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 ${allow_undefined_flag} ${wl}-soname $wl$soname -o $lib'
  77     archive_expsym_cmds='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${allow_undefined_flag} ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
  78     no_undefined_flag='${wl}--no-undefined'
  79
  80     hardcode_libdir_flag_spec='${wl}--rpath ${wl}$libdir'
  81     export_dynamic_flag_spec='${wl}--export-dynamic'
  82
  83     # If archive_cmds runs LD, not CC, wlarc should be empty
  84     # XXX I think wlarc can be eliminated in ltcf-cxx, but I need to
  85     #     investigate it a little bit more. (MM)
  86     wlarc='${wl}'
  87
  88     # ancient GNU ld didn't support --whole-archive et. al.
  89     if eval "`$CC -print-prog-name=ld` --help 2>&1" | \
  90         egrep 'no-whole-archive' > /dev/null; then
  91       whole_archive_flag_spec="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
  92     else
  93       whole_archive_flag_spec=
  94     fi
  95   else
  96     with_gnu_ld=no
  97     wlarc=
  98
  99     # A generic and very simple default shared library creation
 100     # command for GNU C++ for the case where it uses the native
 101     # linker, instead of GNU ld.  If possible, this setting should
 102     # overridden to take advantage of the native linker features on
 103     # the platform it is being used on.
 104     archive_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
 105   fi
 106
 107   # Commands to make compiler produce verbose output that lists
 108   # what "hidden" libraries, object files and flags are used when
 109   # linking a shared library.
 110   output_verbose_link_cmds='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"'
 111
 112 else
 113   with_gcc=no
 114   with_gnu_ld=no
 115   wlarc=
 116 fi
 117
 118 # In general, the C++ compiler should always link C++ objects.
 119 case $target in
 120 *aix3* | *aix4* | *aix5*)
 121   # AIX just has to be different, doesn't it? :-\
 122   LD=makeC++SharedLib_r
 123   LDFLAGS="$LDFLAGS -p 0"
 124   ;;
 125 *)
 126   LD="$CC"
 127   LDFLAGS="$LDFLAGS"
 128   ;;
 129 esac
 130
 131
 132 # PORTME: fill in a description of your system's C++ link characteristics
 133 case "$host_os" in
 134   aix3*)
 135     # FIXME: insert proper C++ library support
 136     ld_shlibs=no
 137     ;;
 138   aix4* | aix5*)
 139     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'
 140     # -bexpall does not export symbols beginning with underscore (_)
 141     always_export_symbols=yes
 142     # Exported symbols can be pulled into shared objects from archives
 143     whole_archive_flag_spec=' '
 144     build_libtool_need_lc=yes
 145
 146     # We don't want to build shared libraries on unknown CPU types.
 147     case $host_cpu in
 148     powerpc | rs6000) ;;
 149     *) ld_shlibs=no ;;
 150     esac
 151     ;;
 152   chorus*)
 153     case "$cc_basename" in
 154       *)
 155         # FIXME: insert proper C++ library support
 156         ld_shlibs=no
 157         ;;
 158     esac
 159     ;;
 160   dgux*)
 161     case "$cc_basename" in
 162       ec++)
 163         # FIXME: insert proper C++ library support
 164         ld_shlibs=no
 165         ;;
 166       ghcx)
 167         # Green Hills C++ Compiler
 168         # FIXME: insert proper C++ library support
 169         ld_shlibs=no
 170         ;;
 171       *)
 172         # FIXME: insert proper C++ library support
 173         ld_shlibs=no
 174         ;;
 175     esac
 176     ;;
 177   freebsd[12]*)
 178     # C++ shared libraries reported to be fairly broken before switch to ELF
 179     ld_shlibs=no
 180     ;;
 181   freebsd*)
 182     # FreeBSD 3 and later use GNU C++ and GNU ld with standard ELF
 183     # conventions
 184     ld_shlibs=yes
 185     ;;
 186   hpux*)
 187     case "$cc_basename" in
 188       CC)
 189         # FIXME: insert proper C++ library support
 190         ld_shlibs=no
 191         ;;
 192       aCC)
 193         case "$host_os" in
 194         hpux9*) archive_cmds='$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 $lib' ;;
 195         *) archive_cmds='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' ;;
 196         esac
 197         hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
 198         hardcode_libdir_separator=:
 199         hardcode_direct=yes
 200         hardcode_minus_L=yes # Not in the search PATH, but as the default
 201                              # location of the library.
