gnu/dist/gdb6/ltcf-gcj.sh

   1 #### This script is meant to be sourced by ltconfig.
   2
   3 # ltcf-gcj.sh - Create a GCJ 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 GCJ support by:
   9 #    Alexandre Oliva <oliva@lsd.ic.unicamp.br>
  10 #
  11 # This file is free software; you can redistribute it and/or modify it
  12 # under the terms of the GNU General Public License as published by
  13 # the Free Software Foundation; either version 2 of the License, or
  14 # (at your option) any later version.
  15 #
  16 # This program is distributed in the hope that it will be useful, but
  17 # WITHOUT ANY WARRANTY; without even the implied warranty of
  18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19 # General Public License for more details.
  20 #
  21 # You should have received a copy of the GNU General Public License
  22 # along with this program; if not, write to the Free Software
  23 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  24 #
  25 # As a special exception to the GNU General Public License, if you
  26 # distribute this file as part of a program that contains a
  27 # configuration script generated by Autoconf, you may include it under
  28 # the same distribution terms that you use for the rest of that program.
  29
  30
  31 # Source file extension for Java test sources.
  32 ac_ext=java
  33
  34 # Object file extension for compiled Java test sources.
  35 objext=o
  36
  37 # Code to be used in simple compile tests
  38 lt_simple_compile_test_code="class foo {}"
  39
  40 # Code to be used in simple link tests
  41 lt_simple_link_test_code='public class conftest { public static void main(String[] argv) {}; }'
  42
  43 ## Linker Characteristics
  44 case $host_os in
  45 cygwin* | mingw*)
  46   # FIXME: the MSVC++ port hasn't been tested in a loooong time
  47   # When not using gcc, we currently assume that we are using
  48   # Microsoft Visual C++.
  49   if test "$with_gcc" != yes; then
  50     with_gnu_ld=no
  51   fi
  52   ;;
  53
  54 esac
  55
  56 ld_shlibs=yes
  57 if test "$with_gnu_ld" = yes; then
  58   # If archive_cmds runs LD, not CC, wlarc should be empty
  59   wlarc='${wl}'
  60
  61   # See if GNU ld supports shared libraries.
  62   case $host_os in
  63   aix3* | aix4* | aix5*)
  64     # On AIX/PPC, the GNU linker is very broken
  65     if test "$host_cpu" != ia64; then
  66       ld_shlibs=no
  67       cat <<EOF 1>&2
  68
  69 *** Warning: the GNU linker, at least up to release 2.9.1, is reported
  70 *** to be unable to reliably create shared libraries on AIX.
  71 *** Therefore, libtool is disabling shared libraries support.  If you
  72 *** really care for shared libraries, you may want to modify your PATH
  73 *** so that a non-GNU linker is found, and then restart.
  74
  75 EOF
  76     fi
  77     ;;
  78
  79   amigaos*)
  80     archive_cmds='$rm $output_objdir/a2ixlibrary.data~$echo "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$echo "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$echo "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$echo "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
  81     hardcode_libdir_flag_spec='-L$libdir'
  82     hardcode_minus_L=yes
  83
  84     # Samuel A. Falvo II <kc5tja@dolphin.openprojects.net> reports
  85     # that the semantics of dynamic libraries on AmigaOS, at least up
  86     # to version 4, is to share data among multiple programs linked
  87     # with the same dynamic library.  Since this doesn't match the
  88     # behavior of shared libraries on other platforms, we can use
  89     # them.
  90     ld_shlibs=no
  91     ;;
  92
  93   beos*)
  94     if $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
  95       allow_undefined_flag=unsupported
  96       # Joseph Beckenbach <jrb3@best.com> says some releases of gcc
  97       # support --undefined.  This deserves some investigation.  FIXME
  98       archive_cmds='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
  99     else
 100       ld_shlibs=no
 101     fi
 102     ;;
 103
 104   cygwin* | mingw*)
 105     # hardcode_libdir_flag_spec is actually meaningless, as there is
 106     # no search path for DLLs.
