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     if test $with_gnu_ld = no; then
 247       hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
 248       hardcode_libdir_separator=:
 249       export_dynamic_flag_spec='${wl}-E'
 250     fi
 251     hardcode_direct=yes
 252     hardcode_minus_L=yes # Not in the search PATH, but as the default
 253                          # location of the library.
 254
 255     case $cc_basename in
 256       CC)
 257         # FIXME: insert proper C++ library support
 258         ld_shlibs=no
 259         ;;
 260       aCC)
 261         case $host_os in
 262         hpux9*) archive_cmds='$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 $lib' ;;
 263         *) archive_cmds='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' ;;
 264         esac
 265         # Commands to make compiler produce verbose output that lists
 266         # what "hidden" libraries, object files and flags are used when
 267         # linking a shared library.
 268         #
 269         # There doesn't appear to be a way to prevent this compiler from
 270         # explicitly linking system object files so we need to strip them
 271         # from the output so that they don't get included in the library
 272         # dependencies.
 273         output_verbose_link_cmds='templist=`($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'
 274         ;;
 275       *)
 276         if test $with_gcc = yes; then
 277           if test $with_gnu_ld = no; then
 278             case "$host_os" in
 279             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 $lib' ;;
 280             *) archive_cmds='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' ;;
 281             esac
 282           fi
 283         else
 284           # FIXME: insert proper C++ library support
 285           ld_shlibs=no
 286         fi
 287         ;;
 288     esac
 289     ;;
 290   irix5* | irix6*)
 291     case $cc_basename in
 292       CC)
 293         # SGI C++
 294         archive_cmds='$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 $lib'
 295
 296         # Archives containing C++ object files must be created using
 297         # "CC -ar", where "CC" is the IRIX C++ compiler.  This is
 298         # necessary to make sure instantiated templates are included
 299         # in the archive.
 300         old_archive_cmds='$CC -ar -WR,-u -o $oldlib $oldobjs'
 301         ;;
 302       *)
 303         if test "$with_gcc" = yes; then
 304           if test "$with_gnu_ld" = no; then
 305             archive_cmds='$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 $lib'
 306           else
 307             archive_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $linker_flags -soname $soname `test -n "$verstring" && echo -set_version $verstring` -o $lib'
 308           fi
 309         fi
 310         hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 311         hardcode_libdir_separator=:
 312         link_all_deplibs=yes
 313         ;;
 314     esac
 315     ;;
 316   linux*)
 317     case $cc_basename in
 318       KCC)
 319         # Kuck and Associates, Inc. (KAI) C++ Compiler
 320
 321         # KCC will only create a shared library if the output file
 322         # ends with ".so" (or ".sl" for HP-UX), so rename the library
 323         # to its proper name (with version) after linking.
 324         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'
 325         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 $lib'
 326
 327         # Commands to make compiler produce verbose output that lists
 328         # what "hidden" libraries, object files and flags are used when
 329         # linking a shared library.
 330         #
 331         # There doesn't appear to be a way to prevent this compiler from
 332         # explicitly linking system object files so we need to strip them
 333         # from the output so that they don't get included in the library
 334         # dependencies.
 335         output_verbose_link_cmds='templist=`$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 $list'
 336
 337         hardcode_libdir_flag_spec='${wl}--rpath,$libdir'
 338         export_dynamic_flag_spec='${wl}--export-dynamic'
 339
 340         # Archives containing C++ object files must be created using
 341         # "CC -Bstatic", where "CC" is the KAI C++ compiler.
 342         old_archive_cmds='$CC -Bstatic -o $oldlib $oldobjs'
 343         ;;
 344       cxx)
 345         # Compaq C++
 346         archive_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
 347         archive_expsym_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname  -o $lib ${wl}-retain-symbols-file $wl$export_symbols'
 348
 349         runpath_var=LD_RUN_PATH
 350         hardcode_libdir_flag_spec='-rpath $libdir'
 351         hardcode_libdir_separator=:
 352
 353         # Commands to make compiler produce verbose output that lists
 354         # what "hidden" libraries, object files and flags are used when
 355         # linking a shared library.
 356         #
 357         # There doesn't appear to be a way to prevent this compiler from
 358         # explicitly linking system object files so we need to strip them
 359         # from the output so that they don't get included in the library
 360         # dependencies.
