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 $cc_basename in
 220       *)
 221         # FIXME: insert proper C++ library support
 222         ld_shlibs=no
 223         ;;
 224     esac
 225     ;;
 226
 227   darwin* | rhapsody*)
 228     case "$host_os" in
 229         rhapsody* | darwin1.[[012]])
 230             allow_undefined_flag='-undefined suppress'
 231         ;;
 232         *) # Darwin 1.3 on
 233             if test -z ${MACOSX_DEPLOYMENT_TARGET} ; then
 234                 allow_undefined_flag='-flat_namespace -undefined suppress'
 235       else
 236         case ${MACOSX_DEPLOYMENT_TARGET} in
 237             10.[[012]])
 238                 allow_undefined_flag='-flat_namespace -undefined suppress'
 239             ;;
 240             10.*)
 241                 allow_undefined_flag='-undefined dynamic_lookup'
 242             ;;
 243         esac
 244     fi
 245     ;;
 246     esac
 247     # Disable shared library build on OS-X older than 10.3.
 248     case $host_os in
 249         darwin[1-6]*)
 250             can_build_shared=no
 251             ;;
 252         darwin7*)
 253             can_build_shared=yes
 254             ;;
 255     esac
 256     output_verbose_link_cmd='echo'
 257
 258     archive_cmds='$CXX -dynamiclib $allow_undefined_flag -o $lib $libobjs $deplibs $compiler_flags -install_name $rpath/$soname $verstring'
 259     module_cmds='$CC ${wl}-bind_at_load $allow_undefined_flag -o $lib -bundle $libobjs $deplibs$compiler_flags'
 260
 261     # Don't fix this by using the ld -exported_symbols_list flag,
 262     # it doesn't exist in older darwin ld's
 263     archive_expsym_cmds='sed -e "s,#.*,," -e "s,^[    ]*,," -e "s,^\(..*\),_&," < $export_symbols > $output_objdir/${libname}-symbols.expsym~$CC -r ${wl}-bind_at_load -keep_private_externs -nostdlib -o ${lib}-master.o $libobjs~$CC -dynamiclib $allow_undefined_flag -o $lib ${lib}-master.o $deplibs $compiler_flags -install_name $rpath/$soname $verstring~nmedit -s $output_objdir/${libname}-symbols.expsym ${lib}'
 264     module_expsym_cmds='sed -e "s,#.*,," -e "s,^[    ]*,," -e "s,^\(..*\),_&," < $export_symbols > $output_objdir/${libname}-symbols.expsym~$CC $allow_undefined_flag  -o $lib -bundle $libobjs $deplibs$compiler_flags~nmedit -s $output_objdir/${libname}-symbols.expsym ${lib}'
 265     hardcode_direct=no
 266     hardcode_automatic=yes
 267     hardcode_shlibpath_var=unsupported
 268     link_all_deplibs=yes
 269     ;;
 270
 271   dgux*)
 272     case $cc_basename in
 273       ec++)
 274         # FIXME: insert proper C++ library support
 275         ld_shlibs=no
 276         ;;
 277       ghcx)
 278         # Green Hills C++ Compiler
 279         # FIXME: insert proper C++ library support
 280         ld_shlibs=no
 281         ;;
 282       *)
 283         # FIXME: insert proper C++ library support
 284         ld_shlibs=no
 285         ;;
 286     esac
 287     ;;
 288   freebsd[12]*)
 289     # C++ shared libraries reported to be fairly broken before switch to ELF
 290     ld_shlibs=no
 291     ;;
 292   freebsd* | kfreebsd*-gnu)
 293     # FreeBSD 3 and later use GNU C++ and GNU ld with standard ELF
 294     # conventions
 295     ld_shlibs=yes
 296     ;;
 297   gnu*)
 298     ;;
 299   hpux*)
 300     if test $with_gnu_ld = no; then
 301       case "$host_cpu" in
 302         ia64*)
 303           hardcode_libdir_flag_spec='-L$libdir'
 304           hardcode_shlibpath_var=no ;;
 305         *)
 306           hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir' ;;
 307       esac
 308       hardcode_direct=yes
 309       hardcode_libdir_separator=:
 310       export_dynamic_flag_spec='${wl}-E'
 311     fi
 312     hardcode_minus_L=yes # Not in the search PATH, but as the default
 313                          # location of the library.