 202         export_dynamic_flag_spec='${wl}-E'
 203
 204         # Commands to make compiler produce verbose output that lists
 205         # what "hidden" libraries, object files and flags are used when
 206         # linking a shared library.
 207         #
 208         # There doesn't appear to be a way to prevent this compiler from
 209         # explicitly linking system object files so we need to strip them
 210         # from the output so that they don't get included in the library
 211         # dependencies.
 212         output_verbose_link_cmds='templist=`($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 $list'
 213         ;;
 214       *)
 215         # FIXME: insert proper C++ library support
 216         ld_shlibs=no
 217         ;;
 218     esac
 219     ;;
 220   irix5* | irix6*)
 221     case "$cc_basename" in
 222       CC)
 223         # SGI C++
 224         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 $lib'
 225
 226         # Archives containing C++ object files must be created using
 227         # "CC -ar", where "CC" is the IRIX C++ compiler.  This is
 228         # necessary to make sure instantiated templates are included
 229         # in the archive.
 230         old_archive_cmds='$CC -ar -WR,-u -o $oldlib $oldobjs'
 231         ;;
 232       *)
 233         if test "$with_gcc" = yes; then
 234           if test "$with_gnu_ld" = no; then
 235             archive_cmds='$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 $lib'
 236           else
 237             archive_cmds='$LD -shared $predep_objects $libobjs $deplibs $postdep_objects $linker_flags -soname $soname `test -n "$verstring" && echo -set_version $verstring` -o $lib'
 238           fi
 239         fi
 240         hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 241         hardcode_libdir_separator=:
 242         link_all_deplibs=yes
 243         ;;
 244     esac
 245     ;;
 246   linux*)
 247     case "$cc_basename" in
 248       KCC)
 249         # Kuck and Associates, Inc. (KAI) C++ Compiler
 250
 251         # KCC will only create a shared library if the output file
 252         # ends with ".so" (or ".sl" for HP-UX), so rename the library
 253         # to its proper name (with version) after linking.
 254         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'
 255         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 $lib'
 256
 257         # Commands to make compiler produce verbose output that lists
 258         # what "hidden" libraries, object files and flags are used when
 259         # linking a shared library.
 260         #
 261         # There doesn't appear to be a way to prevent this compiler from
 262         # explicitly linking system object files so we need to strip them
 263         # from the output so that they don't get included in the library
 264         # dependencies.
 265         output_verbose_link_cmds='templist=`$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 $list'
 266
 267         hardcode_libdir_flag_spec='${wl}--rpath,$libdir'
 268         export_dynamic_flag_spec='${wl}--export-dynamic'
 269
 270         # Archives containing C++ object files must be created using
 271         # "CC -Bstatic", where "CC" is the KAI C++ compiler.
 272         old_archive_cmds='$CC -Bstatic -o $oldlib $oldobjs'
 273         ;;
 274       cxx)
 275         # Compaq C++
 276         archive_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
 277         archive_expsym_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname  -o $lib ${wl}-retain-symbols-file $wl$export_symbols'
 278
 279         runpath_var=LD_RUN_PATH
 280         hardcode_libdir_flag_spec='-rpath $libdir'
 281         hardcode_libdir_separator=:
 282
 283         # Commands to make compiler produce verbose output that lists
 284         # what "hidden" libraries, object files and flags are used when
 285         # linking a shared library.
 286         #
 287         # There doesn't appear to be a way to prevent this compiler from
 288         # explicitly linking system object files so we need to strip them
 289         # from the output so that they don't get included in the library
 290         # dependencies.
