ltcf-c.sh

   1 #### This script is meant to be sourced by ltconfig.
   2
   3 # ltcf-c.sh - Create a C compiler specific configuration
   4 #
   5 # Copyright (C) 1996-2000, 2001 Free Software Foundation, Inc.
   6 # Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
   7 #
   8 # This file is free software; you can redistribute it and/or modify it
   9 # under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 2 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful, but
  14 # WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 # General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program; if not, write to the Free Software
  20 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  21 #
  22 # As a special exception to the GNU General Public License, if you
  23 # distribute this file as part of a program that contains a
  24 # configuration script generated by Autoconf, you may include it under
  25 # the same distribution terms that you use for the rest of that program.
  26
  27
  28 # Source file extension for C test sources.
  29 ac_ext=c
  30
  31 # Object file extension for compiled C test sources.
  32 objext=o
  33
  34 # Code to be used in simple compile tests
  35 lt_simple_compile_test_code="int some_variable = 0;"
  36
  37 # Code to be used in simple link tests
  38 lt_simple_link_test_code='main(){return(0);}'
  39
  40 ## Linker Characteristics
  41 case $host_os in
  42 cygwin* | mingw*)
  43   # FIXME: the MSVC++ port hasn't been tested in a loooong time
  44   # When not using gcc, we currently assume that we are using
  45   # Microsoft Visual C++.
  46   if test "$with_gcc" != yes; then
  47     with_gnu_ld=no
  48   fi
  49   ;;
  50
  51 esac
  52
  53 ld_shlibs=yes
  54 if test "$with_gnu_ld" = yes; then
  55   # If archive_cmds runs LD, not CC, wlarc should be empty
  56   wlarc='${wl}'
  57
  58   # See if GNU ld supports shared libraries.
  59   case $host_os in
  60   aix3* | aix4* | aix5*)
  61     # On AIX/PPC, the GNU linker is very broken
  62     if test "$host_cpu" != ia64; then
  63       ld_shlibs=no
  64       cat <<EOF 1>&2
  65
  66 *** Warning: the GNU linker, at least up to release 2.9.1, is reported
  67 *** to be unable to reliably create shared libraries on AIX.
  68 *** Therefore, libtool is disabling shared libraries support.  If you
  69 *** really care for shared libraries, you may want to modify your PATH
  70 *** so that a non-GNU linker is found, and then restart.
  71
  72 EOF
  73     fi
  74     ;;
  75
  76   amigaos*)
  77     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 $output_objdir && a2ixlibrary -32)'
  78     hardcode_libdir_flag_spec='-L$libdir'
  79     hardcode_minus_L=yes
  80
  81     # Samuel A. Falvo II <kc5tja@dolphin.openprojects.net> reports
  82     # that the semantics of dynamic libraries on AmigaOS, at least up
  83     # to version 4, is to share data among multiple programs linked
  84     # with the same dynamic library.  Since this doesn't match the
  85     # behavior of shared libraries on other platforms, we can use
  86     # them.
  87     ld_shlibs=no
  88     ;;
  89
  90   beos*)
  91     if $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
  92       allow_undefined_flag=unsupported
  93       # Joseph Beckenbach <jrb3@best.com> says some releases of gcc
  94       # support --undefined.  This deserves some investigation.  FIXME
  95       archive_cmds='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
  96     else
  97       ld_shlibs=no
  98     fi
  99     ;;
 100
 101   cygwin* | mingw*)
 102     # hardcode_libdir_flag_spec is actually meaningless, as there is
 103     # no search path for DLLs.
 104     hardcode_libdir_flag_spec='-L$libdir'
 105     allow_undefined_flag=unsupported
 106     always_export_symbols=yes
 107
 108     extract_expsyms_cmds='test -f $output_objdir/impgen.c || \
 109       sed -e "/^# \/\* impgen\.c starts here \*\//,/^# \/\* impgen.c ends here \*\// { s/^# //; p; }" -e d < $0 > $output_objdir/impgen.c~
 110       test -f $output_objdir/impgen.exe || (cd $output_objdir && \
 111       if test "x$BUILD_CC" != "x" ; then $BUILD_CC -o impgen impgen.c ; \
 112       else $CC -o impgen impgen.c ; fi)~
 113       $output_objdir/impgen $dir/$soroot > $output_objdir/$soname-def'
 114
 115     old_archive_from_expsyms_cmds='$DLLTOOL --as=$AS --dllname $soname --def $output_objdir/$soname-def --output-lib $output_objdir/$newlib'
 116
 117     # cygwin and mingw dlls have different entry points and sets of symbols
 118     # to exclude.
