ltcf-cxx.sh

   1 #### This script is meant to be sourced by ltconfig.
   2
   3 # ltcf-cxx.sh - Create a C++ compiler specific configuration
   4 #
   5 # Copyright (C) 1996-1999, 2000, 2001, 2003 Free Software Foundation, Inc.
   6 # Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
   7 #
   8 # Original C++ support by:Gary V. Vaughan <gvv@techie.com>
   9 #    Alexandre Oliva <oliva@lsd.ic.unicamp.br>
  10 #    Ossama Othman <ossama@debian.org>
  11 #    Thomas Thanner <tanner@gmx.de>
  12 #
  13 # This file is free software; you can redistribute it and/or modify it
  14 # under the terms of the GNU General Public License as published by
  15 # the Free Software Foundation; either version 2 of the License, or
  16 # (at your option) any later version.
  17 #
  18 # This program is distributed in the hope that it will be useful, but
  19 # WITHOUT ANY WARRANTY; without even the implied warranty of
  20 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  21 # General Public License for more details.
  22 #
  23 # You should have received a copy of the GNU General Public License
  24 # along with this program; if not, write to the Free Software
  25 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  26 #
  27 # As a special exception to the GNU General Public License, if you
  28 # distribute this file as part of a program that contains a
  29 # configuration script generated by Autoconf, you may include it under
  30 # the same distribution terms that you use for the rest of that program.
  31
  32
  33 # Source file extension for C++ test sources.
  34 ac_ext=cc
  35
  36 # Object file extension for compiled C++ test sources.
  37 objext=o
  38
  39 # Code to be used in simple compile tests
  40 lt_simple_compile_test_code="int some_variable = 0;"
  41
  42 # Code to be used in simple link tests
  43 lt_simple_link_test_code='int main(int, char *[]) { return (0); }'
  44
  45 # C++ compiler
  46 CXX=${CXX-c++}
  47
  48 # ltmain only uses $CC for tagged configurations so make sure $CC is set.
  49 CC=${CC-"$CXX"}
  50 CFLAGS=${CFLAGS-"$CXXFLAGS"}
  51
  52 # Allow CC to be a program name with arguments.
  53 set dummy $CC
  54 compiler=$2
  55 cc_basename=`$echo X"$compiler" | $Xsed -e 's%^.*/%%'`
  56
  57 # Check if we are using GNU gcc  (taken/adapted from configure script)
  58 # We need to check here since "--with-gcc" is set at configure time,
  59 # not ltconfig time!
  60 cat > conftest.$ac_ext <<EOF
  61 #ifdef __GNUC__
  62   yes;
  63 #endif
  64 EOF
  65 if { ac_try='${CC-c++} -E conftest.$ac_ext'; { (eval echo \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
  66   with_gcc=yes
  67
  68   # Set up default GNU C++ configuration
  69
  70   # Check if GNU C++ uses GNU ld as the underlying linker, since the
  71   # archiving commands below assume that GNU ld is being used.  The
  72   # assumption here is that the linker is going to be the same as that
  73   # used by the C compiler.  For the purposes of GCC, this is ok, but
  74   # if someone uses g++ along with a non-GNU C compiler that doesn't
  75   # use GNU ld, we may lose.  This is ok for the toolchain tree, since
  76   # the only users of ltcf-cxx.sh are libstdc++-v3 and libjava,
  77   # anyway, and those use both gcc and g++, so the settings are bound
  78   # to be the same.
  79
  80   if test "$with_gnu_ld" = yes; then
  81     archive_cmds='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
  82     archive_expsym_cmds='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
  83
  84     hardcode_libdir_flag_spec='${wl}--rpath ${wl}$libdir'
  85     export_dynamic_flag_spec='${wl}--export-dynamic'
  86
  87     # If archive_cmds runs LD, not CC, wlarc should be empty
  88     # XXX I think wlarc can be eliminated in ltcf-cxx, but I need to
  89     #     investigate it a little bit more. (MM)
  90     wlarc='${wl}'
  91
  92     # ancient GNU ld didn't support --whole-archive et. al.
  93     if eval "`$CC -print-prog-name=ld` --help 2>&1" | \
  94         egrep 'no-whole-archive' > /dev/null; then
  95       whole_archive_flag_spec="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
  96     else
  97       whole_archive_flag_spec=
  98     fi
  99   else
 100     wlarc=
 101
 102     # A generic and very simple default shared library creation
 103     # command for GNU C++ for the case where it uses the native
 104     # linker, instead of GNU ld.  If possible, this setting should
 105     # overridden to take advantage of the native linker features on
 106     # the platform it is being used on.