 361         output_verbose_link_cmds='templist=`$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'
 362         ;;
 363     esac
 364     ;;
 365   lynxos*)
 366     # FIXME: insert proper C++ library support
 367     ld_shlibs=no
 368     ;;
 369   m88k*)
 370     # FIXME: insert proper C++ library support
 371     ld_shlibs=no
 372     ;;
 373   mvs*)
 374     case $cc_basename in
 375       cxx)
 376         # FIXME: insert proper C++ library support
 377         ld_shlibs=no
 378         ;;
 379       *)
 380         # FIXME: insert proper C++ library support
 381         ld_shlibs=no
 382         ;;
 383     esac
 384     ;;
 385   netbsd*)
 386     # NetBSD uses g++ - do we need to do anything?
 387     ;;
 388   osf3*)
 389     if test "$with_gcc" = yes && test "$with_gnu_ld" = no; then
 390       allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 391       archive_cmds='$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 $lib'
 392
 393       hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 394       hardcode_libdir_separator=:
 395
 396       # Commands to make compiler produce verbose output that lists
 397       # what "hidden" libraries, object files and flags are used when
 398       # linking a shared library.
 399       output_verbose_link_cmds='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"'
 400     fi
 401
 402     case $cc_basename in
 403       KCC)
 404         # Kuck and Associates, Inc. (KAI) C++ Compiler
 405
 406         # KCC will only create a shared library if the output file
 407         # ends with ".so" (or ".sl" for HP-UX), so rename the library
 408         # to its proper name (with version) after linking.
 409         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 $lib'
 410
 411         hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
 412         hardcode_libdir_separator=:
 413
 414         # Archives containing C++ object files must be created using
 415         # "CC -Bstatic", where "CC" is the KAI C++ compiler.
 416         old_archive_cmds='$CC -Bstatic -o $oldlib $oldobjs'
 417
 418         ;;
 419       RCC)
 420         # Rational C++ 2.4.1
 421         # FIXME: insert proper C++ library support
 422         ld_shlibs=no
 423         ;;
 424       cxx)
 425         allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 426         archive_cmds='$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 $lib'
 427
 428         hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 429         hardcode_libdir_separator=:
 430
 431         # Commands to make compiler produce verbose output that lists
 432         # what "hidden" libraries, object files and flags are used when
 433         # linking a shared library.
 434         #
 435         # There doesn't appear to be a way to prevent this compiler from
 436         # explicitly linking system object files so we need to strip them
 437         # from the output so that they don't get included in the library
 438         # dependencies.
 439         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 $list'
 440         ;;
 441       *)
 442         # FIXME: insert proper C++ library support
 443         ld_shlibs=no
 444         ;;
 445     esac
 446     ;;
 447   osf4* | osf5*)
 448     if test "$with_gcc" = yes && test "$with_gnu_ld" = no; then
 449       allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 450       archive_cmds='$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 $lib'
 451
 452       hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 453       hardcode_libdir_separator=:
 454
 455       # Commands to make compiler produce verbose output that lists
 456       # what "hidden" libraries, object files and flags are used when
 457       # linking a shared library.
 458       output_verbose_link_cmds='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"'
 459     fi
 460
 461     case $cc_basename in
 462       KCC)
 463         # Kuck and Associates, Inc. (KAI) C++ Compiler
 464
 465         # KCC will only create a shared library if the output file
 466         # ends with ".so" (or ".sl" for HP-UX), so rename the library
 467         # to its proper name (with version) after linking.
 468         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 $lib'
 469
 470         hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
 471         hardcode_libdir_separator=:
 472
 473         # Archives containing C++ object files must be created using
 474         # the KAI C++ compiler.
 475         old_archive_cmds='$CC -o $oldlib $oldobjs'
 476         ;;
 477       RCC)
 478         # Rational C++ 2.4.1
 479         # FIXME: insert proper C++ library support
 480         ld_shlibs=no
 481         ;;
 482       cxx)
 483         allow_undefined_flag=' -expect_unresolved \*'
 484         archive_cmds='$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'
 485         archive_expsym_cmds='for i in `cat $export_symbols`; do printf "-exported_symbol " >> $lib.exp; echo "\$i" >> $lib.exp; done~
 486           echo "-hidden">> $lib.exp~
 487           $CC -shared$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~
 488           $rm $lib.exp'
 489
 490         hardcode_libdir_flag_spec='-rpath $libdir'
 491         hardcode_libdir_separator=:
 492
 493         # Commands to make compiler produce verbose output that lists
 494         # what "hidden" libraries, object files and flags are used when
 495         # linking a shared library.
