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