 107     hardcode_libdir_flag_spec='-L$libdir'
 108     allow_undefined_flag=unsupported
 109     always_export_symbols=yes
 110
 111     extract_expsyms_cmds='test -f $output_objdir/impgen.c || \
 112       sed -e "/^# \/\* impgen\.c starts here \*\//,/^# \/\* impgen.c ends here \*\// { s/^# //; p; }" -e d < $0 > $output_objdir/impgen.c~
 113       test -f $output_objdir/impgen.exe || (cd $output_objdir && \
 114       if test "x$BUILD_CC" != "x" ; then $BUILD_CC -o impgen impgen.c ; \
 115       else $CC -o impgen impgen.c ; fi)~
 116       $output_objdir/impgen $dir/$soroot > $output_objdir/$soname-def'
 117
 118     old_archive_from_expsyms_cmds='$DLLTOOL --as=$AS --dllname $soname --def $output_objdir/$soname-def --output-lib $output_objdir/$newlib'
 119
 120     # cygwin and mingw dlls have different entry points and sets of symbols
 121     # to exclude.
 122     # FIXME: what about values for MSVC?
 123     dll_entry=__cygwin_dll_entry@12
 124     dll_exclude_symbols=DllMain@12,_cygwin_dll_entry@12,_cygwin_noncygwin_dll_entry@12~
 125     case $host_os in
 126     mingw*)
 127       # mingw values
 128       dll_entry=_DllMainCRTStartup@12
 129       dll_exclude_symbols=DllMain@12,DllMainCRTStartup@12,DllEntryPoint@12~
 130       ;;
 131     esac
 132
 133     # mingw and cygwin differ, and it's simplest to just exclude the union
 134     # of the two symbol sets.
 135     dll_exclude_symbols=DllMain@12,_cygwin_dll_entry@12,_cygwin_noncygwin_dll_entry@12,DllMainCRTStartup@12,DllEntryPoint@12
 136
 137     # recent cygwin and mingw systems supply a stub DllMain which the user
 138     # can override, but on older systems we have to supply one (in ltdll.c)
 139     if test "x$lt_cv_need_dllmain" = "xyes"; then
 140       ltdll_obj='$output_objdir/$soname-ltdll.'"$objext "
 141       ltdll_cmds='test -f $output_objdir/$soname-ltdll.c || sed -e "/^# \/\* ltdll\.c starts here \*\//,/^# \/\* ltdll.c ends here \*\// { s/^# //; p; }" -e d < $0 > $output_objdir/$soname-ltdll.c~
 142         test -f $output_objdir/$soname-ltdll.$objext || (cd $output_objdir && $CC -c $soname-ltdll.c)~'
 143     else
 144       ltdll_obj=
 145       ltdll_cmds=
 146     fi
 147
 148     # Extract the symbol export list from an `--export-all' def file,
 149     # then regenerate the def file from the symbol export list, so that
 150     # the compiled dll only exports the symbol export list.
 151     # Be careful not to strip the DATA tag left be newer dlltools.
 152     export_symbols_cmds="$ltdll_cmds"'
 153       $DLLTOOL --export-all --exclude-symbols '$dll_exclude_symbols' --output-def $output_objdir/$soname-def '$ltdll_obj'$libobjs $convenience~
 154       sed -e "1,/EXPORTS/d" -e "s/ @ [0-9]*//" -e "s/ *;.*$//" < $output_objdir/$soname-def > $export_symbols'
 155
 156     # If the export-symbols file already is a .def file (1st line
 157     # is EXPORTS), use it as is.
 158     # If DATA tags from a recent dlltool are present, honour them!