 496         #
 497         # There doesn't appear to be a way to prevent this compiler from
 498         # explicitly linking system object files so we need to strip them
 499         # from the output so that they don't get included in the library
 500         # dependencies.
 501         output_verbose_link_cmds='templist=`$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'
 502         ;;
 503       *)
 504         # FIXME: insert proper C++ library support
 505         ld_shlibs=no
 506         ;;
 507     esac
 508     ;;
 509   psos*)
 510     # FIXME: insert proper C++ library support
 511     ld_shlibs=no
 512     ;;
 513   sco*)
 514     case $cc_basename in
 515       CC)
 516         # FIXME: insert proper C++ library support
 517         ld_shlibs=no
 518         ;;
 519       *)
 520         # FIXME: insert proper C++ library support
 521         ld_shlibs=no
 522         ;;
 523     esac
 524     ;;
 525   sunos4*)
 526     case $cc_basename in
 527       CC)
 528         # Sun C++ 4.x
 529         # FIXME: insert proper C++ library support
 530         ld_shlibs=no
 531         ;;
 532       lcc)
 533         # Lucid
 534         # FIXME: insert proper C++ library support
 535         ld_shlibs=no
 536         ;;
 537       *)
 538         # FIXME: insert proper C++ library support
 539         ld_shlibs=no
 540         ;;
 541     esac
 542     ;;
 543   solaris*)
 544     case $cc_basename in
 545       CC)
 546         # Sun C++ 4.2, 5.x and Centerline C++
 547         no_undefined_flag=' -zdefs'
 548         archive_cmds='$CC -G${allow_undefined_flag} -nolib -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
 549         archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 550         $CC -G${allow_undefined_flag} -nolib ${wl}-M ${wl}$lib.exp -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$rm $lib.exp'
 551
 552         hardcode_libdir_flag_spec='-R$libdir'
 553         hardcode_shlibpath_var=no
 554         case $host_os in
 555           solaris2.[0-5] | solaris2.[0-5].*) ;;
 556           *)
 557             # The C++ compiler is used as linker so we must use $wl
 558             # flag to pass the commands to the underlying system
 559             # linker.
 560             # Supported since Solaris 2.6 (maybe 2.5.1?)
 561             whole_archive_flag_spec='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
 562             ;;
 563         esac
 564         link_all_deplibs=yes
 565
 566         # Commands to make compiler produce verbose output that lists
 567         # what "hidden" libraries, object files and flags are used when
 568         # linking a shared library.
 569         #
 570         # There doesn't appear to be a way to prevent this compiler from
 571         # explicitly linking system object files so we need to strip them
 572         # from the output so that they don't get included in the library
 573         # dependencies.
 574         output_verbose_link_cmds='templist=`$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 $list'
 575
 576         # Archives containing C++ object files must be created using
 577         # "CC -xar", where "CC" is the Sun C++ compiler.  This is
 578         # necessary to make sure instantiated templates are included
 579         # in the archive.
 580         old_archive_cmds='$CC -xar -o $oldlib $oldobjs'
 581         ;;
 582       gcx)
 583         # Green Hills C++ Compiler
 584         archive_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
 585
 586         # The C++ compiler must be used to create the archive.
 587         old_archive_cmds='$CC $LDFLAGS -archive -o $oldlib $oldobjs'
 588         ;;
 589       *)
 590         # GNU C++ compiler with Solaris linker
 591         if test "$with_gcc" = yes && test "$with_gnu_ld" = no; then
 592           no_undefined_flag=' ${wl}-z ${wl}defs'
 593           if $CC --version | egrep -v '^2\.7' > /dev/null; then
 594             archive_cmds='$CC -shared -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $linker_flags ${wl}-h $wl$soname -o $lib'
 595             archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 596                 $CC -shared -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags~$rm $lib.exp'
 597
 598             # Commands to make compiler produce verbose output that lists
 599             # what "hidden" libraries, object files and flags are used when
 600             # linking a shared library.
 601             output_verbose_link_cmds="$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep \"\-L\""
 602           else
 603             # g++ 2.7 appears to require `-G' NOT `-shared' on this
 604             # platform.