 119     # FIXME: what about values for MSVC?
 120     dll_entry=__cygwin_dll_entry@12
 121     dll_exclude_symbols=DllMain@12,_cygwin_dll_entry@12,_cygwin_noncygwin_dll_entry@12~
 122     case $host_os in
 123     mingw*)
 124       # mingw values
 125       dll_entry=_DllMainCRTStartup@12
 126       dll_exclude_symbols=DllMain@12,DllMainCRTStartup@12,DllEntryPoint@12~
 127       ;;
 128     esac
 129
 130     # mingw and cygwin differ, and it's simplest to just exclude the union
 131     # of the two symbol sets.
 132     dll_exclude_symbols=DllMain@12,_cygwin_dll_entry@12,_cygwin_noncygwin_dll_entry@12,DllMainCRTStartup@12,DllEntryPoint@12
 133
 134     # recent cygwin and mingw systems supply a stub DllMain which the user
 135     # can override, but on older systems we have to supply one (in ltdll.c)
 136     if test "x$lt_cv_need_dllmain" = "xyes"; then
 137       ltdll_obj='$output_objdir/$soname-ltdll.'"$objext "
 138       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~
 139         test -f $output_objdir/$soname-ltdll.$objext || (cd $output_objdir && $CC -c $soname-ltdll.c)~'
 140     else
 141       ltdll_obj=
 142       ltdll_cmds=
 143     fi
 144
 145     # Extract the symbol export list from an `--export-all' def file,
 146     # then regenerate the def file from the symbol export list, so that
 147     # the compiled dll only exports the symbol export list.
 148     # Be careful not to strip the DATA tag left be newer dlltools.
 149     export_symbols_cmds="$ltdll_cmds"'
 150       $DLLTOOL --export-all --exclude-symbols '$dll_exclude_symbols' --output-def $output_objdir/$soname-def '$ltdll_obj'$libobjs $convenience~
 151       sed -e "1,/EXPORTS/d" -e "s/ @ [0-9]*//" -e "s/ *;.*$//" < $output_objdir/$soname-def > $export_symbols'
 152
 153     # If the export-symbols file already is a .def file (1st line
 154     # is EXPORTS), use it as is.
 155     # If DATA tags from a recent dlltool are present, honour them!
 156     archive_expsym_cmds='if test "x`head -1 $export_symbols`" = xEXPORTS; then
 157         cp $export_symbols $output_objdir/$soname-def;
 158       else
 159         echo EXPORTS > $output_objdir/$soname-def;
 160         _lt_hint=1;
 161         cat $export_symbols | while read symbol; do
 162          set dummy \$symbol;
 163          case \[$]# in
 164            2) echo "   \[$]2 @ \$_lt_hint ; " >> $output_objdir/$soname-def;;
 165            *) echo "     \[$]2 @ \$_lt_hint \[$]3 ; " >> $output_objdir/$soname-def;;
 166          esac;
 167          _lt_hint=`expr 1 + \$_lt_hint`;
 168         done;
 169       fi~
 170       '"$ltdll_cmds"'
 171       $CC -Wl,--base-file,$output_objdir/$soname-base '$lt_cv_cc_dll_switch' -Wl,-e,'$dll_entry' -o $output_objdir/$soname '$ltdll_obj'$libobjs $deplibs $compiler_flags~
 172       $DLLTOOL --as=$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~
 173       $CC -Wl,--base-file,$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~
 174       $DLLTOOL --as=$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~
 175       $CC $output_objdir/$soname-exp '$lt_cv_cc_dll_switch' -Wl,-e,'$dll_entry' -o $output_objdir/$soname '$ltdll_obj'$libobjs $deplibs $compiler_flags'
 176     ;;
 177
 178   darwin* | rhapsody*)
 179     allow_undefined_flag='-undefined suppress'
 180     archive_cmds='$CC `test .$module = .yes && echo -bundle || echo -dynamiclib` $allow_undefined_flag -o $lib $libobjs $deplibs $linkopts -install_name $rpath/$soname `test -n "$verstring" -a x$verstring != x0.0 && echo $verstring`'
 181     # We need to add '_' to the symbols in $export_symbols first
 182     #archive_expsym_cmds="$archive_cmds"' && strip -s $export_symbols'
 183     hardcode_direct=yes
 184     hardcode_shlibpath_var=no
 185     whole_archive_flag_spec='-all_load $convenience'
 186     ;;
 187
 188   netbsd* | knetbsd*-gnu)
 189     if echo __ELF__ | $CC -E - | grep __ELF__ >/dev/null; then
 190       archive_cmds='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib'
 191       wlarc=
 192     else
 193       archive_cmds='$CC -shared -nodefaultlibs $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
 194       archive_expsym_cmds='$CC -shared -nodefaultlibs $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
 195     fi
 196     ;;
 197
 198   solaris* | sysv5*)
 199     if $LD -v 2>&1 | egrep 'BFD 2\.8' > /dev/null; then
 200       ld_shlibs=no
 201       cat <<EOF 1>&2
 202
 203 *** Warning: The releases 2.8.* of the GNU linker cannot reliably
 204 *** create shared libraries on Solaris systems.  Therefore, libtool
 205 *** is disabling shared libraries support.  We urge you to upgrade GNU
 206 *** binutils to release 2.9.1 or newer.  Another option is to modify
 207 *** your PATH or compiler configuration so that the native linker is
 208 *** used, and then restart.