 159     archive_expsym_cmds='if test "x`head -1 $export_symbols`" = xEXPORTS; then
 160         cp $export_symbols $output_objdir/$soname-def;
 161       else
 162         echo EXPORTS > $output_objdir/$soname-def;
 163         _lt_hint=1;
 164         cat $export_symbols | while read symbol; do
 165          set dummy \$symbol;
 166          case \[$]# in
 167            2) echo "   \[$]2 @ \$_lt_hint ; " >> $output_objdir/$soname-def;;
 168            *) echo "     \[$]2 @ \$_lt_hint \[$]3 ; " >> $output_objdir/$soname-def;;
 169          esac;
 170          _lt_hint=`expr 1 + \$_lt_hint`;
 171         done;
 172       fi~
 173       '"$ltdll_cmds"'
 174       $CC -Wl,--base-file,$output_objdir/$soname-base '$lt_cv_cc_dll_switch' -Wl,-e,'$dll_entry' -o $output_objdir/$soname '$ltdll_obj'$libobjs $deplibs $compiler_flags~
 175       $DLLTOOL --as=$AS --dllname $soname --exclude-symbols '$dll_exclude_symbols' --def $output_objdir/$soname-def --base-file $output_objdir/$soname-base --output-exp $output_objdir/$soname-exp~
 176       $CC -Wl,--base-file,$output_objdir/$soname-base $output_objdir/$soname-exp '$lt_cv_cc_dll_switch' -Wl,-e,'$dll_entry' -o $output_objdir/$soname '$ltdll_obj'$libobjs $deplibs $compiler_flags~
 177       $DLLTOOL --as=$AS --dllname $soname --exclude-symbols '$dll_exclude_symbols' --def $output_objdir/$soname-def --base-file $output_objdir/$soname-base --output-exp $output_objdir/$soname-exp --output-lib $output_objdir/$libname.dll.a~
 178       $CC $output_objdir/$soname-exp '$lt_cv_cc_dll_switch' -Wl,-e,'$dll_entry' -o $output_objdir/$soname '$ltdll_obj'$libobjs $deplibs $compiler_flags'
 179     ;;
 180
 181   netbsd* | knetbsd*-gnu)
 182     if echo __ELF__ | $CC -E - | grep __ELF__ >/dev/null; then
 183       archive_cmds='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib'
 184       wlarc=
 185     else
 186       archive_cmds='$CC -shared -nodefaultlibs $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
 187       archive_expsym_cmds='$CC -shared -nodefaultlibs $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
 188     fi
 189     ;;
 190
 191   solaris* | sysv5*)
 192     if $LD -v 2>&1 | egrep 'BFD 2\.8' > /dev/null; then
 193       ld_shlibs=no
 194       cat <<EOF 1>&2
 195
 196 *** Warning: The releases 2.8.* of the GNU linker cannot reliably
 197 *** create shared libraries on Solaris systems.  Therefore, libtool
 198 *** is disabling shared libraries support.  We urge you to upgrade GNU
 199 *** binutils to release 2.9.1 or newer.  Another option is to modify
 200 *** your PATH or compiler configuration so that the native linker is
 201 *** used, and then restart.
 202
 203 EOF
 204     elif $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
 205       archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
 206       archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
 207     else
 208       ld_shlibs=no
 209     fi
 210     ;;
 211
 212   sunos4*)
 213     archive_cmds='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags'
 214     wlarc=
 215     hardcode_direct=yes
 216     hardcode_shlibpath_var=no
 217     ;;
 218
 219   *)
 220     if $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
 221       archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
 222       archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
 223     else
 224       ld_shlibs=no
 225     fi
 226     ;;
 227   esac
 228
 229   if test "$ld_shlibs" = yes; then
 230     runpath_var=LD_RUN_PATH
 231     hardcode_libdir_flag_spec='${wl}--rpath ${wl}$libdir'
 232     export_dynamic_flag_spec='${wl}--export-dynamic'
 233     case $host_os in
 234     cygwin* | mingw*)
 235       # dlltool doesn't understand --whole-archive et. al.
 236       whole_archive_flag_spec=
 237       ;;
 238     *)
 239       # ancient GNU ld didn't support --whole-archive et. al.
 240       if $LD --help 2>&1 | egrep 'no-whole-archive' > /dev/null; then
 241         whole_archive_flag_spec="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
 242       else
 243         whole_archive_flag_spec=
 244       fi
 245       ;;
 246     esac
 247   fi
 248 else
 249   # PORTME fill in a description of your system's linker (not GNU ld)
 250   case $host_os in
 251   aix3*)
 252     allow_undefined_flag=unsupported
 253     always_export_symbols=yes
 254     archive_expsym_cmds='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname'
 255     # Note: this linker hardcodes the directories in LIBPATH if there
 256     # are no directories specified by -L.