 605             archive_cmds='$CC -G -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $linker_flags ${wl}-h $wl$soname -o $lib'
 606             archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 607                 $CC -G -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags~$rm $lib.exp'
 608
 609             # Commands to make compiler produce verbose output that lists
 610             # what "hidden" libraries, object files and flags are used when
 611             # linking a shared library.
 612             output_verbose_link_cmds="$CC -G $CFLAGS -v conftest.$objext 2>&1 | egrep \"\-L\""
 613           fi
 614
 615           hardcode_libdir_flag_spec='${wl}-R $wl$libdir'
 616         fi
 617         ;;
 618     esac
 619     ;;
 620   tandem*)
 621     case $cc_basename in
 622       NCC)
 623         # NonStop-UX NCC 3.20
 624         # FIXME: insert proper C++ library support
 625         ld_shlibs=no
 626         ;;
 627       *)
 628         # FIXME: insert proper C++ library support
 629         ld_shlibs=no
 630         ;;
 631     esac
 632     ;;
 633   unixware*)
 634     # FIXME: insert proper C++ library support
 635     ld_shlibs=no
 636     ;;
 637   vxworks*)
 638     # FIXME: insert proper C++ library support
 639     ld_shlibs=no
 640     ;;
 641   *)
 642     # FIXME: insert proper C++ library support
 643     ld_shlibs=no
 644     ;;
 645 esac
 646
 647
 648 ## Compiler Characteristics: PIC flags, static flags, etc
 649
 650 # We don't use cached values here since only the C compiler
 651 # characteristics should be cached.
 652 ac_cv_prog_cc_pic=
 653 ac_cv_prog_cc_shlib=
 654 ac_cv_prog_cc_wl=
 655 ac_cv_prog_cc_static=
 656 ac_cv_prog_cc_no_builtin=
 657 ac_cv_prog_cc_can_build_shared=$can_build_shared
 658
 659 ac_cv_prog_cc_pic_works=
 660 ac_cv_prog_cc_static_works=
 661
 662 if test "$with_gcc" = yes; then
 663   ac_cv_prog_cc_wl='-Wl,'
 664   ac_cv_prog_cc_static='-static'
 665
 666   case $host_os in
 667   aix*)
 668     # All AIX code is PIC.
 669     if test "$host_cpu" = ia64; then
 670       # AIX 5 now supports IA64 processor
 671       lt_cv_prog_cc_static='-Bstatic'
 672     else
 673       lt_cv_prog_cc_static='-bnso -bI:/lib/syscalls.exp'
 674     fi
 675     ;;
 676   amigaos*)
 677     # FIXME: we need at least 68020 code to build shared libraries, but
 678     # adding the `-m68020' flag to GCC prevents building anything better,
 679     # like `-m68040'.
 680     ac_cv_prog_cc_pic='-m68020 -resident32 -malways-restore-a4'
 681     ;;
 682   beos* | irix5* | irix6* | osf3* | osf4* | osf5*)
 683     # PIC is the default for these OSes.
 684     ;;
 685   cygwin* | mingw* | os2*)
 686     # This hack is so that the source file can tell whether it is being
 687     # built for inclusion in a dll (and should export symbols for example).
 688     ac_cv_prog_cc_pic='-DDLL_EXPORT'
 689     ;;
 690   darwin* | rhapsody*)
 691     # PIC is the default on this platform
 692     # Common symbols not allowed in MH_DYLIB files
 693     lt_cv_prog_cc_pic='-fno-common'
 694     ;;
 695   *djgpp*)
 696     # DJGPP does not support shared libraries at all
 697     ac_cv_prog_cc_pic=
 698     ;;
 699   sysv4*MP*)
 700     if test -d /usr/nec; then
 701       ac_cv_prog_cc_pic=-Kconform_pic
 702     fi
 703     ;;
 704   *)
 705     ac_cv_prog_cc_pic='-fPIC'
 706     ;;
 707   esac
 708 else
 709   case $host_os in
 710     aix4* | aix5*)
 711       # All AIX code is PIC.