 209
 210 EOF
 211     elif $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
 212       archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
 213       archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
 214     else
 215       ld_shlibs=no
 216     fi
 217     ;;
 218
 219   sunos4*)
 220     archive_cmds='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags'
 221     wlarc=
 222     hardcode_direct=yes
 223     hardcode_shlibpath_var=no
 224     ;;
 225
 226   *)
 227     if $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
 228       archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
 229       archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
 230     else
 231       ld_shlibs=no
 232     fi
 233     ;;
 234   esac
 235
 236   if test "$ld_shlibs" = yes; then
 237     runpath_var=LD_RUN_PATH
 238     hardcode_libdir_flag_spec='${wl}--rpath ${wl}$libdir'
 239     export_dynamic_flag_spec='${wl}--export-dynamic'
 240     case $host_os in
 241     cygwin* | mingw*)
 242       # dlltool doesn't understand --whole-archive et. al.
 243       whole_archive_flag_spec=
 244       ;;
 245     *)
 246       # ancient GNU ld didn't support --whole-archive et. al.
 247       if $LD --help 2>&1 | egrep 'no-whole-archive' > /dev/null; then
 248         whole_archive_flag_spec="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
 249       else
 250         whole_archive_flag_spec=
 251       fi
 252       ;;
 253     esac
 254   fi
 255 else
 256   # PORTME fill in a description of your system's linker (not GNU ld)
 257   case $host_os in
 258   aix3*)
 259     allow_undefined_flag=unsupported
 260     always_export_symbols=yes
 261     archive_expsym_cmds='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname'
 262     # Note: this linker hardcodes the directories in LIBPATH if there
 263     # are no directories specified by -L.
 264     hardcode_minus_L=yes
 265     if test "$with_gcc" = yes && test -z "$link_static_flag"; then
 266       # Neither direct hardcoding nor static linking is supported with a
 267       # broken collect2.
 268       hardcode_direct=unsupported
 269     fi
 270     ;;
 271
 272   aix4* | aix5*)
 273     hardcode_direct=yes
 274     hardcode_libdir_separator=':'
 275     link_all_deplibs=yes
 276     # When large executables or shared objects are built, AIX ld can
 277     # have problems creating the table of contents.  If linking a library
 278     # or program results in "error TOC overflow" add -mminimal-toc to
 279     # CXXFLAGS/CFLAGS for g++/gcc.  In the cases where that is not
 280     # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
 281     if test "$with_gcc" = yes; then
 282       case $host_os in aix4.[012]|aix4.[012].*)
 283       # We only want to do this on AIX 4.2 and lower, the check
 284       # below for broken collect2 doesn't work under 4.3+
 285         collect2name=`${CC} -print-prog-name=collect2`
 286         if test -f "$collect2name" && \
 287            strings "$collect2name" | grep resolve_lib_name >/dev/null
 288         then
 289           # We have reworked collect2
 290           hardcode_direct=yes
 291         else
 292           # We have old collect2
 293           hardcode_direct=unsupported
 294           # It fails to find uninstalled libraries when the uninstalled
 295           # path is not listed in the libpath.  Setting hardcode_minus_L
 296           # to unsupported forces relinking
 297           hardcode_minus_L=yes
 298           hardcode_libdir_flag_spec='-L$libdir'
 299           hardcode_libdir_separator=
 300         fi
 301       esac
 302       shared_flag='-shared'
 303     else
 304       # not using gcc
 305       if test "$host_cpu" = ia64; then
 306         shared_flag='${wl}-G'
 307       else
 308         shared_flag='${wl}-bM:SRE'
 309       fi
 310     fi
 311
 312     if test "$host_cpu" = ia64; then
 313       # On IA64, the linker does run time linking by default, so we don't
 314       # have to do anything special.