 107     archive_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
 108   fi
 109
 110   # Commands to make compiler produce verbose output that lists
 111   # what "hidden" libraries, object files and flags are used when
 112   # linking a shared library.
 113   output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"'
 114
 115 else
 116   with_gcc=no
 117   wlarc=
 118 fi
 119
 120 # PORTME: fill in a description of your system's C++ link characteristics
 121 case $host_os in
 122   aix3*)
 123     # FIXME: insert proper C++ library support
 124     ld_shlibs=no
 125     ;;
 126   aix4* | aix5*)
 127     archive_cmds=''
 128     hardcode_direct=yes
 129     hardcode_libdir_separator=':'
 130     link_all_deplibs=yes
 131     # When large executables or shared objects are built, AIX ld can
 132     # have problems creating the table of contents.  If linking a library
 133     # or program results in "error TOC overflow" add -mminimal-toc to
 134     # CXXFLAGS/CFLAGS for g++/gcc.  In the cases where that is not
 135     # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
 136     if test "$with_gcc" = yes; then
 137       case $host_os in aix4.[012]|aix4.[012].*)
 138       # We only want to do this on AIX 4.2 and lower, the check
 139       # below for broken collect2 doesn't work under 4.3+
 140         collect2name=`${CC} -print-prog-name=collect2`
 141         if test -f "$collect2name" && \
 142            strings "$collect2name" | grep resolve_lib_name >/dev/null
 143         then
 144           # We have reworked collect2
 145           hardcode_direct=yes
 146         else
 147           # We have old collect2
 148           hardcode_direct=unsupported
 149           # It fails to find uninstalled libraries when the uninstalled
 150           # path is not listed in the libpath.  Setting hardcode_minus_L
 151           # to unsupported forces relinking
 152           hardcode_minus_L=yes
 153           hardcode_libdir_flag_spec='-L$libdir'
 154           hardcode_libdir_separator=
 155         fi
 156       esac
 157       shared_flag='-shared'
 158     else
 159       # not using gcc
 160       if test "$host_cpu" = ia64; then
 161         shared_flag='${wl}-G'
 162       else
 163         shared_flag='${wl}-bM:SRE'
 164       fi
 165     fi
 166
 167     if test "$host_cpu" = ia64; then
 168       # On IA64, the linker does run time linking by default, so we don't
 169       # have to do anything special.
 170       aix_use_runtimelinking=no
 171       if test $with_gnu_ld = no; then
 172         exp_sym_flag='-Bexport'
 173         no_entry_flag=""
 174       fi
 175     else
 176       # Test if we are trying to use run time linking, or normal AIX style linking.
 177       # If -brtl is somewhere in LDFLAGS, we need to do run time linking.
 178       aix_use_runtimelinking=no
 179       for ld_flag in $LDFLAGS; do
 180         if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl" ); then
 181           aix_use_runtimelinking=yes
 182           break
 183         fi
 184       done
 185       exp_sym_flag='-bexport'
 186       no_entry_flag='-bnoentry'
 187     fi
 188     # It seems that -bexpall does not export symbols beginning with
 189     # underscore (_), so it is better to generate a list of symbols to export.
 190     always_export_symbols=yes
 191     if test "$aix_use_runtimelinking" = yes; then
 192       hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:/usr/lib:/lib'
 193       allow_undefined_flag=' -Wl,-G'
 194       archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs $compiler_flags ${allow_undefined_flag} '"\${wl}$no_entry_flag \${wl}-brtl \${wl}$exp_sym_flag:\$export_symbols"
 195      else
 196       if test "$host_cpu" = ia64; then
 197         if test $with_gnu_ld = no; then
 198           hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib'
 199           allow_undefined_flag="-z nodefs"
 200           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"
 201         fi
 202       else
 203         hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:/usr/lib:/lib'
 204         # Warning - without using the other run time loading flags, -berok will
 205         #           link without error, but may produce a broken library.
 206         no_undefined_flag=' ${wl}-bnoerok'
 207         allow_undefined_flag=' ${wl}-berok'
 208         # -bexpall does not export symbols beginning with underscore (_)
 209         always_export_symbols=yes
 210         # Exported symbols can be pulled into shared objects from archives
 211         whole_archive_flag_spec=' '
 212         build_libtool_need_lc=yes
 213         # This is similar to how AIX traditionally builds it's shared libraries.