 712       if test "$host_cpu" = ia64; then
 713         # AIX 5 now supports IA64 processor
 714         lt_cv_prog_cc_static='-Bstatic'
 715       else
 716         lt_cv_prog_cc_static='-bnso -bI:/lib/syscalls.exp'
 717       fi
 718       ;;
 719     chorus*)
 720       case $cc_basename in
 721       cxch68)
 722         # Green Hills C++ Compiler
 723         # 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"
 724         ;;
 725       esac
 726       ;;
 727     dgux*)
 728       case $cc_basename in
 729         ec++)
 730           ac_cv_prog_cc_pic='-KPIC'
 731           ;;
 732         ghcx)
 733           # Green Hills C++ Compiler
 734           ac_cv_prog_cc_pic='-pic'
 735           ;;
 736         *)
 737           ;;
 738       esac
 739       ;;
 740     freebsd*)
 741       # FreeBSD uses GNU C++
 742       ;;
 743     hpux9* | hpux10* | hpux11*)
 744       case $cc_basename in
 745         CC)
 746           ac_cv_prog_cc_wl='-Wl,'
 747           ac_cv_prog_cc_static="${ac_cv_prog_cc_wl}-a ${ac_cv_prog_cc_wl}archive"
 748           ac_cv_prog_cc_pic='+Z'
 749           ;;
 750         aCC)
 751           ac_cv_prog_cc_wl='-Wl,'
 752           ac_cv_prog_cc_static="${ac_cv_prog_cc_wl}-a ${ac_cv_prog_cc_wl}archive"
 753           ac_cv_prog_cc_pic='+Z'
 754           ;;
 755         *)
 756           ;;
 757       esac
 758       ;;
 759     irix5* | irix6*)
 760       case $cc_basename in
 761         CC)
 762           ac_cv_prog_cc_wl='-Wl,'
 763           ac_cv_prog_cc_static='-non_shared'
 764           ac_cv_prog_cc_pic='-KPIC'
 765           ;;
 766         *)
 767           ;;
 768       esac
 769       ;;
 770     linux*)
 771       case $cc_basename in
 772         KCC)
 773           # KAI C++ Compiler
 774           ac_cv_prog_cc_wl='--backend -Wl,'
 775           ac_cv_prog_cc_pic='-fPIC'
 776           ;;
 777         cxx)
 778           # Compaq C++
 779           # Make sure the PIC flag is empty.  It appears that all Alpha
 780           # Linux and Compaq Tru64 Unix objects are PIC.
 781           ac_cv_prog_cc_pic=
 782           ac_cv_prog_cc_static='-non_shared'
 783           ;;
 784         *)
 785           ;;
 786       esac
 787       ;;
 788     lynxos*)
 789       ;;
 790     m88k*)
 791       ;;
 792     mvs*)
 793       case $cc_basename in
 794         cxx)
 795           ac_cv_prog_cc_pic='-W c,exportall'
 796           ;;
 797         *)
 798           ;;
 799       esac
 800       ;;
 801     netbsd*)
 802       ;;
 803     osf3* | osf4* | osf5*)
 804       case $cc_basename in
 805         KCC)
 806           ac_cv_prog_cc_wl='--backend -Wl,'
 807           ;;
 808         RCC)
 809           # Rational C++ 2.4.1
 810           ac_cv_prog_cc_pic='-pic'
 811           ;;
 812         cxx)
 813           # Digital/Compaq C++
 814           ac_cv_prog_cc_wl='-Wl,'
 815           # Make sure the PIC flag is empty.  It appears that all Alpha
 816           # Linux and Compaq Tru64 Unix objects are PIC.