 315       aix_use_runtimelinking=no
 316       if test $with_gnu_ld = no; then
 317         exp_sym_flag='-Bexport'
 318         no_entry_flag=""
 319       fi
 320     else
 321       # Test if we are trying to use run time linking, or normal AIX style linking.
 322       # If -brtl is somewhere in LDFLAGS, we need to do run time linking.
 323       aix_use_runtimelinking=no
 324       for ld_flag in $LDFLAGS; do
 325         if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl" ); then
 326           aix_use_runtimelinking=yes
 327           break
 328         fi
 329       done
 330       exp_sym_flag='-bexport'
 331       no_entry_flag='-bnoentry'
 332     fi
 333     # -bexpall does not export symbols beginning with underscore (_)
 334     always_export_symbols=yes
 335     if test "$aix_use_runtimelinking" = yes; then
 336       # Warning - without using the other run time loading flags (-brtl), -berok will
 337       #           link without error, but may produce a broken library.
 338       allow_undefined_flag=' ${wl}-berok'
 339       hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:/usr/lib:/lib'
 340       archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs $compiler_flags ${allow_undefined_flag} '"\${wl}$no_entry_flag \${wl}$exp_sym_flag:\$export_symbols"
 341     else
 342       if test "$host_cpu" = ia64; then
 343         if test $with_gnu_ld = no; then
 344           hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib'
 345           allow_undefined_flag="-z nodefs"
 346           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"
 347         fi
 348       else
 349         allow_undefined_flag=' ${wl}-berok'
 350         # -bexpall does not export symbols beginning with underscore (_)
 351         always_export_symbols=yes
 352         # Exported symbols can be pulled into shared objects from archives
 353         whole_archive_flag_spec=' '
 354         build_libtool_need_lc=yes
 355         hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:/usr/lib:/lib'
 356         # This is similar to how AIX traditionally builds it's shared libraries.
 357         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'
 358       fi
 359     fi
 360     ;;
 361
 362   amigaos*)
 363     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 $output_objdir && a2ixlibrary -32)'
 364     hardcode_libdir_flag_spec='-L$libdir'
 365     hardcode_minus_L=yes
 366     # see comment about different semantics on the GNU ld section
 367     ld_shlibs=no
 368     ;;
 369
 370   cygwin* | mingw*)
 371     # When not using gcc, we currently assume that we are using
 372     # Microsoft Visual C++.
 373     # hardcode_libdir_flag_spec is actually meaningless, as there is
 374     # no search path for DLLs.
 375     hardcode_libdir_flag_spec=' '
 376     allow_undefined_flag=unsupported
 377     # Tell ltmain to make .lib files, not .a files.
 378     libext=lib
 379     # FIXME: Setting linknames here is a bad hack.
 380     archive_cmds='$CC -o $lib $libobjs $compiler_flags `echo "$deplibs" | sed -e '\''s/ -lc$//'\''` -link -dll~linknames='
 381     # The linker will automatically build a .lib file if we build a DLL.
 382     old_archive_from_new_cmds='true'
 383     # FIXME: Should let the user specify the lib program.
 384     old_archive_cmds='lib /OUT:$oldlib$oldobjs$old_deplibs'
 385     fix_srcfile_path='`cygpath -w "$srcfile"`'
 386     ;;
 387
 388   freebsd1*)
 389     ld_shlibs=no
 390     ;;
 391
 392   # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
 393   # support.  Future versions do this automatically, but an explicit c++rt0.o
 394   # does not break anything, and helps significantly (at the cost of a little
 395   # extra space).