 214         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'
 215       fi
 216     fi
 217     ;;
 218   chorus*)
 219     case $cc_basename in
 220       *)
 221         # FIXME: insert proper C++ library support
 222         ld_shlibs=no
 223         ;;
 224     esac
 225     ;;
 226   dgux*)
 227     case $cc_basename in
 228       ec++)
 229         # FIXME: insert proper C++ library support
 230         ld_shlibs=no
 231         ;;
 232       ghcx)
 233         # Green Hills C++ Compiler
 234         # FIXME: insert proper C++ library support
 235         ld_shlibs=no
 236         ;;
 237       *)
 238         # FIXME: insert proper C++ library support
 239         ld_shlibs=no
 240         ;;
 241     esac
 242     ;;
 243   freebsd[12]*)
 244     # C++ shared libraries reported to be fairly broken before switch to ELF
 245     ld_shlibs=no
 246     ;;
 247   freebsd* | kfreebsd*-gnu)
 248     # FreeBSD 3 and later use GNU C++ and GNU ld with standard ELF
 249     # conventions
 250     ld_shlibs=yes
 251     ;;
 252   gnu*)
 253     ;;
 254   hpux*)
 255     if test $with_gnu_ld = no; then
 256       case "$host_cpu" in
 257         ia64*)
 258           hardcode_libdir_flag_spec='-L$libdir'
 259           hardcode_shlibpath_var=no ;;
 260         *)
 261           hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir' ;;
 262       esac
 263       hardcode_direct=yes
 264       hardcode_libdir_separator=:
 265       export_dynamic_flag_spec='${wl}-E'
 266     fi
 267     hardcode_minus_L=yes # Not in the search PATH, but as the default
 268                          # location of the library.
 269
 270     case $cc_basename in
 271       CC)
 272         # FIXME: insert proper C++ library support
 273         ld_shlibs=no
 274         ;;
 275       aCC)
 276         case $host_os in
 277         hpux9*) archive_cmds='$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 $lib' ;;
 278         *) archive_cmds='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' ;;
 279         esac
 280         # Commands to make compiler produce verbose output that lists
 281         # what "hidden" libraries, object files and flags are used when
 282         # linking a shared library.
 283         #
 284         # There doesn't appear to be a way to prevent this compiler from
 285         # explicitly linking system object files so we need to strip them
 286         # from the output so that they don't get included in the library
 287         # dependencies.
 288         output_verbose_link_cmd='templist=`($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'
 289         ;;
 290       *)
 291         if test $with_gcc = yes; then
 292           if test $with_gnu_ld = no; then
 293             case "$host_os" in
 294             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 $lib' ;;
 295             *)
 296               case "$host_cpu" in
 297                 ia64*)
 298                   archive_cmds='$LD -b +h $soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags' ;;
 299                 *)
 300                   archive_cmds='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' ;;
 301               esac
 302               ;;
 303             esac
 304           fi
 305         else
 306           # FIXME: insert proper C++ library support
 307           ld_shlibs=no
 308         fi
 309         ;;
 310     esac
 311     ;;
 312   irix5* | irix6*)
 313     case $cc_basename in
 314       CC)
 315         # SGI C++
 316         archive_cmds='$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 $lib'
 317
 318         # Archives containing C++ object files must be created using
 319         # "CC -ar", where "CC" is the IRIX C++ compiler.  This is
 320         # necessary to make sure instantiated templates are included
 321         # in the archive.
 322         old_archive_cmds='$CC -ar -WR,-u -o $oldlib $oldobjs'
 323         ;;
 324       *)
 325         if test "$with_gcc" = yes; then
 326           if test "$with_gnu_ld" = no; then
 327             archive_cmds='$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 $lib'
 328           else
 329             archive_cmds='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -soname $soname `test -n "$verstring" && echo -set_version $verstring` -o $lib'
 330           fi
 331         fi
 332         hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 333         hardcode_libdir_separator=:
 334         link_all_deplibs=yes
 335         ;;
 336     esac
 337     ;;
 338   linux*)
 339     case $cc_basename in
 340       KCC)
 341         # Kuck and Associates, Inc. (KAI) C++ Compiler
 342
 343         # KCC will only create a shared library if the output file
 344         # ends with ".so" (or ".sl" for HP-UX), so rename the library
 345         # to its proper name (with version) after linking.
 346         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'
 347         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 $lib'
 348
 349         # Commands to make compiler produce verbose output that lists
 350         # what "hidden" libraries, object files and flags are used when
 351         # linking a shared library.
 352         #
 353         # There doesn't appear to be a way to prevent this compiler from
 354         # explicitly linking system object files so we need to strip them
 355         # from the output so that they don't get included in the library
 356         # dependencies.