 314
 315     case $cc_basename in
 316       CC)
 317         # FIXME: insert proper C++ library support
 318         ld_shlibs=no
 319         ;;
 320       aCC)
 321         case $host_os in
 322         hpux9*) archive_cmds='$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 $lib' ;;
 323         *) archive_cmds='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' ;;
 324         esac
 325         # Commands to make compiler produce verbose output that lists
 326         # what "hidden" libraries, object files and flags are used when
 327         # linking a shared library.
 328         #
 329         # There doesn't appear to be a way to prevent this compiler from
 330         # explicitly linking system object files so we need to strip them
 331         # from the output so that they don't get included in the library
 332         # dependencies.
 333         output_verbose_link_cmd='templist=`($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'
 334         ;;
 335       *)
 336         if test $with_gcc = yes; then
 337           if test $with_gnu_ld = no; then
 338             case "$host_os" in
 339             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 $lib' ;;
 340             *)
 341               case "$host_cpu" in
 342                 ia64*)
 343                   archive_cmds='$LD -b +h $soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags' ;;
 344                 *)
 345                   archive_cmds='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' ;;
 346               esac
 347               ;;
 348             esac
 349           fi
 350         else
 351           # FIXME: insert proper C++ library support
 352           ld_shlibs=no
 353         fi
 354         ;;
 355     esac
 356     ;;
 357   irix5* | irix6*)
 358     case $cc_basename in
 359       CC)
 360         # SGI C++
 361         archive_cmds='$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 $lib'
 362
 363         # Archives containing C++ object files must be created using
 364         # "CC -ar", where "CC" is the IRIX C++ compiler.  This is
 365         # necessary to make sure instantiated templates are included
 366         # in the archive.
 367         old_archive_cmds='$CC -ar -WR,-u -o $oldlib $oldobjs'
 368         ;;
 369       *)
 370         if test "$with_gcc" = yes; then
 371           if test "$with_gnu_ld" = no; then
 372             archive_cmds='$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 $lib'
 373           else
 374             archive_cmds='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && echo -set_version $verstring` -o $lib'
 375           fi
 376         fi
 377         hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 378         hardcode_libdir_separator=:
 379         link_all_deplibs=yes
 380         ;;
 381     esac
 382     ;;
 383   linux*)
 384     case $cc_basename in
 385       KCC)
 386         # Kuck and Associates, Inc. (KAI) C++ Compiler
 387
 388         # KCC will only create a shared library if the output file
 389         # ends with ".so" (or ".sl" for HP-UX), so rename the library
 390         # to its proper name (with version) after linking.
 391         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'
 392         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 $lib'
 393
 394         # Commands to make compiler produce verbose output that lists
 395         # what "hidden" libraries, object files and flags are used when
 396         # linking a shared library.
 397         #
 398         # There doesn't appear to be a way to prevent this compiler from
 399         # explicitly linking system object files so we need to strip them
 400         # from the output so that they don't get included in the library
 401         # dependencies.
 402         output_verbose_link_cmd='templist=`$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 $list'
 403
 404         hardcode_libdir_flag_spec='${wl}--rpath,$libdir'
 405         export_dynamic_flag_spec='${wl}--export-dynamic'
 406
 407         # Archives containing C++ object files must be created using
 408         # "CC -Bstatic", where "CC" is the KAI C++ compiler.
 409         old_archive_cmds='$CC -Bstatic -o $oldlib $oldobjs'
 410         ;;
 411       cxx)
 412         # Compaq C++
 413         archive_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
 414         archive_expsym_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname  -o $lib ${wl}-retain-symbols-file $wl$export_symbols'
 415
 416         runpath_var=LD_RUN_PATH
 417         hardcode_libdir_flag_spec='-rpath $libdir'
 418         hardcode_libdir_separator=:
 419
 420         # Commands to make compiler produce verbose output that lists
 421         # what "hidden" libraries, object files and flags are used when
 422         # linking a shared library.
 423         #
 424         # There doesn't appear to be a way to prevent this compiler from
 425         # explicitly linking system object files so we need to strip them
 426         # from the output so that they don't get included in the library
 427         # dependencies.