 396   freebsd2.2*)
 397     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o'
 398     hardcode_libdir_flag_spec='-R$libdir'
 399     hardcode_direct=yes
 400     hardcode_shlibpath_var=no
 401     ;;
 402
 403   # Unfortunately, older versions of FreeBSD 2 do not have this feature.
 404   freebsd2*)
 405     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
 406     hardcode_direct=yes
 407     hardcode_minus_L=yes
 408     hardcode_shlibpath_var=no
 409     ;;
 410
 411   # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
 412   freebsd* | kfreebsd*-gnu)
 413     archive_cmds='$CC -shared -o $lib $libobjs $deplibs $compiler_flags'
 414     hardcode_libdir_flag_spec='-R$libdir'
 415     hardcode_direct=yes
 416     hardcode_shlibpath_var=no
 417     ;;
 418
 419   hpux9* | hpux10* | hpux11*)
 420     case "$host_cpu" in
 421     ia64*)
 422       hardcode_direct=no
 423       hardcode_shlibpath_var=no
 424       archive_cmds='$LD -b +h $soname -o $lib $libobjs $deplibs $linker_flags'
 425       hardcode_libdir_flag_spec='-L$libdir' ;;
 426     *)
 427       if test $with_gcc = yes; then
 428         case "$host_os" in
 429         hpux9*) archive_cmds='$rm $output_objdir/$soname~$CC -shared -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib' ;;
 430         *) archive_cmds='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags' ;;
 431         esac
 432       else
 433         case $host_os in
 434         hpux9*) archive_cmds='$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 $lib' ;;
 435         *) archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags' ;;
 436         esac
 437       fi
 438       hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
 439       hardcode_libdir_separator=:
 440       hardcode_minus_L=yes # Not in the search PATH, but as the default
 441                            # location of the library.
 442       ;;
 443     esac
 444     export_dynamic_flag_spec='${wl}-E'
 445     hardcode_direct=yes
 446     ;;
 447
 448   irix5* | irix6*)
 449     if test "$with_gcc" = yes; then
 450       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 $lib'
 451     else
 452       archive_cmds='$LD -shared $libobjs $deplibs $linker_flags -soname $soname `test -n "$verstring" && echo -set_version $verstring` -update_registry ${objdir}/so_locations -o $lib'
 453     fi
 454     hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 455     hardcode_libdir_separator=:
 456     link_all_deplibs=yes
 457     ;;
 458
 459   netbsd* | knetbsd*-gnu)
 460     if echo __ELF__ | $CC -E - | grep __ELF__ >/dev/null; then
 461       archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'  # a.out
 462     else
 463       archive_cmds='$LD -shared -o $lib $libobjs $deplibs $linker_flags'      # ELF
 464     fi
 465     hardcode_libdir_flag_spec='-R$libdir'
 466     hardcode_direct=yes
 467     hardcode_shlibpath_var=no
 468     ;;
 469
 470   newsos6)
 471     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linkopts'
 472     hardcode_direct=yes
 473     hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 474     hardcode_libdir_separator=:
 475     hardcode_shlibpath_var=no
 476     ;;
 477
 478   openbsd*)
 479     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
 480     hardcode_libdir_flag_spec='-R$libdir'
 481     hardcode_direct=yes
 482     hardcode_shlibpath_var=no
 483     ;;
 484
 485   os2*)
 486     hardcode_libdir_flag_spec='-L$libdir'
 487     hardcode_minus_L=yes
 488     allow_undefined_flag=unsupported
 489     archive_cmds='$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'
 490     old_archive_from_new_cmds='emximp -o $output_objdir/$libname.a $output_objdir/$libname.def'
 491     ;;
 492
 493   osf3*)
 494     if test "$with_gcc" = yes; then
 495       allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 496       archive_cmds='$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 $lib'
 497     else
 498       allow_undefined_flag=' -expect_unresolved \*'
 499       archive_cmds='$LD -shared${allow_undefined_flag} $libobjs $deplibs $linker_flags -soname $soname `test -n "$verstring" && echo -set_version $verstring` -update_registry ${objdir}/so_locations -o $lib'
 500     fi
 501     hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 502     hardcode_libdir_separator=:
 503     ;;
 504
 505   osf4* | osf5*)        # as osf3* with the addition of -msym flag
 506     if test "$with_gcc" = yes; then
 507       allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 508       archive_cmds='$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 $lib'