 357         output_verbose_link_cmd='templist=`$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 $list'
 358
 359         hardcode_libdir_flag_spec='${wl}--rpath,$libdir'
 360         export_dynamic_flag_spec='${wl}--export-dynamic'
 361
 362         # Archives containing C++ object files must be created using
 363         # "CC -Bstatic", where "CC" is the KAI C++ compiler.
 364         old_archive_cmds='$CC -Bstatic -o $oldlib $oldobjs'
 365         ;;
 366       cxx)
 367         # Compaq C++
 368         archive_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
 369         archive_expsym_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname  -o $lib ${wl}-retain-symbols-file $wl$export_symbols'
 370
 371         runpath_var=LD_RUN_PATH
 372         hardcode_libdir_flag_spec='-rpath $libdir'
 373         hardcode_libdir_separator=:
 374
 375         # Commands to make compiler produce verbose output that lists
 376         # what "hidden" libraries, object files and flags are used when
 377         # linking a shared library.
 378         #
 379         # There doesn't appear to be a way to prevent this compiler from
 380         # explicitly linking system object files so we need to strip them
 381         # from the output so that they don't get included in the library
 382         # dependencies.
 383         output_verbose_link_cmd='templist=`$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'
 384         ;;
 385     esac
 386     ;;
 387   lynxos*)
 388     # FIXME: insert proper C++ library support
 389     ld_shlibs=no
 390     ;;
 391   m88k*)
 392     # FIXME: insert proper C++ library support
 393     ld_shlibs=no
 394     ;;
 395   mvs*)
 396     case $cc_basename in
 397       cxx)
 398         # FIXME: insert proper C++ library support
 399         ld_shlibs=no
 400         ;;
 401       *)
 402         # FIXME: insert proper C++ library support
 403         ld_shlibs=no
 404         ;;
 405     esac
 406     ;;
 407   netbsd* | knetbsd*-gnu)
 408     # NetBSD uses g++ - do we need to do anything?
 409     ;;
 410   osf3*)
 411     case $cc_basename in
 412       KCC)
 413         # Kuck and Associates, Inc. (KAI) C++ Compiler
 414
 415         # KCC will only create a shared library if the output file
 416         # ends with ".so" (or ".sl" for HP-UX), so rename the library
 417         # to its proper name (with version) after linking.
 418         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 $lib'
 419
 420         hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
 421         hardcode_libdir_separator=:
 422
 423         # Archives containing C++ object files must be created using
 424         # "CC -Bstatic", where "CC" is the KAI C++ compiler.
 425         old_archive_cmds='$CC -Bstatic -o $oldlib $oldobjs'
 426
 427         ;;
 428       RCC)
 429         # Rational C++ 2.4.1
 430         # FIXME: insert proper C++ library support
 431         ld_shlibs=no
 432         ;;
 433       cxx)
 434         allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 435         archive_cmds='$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 $lib'
 436
 437         hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 438         hardcode_libdir_separator=:
 439
 440         # Commands to make compiler produce verbose output that lists
 441         # what "hidden" libraries, object files and flags are used when
 442         # linking a shared library.
 443         #
 444         # There doesn't appear to be a way to prevent this compiler from
 445         # explicitly linking system object files so we need to strip them
 446         # from the output so that they don't get included in the library
 447         # dependencies.
 448         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 $list'
 449         ;;
 450       *)
 451         if test "$with_gcc" = yes && test "$with_gnu_ld" = no; then
 452           allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 453           archive_cmds='$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 $lib'
 454
 455           hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 456           hardcode_libdir_separator=:
 457
 458           # Commands to make compiler produce verbose output that lists
 459           # what "hidden" libraries, object files and flags are used when
 460           # linking a shared library.
 461           output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"'
 462     else
 463           # FIXME: insert proper C++ library support
 464           ld_shlibs=no
 465     fi
 466         ;;
 467     esac
 468     ;;
 469   osf4* | osf5*)
 470     case $cc_basename in
 471       KCC)
 472         # Kuck and Associates, Inc. (KAI) C++ Compiler
 473
 474         # KCC will only create a shared library if the output file
 475         # ends with ".so" (or ".sl" for HP-UX), so rename the library
 476         # to its proper name (with version) after linking.
 477         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 $lib'
 478
 479         hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
 480         hardcode_libdir_separator=:
 481
 482         # Archives containing C++ object files must be created using
 483         # the KAI C++ compiler.