 291         output_verbose_link_cmds='templist=`$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 $list'
 292         ;;
 293     esac
 294     ;;
 295   lynxos*)
 296     # FIXME: insert proper C++ library support
 297     ld_shlibs=no
 298     ;;
 299   m88k*)
 300     # FIXME: insert proper C++ library support
 301     ld_shlibs=no
 302     ;;
 303   mvs*)
 304     case "$cc_basename" in
 305       cxx)
 306         # FIXME: insert proper C++ library support
 307         ld_shlibs=no
 308         ;;
 309       *)
 310         # FIXME: insert proper C++ library support
 311         ld_shlibs=no
 312         ;;
 313     esac
 314     ;;
 315   netbsd*)
 316     # NetBSD uses g++ - do we need to do anything?
 317     ;;
 318   osf3*)
 319     if test "$with_gcc" = yes && test "$with_gnu_ld" = no; then
 320       allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 321       archive_cmds='$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 $lib'
 322
 323       hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 324       hardcode_libdir_separator=:
 325
 326       # Commands to make compiler produce verbose output that lists
 327       # what "hidden" libraries, object files and flags are used when
 328       # linking a shared library.
 329       output_verbose_link_cmds='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"'
 330     fi
 331
 332     case "$cc_basename" in
 333       KCC)
 334         # Kuck and Associates, Inc. (KAI) C++ Compiler
 335
 336         # KCC will only create a shared library if the output file
 337         # ends with ".so" (or ".sl" for HP-UX), so rename the library
 338         # to its proper name (with version) after linking.
 339         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 $lib'
 340
 341         hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
 342         hardcode_libdir_separator=:
 343
 344         # Archives containing C++ object files must be created using
 345         # "CC -Bstatic", where "CC" is the KAI C++ compiler.
 346         old_archive_cmds='$CC -Bstatic -o $oldlib $oldobjs'
 347
 348         ;;
 349       RCC)
 350         # Rational C++ 2.4.1
 351         # FIXME: insert proper C++ library support
 352         ld_shlibs=no
 353         ;;
 354       cxx)
 355         allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 356         archive_cmds='$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 $lib'
 357
 358         hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 359         hardcode_libdir_separator=:
 360
 361         # Commands to make compiler produce verbose output that lists
 362         # what "hidden" libraries, object files and flags are used when
 363         # linking a shared library.
 364         #
 365         # There doesn't appear to be a way to prevent this compiler from
 366         # explicitly linking system object files so we need to strip them
 367         # from the output so that they don't get included in the library
 368         # dependencies.
 369         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 $list'
 370         ;;
 371       *)
 372         # FIXME: insert proper C++ library support
 373         ld_shlibs=no
 374         ;;
 375     esac
 376     ;;
 377   osf4* | osf5*)
 378     if test "$with_gcc" = yes && test "$with_gnu_ld" = no; then
 379       allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 380       archive_cmds='$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 $lib'
 381
 382       hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 383       hardcode_libdir_separator=:
 384
 385       # Commands to make compiler produce verbose output that lists
 386       # what "hidden" libraries, object files and flags are used when
 387       # linking a shared library.
 388       output_verbose_link_cmds='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"'
 389     fi
 390
 391     case "$cc_basename" in
 392       KCC)
 393         # Kuck and Associates, Inc. (KAI) C++ Compiler
 394
 395         # KCC will only create a shared library if the output file
 396         # ends with ".so" (or ".sl" for HP-UX), so rename the library
 397         # to its proper name (with version) after linking.
 398         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 $lib'
 399
 400         hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
 401         hardcode_libdir_separator=:
 402
 403         # Archives containing C++ object files must be created using
 404         # the KAI C++ compiler.
 405         old_archive_cmds='$CC -o $oldlib $oldobjs'
 406         ;;
 407       RCC)
 408         # Rational C++ 2.4.1
 409         # FIXME: insert proper C++ library support
 410         ld_shlibs=no
 411         ;;
 412       cxx)
 413         allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 414         archive_cmds='$CC -shared${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-msym ${wl}-soname $soname `test -n "$verstring" && echo ${wl}-set_version $verstring` -update_registry ${objdir}/so_locations -o $lib'
 415
 416         hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 417         hardcode_libdir_separator=:
 418
 419         # Commands to make compiler produce verbose output that lists
 420         # what "hidden" libraries, object files and flags are used when
 421         # linking a shared library.
 422         #
 423         # There doesn't appear to be a way to prevent this compiler from
 424         # explicitly linking system object files so we need to strip them
 425         # from the output so that they don't get included in the library
 426         # dependencies.