 257     hardcode_minus_L=yes
 258     if test "$with_gcc" = yes && test -z "$link_static_flag"; then
 259       # Neither direct hardcoding nor static linking is supported with a
 260       # broken collect2.
 261       hardcode_direct=unsupported
 262     fi
 263     ;;
 264
 265   aix4* | aix5*)
 266     hardcode_direct=yes
 267     hardcode_libdir_separator=':'
 268     link_all_deplibs=yes
 269     # When large executables or shared objects are built, AIX ld can
 270     # have problems creating the table of contents.  If linking a library
 271     # or program results in "error TOC overflow" add -mminimal-toc to
 272     # CXXFLAGS/CFLAGS for g++/gcc.  In the cases where that is not
 273     # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
 274     if test "$with_gcc" = yes; then
 275       case $host_os in aix4.[012]|aix4.[012].*)
 276       # We only want to do this on AIX 4.2 and lower, the check
 277       # below for broken collect2 doesn't work under 4.3+
 278         collect2name=`${CC} -print-prog-name=collect2`
 279         if test -f "$collect2name" && \
 280            strings "$collect2name" | grep resolve_lib_name >/dev/null
 281         then
 282           # We have reworked collect2
 283           hardcode_direct=yes
 284         else
 285           # We have old collect2
 286           hardcode_direct=unsupported
 287           # It fails to find uninstalled libraries when the uninstalled
 288           # path is not listed in the libpath.  Setting hardcode_minus_L
 289           # to unsupported forces relinking
 290           hardcode_minus_L=yes
 291           hardcode_libdir_flag_spec='-L$libdir'
 292           hardcode_libdir_separator=
 293         fi
 294       esac
 295       shared_flag='-shared'
 296     else
 297       # not using gcc
 298       if test "$host_cpu" = ia64; then
 299         shared_flag='${wl}-G'
 300       else
 301         shared_flag='${wl}-bM:SRE'
 302       fi
 303     fi
 304
 305     if test "$host_cpu" = ia64; then
 306       # On IA64, the linker does run time linking by default, so we don't
 307       # have to do anything special.
 308       aix_use_runtimelinking=no
 309       if test $with_gnu_ld = no; then
 310         exp_sym_flag='-Bexport'
 311         no_entry_flag=""
 312       fi
 313     else
 314       # Test if we are trying to use run time linking, or normal AIX style linking.
 315       # If -brtl is somewhere in LDFLAGS, we need to do run time linking.
 316       aix_use_runtimelinking=no
 317       for ld_flag in $LDFLAGS; do
 318         if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl" ); then
 319           aix_use_runtimelinking=yes
 320           break
 321         fi
 322       done
 323       exp_sym_flag='-bexport'
 324       no_entry_flag='-bnoentry'
 325     fi
 326     # -bexpall does not export symbols beginning with underscore (_)
 327     always_export_symbols=yes
 328     if test "$aix_use_runtimelinking" = yes; then
 329       # Warning - without using the other run time loading flags (-brtl), -berok will
 330       #           link without error, but may produce a broken library.
 331       allow_undefined_flag=' ${wl}-berok'
 332       hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:/usr/lib:/lib'
 333       archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs $compiler_flags ${allow_undefined_flag} '"\${wl}$no_entry_flag \${wl}$exp_sym_flag:\$export_symbols"
 334     else
 335       if test "$host_cpu" = ia64; then
 336         if test $with_gnu_ld = no; then
 337           hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib'
 338           allow_undefined_flag="-z nodefs"
 339           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"
 340         fi
 341       else
 342         allow_undefined_flag=' ${wl}-berok'
 343         # -bexpall does not export symbols beginning with underscore (_)
 344         always_export_symbols=yes
 345         # Exported symbols can be pulled into shared objects from archives
 346         whole_archive_flag_spec=' '
 347         build_libtool_need_lc=yes
 348         hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:/usr/lib:/lib'
 349         # This is similar to how AIX traditionally builds it's shared libraries.
 350         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'
 351       fi
 352     fi
 353   ;;
 354
 355   amigaos*)
 356     archive_cmds='$rm $output_objdir/a2ixlibrary.data~$echo "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$echo "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$echo "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$echo "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
 357     hardcode_libdir_flag_spec='-L$libdir'
 358     hardcode_minus_L=yes
 359     # see comment about different semantics on the GNU ld section
 360     ld_shlibs=no
 361     ;;
 362
 363   cygwin* | mingw*)
 364     # When not using gcc, we currently assume that we are using
 365     # Microsoft Visual C++.