 484         old_archive_cmds='$CC -o $oldlib $oldobjs'
 485         ;;
 486       RCC)
 487         # Rational C++ 2.4.1
 488         # FIXME: insert proper C++ library support
 489         ld_shlibs=no
 490         ;;
 491       cxx)
 492         allow_undefined_flag=' -expect_unresolved \*'
 493         archive_cmds='$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'
 494         archive_expsym_cmds='for i in `cat $export_symbols`; do printf "-exported_symbol " >> $lib.exp; echo "\$i" >> $lib.exp; done~
 495           echo "-hidden">> $lib.exp~
 496           $CC -shared$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~
 497           $rm $lib.exp'
 498
 499         hardcode_libdir_flag_spec='-rpath $libdir'
 500         hardcode_libdir_separator=:
 501
 502         # Commands to make compiler produce verbose output that lists
 503         # what "hidden" libraries, object files and flags are used when
 504         # linking a shared library.
 505         #
 506         # There doesn't appear to be a way to prevent this compiler from
 507         # explicitly linking system object files so we need to strip them
 508         # from the output so that they don't get included in the library
 509         # dependencies.
 510         output_verbose_link_cmd='templist=`$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 $list'
 511         ;;
 512       *)
 513         if test "$with_gcc" = yes && test "$with_gnu_ld" = no; then
 514           allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 515           archive_cmds='$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 $lib'
 516
 517           hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 518           hardcode_libdir_separator=:
 519
 520           # Commands to make compiler produce verbose output that lists
 521           # what "hidden" libraries, object files and flags are used when
 522           # linking a shared library.
 523           output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"'
 524     else
 525           # FIXME: insert proper C++ library support
 526           ld_shlibs=no
 527     fi
 528         ;;
 529     esac
 530     ;;
 531   psos*)
 532     # FIXME: insert proper C++ library support
 533     ld_shlibs=no
 534     ;;
 535   sco*)
 536     case $cc_basename in
 537       CC)
 538         # FIXME: insert proper C++ library support
 539         ld_shlibs=no
 540         ;;
 541       *)
 542         # FIXME: insert proper C++ library support
 543         ld_shlibs=no
 544         ;;
 545     esac
 546     ;;
 547   sunos4*)
 548     case $cc_basename in
 549       CC)
 550         # Sun C++ 4.x
 551         # FIXME: insert proper C++ library support
 552         ld_shlibs=no
 553         ;;
 554       lcc)
 555         # Lucid
 556         # FIXME: insert proper C++ library support
 557         ld_shlibs=no
 558         ;;
 559       *)
 560         # FIXME: insert proper C++ library support
 561         ld_shlibs=no
 562         ;;
 563     esac
 564     ;;
 565   solaris*)
 566     case $cc_basename in
 567       CC)
 568         # Sun C++ 4.2, 5.x and Centerline C++
 569         no_undefined_flag=' -zdefs'
 570         archive_cmds='$CC -G${allow_undefined_flag} -nolib -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
 571         archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 572         $CC -G${allow_undefined_flag} -nolib ${wl}-M ${wl}$lib.exp -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$rm $lib.exp'
 573
 574         hardcode_libdir_flag_spec='-R$libdir'
 575         hardcode_shlibpath_var=no
 576         case $host_os in
 577           solaris2.[0-5] | solaris2.[0-5].*) ;;
 578           *)
 579             # The C++ compiler is used as linker so we must use $wl
 580             # flag to pass the commands to the underlying system
 581             # linker.
 582             # Supported since Solaris 2.6 (maybe 2.5.1?)
 583             whole_archive_flag_spec='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
 584             ;;
 585         esac
 586         link_all_deplibs=yes
 587
 588         # Commands to make compiler produce verbose output that lists
 589         # what "hidden" libraries, object files and flags are used when
 590         # linking a shared library.
 591         #
 592         # There doesn't appear to be a way to prevent this compiler from
 593         # explicitly linking system object files so we need to strip them
 594         # from the output so that they don't get included in the library
 595         # dependencies.
 596         output_verbose_link_cmd='templist=`$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 $list'
 597
 598         # Archives containing C++ object files must be created using
 599         # "CC -xar", where "CC" is the Sun C++ compiler.  This is
 600         # necessary to make sure instantiated templates are included
 601         # in the archive.
 602         old_archive_cmds='$CC -xar -o $oldlib $oldobjs'
 603         ;;
 604       gcx)
 605         # Green Hills C++ Compiler
 606         archive_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
 607
 608         # The C++ compiler must be used to create the archive.