 427         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 $list'
 428         ;;
 429       *)
 430         # FIXME: insert proper C++ library support
 431         ld_shlibs=no
 432         ;;
 433     esac
 434     ;;
 435   psos*)
 436     # FIXME: insert proper C++ library support
 437     ld_shlibs=no
 438     ;;
 439   sco*)
 440     case "$cc_basename" in
 441       CC)
 442         # FIXME: insert proper C++ library support
 443         ld_shlibs=no
 444         ;;
 445       *)
 446         # FIXME: insert proper C++ library support
 447         ld_shlibs=no
 448         ;;
 449     esac
 450     ;;
 451   sunos4*)
 452     case "$cc_basename" in
 453       CC)
 454         # Sun C++ 4.x
 455         # FIXME: insert proper C++ library support
 456         ld_shlibs=no
 457         ;;
 458       lcc)
 459         # Lucid
 460         # FIXME: insert proper C++ library support
 461         ld_shlibs=no
 462         ;;
 463       *)
 464         # FIXME: insert proper C++ library support
 465         ld_shlibs=no
 466         ;;
 467     esac
 468     ;;
 469   solaris*)
 470     case "$cc_basename" in
 471       CC)
 472         # Sun C++ 4.2, 5.x and Centerline C++
 473         no_undefined_flag=' -ztext'
 474         archive_cmds='$CC -G${allow_undefined_flag} -nolib -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
 475         archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 476         $CC -G${allow_undefined_flag} -nolib ${wl}-M ${wl}$lib.exp -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$rm $lib.exp'
 477
 478         hardcode_libdir_flag_spec='-R$libdir'
 479         hardcode_shlibpath_var=no
 480         case "$host_os" in
 481           solaris2.[0-5] | solaris2.[0-5].*) ;;
 482           *)
 483             # The C++ compiler is used as linker so we must use $wl
 484             # flag to pass the commands to the underlying system
 485             # linker.
 486             # Supported since Solaris 2.6 (maybe 2.5.1?)
 487             whole_archive_flag_spec='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
 488             ;;
 489         esac
 490         link_all_deplibs=yes
 491
 492         # Commands to make compiler produce verbose output that lists
 493         # what "hidden" libraries, object files and flags are used when
 494         # linking a shared library.
 495         #
 496         # There doesn't appear to be a way to prevent this compiler from
 497         # explicitly linking system object files so we need to strip them
 498         # from the output so that they don't get included in the library
 499         # dependencies.
 500         output_verbose_link_cmds='templist=`$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 $list'
 501
 502         # Archives containing C++ object files must be created using
 503         # "CC -xar", where "CC" is the Sun C++ compiler.  This is
 504         # necessary to make sure instantiated templates are included
 505         # in the archive.
 506         old_archive_cmds='$CC -xar -o $oldlib $oldobjs'
 507         ;;
 508       gcx)
 509         # Green Hills C++ Compiler
 510         archive_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
 511
 512         # The C++ compiler must be used to create the archive.
 513         old_archive_cmds='$CC $LDFLAGS -archive -o $oldlib $oldobjs'
 514         ;;
 515       *)
 516         # GNU C++ compiler with Solaris linker
 517         if test "$with_gcc" = yes && test "$with_gnu_ld" = no; then
 518           if $CC --version | egrep -v '^2\.7' > /dev/null; then
 519             archive_cmds='$LD -shared -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $linker_flags ${wl}-h $wl$soname -o $lib'
 520             archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 521                 $LD -shared -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags~$rm $lib.exp'
 522
 523             # Commands to make compiler produce verbose output that lists
 524             # what "hidden" libraries, object files and flags are used when
 525             # linking a shared library.
 526             output_verbose_link_cmds="$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep \"\-L\""
 527           else
 528             # g++ 2.7 appears to require `-G' NOT `-shared' on this
 529             # platform.
 530             archive_cmds='$LD -G -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $linker_flags ${wl}-h $wl$soname -o $lib'
 531             archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 532                 $LD -G -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags~$rm $lib.exp'
 533
 534             # Commands to make compiler produce verbose output that lists
 535             # what "hidden" libraries, object files and flags are used when
 536             # linking a shared library.