 366     # hardcode_libdir_flag_spec is actually meaningless, as there is
 367     # no search path for DLLs.
 368     hardcode_libdir_flag_spec=' '
 369     allow_undefined_flag=unsupported
 370     # Tell ltmain to make .lib files, not .a files.
 371     libext=lib
 372     # FIXME: Setting linknames here is a bad hack.
 373     archive_cmds='$CC -o $lib $libobjs $compiler_flags `echo "$deplibs" | sed -e '\''s/ -lc$//'\''` -link -dll~linknames='
 374     # The linker will automatically build a .lib file if we build a DLL.
 375     old_archive_from_new_cmds='true'
 376     # FIXME: Should let the user specify the lib program.
 377     old_archive_cmds='lib /OUT:$oldlib$oldobjs$old_deplibs'
 378     fix_srcfile_path='`cygpath -w "$srcfile"`'
 379     ;;
 380
 381   freebsd1*)
 382     ld_shlibs=no
 383     ;;
 384
 385   # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
 386   # support.  Future versions do this automatically, but an explicit c++rt0.o
 387   # does not break anything, and helps significantly (at the cost of a little
 388   # extra space).
 389   freebsd2.2*)
 390     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o'
 391     hardcode_libdir_flag_spec='-R$libdir'
 392     hardcode_direct=yes
 393     hardcode_shlibpath_var=no
 394     ;;
 395
 396   # Unfortunately, older versions of FreeBSD 2 do not have this feature.
 397   freebsd2*)
 398     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
 399     hardcode_direct=yes
 400     hardcode_minus_L=yes
 401     hardcode_shlibpath_var=no
 402     ;;
 403
 404   # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
 405   freebsd* | kfreebsd*-gnu)
 406     archive_cmds='$CC -shared -o $lib $libobjs $deplibs $compiler_flags'
 407     hardcode_libdir_flag_spec='-R$libdir'
 408     hardcode_direct=yes
 409     hardcode_shlibpath_var=no
 410     ;;
 411
 412   hpux9* | hpux10* | hpux11*)
 413     case $host_os in
 414     hpux9*) archive_cmds='$rm $output_objdir/$soname~$LD -b +b $install_libdir -o $output_objdir/$soname $libobjs $deplibs $linker_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib' ;;
 415     *) archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags' ;;
 416     esac
 417     hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
 418     hardcode_libdir_separator=:
 419     hardcode_direct=yes
 420     hardcode_minus_L=yes # Not in the search PATH, but as the default
 421                          # location of the library.
 422     export_dynamic_flag_spec='${wl}-E'
 423     ;;
 424
 425   irix5* | irix6*)
 426     if test "$with_gcc" = yes; then
 427       archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && echo ${wl}-set_version ${wl}$verstring` ${wl}-update_registry ${wl}${objdir}/so_locations -o $lib'
 428     else
 429       archive_cmds='$LD -shared $libobjs $deplibs $linker_flags -soname $soname `test -n "$verstring" && echo -set_version $verstring` -update_registry ${objdir}/so_locations -o $lib'
 430     fi
 431     hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 432     hardcode_libdir_separator=:
 433     link_all_deplibs=yes
 434     ;;
 435
 436   netbsd* | knetbsd*-gnu)
 437     if echo __ELF__ | $CC -E - | grep __ELF__ >/dev/null; then
 438       archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'  # a.out
 439     else
 440       archive_cmds='$LD -shared -nodefaultlibs -o $lib $libobjs $deplibs $linker_flags'      # ELF
 441     fi