 428         output_verbose_link_cmd='templist=`$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'
 429         ;;
 430     esac
 431     ;;
 432   lynxos*)
 433     # FIXME: insert proper C++ library support
 434     ld_shlibs=no
 435     ;;
 436   m88k*)
 437     # FIXME: insert proper C++ library support
 438     ld_shlibs=no
 439     ;;
 440   mvs*)
 441     case $cc_basename in
 442       cxx)
 443         # FIXME: insert proper C++ library support
 444         ld_shlibs=no
 445         ;;
 446       *)
 447         # FIXME: insert proper C++ library support
 448         ld_shlibs=no
 449         ;;
 450     esac
 451     ;;
 452   netbsd* | knetbsd*-gnu)
 453     # NetBSD uses g++ - do we need to do anything?
 454     ;;
 455   osf3*)
 456     case $cc_basename in
 457       KCC)
 458         # Kuck and Associates, Inc. (KAI) C++ Compiler
 459
 460         # KCC will only create a shared library if the output file
 461         # ends with ".so" (or ".sl" for HP-UX), so rename the library
 462         # to its proper name (with version) after linking.
 463         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 $lib'
 464
 465         hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
 466         hardcode_libdir_separator=:
 467
 468         # Archives containing C++ object files must be created using
 469         # "CC -Bstatic", where "CC" is the KAI C++ compiler.
 470         old_archive_cmds='$CC -Bstatic -o $oldlib $oldobjs'
 471
 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=' ${wl}-expect_unresolved ${wl}\*'
 480         archive_cmds='$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 $lib'
 481
 482         hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 483         hardcode_libdir_separator=:
 484
 485         # Commands to make compiler produce verbose output that lists
 486         # what "hidden" libraries, object files and flags are used when
 487         # linking a shared library.
 488         #
 489         # There doesn't appear to be a way to prevent this compiler from
 490         # explicitly linking system object files so we need to strip them
 491         # from the output so that they don't get included in the library
 492         # dependencies.
 493         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 $list'
 494         ;;
 495       *)
 496         if test "$with_gcc" = yes && test "$with_gnu_ld" = no; then
 497           allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 498           archive_cmds='$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 $lib'
 499
 500           hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 501           hardcode_libdir_separator=:
 502
 503           # Commands to make compiler produce verbose output that lists
 504           # what "hidden" libraries, object files and flags are used when
 505           # linking a shared library.
 506           output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"'
 507     else
 508           # FIXME: insert proper C++ library support
 509           ld_shlibs=no
 510     fi
 511         ;;
 512     esac
 513     ;;
 514   osf4* | osf5*)
 515     case $cc_basename in
 516       KCC)
 517         # Kuck and Associates, Inc. (KAI) C++ Compiler
 518
 519         # KCC will only create a shared library if the output file
 520         # ends with ".so" (or ".sl" for HP-UX), so rename the library
 521         # to its proper name (with version) after linking.
 522         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 $lib'
 523
 524         hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
 525         hardcode_libdir_separator=:
 526
 527         # Archives containing C++ object files must be created using
 528         # the KAI C++ compiler.
 529         old_archive_cmds='$CC -o $oldlib $oldobjs'
 530         ;;
 531       RCC)
 532         # Rational C++ 2.4.1
 533         # FIXME: insert proper C++ library support
 534         ld_shlibs=no
 535         ;;
 536       cxx)
 537         allow_undefined_flag=' -expect_unresolved \*'
 538         archive_cmds='$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'
 539         archive_expsym_cmds='for i in `cat $export_symbols`; do printf "-exported_symbol " >> $lib.exp; echo "\$i" >> $lib.exp; done~
 540           echo "-hidden">> $lib.exp~
 541           $CC -shared$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~
 542           $rm $lib.exp'
 543
 544         hardcode_libdir_flag_spec='-rpath $libdir'
 545         hardcode_libdir_separator=:
 546
 547         # Commands to make compiler produce verbose output that lists
 548         # what "hidden" libraries, object files and flags are used when
 549         # linking a shared library.
 550         #
 551         # There doesn't appear to be a way to prevent this compiler from
 552         # explicitly linking system object files so we need to strip them
 553         # from the output so that they don't get included in the library
 554         # dependencies.
