ac_cv_prog_cc_wl='-Wl,'
  ac_cv_prog_cc_static='-static'

  case $host_os in
  aix*)
    # All AIX code is PIC.
    if test "$host_cpu" = ia64; then
      # AIX 5 now supports IA64 processor
      lt_cv_prog_cc_static='-Bstatic'
    else
      lt_cv_prog_cc_static='-bnso -bI:/lib/syscalls.exp'
    fi
    ;;
  amigaos*)
    # FIXME: we need at least 68020 code to build shared libraries, but
    # adding the `-m68020' flag to GCC prevents building anything better,
    # like `-m68040'.
    ac_cv_prog_cc_pic='-m68020 -resident32 -malways-restore-a4'
    ;;
  beos* | irix5* | irix6* | osf3* | osf4* | osf5*)
    # PIC is the default for these OSes.
    ;;
  cygwin* | mingw* | os2*)
    # This hack is so that the source file can tell whether it is being
    # built for inclusion in a dll (and should export symbols for example).
    ac_cv_prog_cc_pic='-DDLL_EXPORT'
    ;;
  darwin* | rhapsody*)
    # PIC is the default on this platform
    # Common symbols not allowed in MH_DYLIB files
    ac_cv_prog_cc_pic='-fno-common'
    ;;
  *djgpp*)
    # DJGPP does not support shared libraries at all
    ac_cv_prog_cc_pic=
    ;;
  sysv4*MP*)
    if test -d /usr/nec; then
      ac_cv_prog_cc_pic=-Kconform_pic
    fi
    ;;
  *)
    ac_cv_prog_cc_pic='-fPIC'
    ;;
  esac
else
  case $host_os in
    aix4* | aix5*)
      # All AIX code is PIC.
      if test "$host_cpu" = ia64; then
        # AIX 5 now supports IA64 processor
        lt_cv_prog_cc_static='-Bstatic'
      else
        lt_cv_prog_cc_static='-bnso -bI:/lib/syscalls.exp'
      fi
      ;;
    chorus*)
      case $cc_basename in
      cxch68)
        # Green Hills C++ Compiler
        # ac_cv_prog_cc_static="--no_auto_instantiation -u __main -u __premain -u _abort -r $COOL_DIR/lib/libOrb.a $MVME_DIR/lib/CC/libC.a $MVME_DIR/lib/classix/libcx.s.a"
        ;;
      esac
      ;;
    dgux*)
      case $cc_basename in
        ec++)
          ac_cv_prog_cc_pic='-KPIC'
          ;;
        ghcx)
          # Green Hills C++ Compiler
          ac_cv_prog_cc_pic='-pic'
          ;;
        *)
          ;;
      esac
      ;;
    freebsd* | kfreebsd*-gnu)
      # FreeBSD uses GNU C++
      ;;
    gnu*)
      ;;
    hpux9* | hpux10* | hpux11*)
      case $cc_basename in
        CC)
          ac_cv_prog_cc_wl='-Wl,'
          ac_cv_prog_cc_static="${ac_cv_prog_cc_wl}-a ${ac_cv_prog_cc_wl}archive"
          ac_cv_prog_cc_pic='+Z'
          ;;
        aCC)
          ac_cv_prog_cc_wl='-Wl,'
          ac_cv_prog_cc_static="${ac_cv_prog_cc_wl}-a ${ac_cv_prog_cc_wl}archive"
          ac_cv_prog_cc_pic='+Z'
          ;;
        *)
          ;;
      esac
      ;;
    irix5* | irix6*)
      case $cc_basename in
        CC)
          ac_cv_prog_cc_wl='-Wl,'
          ac_cv_prog_cc_static='-non_shared'
          ac_cv_prog_cc_pic='-KPIC'
          ;;
        *)
          ;;
      esac
      ;;
    linux*)
      case $cc_basename in
        KCC)
          # KAI C++ Compiler
          ac_cv_prog_cc_wl='--backend -Wl,'
          ac_cv_prog_cc_pic='-fPIC'
          ;;
        cxx)
          # Compaq C++
          # Make sure the PIC flag is empty.  It appears that all Alpha
          # Linux and Compaq Tru64 Unix objects are PIC.
          ac_cv_prog_cc_pic=
          ac_cv_prog_cc_static='-non_shared'
          ;;
        *)
          ;;
      esac
      ;;
    lynxos*)
      ;;
    m88k*)
      ;;
    mvs*)
      case $cc_basename in
        cxx)
          ac_cv_prog_cc_pic='-W c,exportall'
          ;;
        *)
          ;;
      esac
      ;;
    netbsd*)
      ;;
    osf3* | osf4* | osf5*)
      case $cc_basename in
        KCC)
          ac_cv_prog_cc_wl='--backend -Wl,'
          ;;
        RCC)
          # Rational C++ 2.4.1
          ac_cv_prog_cc_pic='-pic'
          ;;
        cxx)
          # Digital/Compaq C++
          ac_cv_prog_cc_wl='-Wl,'
          # Make sure the PIC flag is empty.  It appears that all Alpha
          # Linux and Compaq Tru64 Unix objects are PIC.
          ac_cv_prog_cc_pic=
          ac_cv_prog_cc_static='-non_shared'
          ;;
        *)
          ;;
      esac
      ;;
    psos*)
      ;;
    sco*)
      case $cc_basename in
        CC)
          ac_cv_prog_cc_pic='-fPIC'
          ;;
        *)
          ;;
      esac
      ;;
    solaris*)
      case $cc_basename in
        CC)
          # Sun C++ 4.2, 5.x and Centerline C++
          ac_cv_prog_cc_pic='-KPIC'
          ac_cv_prog_cc_static='-Bstatic'
          ac_cv_prog_cc_wl='-Qoption ld '
          ;;
        gcx)
          # Green Hills C++ Compiler
          ac_cv_prog_cc_pic='-PIC'
          ;;
        *)
          ;;
      esac
      ;;
    sunos4*)
      case $cc_basename in
        CC)
          # Sun C++ 4.x
          ac_cv_prog_cc_pic='-pic'
          ac_cv_prog_cc_static='-Bstatic'
          ;;
        lcc)
          # Lucid
          ac_cv_prog_cc_pic='-pic'
          ;;
        *)
          ;;
      esac
      ;;
    tandem*)
      case $cc_basename in
        NCC)
          # NonStop-UX NCC 3.20
          ac_cv_prog_cc_pic='-KPIC'
          ;;
        *)
          ;;
      esac
      ;;
    unixware*)
      ;;
    vxworks*)
      ;;
    *)
      ac_cv_prog_cc_can_build_shared=no
      ;;
  esac
fi