 609         old_archive_cmds='$CC $LDFLAGS -archive -o $oldlib $oldobjs'
 610         ;;
 611       *)
 612         # GNU C++ compiler with Solaris linker
 613         if test "$with_gcc" = yes && test "$with_gnu_ld" = no; then
 614           no_undefined_flag=' ${wl}-z ${wl}defs'
 615           if $CC --version | egrep -v '^2\.7' > /dev/null; then
 616             archive_cmds='$CC -shared -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
 617             archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 618                 $CC -shared -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$rm $lib.exp'
 619
 620             # Commands to make compiler produce verbose output that lists
 621             # what "hidden" libraries, object files and flags are used when
 622             # linking a shared library.
 623             output_verbose_link_cmd="$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep \"\-L\""
 624           else
 625             # g++ 2.7 appears to require `-G' NOT `-shared' on this
 626             # platform.
 627             archive_cmds='$CC -G -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
 628             archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 629                 $CC -G -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$rm $lib.exp'
 630
 631             # Commands to make compiler produce verbose output that lists
 632             # what "hidden" libraries, object files and flags are used when
 633             # linking a shared library.
 634             output_verbose_link_cmd="$CC -G $CFLAGS -v conftest.$objext 2>&1 | egrep \"\-L\""
 635           fi
 636
 637           hardcode_libdir_flag_spec='${wl}-R $wl$libdir'
 638         fi
 639         ;;
 640     esac
 641     ;;
 642   tandem*)
 643     case $cc_basename in
 644       NCC)
 645         # NonStop-UX NCC 3.20
 646         # FIXME: insert proper C++ library support
 647         ld_shlibs=no
 648         ;;
 649       *)
 650         # FIXME: insert proper C++ library support
 651         ld_shlibs=no
 652         ;;
 653     esac
 654     ;;
 655   tpf*)
 656     ld_shlibs=yes
 657     ;;
 658   unixware*)
 659     # FIXME: insert proper C++ library support
 660     ld_shlibs=no
 661     ;;
 662   vxworks*)
 663     # FIXME: insert proper C++ library support
 664     ld_shlibs=no
 665     ;;
 666   *)
 667     # FIXME: insert proper C++ library support
 668     ld_shlibs=no
 669     ;;
 670 esac
 671
 672
 673 ## Compiler Characteristics: PIC flags, static flags, etc
 674
 675 # We don't use cached values here since only the C compiler
 676 # characteristics should be cached.
 677 ac_cv_prog_cc_pic=
 678 ac_cv_prog_cc_shlib=
 679 ac_cv_prog_cc_wl=
 680 ac_cv_prog_cc_static=
 681 ac_cv_prog_cc_no_builtin=
 682 ac_cv_prog_cc_can_build_shared=$can_build_shared
 683
 684 ac_cv_prog_cc_pic_works=
 685 ac_cv_prog_cc_static_works=
 686
 687 if test "$with_gcc" = yes; then
 688   ac_cv_prog_cc_wl='-Wl,'
 689   ac_cv_prog_cc_static='-static'
 690
 691   case $host_os in
 692   aix*)
 693     # All AIX code is PIC.
 694     if test "$host_cpu" = ia64; then
 695       # AIX 5 now supports IA64 processor
 696       lt_cv_prog_cc_static='-Bstatic'
 697     else
 698       lt_cv_prog_cc_static='-bnso -bI:/lib/syscalls.exp'
 699     fi
 700     ;;
 701   amigaos*)
 702     # FIXME: we need at least 68020 code to build shared libraries, but
 703     # adding the `-m68020' flag to GCC prevents building anything better,
 704     # like `-m68040'.
 705     ac_cv_prog_cc_pic='-m68020 -resident32 -malways-restore-a4'
 706     ;;
 707   beos* | irix5* | irix6* | osf3* | osf4* | osf5*)
 708     # PIC is the default for these OSes.
 709     ;;
 710   cygwin* | mingw* | os2*)
 711     # This hack is so that the source file can tell whether it is being
 712     # built for inclusion in a dll (and should export symbols for example).
 713     ac_cv_prog_cc_pic='-DDLL_EXPORT'
 714     ;;
 715   darwin* | rhapsody*)
 716     # PIC is the default on this platform
 717     # Common symbols not allowed in MH_DYLIB files
 718     lt_cv_prog_cc_pic='-fno-common'
 719     ;;
 720   *djgpp*)
 721     # DJGPP does not support shared libraries at all
 722     ac_cv_prog_cc_pic=
 723     ;;
 724   sysv4*MP*)
 725     if test -d /usr/nec; then
 726       ac_cv_prog_cc_pic=-Kconform_pic
 727     fi
 728     ;;
 729   *)
 730     ac_cv_prog_cc_pic='-fPIC'
 731     ;;
 732   esac
 733 else
 734   case $host_os in
 735     aix4* | aix5*)
 736       # All AIX code is PIC.