 442     hardcode_libdir_flag_spec='${wl}-R$libdir'
 443     hardcode_direct=yes
 444     hardcode_shlibpath_var=no
 445     ;;
 446
 447   openbsd*)
 448     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
 449     hardcode_libdir_flag_spec='-R$libdir'
 450     hardcode_direct=yes
 451     hardcode_shlibpath_var=no
 452     ;;
 453
 454   os2*)
 455     hardcode_libdir_flag_spec='-L$libdir'
 456     hardcode_minus_L=yes
 457     allow_undefined_flag=unsupported
 458     archive_cmds='$echo "LIBRARY $libname INITINSTANCE" > $output_objdir/$libname.def~$echo "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~$echo DATA >> $output_objdir/$libname.def~$echo " SINGLE NONSHARED" >> $output_objdir/$libname.def~$echo EXPORTS >> $output_objdir/$libname.def~emxexp $libobjs >> $output_objdir/$libname.def~$CC -Zdll -Zcrtdll -o $lib $libobjs $deplibs $compiler_flags $output_objdir/$libname.def'
 459     old_archive_from_new_cmds='emximp -o $output_objdir/$libname.a $output_objdir/$libname.def'
 460     ;;
 461
 462   osf3*)
 463     if test "$with_gcc" = yes; then
 464       allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 465       archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && echo ${wl}-set_version ${wl}$verstring` ${wl}-update_registry ${wl}${objdir}/so_locations -o $lib'
 466     else
 467       allow_undefined_flag=' -expect_unresolved \*'
 468       archive_cmds='$LD -shared${allow_undefined_flag} $libobjs $deplibs $linker_flags -soname $soname `test -n "$verstring" && echo -set_version $verstring` -update_registry ${objdir}/so_locations -o $lib'
 469     fi
 470     hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 471     hardcode_libdir_separator=:
 472     ;;
 473
 474   osf4* | osf5*)        # as osf3* with the addition of -msym flag
 475     if test "$with_gcc" = yes; then
 476       allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 477       archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $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 $lib'
 478     else
 479       allow_undefined_flag=' -expect_unresolved \*'
 480       archive_cmds='$LD -shared${allow_undefined_flag} $libobjs $deplibs $linker_flags -msym -soname $soname `test -n "$verstring" && echo -set_version $verstring` -update_registry ${objdir}/so_locations -o $lib'
 481     fi
 482     hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 483     hardcode_libdir_separator=:
 484     ;;
 485
 486   sco3.2v5*)
 487     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 488     hardcode_shlibpath_var=no
 489     runpath_var=LD_RUN_PATH
 490     hardcode_runpath_var=yes
 491     ;;
 492
 493   solaris*)
 494     no_undefined_flag=' ${wl}-z ${wl}defs'
 495     archive_cmds='$CC -shared -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
 496     archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 497       $CC -shared -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$rm $lib.exp'
 498
 499     # Commands to make compiler produce verbose output that lists
 500     # what "hidden" libraries, object files and flags are used when
 501     # linking a shared library.
 502     output_verbose_link_cmds="$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep \"\-L\""
 503
 504     hardcode_libdir_flag_spec='${wl}-R $wl$libdir'
 505     hardcode_shlibpath_var=no
 506     case $host_os in
 507     solaris2.[0-5] | solaris2.[0-5].*) ;;
 508     *) # Supported since Solaris 2.6 (maybe 2.5.1?)