 537             output_verbose_link_cmds="$CC -G $CFLAGS -v conftest.$objext 2>&1 | egrep \"\-L\""
 538           fi
 539
 540           hardcode_libdir_flag_spec='${wl}-R $wl$libdir'
 541         fi
 542         ;;
 543     esac
 544     ;;
 545   tandem*)
 546     case "$cc_basename" in
 547       NCC)
 548         # NonStop-UX NCC 3.20
 549         # FIXME: insert proper C++ library support
 550         ld_shlibs=no
 551         ;;
 552       *)
 553         # FIXME: insert proper C++ library support
 554         ld_shlibs=no
 555         ;;
 556     esac
 557     ;;
 558   unixware*)
 559     # FIXME: insert proper C++ library support
 560     ld_shlibs=no
 561     ;;
 562   vxworks*)
 563     # FIXME: insert proper C++ library support
 564     ld_shlibs=no
 565     ;;
 566   *)
 567     # FIXME: insert proper C++ library support
 568     ld_shlibs=no
 569     ;;
 570 esac
 571
 572
 573 ## Compiler Characteristics: PIC flags, static flags, etc
 574
 575 # We don't use cached values here since only the C compiler
 576 # characteristics should be cached.
 577 ac_cv_prog_cc_pic=
 578 ac_cv_prog_cc_shlib=
 579 ac_cv_prog_cc_wl=
 580 ac_cv_prog_cc_static=
 581 ac_cv_prog_cc_no_builtin=
 582 ac_cv_prog_cc_can_build_shared=$can_build_shared
 583
 584 ac_cv_prog_cc_pic_works=
 585 ac_cv_prog_cc_static_works=
 586
 587 if test "$with_gcc" = yes; then
 588   ac_cv_prog_cc_wl='-Wl,'
 589   ac_cv_prog_cc_static='-static'
 590
 591   case "$host_os" in
 592   beos* | irix5* | irix6* | osf3* | osf4* | osf5*)
 593     # PIC is the default for these OSes.
 594     ;;
 595   aix*)
 596     # Below there is a dirty hack to force normal static linking with -ldl
 597     # The problem is because libdl dynamically linked with both libc and
 598     # libC (AIX C++ library), which obviously doesn't included in libraries
 599     # list by gcc. This cause undefined symbols with -static flags.
 600     # This hack allows C programs to be linked with "-static -ldl", but
 601     # we not sure about C++ programs.
 602     ac_cv_prog_cc_static="$ac_cv_prog_cc_static ${ac_cv_prog_cc_wl}-lC"
 603     ;;
 604   *djgpp*)
 605     # DJGPP does not support shared libraries at all
 606     ac_cv_prog_cc_pic=
 607     ;;
 608   cygwin* | mingw* | os2*)
 609     # This hack is so that the source file can tell whether it is being
 610     # built for inclusion in a dll (and should export symbols for example).
 611     ac_cv_prog_cc_pic='-DDLL_EXPORT'
 612     ;;
 613   amigaos*)
 614     # FIXME: we need at least 68020 code to build shared libraries, but
 615     # adding the `-m68020' flag to GCC prevents building anything better,
 616     # like `-m68040'.
 617     ac_cv_prog_cc_pic='-m68020 -resident32 -malways-restore-a4'
 618     ;;
 619   sysv4*MP*)
 620     if test -d /usr/nec; then
 621       ac_cv_prog_cc_pic=-Kconform_pic
 622     fi
 623     ;;
 624   *)
 625     ac_cv_prog_cc_pic='-fPIC'
 626     ;;
 627   esac
 628 else
 629   case "$host_os" in
 630     aix4* | aix5*)
 631       # All AIX code is PIC.