 737       if test "$host_cpu" = ia64; then
 738         # AIX 5 now supports IA64 processor
 739         lt_cv_prog_cc_static='-Bstatic'
 740       else
 741         lt_cv_prog_cc_static='-bnso -bI:/lib/syscalls.exp'
 742       fi
 743       ;;
 744     chorus*)
 745       case $cc_basename in
 746       cxch68)
 747         # Green Hills C++ Compiler
 748         # 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"
 749         ;;
 750       esac
 751       ;;
 752     dgux*)
 753       case $cc_basename in
 754         ec++)
 755           ac_cv_prog_cc_pic='-KPIC'
 756           ;;
 757         ghcx)
 758           # Green Hills C++ Compiler
 759           ac_cv_prog_cc_pic='-pic'
 760           ;;
 761         *)
 762           ;;
 763       esac
 764       ;;
 765     freebsd* | kfreebsd*-gnu)
 766       # FreeBSD uses GNU C++
 767       ;;
 768     gnu*)
 769       ;;
 770     hpux9* | hpux10* | hpux11*)
 771       case $cc_basename in
 772         CC)
 773           ac_cv_prog_cc_wl='-Wl,'
 774           ac_cv_prog_cc_static="${ac_cv_prog_cc_wl}-a ${ac_cv_prog_cc_wl}archive"
 775           ac_cv_prog_cc_pic='+Z'
 776           ;;
 777         aCC)
 778           ac_cv_prog_cc_wl='-Wl,'
 779           ac_cv_prog_cc_static="${ac_cv_prog_cc_wl}-a ${ac_cv_prog_cc_wl}archive"
 780           ac_cv_prog_cc_pic='+Z'
 781           ;;
 782         *)
 783           ;;
 784       esac
 785       ;;
 786     irix5* | irix6*)
 787       case $cc_basename in
 788         CC)
 789           ac_cv_prog_cc_wl='-Wl,'
 790           ac_cv_prog_cc_static='-non_shared'
 791           ac_cv_prog_cc_pic='-KPIC'
 792           ;;
 793         *)
 794           ;;
 795       esac
 796       ;;
 797     linux*)
 798       case $cc_basename in
 799         KCC)
 800           # KAI C++ Compiler
 801           ac_cv_prog_cc_wl='--backend -Wl,'
 802           ac_cv_prog_cc_pic='-fPIC'
 803           ;;
 804         cxx)
 805           # Compaq C++
 806           # Make sure the PIC flag is empty.  It appears that all Alpha
 807           # Linux and Compaq Tru64 Unix objects are PIC.
 808           ac_cv_prog_cc_pic=
 809           ac_cv_prog_cc_static='-non_shared'
 810           ;;
 811         *)
 812           ;;
 813       esac
 814       ;;
 815     lynxos*)
 816       ;;
 817     m88k*)
 818       ;;
 819     mvs*)
 820       case $cc_basename in
 821         cxx)
 822           ac_cv_prog_cc_pic='-W c,exportall'
 823           ;;
 824         *)
 825           ;;
 826       esac
 827       ;;
 828     netbsd*)
 829       ;;
 830     osf3* | osf4* | osf5*)
 831       case $cc_basename in
 832         KCC)
 833           ac_cv_prog_cc_wl='--backend -Wl,'
 834           ;;
 835         RCC)
 836           # Rational C++ 2.4.1
 837           ac_cv_prog_cc_pic='-pic'
 838           ;;
 839         cxx)
 840           # Digital/Compaq C++
 841           ac_cv_prog_cc_wl='-Wl,'
 842           # Make sure the PIC flag is empty.  It appears that all Alpha
 843           # Linux and Compaq Tru64 Unix objects are PIC.
