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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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*)
 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*)
 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 $cc_basename in
 644       NCC)
 645         # NonStop-UX NCC 3.20
 646         # FIXME: insert proper C++ library support
 647         ld_shlibs=no
 648         ;;
 649       *)
 650         # FIXME: insert proper C++ library support
 651         ld_shlibs=no
 652         ;;
 653     esac
 654     ;;
 655   unixware*)
 656     # FIXME: insert proper C++ library support
 657     ld_shlibs=no
 658     ;;
 659   vxworks*)
 660     # FIXME: insert proper C++ library support
 661     ld_shlibs=no
 662     ;;
 663   *)
 664     # FIXME: insert proper C++ library support
 665     ld_shlibs=no
 666     ;;
 667 esac
 668
 669
 670 ## Compiler Characteristics: PIC flags, static flags, etc
 671
 672 # We don't use cached values here since only the C compiler
 673 # characteristics should be cached.
 674 ac_cv_prog_cc_pic=
 675 ac_cv_prog_cc_shlib=
 676 ac_cv_prog_cc_wl=
 677 ac_cv_prog_cc_static=
 678 ac_cv_prog_cc_no_builtin=
 679 ac_cv_prog_cc_can_build_shared=$can_build_shared
 680
 681 ac_cv_prog_cc_pic_works=
 682 ac_cv_prog_cc_static_works=
 683
 684 if test "$with_gcc" = yes; then
 685   ac_cv_prog_cc_wl='-Wl,'
 686   ac_cv_prog_cc_static='-static'
 687
 688   case $host_os in
 689   aix*)
 690     # All AIX code is PIC.
 691     if test "$host_cpu" = ia64; then
 692       # AIX 5 now supports IA64 processor
 693       lt_cv_prog_cc_static='-Bstatic'
 694     else
 695       lt_cv_prog_cc_static='-bnso -bI:/lib/syscalls.exp'
 696     fi
 697     ;;
 698   amigaos*)
 699     # FIXME: we need at least 68020 code to build shared libraries, but
 700     # adding the `-m68020' flag to GCC prevents building anything better,
 701     # like `-m68040'.
 702     ac_cv_prog_cc_pic='-m68020 -resident32 -malways-restore-a4'
 703     ;;
 704   beos* | irix5* | irix6* | osf3* | osf4* | osf5*)
 705     # PIC is the default for these OSes.
 706     ;;
 707   cygwin* | mingw* | os2*)
 708     # This hack is so that the source file can tell whether it is being
 709     # built for inclusion in a dll (and should export symbols for example).
 710     ac_cv_prog_cc_pic='-DDLL_EXPORT'
 711     ;;
 712   darwin* | rhapsody*)
 713     # PIC is the default on this platform
 714     # Common symbols not allowed in MH_DYLIB files
 715     lt_cv_prog_cc_pic='-fno-common'
 716     ;;
 717   *djgpp*)
 718     # DJGPP does not support shared libraries at all
 719     ac_cv_prog_cc_pic=
 720     ;;
 721   sysv4*MP*)
 722     if test -d /usr/nec; then
 723       ac_cv_prog_cc_pic=-Kconform_pic
 724     fi
 725     ;;
 726   *)
 727     ac_cv_prog_cc_pic='-fPIC'
 728     ;;
 729   esac
 730 else
 731   case $host_os in
 732     aix4* | aix5*)
 733       # All AIX code is PIC.