case "$host_os" in
    # Platforms which do not suport PIC and -DPIC is meaningless
    # on them:
    *djgpp*)
      ac_cv_prog_cc_pic=
      ;;
    *)
      ac_cv_prog_cc_pic="$ac_cv_prog_cc_pic -DPIC"
      ;;
esac


# Figure out "hidden" C++ library dependencies from verbose
# compiler output whening linking a shared library.
cat > conftest.$ac_ext <<EOF
class Foo
{
public:
  Foo (void) { a = 0; }
private:
  int a;
};
EOF


if (eval $ac_compile) 2>&5; then
  # Parse the compiler output and extract the necessary
  # objects, libraries and library flags.

  # Sentinel used to keep track of whether or not we are before
  # the conftest object file.
  pre_test_object_deps_done=no

  for p in `eval $output_verbose_link_cmd`; do

    case $p in

    -L* | -R* | -l*)
       # Some compilers place space between "-{L,R}" and the path.
       # Remove the space.
       if test $p = "-L" \
          || test $p = "-R"; then
         prev=$p
         continue
       else
         prev=
       fi

       if test "$pre_test_object_deps_done" = no; then
         case $p in
	 -L* | -R*)
	   # Internal compiler library paths should come after those
	   # provided the user.  The postdeps already come after the
	   # user supplied libs so there is no need to process them.
           if test -z "$compiler_lib_search_path"; then
             compiler_lib_search_path="${prev}${p}"
           else
             compiler_lib_search_path="${compiler_lib_search_path} ${prev}${p}"
           fi
           ;;
         # The "-l" case would never come before the object being
         # linked, so don't bother handling this case.
         esac
       else
         if test -z "$postdeps"; then
           postdeps="${prev}${p}"
         else
           postdeps="${postdeps} ${prev}${p}"
         fi
       fi
       ;;

    *.$objext)
       # This assumes that the test object file only shows up
       # once in the compiler output.
       if test "$p" = "conftest.$objext"; then
         pre_test_object_deps_done=yes
         continue
       fi

       if test "$pre_test_object_deps_done" = no; then
         if test -z "$predep_objects"; then
           predep_objects="$p"
         else
           predep_objects="$predep_objects $p"
         fi
       else
         if test -z "$postdep_objects"; then
           postdep_objects="$p"
         else
           postdep_objects="$postdep_objects $p"
         fi
       fi
       ;;

    *) ;; # Ignore the rest.

    esac
  done

  # Clean up.
  rm -f a.out
else
  echo "ltcf-cxx.sh: error: problem compiling test program"
fi

$rm -f confest.$objext

case " $postdeps " in
*" -lc "*) need_lc=no ;;
*) need_lc=yes ;;
esac