 632       ;;
 633     chorus*)
 634       case "$cc_basename" in
 635       cxch68)
 636         # Green Hills C++ Compiler
 637         # 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 $MVME_DIR/lib/classix/libcx.s.a"
 638         ;;
 639       esac
 640       ;;
 641     dgux*)
 642       case "$cc_basename" in
 643         ec++)
 644           ac_cv_prog_cc_pic='-KPIC'
 645           ;;
 646         ghcx)
 647           # Green Hills C++ Compiler
 648           ac_cv_prog_cc_pic='-pic'
 649           ;;
 650         *)
 651           ;;
 652       esac
 653       ;;
 654     freebsd*)
 655       # FreeBSD uses GNU C++
 656       ;;
 657     hpux9* | hpux10* | hpux11*)
 658       case "$cc_basename" in
 659         CC)
 660           ac_cv_prog_cc_wl='-Wl,'
 661           ac_cv_prog_cc_static="${ac_cv_prog_cc_wl}-a ${ac_cv_prog_cc_wl}archive"
 662           ac_cv_prog_cc_pic='+Z'
 663           ;;
 664         aCC)
 665           ac_cv_prog_cc_wl='-Wl,'
 666           ac_cv_prog_cc_static="${ac_cv_prog_cc_wl}-a ${ac_cv_prog_cc_wl}archive"
 667           ac_cv_prog_cc_pic='+Z'
 668           ;;
 669         *)
 670           ;;
 671       esac
 672       ;;
 673     irix5* | irix6*)
 674       case "$cc_basename" in
 675         CC)
 676           ac_cv_prog_cc_wl='-Wl,'
 677           ac_cv_prog_cc_static='-non_shared'
 678           ac_cv_prog_cc_pic='-KPIC'
 679           ;;
 680         *)
 681           ;;
 682       esac
 683       ;;
 684     linux*)
 685       case "$cc_basename" in
 686         KCC)
 687           # KAI C++ Compiler
 688           ac_cv_prog_cc_wl='--backend -Wl,'
 689           ac_cv_prog_cc_pic='-fPIC'
 690           ;;
 691         cxx)
 692           # Compaq C++
 693           # Make sure the PIC flag is empty.  It appears that all Alpha
 694           # Linux and Compaq Tru64 Unix objects are PIC.
 695           ac_cv_prog_cc_pic=
 696           ac_cv_prog_cc_static='-non_shared'
 697           ;;
 698         *)
 699           ;;
 700       esac
 701       ;;
 702     lynxos*)
 703       ;;
 704     m88k*)
 705       ;;
 706     mvs*)
 707       case "$cc_basename" in
 708         cxx)
 709           ac_cv_prog_cc_pic='-W c,exportall'
 710           ;;
 711         *)
 712           ;;
 713       esac
 714       ;;
 715     netbsd*)
 716       ;;
 717     osf3* | osf4* | osf5*)
 718       case "$cc_basename" in
 719         KCC)
 720           ac_cv_prog_cc_wl='--backend -Wl,'
 721           ;;
 722         RCC)
 723           # Rational C++ 2.4.1
 724           ac_cv_prog_cc_pic='-pic'
 725           ;;
 726         cxx)
 727           # Digital/Compaq C++
 728           ac_cv_prog_cc_wl='-Wl,'
 729           # Make sure the PIC flag is empty.  It appears that all Alpha
 730           # Linux and Compaq Tru64 Unix objects are PIC.