 734       if test "$host_cpu" = ia64; then
 735         # AIX 5 now supports IA64 processor
 736         lt_cv_prog_cc_static='-Bstatic'
 737       else
 738         lt_cv_prog_cc_static='-bnso -bI:/lib/syscalls.exp'
 739       fi
 740       ;;
 741     chorus*)
 742       case $cc_basename in
 743       cxch68)
 744         # Green Hills C++ Compiler
 745         # 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"
 746         ;;
 747       esac
 748       ;;
 749     dgux*)
 750       case $cc_basename in
 751         ec++)
 752           ac_cv_prog_cc_pic='-KPIC'
 753           ;;
 754         ghcx)
 755           # Green Hills C++ Compiler
 756           ac_cv_prog_cc_pic='-pic'
 757           ;;
 758         *)
 759           ;;
 760       esac
 761       ;;
 762     freebsd*)
 763       # FreeBSD uses GNU C++
 764       ;;
 765     gnu*)
 766       ;;
 767     hpux9* | hpux10* | hpux11*)
 768       case $cc_basename in
 769         CC)
 770           ac_cv_prog_cc_wl='-Wl,'
 771           ac_cv_prog_cc_static="${ac_cv_prog_cc_wl}-a ${ac_cv_prog_cc_wl}archive"
 772           ac_cv_prog_cc_pic='+Z'
 773           ;;
 774         aCC)
 775           ac_cv_prog_cc_wl='-Wl,'
 776           ac_cv_prog_cc_static="${ac_cv_prog_cc_wl}-a ${ac_cv_prog_cc_wl}archive"
 777           ac_cv_prog_cc_pic='+Z'
 778           ;;
 779         *)
 780           ;;
 781       esac
 782       ;;
 783     irix5* | irix6*)
 784       case $cc_basename in
 785         CC)
 786           ac_cv_prog_cc_wl='-Wl,'
 787           ac_cv_prog_cc_static='-non_shared'
 788           ac_cv_prog_cc_pic='-KPIC'
 789           ;;
 790         *)
 791           ;;
 792       esac
 793       ;;
 794     linux*)
 795       case $cc_basename in
 796         KCC)
 797           # KAI C++ Compiler
 798           ac_cv_prog_cc_wl='--backend -Wl,'
 799           ac_cv_prog_cc_pic='-fPIC'
 800           ;;
 801         cxx)
 802           # Compaq C++
 803           # Make sure the PIC flag is empty.  It appears that all Alpha
 804           # Linux and Compaq Tru64 Unix objects are PIC.
 805           ac_cv_prog_cc_pic=
 806           ac_cv_prog_cc_static='-non_shared'
 807           ;;
 808         *)
 809           ;;
 810       esac
 811       ;;
 812     lynxos*)
 813       ;;
 814     m88k*)
 815       ;;
 816     mvs*)
 817       case $cc_basename in
 818         cxx)
 819           ac_cv_prog_cc_pic='-W c,exportall'
 820           ;;
 821         *)
 822           ;;
 823       esac
 824       ;;
 825     netbsd*)
 826       ;;
 827     osf3* | osf4* | osf5*)
 828       case $cc_basename in
 829         KCC)
 830           ac_cv_prog_cc_wl='--backend -Wl,'
 831           ;;
 832         RCC)
 833           # Rational C++ 2.4.1
 834           ac_cv_prog_cc_pic='-pic'
 835           ;;
 836         cxx)
 837           # Digital/Compaq C++
 838           ac_cv_prog_cc_wl='-Wl,'
 839           # Make sure the PIC flag is empty.  It appears that all Alpha
 840           # Linux and Compaq Tru64 Unix objects are PIC.