 509       whole_archive_flag_spec='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract' ;;
 510     esac
 511     link_all_deplibs=yes
 512     ;;
 513
 514   sunos4*)
 515     archive_cmds='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags'
 516     hardcode_libdir_flag_spec='-L$libdir'
 517     hardcode_direct=yes
 518     hardcode_minus_L=yes
 519     hardcode_shlibpath_var=no
 520     ;;
 521
 522   sysv4)
 523     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 524     runpath_var='LD_RUN_PATH'
 525     hardcode_shlibpath_var=no
 526     hardcode_direct=no #Motorola manual says yes, but my tests say they lie
 527     ;;
 528
 529   sysv4.3*)
 530     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 531     hardcode_shlibpath_var=no
 532     export_dynamic_flag_spec='-Bexport'
 533     ;;
 534
 535   sysv5*)
 536     no_undefined_flag=' -z text'
 537     # $CC -shared without GNU ld will not create a library from C++
 538     # object files and a static libstdc++, better avoid it by now
 539     archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
 540     archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 541                 $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$rm $lib.exp'
 542     hardcode_libdir_flag_spec=
 543     hardcode_shlibpath_var=no
 544     runpath_var='LD_RUN_PATH'
 545     ;;
 546
 547   uts4*)
 548     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 549     hardcode_libdir_flag_spec='-L$libdir'
 550     hardcode_shlibpath_var=no
 551     ;;
 552
 553   dgux*)
 554     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 555     hardcode_libdir_flag_spec='-L$libdir'
 556     hardcode_shlibpath_var=no
 557     ;;
 558
 559   sysv4*MP*)
 560     if test -d /usr/nec; then
 561       archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 562       hardcode_shlibpath_var=no
 563       runpath_var=LD_RUN_PATH
 564       hardcode_runpath_var=yes
 565       ld_shlibs=yes
 566     fi
 567     ;;
 568
 569   sysv4.2uw2*)
 570     archive_cmds='$LD -G -o $lib $libobjs $deplibs $linker_flags'
 571     hardcode_direct=yes
 572     hardcode_minus_L=no
 573     hardcode_shlibpath_var=no
 574     hardcode_runpath_var=yes
 575     runpath_var=LD_RUN_PATH
 576     ;;
 577
 578   sysv5uw7* | unixware7*)
 579     no_undefined_flag='${wl}-z ${wl}text'
 580     if test "$GCC" = yes; then
 581       archive_cmds='$CC -shared ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
 582     else
 583       archive_cmds='$CC -G ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
 584     fi
 585     runpath_var='LD_RUN_PATH'
 586     hardcode_shlibpath_var=no
 587     ;;
 588
 589   *)
 590     ld_shlibs=no
 591     ;;
 592   esac
 593 fi
 594
 595 ## Compiler Characteristics: PIC flags, static flags, etc
 596
 597 # We don't use cached values here since only the C compiler
 598 # characteristics should be cached.
 599   ac_cv_prog_cc_pic=
 600   ac_cv_prog_cc_shlib=
 601   ac_cv_prog_cc_wl=
 602   ac_cv_prog_cc_static=
 603   ac_cv_prog_cc_no_builtin=
 604   ac_cv_prog_cc_can_build_shared=$can_build_shared
 605
 606     ac_cv_prog_cc_wl='-Wl,'
 607     ac_cv_prog_cc_static='-static'
 608
 609     case $host_os in
 610     beos* | irix5* | irix6* | osf3* | osf4* | osf5*)
 611       # PIC is the default for these OSes.
 612       ;;
 613     aix*)
 614       # Below there is a dirty hack to force normal static linking with -ldl
 615       # The problem is because libdl dynamically linked with both libc and
 616       # libC (AIX C++ library), which obviously doesn't included in libraries
 617       # list by gcc. This cause undefined symbols with -static flags.
 618       # This hack allows C programs to be linked with "-static -ldl", but
 619       # we not sure about C++ programs.
 620       ac_cv_prog_cc_static="$ac_cv_prog_cc_static ${ac_cv_prog_cc_wl}-lC"
 621       ;;
 622     *djgpp*)
 623       # DJGPP does not suppot shared libraries at all
 624       ac_cv_prog_cc_pic=
 625       ;;
 626     cygwin* | mingw* | os2*)
 627       # This hack is so that the source file can tell whether it is being
 628       # built for inclusion in a dll (and should export symbols for example).
 629       ac_cv_prog_cc_pic='-DDLL_EXPORT'
 630       ;;
 631     amigaos*)
 632       # FIXME: we need at least 68020 code to build shared libraries, but
 633       # adding the `-m68020' flag to GCC prevents building anything better,
 634       # like `-m68040'.
 635       ac_cv_prog_cc_pic='-m68020 -resident32 -malways-restore-a4'
 636       ;;
 637     sysv4*MP*)
 638       if test -d /usr/nec; then
 639          ac_cv_prog_cc_pic=-Kconform_pic
 640       fi
 641       ;;
 642     *)
 643       ac_cv_prog_cc_pic='-fPIC'
 644       ;;
 645     esac
 646
 647 # GCJ did not exist at the time GCC didn't implicitly link libc in.
 648 need_lc=no
 649
 650 # All existing releases of GCJ support `-c -o'.
 651 lt_cv_compiler_c_o=yes