 817           ac_cv_prog_cc_pic=
 818           ac_cv_prog_cc_static='-non_shared'
 819           ;;
 820         *)
 821           ;;
 822       esac
 823       ;;
 824     psos*)
 825       ;;
 826     sco*)
 827       case $cc_basename in
 828         CC)
 829           ac_cv_prog_cc_pic='-fPIC'
 830           ;;
 831         *)
 832           ;;
 833       esac
 834       ;;
 835     solaris*)
 836       case $cc_basename in
 837         CC)
 838           # Sun C++ 4.2, 5.x and Centerline C++
 839           ac_cv_prog_cc_pic='-KPIC'
 840           ac_cv_prog_cc_static='-Bstatic'
 841           ac_cv_prog_cc_wl='-Qoption ld '
 842           ;;
 843         gcx)
 844           # Green Hills C++ Compiler
 845           ac_cv_prog_cc_pic='-PIC'
 846           ;;
 847         *)
 848           ;;
 849       esac
 850       ;;
 851     sunos4*)
 852       case $cc_basename in
 853         CC)
 854           # Sun C++ 4.x
 855           ac_cv_prog_cc_pic='-pic'
 856           ac_cv_prog_cc_static='-Bstatic'
 857           ;;
 858         lcc)
 859           # Lucid
 860           ac_cv_prog_cc_pic='-pic'
 861           ;;
 862         *)
 863           ;;
 864       esac
 865       ;;
 866     tandem*)
 867       case $cc_basename in
 868         NCC)
 869           # NonStop-UX NCC 3.20
 870           ac_cv_prog_cc_pic='-KPIC'
 871           ;;
 872         *)
 873           ;;
 874       esac
 875       ;;
 876     unixware*)
 877       ;;
 878     vxworks*)
 879       ;;
 880     *)
 881       ac_cv_prog_cc_can_build_shared=no
 882       ;;
 883   esac
 884 fi
 885
 886 case "$host_os" in
 887     # Platforms which do not suport PIC and -DPIC is meaningless
 888     # on them:
 889     *djgpp*)
 890       ac_cv_prog_cc_pic=
 891       ;;
 892     *)
 893       ac_cv_prog_cc_pic="$ac_cv_prog_cc_pic -DPIC"
 894       ;;
 895 esac
 896
 897
 898 # Figure out "hidden" C++ library dependencies from verbose
 899 # compiler output whening linking a shared library.
 900 cat > conftest.$ac_ext <<EOF
 901 class Foo
 902 {
 903 public:
 904   Foo (void) { a = 0; }
 905 private:
 906   int a;
 907 };
 908 EOF
 909
 910
 911 if (eval $ac_compile) 2>&5; then
 912   # Parse the compiler output and extract the necessary
 913   # objects, libraries and library flags.
 914
 915   # Sentinel used to keep track of whether or not we are before
 916   # the conftest object file.
 917   pre_test_object_deps_done=no
 918
 919   for p in `eval $output_verbose_link_cmds`; do
 920
 921     case $p in
 922
 923     -L* | -R* | -l*)
 924        # Some compilers place space between "-{L,R}" and the path.
 925        # Remove the space.
 926        if test $p = "-L" \
 927           || test $p = "-R"; then
 928          prev=$p
 929          continue
 930        else
 931          prev=
 932        fi
 933
 934        if test "$pre_test_object_deps_done" = no; then
 935          case $p in
 936          -L* | -R*)
 937            # Internal compiler library paths should come after those
 938            # provided the user.  The postdeps already come after the
 939            # user supplied libs so there is no need to process them.
 940            if test -z "$compiler_lib_search_path"; then
 941              compiler_lib_search_path="${prev}${p}"
 942            else
 943              compiler_lib_search_path="${compiler_lib_search_path} ${prev}${p}"
 944            fi
 945            ;;
 946          # The "-l" case would never come before the object being
 947          # linked, so don't bother handling this case.
 948          esac
 949        else
 950          if test -z "$postdeps"; then
 951            postdeps="${prev}${p}"
 952          else
 953            postdeps="${postdeps} ${prev}${p}"
 954          fi
 955        fi
 956        ;;
 957
 958     *.$objext)
 959        # This assumes that the test object file only shows up
 960        # once in the compiler output.
 961        if test "$p" = "conftest.$objext"; then
 962          pre_test_object_deps_done=yes
 963          continue
 964        fi
 965
 966        if test "$pre_test_object_deps_done" = no; then
 967          if test -z "$predep_objects"; then
 968            predep_objects="$p"
 969          else
 970            predep_objects="$predep_objects $p"
 971          fi
 972        else
 973          if test -z "$postdep_objects"; then
 974            postdep_objects="$p"
 975          else
 976            postdep_objects="$postdep_objects $p"
 977          fi
 978        fi
 979        ;;
 980
 981     *) ;; # Ignore the rest.
 982
 983     esac
 984   done
 985
 986   # Clean up.
 987   rm -f a.out
 988 else
 989   echo "ltcf-cxx.sh: error: problem compiling test program"
 990 fi
 991
 992 $rm -f confest.$objext
 993
 994 case " $postdeps " in
 995 *" -lc "*) need_lc=no ;;
 996 *) need_lc=yes ;;
 997 esac