 555         output_verbose_link_cmd='templist=`$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 $list'
 556         ;;
 557       *)
 558         if test "$with_gcc" = yes && test "$with_gnu_ld" = no; then
 559           allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 560           archive_cmds='$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 $lib'
 561
 562           hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 563           hardcode_libdir_separator=:
 564
 565           # Commands to make compiler produce verbose output that lists
 566           # what "hidden" libraries, object files and flags are used when
 567           # linking a shared library.
 568           output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"'
 569     else
 570           # FIXME: insert proper C++ library support
 571           ld_shlibs=no
 572     fi
 573         ;;
 574     esac
 575     ;;
 576   psos*)
 577     # FIXME: insert proper C++ library support
 578     ld_shlibs=no
 579     ;;
 580   sco*)
 581     case $cc_basename in
 582       CC)
 583         # FIXME: insert proper C++ library support
 584         ld_shlibs=no
 585         ;;
 586       *)
 587         # FIXME: insert proper C++ library support
 588         ld_shlibs=no
 589         ;;
 590     esac
 591     ;;
 592   sunos4*)
 593     case $cc_basename in
 594       CC)
 595         # Sun C++ 4.x
 596         # FIXME: insert proper C++ library support
 597         ld_shlibs=no
 598         ;;
 599       lcc)
 600         # Lucid
 601         # FIXME: insert proper C++ library support
 602         ld_shlibs=no
 603         ;;
 604       *)
 605         # FIXME: insert proper C++ library support
 606         ld_shlibs=no
 607         ;;
 608     esac
 609     ;;
 610   solaris*)
 611     case $cc_basename in
 612       CC)
 613         # Sun C++ 4.2, 5.x and Centerline C++
 614         no_undefined_flag=' -zdefs'
 615         archive_cmds='$CC -G${allow_undefined_flag} -nolib -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
 616         archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 617         $CC -G${allow_undefined_flag} -nolib ${wl}-M ${wl}$lib.exp -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$rm $lib.exp'
 618
 619         hardcode_libdir_flag_spec='-R$libdir'
 620         hardcode_shlibpath_var=no
 621         case $host_os in
 622           solaris2.[0-5] | solaris2.[0-5].*) ;;
 623           *)
 624             # The C++ compiler is used as linker so we must use $wl
 625             # flag to pass the commands to the underlying system
 626             # linker.
 627             # Supported since Solaris 2.6 (maybe 2.5.1?)
 628             whole_archive_flag_spec='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
 629             ;;
 630         esac
 631         link_all_deplibs=yes
 632
 633         # Commands to make compiler produce verbose output that lists
 634         # what "hidden" libraries, object files and flags are used when
 635         # linking a shared library.
 636         #
 637         # There doesn't appear to be a way to prevent this compiler from
 638         # explicitly linking system object files so we need to strip them
 639         # from the output so that they don't get included in the library
 640         # dependencies.
 641         output_verbose_link_cmd='templist=`$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 $list'
 642
 643         # Archives containing C++ object files must be created using
 644         # "CC -xar", where "CC" is the Sun C++ compiler.  This is
 645         # necessary to make sure instantiated templates are included
 646         # in the archive.
 647         old_archive_cmds='$CC -xar -o $oldlib $oldobjs'
 648         ;;
 649       gcx)
 650         # Green Hills C++ Compiler
 651         archive_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
 652
 653         # The C++ compiler must be used to create the archive.
 654         old_archive_cmds='$CC $LDFLAGS -archive -o $oldlib $oldobjs'
 655         ;;
 656       *)
 657         # GNU C++ compiler with Solaris linker
 658         if test "$with_gcc" = yes && test "$with_gnu_ld" = no; then
 659           no_undefined_flag=' ${wl}-z ${wl}defs'
 660           if $CC --version | egrep -v '^2\.7' > /dev/null; then
 661             archive_cmds='$CC -shared -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
 662             archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 663                 $CC -shared -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$rm $lib.exp'
 664
 665             # Commands to make compiler produce verbose output that lists
 666             # what "hidden" libraries, object files and flags are used when
 667             # linking a shared library.
 668             output_verbose_link_cmd="$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep \"\-L\""
 669           else
 670             # g++ 2.7 appears to require `-G' NOT `-shared' on this
 671             # platform.
 672             archive_cmds='$CC -G -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
 673             archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 674                 $CC -G -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$rm $lib.exp'
 675
 676             # Commands to make compiler produce verbose output that lists
 677             # what "hidden" libraries, object files and flags are used when
 678             # linking a shared library.