 841           ac_cv_prog_cc_pic=
 842           ac_cv_prog_cc_static='-non_shared'
 843           ;;
 844         *)
 845           ;;
 846       esac
 847       ;;
 848     psos*)
 849       ;;
 850     sco*)
 851       case $cc_basename in
 852         CC)
 853           ac_cv_prog_cc_pic='-fPIC'
 854           ;;
 855         *)
 856           ;;
 857       esac
 858       ;;
 859     solaris*)
 860       case $cc_basename in
 861         CC)
 862           # Sun C++ 4.2, 5.x and Centerline C++
 863           ac_cv_prog_cc_pic='-KPIC'
 864           ac_cv_prog_cc_static='-Bstatic'
 865           ac_cv_prog_cc_wl='-Qoption ld '
 866           ;;
 867         gcx)
 868           # Green Hills C++ Compiler
 869           ac_cv_prog_cc_pic='-PIC'
 870           ;;
 871         *)
 872           ;;
 873       esac
 874       ;;
 875     sunos4*)
 876       case $cc_basename in
 877         CC)
 878           # Sun C++ 4.x
 879           ac_cv_prog_cc_pic='-pic'
 880           ac_cv_prog_cc_static='-Bstatic'
 881           ;;
 882         lcc)
 883           # Lucid
 884           ac_cv_prog_cc_pic='-pic'
 885           ;;
 886         *)
 887           ;;
 888       esac
 889       ;;
 890     tandem*)
 891       case $cc_basename in
 892         NCC)
 893           # NonStop-UX NCC 3.20
 894           ac_cv_prog_cc_pic='-KPIC'
 895           ;;
 896         *)
 897           ;;
 898       esac
 899       ;;
 900     unixware*)
 901       ;;
 902     vxworks*)
 903       ;;
 904     *)
 905       ac_cv_prog_cc_can_build_shared=no
 906       ;;
 907   esac
 908 fi
 909
 910 case "$host_os" in
 911     # Platforms which do not suport PIC and -DPIC is meaningless
 912     # on them:
 913     *djgpp*)
 914       ac_cv_prog_cc_pic=
 915       ;;
 916     *)
 917       ac_cv_prog_cc_pic="$ac_cv_prog_cc_pic -DPIC"
 918       ;;
 919 esac
 920
 921
 922 # Figure out "hidden" C++ library dependencies from verbose
 923 # compiler output whening linking a shared library.
 924 cat > conftest.$ac_ext <<EOF
 925 class Foo
 926 {
 927 public:
 928   Foo (void) { a = 0; }
 929 private:
 930   int a;
 931 };
 932 EOF
 933
 934
 935 if (eval $ac_compile) 2>&5; then
 936   # Parse the compiler output and extract the necessary
 937   # objects, libraries and library flags.
 938
 939   # Sentinel used to keep track of whether or not we are before
 940   # the conftest object file.
 941   pre_test_object_deps_done=no
 942
 943   for p in `eval $output_verbose_link_cmd`; do
 944
 945     case $p in
 946
 947     -L* | -R* | -l*)
 948        # Some compilers place space between "-{L,R}" and the path.
 949        # Remove the space.
 950        if test $p = "-L" \
 951           || test $p = "-R"; then
 952          prev=$p
 953          continue
 954        else
 955          prev=
 956        fi
 957
 958        if test "$pre_test_object_deps_done" = no; then
 959          case $p in
 960          -L* | -R*)
 961            # Internal compiler library paths should come after those
 962            # provided the user.  The postdeps already come after the
 963            # user supplied libs so there is no need to process them.
 964            if test -z "$compiler_lib_search_path"; then
 965              compiler_lib_search_path="${prev}${p}"
 966            else
 967              compiler_lib_search_path="${compiler_lib_search_path} ${prev}${p}"
 968            fi
 969            ;;
 970          # The "-l" case would never come before the object being
 971          # linked, so don't bother handling this case.
 972          esac
 973        else
 974          if test -z "$postdeps"; then
 975            postdeps="${prev}${p}"
 976          else
 977            postdeps="${postdeps} ${prev}${p}"
 978          fi
 979        fi
 980        ;;
 981
 982     *.$objext)
 983        # This assumes that the test object file only shows up
 984        # once in the compiler output.
 985        if test "$p" = "conftest.$objext"; then
 986          pre_test_object_deps_done=yes
 987          continue
 988        fi
 989
 990        if test "$pre_test_object_deps_done" = no; then
 991          if test -z "$predep_objects"; then
 992            predep_objects="$p"
 993          else
 994            predep_objects="$predep_objects $p"
 995          fi
 996        else
 997          if test -z "$postdep_objects"; then
 998            postdep_objects="$p"
 999          else
1000            postdep_objects="$postdep_objects $p"
1001          fi
1002        fi
1003        ;;
1004
1005     *) ;; # Ignore the rest.
1006
1007     esac
1008   done
1009
1010   # Clean up.
1011   rm -f a.out
1012 else
1013   echo "ltcf-cxx.sh: error: problem compiling test program"
1014 fi
1015
1016 $rm -f confest.$objext
1017
1018 case " $postdeps " in
1019 *" -lc "*) need_lc=no ;;
1020 *) need_lc=yes ;;
1021 esac