 731           ac_cv_prog_cc_pic=
 732           ac_cv_prog_cc_static='-non_shared'
 733           ;;
 734         *)
 735           ;;
 736       esac
 737       ;;
 738     psos*)
 739       ;;
 740     sco*)
 741       case "$cc_basename" in
 742         CC)
 743           ac_cv_prog_cc_pic='-fPIC'
 744           ;;
 745         *)
 746           ;;
 747       esac
 748       ;;
 749     solaris*)
 750       case "$cc_basename" in
 751         CC)
 752           # Sun C++ 4.2, 5.x and Centerline C++
 753           ac_cv_prog_cc_pic='-KPIC'
 754           ac_cv_prog_cc_static='-Bstatic'
 755           ac_cv_prog_cc_wl='-Qoption ld '
 756           ;;
 757         gcx)
 758           # Green Hills C++ Compiler
 759           ac_cv_prog_cc_pic='-PIC'
 760           ;;
 761         *)
 762           ;;
 763       esac
 764       ;;
 765     sunos4*)
 766       case "$cc_basename" in
 767         CC)
 768           # Sun C++ 4.x
 769           ac_cv_prog_cc_pic='-pic'
 770           ac_cv_prog_cc_static='-Bstatic'
 771           ;;
 772         lcc)
 773           # Lucid
 774           ac_cv_prog_cc_pic='-pic'
 775           ;;
 776         *)
 777           ;;
 778       esac
 779       ;;
 780     tandem*)
 781       case "$cc_basename" in
 782         NCC)
 783           # NonStop-UX NCC 3.20
 784           ac_cv_prog_cc_pic='-KPIC'
 785           ;;
 786         *)
 787           ;;
 788       esac
 789       ;;
 790     unixware*)
 791       ;;
 792     vxworks*)
 793       ;;
 794     *)
 795       ac_cv_prog_cc_can_build_shared=no
 796       ;;
 797   esac
 798 fi
 799
 800 case "$host_os" in
 801     # Platforms which do not suport PIC and -DPIC is meaningless
 802     # on them:
 803     *djgpp*)
 804       ac_cv_prog_cc_pic=
 805       ;;
 806     *)
 807       ac_cv_prog_cc_pic="$ac_cv_prog_cc_pic -DPIC"
 808       ;;
 809 esac
 810
 811
 812 # Figure out "hidden" C++ library dependencies from verbose
 813 # compiler output whening linking a shared library.
 814 cat > conftest.$ac_ext <<EOF
 815 class Foo
 816 {
 817 public:
 818   Foo (void) { a = 0; }
 819 private:
 820   int a;
 821 };
 822 EOF
 823
 824
 825 if (eval $ac_compile) 2>&5; then
 826   # Parse the compiler output and extract the necessary
 827   # objects, libraries and library flags.
 828
 829   # Sentinel used to keep track of whether or not we are before
 830   # the conftest object file.
 831   pre_test_object_deps_done=no
 832
 833   for p in `eval $output_verbose_link_cmds`; do
 834
 835     case $p in
 836
 837     -L* | -R* | -l*)
 838        # Some compilers place space between "-{L,R}" and the path.
 839        # Remove the space.
 840        if test $p = "-L" \
 841           || test $p = "-R"; then
 842          prev=$p
 843          continue
 844        else
 845          prev=
 846        fi
 847
 848        if test "$pre_test_object_deps_done" = no; then
 849          case $p in
 850          -L* | -R*)
 851            # Internal compiler library paths should come after those
 852            # provided the user.  The postdeps already come after the
 853            # user supplied libs so there is no need to process them.
 854            if test -z "$compiler_lib_search_path"; then
 855              compiler_lib_search_path="${prev}${p}"
 856            else
 857              compiler_lib_search_path="${compiler_lib_search_path} ${prev}${p}"
 858            fi
 859            ;;
 860          # The "-l" case would never come before the object being
 861          # linked, so don't bother handling this case.
 862          esac
 863        else
 864          if test -z "$postdeps"; then
 865            postdeps="${prev}${p}"
 866          else
 867            postdeps="${postdeps} ${prev}${p}"
 868          fi
 869        fi
 870        ;;
 871
 872     *.$objext)
 873        # This assumes that the test object file only shows up
 874        # once in the compiler output.
 875        if test "$p" = "conftest.$objext"; then
 876          pre_test_object_deps_done=yes
 877          continue
 878        fi
 879
 880        if test "$pre_test_object_deps_done" = no; then
 881          if test -z "$predep_objects"; then
 882            predep_objects="$p"
 883          else
 884            predep_objects="$predep_objects $p"
 885          fi
 886        else
 887          if test -z "$postdep_objects"; then
 888            postdep_objects="$p"
 889          else
 890            postdep_objects="$postdep_objects $p"
 891          fi
 892        fi
 893        ;;
 894
 895     *) ;; # Ignore the rest.
 896
 897     esac
 898   done
 899
 900   # Clean up.
 901   rm -f a.out
 902 else
 903   echo "ltcf-cxx.sh: error: problem compiling test program"
 904 fi
 905
 906 $rm -f confest.$objext
 907
 908 case " $postdeps " in
 909 *" -lc "*) need_lc=no ;;
 910 *) need_lc=yes ;;
 911 esac