 679             output_verbose_link_cmd="$CC -G $CFLAGS -v conftest.$objext 2>&1 | egrep \"\-L\""
 680           fi
 681
 682           hardcode_libdir_flag_spec='${wl}-R $wl$libdir'
 683         fi
 684         ;;
 685     esac
 686     ;;
 687   tandem*)
 688     case $cc_basename in
 689       NCC)
 690         # NonStop-UX NCC 3.20
 691         # FIXME: insert proper C++ library support
 692         ld_shlibs=no
 693         ;;
 694       *)
 695         # FIXME: insert proper C++ library support
 696         ld_shlibs=no
 697         ;;
 698     esac
 699     ;;
 700   tpf*)
 701     ld_shlibs=yes
 702     ;;
 703   unixware*)
 704     # FIXME: insert proper C++ library support
 705     ld_shlibs=no
 706     ;;
 707   vxworks*)
 708     # FIXME: insert proper C++ library support
 709     ld_shlibs=no
 710     ;;
 711   *)
 712     # FIXME: insert proper C++ library support
 713     ld_shlibs=no
 714     ;;
 715 esac
 716
 717
 718 ## Compiler Characteristics: PIC flags, static flags, etc
 719
 720 # We don't use cached values here since only the C compiler
 721 # characteristics should be cached.
 722 ac_cv_prog_cc_pic=
 723 ac_cv_prog_cc_shlib=
 724 ac_cv_prog_cc_wl=
 725 ac_cv_prog_cc_static=
 726 ac_cv_prog_cc_no_builtin=
 727 ac_cv_prog_cc_can_build_shared=$can_build_shared
 728
 729 ac_cv_prog_cc_pic_works=
 730 ac_cv_prog_cc_static_works=
 731
 732 if test "$with_gcc" = yes; then
 733   ac_cv_prog_cc_wl='-Wl,'
 734   ac_cv_prog_cc_static='-static'
 735
 736   case $host_os in
 737   aix*)
 738     # All AIX code is PIC.
 739     if test "$host_cpu" = ia64; then
 740       # AIX 5 now supports IA64 processor
 741       lt_cv_prog_cc_static='-Bstatic'
 742     else
 743       lt_cv_prog_cc_static='-bnso -bI:/lib/syscalls.exp'
 744     fi
 745     ;;
 746   amigaos*)
 747     # FIXME: we need at least 68020 code to build shared libraries, but
 748     # adding the `-m68020' flag to GCC prevents building anything better,
 749     # like `-m68040'.
 750     ac_cv_prog_cc_pic='-m68020 -resident32 -malways-restore-a4'
 751     ;;
 752   beos* | irix5* | irix6* | osf3* | osf4* | osf5*)
 753     # PIC is the default for these OSes.
 754     ;;
 755   cygwin* | mingw* | os2*)
 756     # This hack is so that the source file can tell whether it is being
 757     # built for inclusion in a dll (and should export symbols for example).
 758     ac_cv_prog_cc_pic='-DDLL_EXPORT'
 759     ;;
 760   darwin* | rhapsody*)
 761     # PIC is the default on this platform
 762     # Common symbols not allowed in MH_DYLIB files
 763     ac_cv_prog_cc_pic='-fno-common'
 764     ;;
 765   *djgpp*)
 766     # DJGPP does not support shared libraries at all
 767     ac_cv_prog_cc_pic=
 768     ;;
 769   sysv4*MP*)
 770     if test -d /usr/nec; then
 771       ac_cv_prog_cc_pic=-Kconform_pic
 772     fi
 773     ;;
 774   *)
 775     ac_cv_prog_cc_pic='-fPIC'
 776     ;;
 777   esac
 778 else
 779   case $host_os in
 780     aix4* | aix5*)
 781       # All AIX code is PIC.