 844           ac_cv_prog_cc_pic=
 845           ac_cv_prog_cc_static='-non_shared'
 846           ;;
 847         *)
 848           ;;
 849       esac
 850       ;;
 851     psos*)
 852       ;;
 853     sco*)
 854       case $cc_basename in
 855         CC)
 856           ac_cv_prog_cc_pic='-fPIC'
 857           ;;
 858         *)
 859           ;;
 860       esac
 861       ;;
 862     solaris*)
 863       case $cc_basename in
 864         CC)
 865           # Sun C++ 4.2, 5.x and Centerline C++
 866           ac_cv_prog_cc_pic='-KPIC'
 867           ac_cv_prog_cc_static='-Bstatic'
 868           ac_cv_prog_cc_wl='-Qoption ld '
 869           ;;
 870         gcx)
 871           # Green Hills C++ Compiler
 872           ac_cv_prog_cc_pic='-PIC'
 873           ;;
 874         *)
 875           ;;
 876       esac
 877       ;;
 878     sunos4*)
 879       case $cc_basename in
 880         CC)
 881           # Sun C++ 4.x
 882           ac_cv_prog_cc_pic='-pic'
 883           ac_cv_prog_cc_static='-Bstatic'
 884           ;;
 885         lcc)
 886           # Lucid
 887           ac_cv_prog_cc_pic='-pic'
 888           ;;
 889         *)
 890           ;;
 891       esac
 892       ;;
 893     tandem*)
 894       case $cc_basename in
 895         NCC)
 896           # NonStop-UX NCC 3.20
 897           ac_cv_prog_cc_pic='-KPIC'
 898           ;;
 899         *)
 900           ;;
 901       esac
 902       ;;
 903     unixware*)
 904       ;;
 905     vxworks*)
 906       ;;
 907     *)
 908       ac_cv_prog_cc_can_build_shared=no
 909       ;;
 910   esac
 911 fi
 912
 913 case "$host_os" in
 914     # Platforms which do not suport PIC and -DPIC is meaningless
 915     # on them:
 916     *djgpp*)
 917       ac_cv_prog_cc_pic=
 918       ;;
 919     *)
 920       ac_cv_prog_cc_pic="$ac_cv_prog_cc_pic -DPIC"
 921       ;;
 922 esac
 923
 924
 925 # Figure out "hidden" C++ library dependencies from verbose
 926 # compiler output whening linking a shared library.
 927 cat > conftest.$ac_ext <<EOF
 928 class Foo
 929 {
 930 public:
 931   Foo (void) { a = 0; }
 932 private:
 933   int a;
 934 };
 935 EOF
 936
 937
 938 if (eval $ac_compile) 2>&5; then
 939   # Parse the compiler output and extract the necessary
 940   # objects, libraries and library flags.
 941
 942   # Sentinel used to keep track of whether or not we are before
 943   # the conftest object file.
 944   pre_test_object_deps_done=no
 945
 946   for p in `eval $output_verbose_link_cmd`; do
 947
 948     case $p in
 949
 950     -L* | -R* | -l*)
 951        # Some compilers place space between "-{L,R}" and the path.
 952        # Remove the space.
 953        if test $p = "-L" \
 954           || test $p = "-R"; then
 955          prev=$p
 956          continue
 957        else
 958          prev=
 959        fi
 960
 961        if test "$pre_test_object_deps_done" = no; then
 962          case $p in
 963          -L* | -R*)
 964            # Internal compiler library paths should come after those
 965            # provided the user.  The postdeps already come after the
 966            # user supplied libs so there is no need to process them.
 967            if test -z "$compiler_lib_search_path"; then
 968              compiler_lib_search_path="${prev}${p}"
 969            else
 970              compiler_lib_search_path="${compiler_lib_search_path} ${prev}${p}"
 971            fi
 972            ;;
 973          # The "-l" case would never come before the object being
 974          # linked, so don't bother handling this case.
 975          esac
 976        else
 977          if test -z "$postdeps"; then
 978            postdeps="${prev}${p}"
 979          else
 980            postdeps="${postdeps} ${prev}${p}"
 981          fi
 982        fi
 983        ;;
 984
 985     *.$objext)
 986        # This assumes that the test object file only shows up
 987        # once in the compiler output.
 988        if test "$p" = "conftest.$objext"; then
 989          pre_test_object_deps_done=yes
 990          continue
 991        fi
 992
 993        if test "$pre_test_object_deps_done" = no; then
 994          if test -z "$predep_objects"; then
 995            predep_objects="$p"
 996          else
 997            predep_objects="$predep_objects $p"
 998          fi
 999        else
1000          if test -z "$postdep_objects"; then
1001            postdep_objects="$p"
1002          else
1003            postdep_objects="$postdep_objects $p"
1004          fi
1005        fi
1006        ;;
1007
1008     *) ;; # Ignore the rest.
1009
1010     esac
1011   done
1012
1013   # Clean up.
1014   rm -f a.out
1015 else
1016   echo "ltcf-cxx.sh: error: problem compiling test program"
1017 fi
1018
1019 $rm -f confest.$objext
1020
1021 case " $postdeps " in
1022 *" -lc "*) need_lc=no ;;
1023 *) need_lc=yes ;;
1024 esac