 782       if test "$host_cpu" = ia64; then
 783         # AIX 5 now supports IA64 processor
 784         lt_cv_prog_cc_static='-Bstatic'
 785       else
 786         lt_cv_prog_cc_static='-bnso -bI:/lib/syscalls.exp'
 787       fi
 788       ;;
 789     chorus*)
 790       case $cc_basename in
 791       cxch68)
 792         # Green Hills C++ Compiler
 793         # 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"
 794         ;;
 795       esac
 796       ;;
 797     dgux*)
 798       case $cc_basename in
 799         ec++)
 800           ac_cv_prog_cc_pic='-KPIC'
 801           ;;
 802         ghcx)
 803           # Green Hills C++ Compiler
 804           ac_cv_prog_cc_pic='-pic'
 805           ;;
 806         *)
 807           ;;
 808       esac
 809       ;;
 810     freebsd* | kfreebsd*-gnu)
 811       # FreeBSD uses GNU C++
 812       ;;
 813     gnu*)
 814       ;;
 815     hpux9* | hpux10* | hpux11*)
 816       case $cc_basename in
 817         CC)
 818           ac_cv_prog_cc_wl='-Wl,'
 819           ac_cv_prog_cc_static="${ac_cv_prog_cc_wl}-a ${ac_cv_prog_cc_wl}archive"
 820           ac_cv_prog_cc_pic='+Z'
 821           ;;
 822         aCC)
 823           ac_cv_prog_cc_wl='-Wl,'
 824           ac_cv_prog_cc_static="${ac_cv_prog_cc_wl}-a ${ac_cv_prog_cc_wl}archive"
 825           ac_cv_prog_cc_pic='+Z'
 826           ;;
 827         *)
 828           ;;
 829       esac
 830       ;;
 831     irix5* | irix6*)
 832       case $cc_basename in
 833         CC)
 834           ac_cv_prog_cc_wl='-Wl,'
 835           ac_cv_prog_cc_static='-non_shared'
 836           ac_cv_prog_cc_pic='-KPIC'
 837           ;;
 838         *)
 839           ;;
 840       esac
 841       ;;
 842     linux*)
 843       case $cc_basename in
 844         KCC)
 845           # KAI C++ Compiler
 846           ac_cv_prog_cc_wl='--backend -Wl,'
 847           ac_cv_prog_cc_pic='-fPIC'
 848           ;;
 849         cxx)
 850           # Compaq C++
 851           # Make sure the PIC flag is empty.  It appears that all Alpha
 852           # Linux and Compaq Tru64 Unix objects are PIC.
 853           ac_cv_prog_cc_pic=
 854           ac_cv_prog_cc_static='-non_shared'
 855           ;;
 856         *)
 857           ;;
 858       esac
 859       ;;
 860     lynxos*)
 861       ;;
 862     m88k*)
 863       ;;
 864     mvs*)
 865       case $cc_basename in
 866         cxx)
 867           ac_cv_prog_cc_pic='-W c,exportall'
 868           ;;
 869         *)
 870           ;;
 871       esac
 872       ;;
 873     netbsd*)
 874       ;;
 875     osf3* | osf4* | osf5*)
 876       case $cc_basename in
 877         KCC)
 878           ac_cv_prog_cc_wl='--backend -Wl,'
 879           ;;
 880         RCC)
 881           # Rational C++ 2.4.1
 882           ac_cv_prog_cc_pic='-pic'
 883           ;;
 884         cxx)
 885           # Digital/Compaq C++
 886           ac_cv_prog_cc_wl='-Wl,'
 887           # Make sure the PIC flag is empty.  It appears that all Alpha
 888           # Linux and Compaq Tru64 Unix objects are PIC.
 889           ac_cv_prog_cc_pic=
 890           ac_cv_prog_cc_static='-non_shared'
 891           ;;
 892         *)
 893           ;;
 894       esac
 895       ;;
 896     psos*)
 897       ;;
 898     sco*)
 899       case $cc_basename in
 900         CC)
 901           ac_cv_prog_cc_pic='-fPIC'
 902           ;;
 903         *)
 904           ;;
 905       esac
 906       ;;
 907     solaris*)
 908       case $cc_basename in
 909         CC)
 910           # Sun C++ 4.2, 5.x and Centerline C++
 911           ac_cv_prog_cc_pic='-KPIC'
 912           ac_cv_prog_cc_static='-Bstatic'
 913           ac_cv_prog_cc_wl='-Qoption ld '
 914           ;;
 915         gcx)
 916           # Green Hills C++ Compiler
 917           ac_cv_prog_cc_pic='-PIC'
 918           ;;
 919         *)
 920           ;;
 921       esac
 922       ;;
 923     sunos4*)
 924       case $cc_basename in
 925         CC)
 926           # Sun C++ 4.x
 927           ac_cv_prog_cc_pic='-pic'
 928           ac_cv_prog_cc_static='-Bstatic'
 929           ;;
 930         lcc)
 931           # Lucid
 932           ac_cv_prog_cc_pic='-pic'
 933           ;;
 934         *)
 935           ;;
 936       esac
 937       ;;
 938     tandem*)
 939       case $cc_basename in
 940         NCC)
 941           # NonStop-UX NCC 3.20
 942           ac_cv_prog_cc_pic='-KPIC'
 943           ;;
 944         *)
 945           ;;
 946       esac
 947       ;;
 948     unixware*)
 949       ;;
 950     vxworks*)
 951       ;;
 952     *)
 953       ac_cv_prog_cc_can_build_shared=no
 954       ;;
 955   esac
 956 fi
 957
 958 case "$host_os" in
 959     # Platforms which do not suport PIC and -DPIC is meaningless
 960     # on them:
 961     *djgpp*)
 962       ac_cv_prog_cc_pic=
 963       ;;
 964     *)
 965       ac_cv_prog_cc_pic="$ac_cv_prog_cc_pic -DPIC"
 966       ;;
 967 esac
 968
 969
 970 # Figure out "hidden" C++ library dependencies from verbose
 971 # compiler output whening linking a shared library.
 972 cat > conftest.$ac_ext <<EOF
 973 class Foo
 974 {
 975 public:
 976   Foo (void) { a = 0; }
 977 private:
 978   int a;
 979 };
 980 EOF
 981
 982
 983 if (eval $ac_compile) 2>&5; then
 984   # Parse the compiler output and extract the necessary
 985   # objects, libraries and library flags.
 986
 987   # Sentinel used to keep track of whether or not we are before
 988   # the conftest object file.
 989   pre_test_object_deps_done=no
 990
 991   for p in `eval $output_verbose_link_cmd`; do
 992
 993     case $p in
 994
 995     -L* | -R* | -l*)
 996        # Some compilers place space between "-{L,R}" and the path.
 997        # Remove the space.
 998        if test $p = "-L" \
 999           || test $p = "-R"; then
1000          prev=$p
1001          continue
1002        else
1003          prev=
1004        fi
1005
1006        if test "$pre_test_object_deps_done" = no; then
1007          case $p in
1008          -L* | -R*)
1009            # Internal compiler library paths should come after those
1010            # provided the user.  The postdeps already come after the
1011            # user supplied libs so there is no need to process them.
1012            if test -z "$compiler_lib_search_path"; then
1013              compiler_lib_search_path="${prev}${p}"
1014            else
1015              compiler_lib_search_path="${compiler_lib_search_path} ${prev}${p}"
1016            fi
1017            ;;
1018          # The "-l" case would never come before the object being
1019          # linked, so don't bother handling this case.
1020          esac
1021        else
1022          if test -z "$postdeps"; then
1023            postdeps="${prev}${p}"
1024          else
1025            postdeps="${postdeps} ${prev}${p}"
1026          fi
1027        fi
1028        ;;
1029
1030     *.$objext)
1031        # This assumes that the test object file only shows up
1032        # once in the compiler output.
1033        if test "$p" = "conftest.$objext"; then
1034          pre_test_object_deps_done=yes
1035          continue
1036        fi
1037
1038        if test "$pre_test_object_deps_done" = no; then
1039          if test -z "$predep_objects"; then
1040            predep_objects="$p"
1041          else
1042            predep_objects="$predep_objects $p"
1043          fi
1044        else
1045          if test -z "$postdep_objects"; then
1046            postdep_objects="$p"
1047          else
1048            postdep_objects="$postdep_objects $p"
1049          fi
1050        fi
1051        ;;
1052
1053     *) ;; # Ignore the rest.
1054
1055     esac
1056   done
1057
1058   # Clean up.
1059   rm -f a.out
1060 else
1061   echo "ltcf-cxx.sh: error: problem compiling test program"
1062 fi
1063
1064 $rm -f confest.$objext
1065
1066 case " $postdeps " in
1067 *" -lc "*) need_lc=no ;;
1068 *) need_lc=yes ;;
1069 esac