 509       hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 510     else
 511       allow_undefined_flag=' -expect_unresolved \*'
 512       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'
 513       archive_expsym_cmds='for i in `cat $export_symbols`; do printf "-exported_symbol " >> $lib.exp; echo "\$i" >> $lib.exp; done; echo "-hidden">> $lib.exp~
 514       $LD -shared${allow_undefined_flag} -input $lib.exp $linker_flags $libobjs $deplibs -soname $soname `test -n "$verstring" && echo -set_version $verstring` -update_registry ${objdir}/so_locations -o $lib~$rm $lib.exp'
 515
 516       # cc supports -rpath directly
 517       hardcode_libdir_flag_spec='-rpath $libdir'
 518     fi
 519     hardcode_libdir_separator=:
 520     ;;
 521
 522   sco3.2v5*)
 523     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 524     hardcode_shlibpath_var=no
 525     runpath_var=LD_RUN_PATH
 526     hardcode_runpath_var=yes
 527     ;;
 528
 529   solaris*)
 530     no_undefined_flag=' -z defs'
 531     if test "$with_gcc" = yes; then
 532       archive_cmds='$CC -shared ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
 533       archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 534                   $CC -shared ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$rm $lib.exp'
 535     else
 536       archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
 537       archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 538                   $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$rm $lib.exp'
 539     fi
 540     hardcode_libdir_flag_spec='-R$libdir'
 541     hardcode_shlibpath_var=no
 542     case $host_os in
 543     solaris2.[0-5] | solaris2.[0-5].*) ;;
 544     *) # Supported since Solaris 2.6 (maybe 2.5.1?)
 545       whole_archive_flag_spec='-z allextract$convenience -z defaultextract' ;;
 546     esac
 547     link_all_deplibs=yes
 548     ;;
 549
 550   sunos4*)
 551     archive_cmds='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags'
 552     hardcode_libdir_flag_spec='-L$libdir'
 553     hardcode_direct=yes
 554     hardcode_minus_L=yes
 555     hardcode_shlibpath_var=no
 556     ;;
 557
 558   sysv4)
 559     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 560     runpath_var='LD_RUN_PATH'
 561     hardcode_shlibpath_var=no
 562     hardcode_direct=no #Motorola manual says yes, but my tests say they lie
 563     ;;
 564
 565   sysv4.3*)
 566     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 567     hardcode_shlibpath_var=no
 568     export_dynamic_flag_spec='-Bexport'
 569     ;;
 570
 571   sysv5*)
 572     no_undefined_flag=' -z text'
 573     # $CC -shared without GNU ld will not create a library from C++
 574     # object files and a static libstdc++, better avoid it by now
 575     archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
 576     archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 577                 $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$rm $lib.exp'
 578     hardcode_libdir_flag_spec=
 579     hardcode_shlibpath_var=no
 580     runpath_var='LD_RUN_PATH'
 581     ;;
 582
 583   uts4*)
 584     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 585     hardcode_libdir_flag_spec='-L$libdir'
 586     hardcode_shlibpath_var=no
 587     ;;
 588
 589   dgux*)
 590     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 591     hardcode_libdir_flag_spec='-L$libdir'
 592     hardcode_shlibpath_var=no
 593     ;;
 594
 595   sysv4*MP*)
 596     if test -d /usr/nec; then
 597       archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 598       hardcode_shlibpath_var=no
 599       runpath_var=LD_RUN_PATH
 600       hardcode_runpath_var=yes
 601       ld_shlibs=yes
 602     fi
 603     ;;
 604
 605   sysv4.2uw2*)
 606     archive_cmds='$LD -G -o $lib $libobjs $deplibs $linker_flags'
 607     hardcode_direct=yes
 608     hardcode_minus_L=no
 609     hardcode_shlibpath_var=no
 610     hardcode_runpath_var=yes
 611     runpath_var=LD_RUN_PATH
 612     ;;
 613
 614   sysv5uw7* | unixware7*)
 615     no_undefined_flag='${wl}-z ${wl}text'
 616     if test "$GCC" = yes; then
 617       archive_cmds='$CC -shared ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
 618     else
 619       archive_cmds='$CC -G ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
 620     fi
 621     runpath_var='LD_RUN_PATH'
 622     hardcode_shlibpath_var=no
 623     ;;
 624
 625   *)
 626     ld_shlibs=no
 627     ;;
 628   esac
 629 fi
 630
 631 ## Compiler Characteristics: PIC flags, static flags, etc
 632 if test "X${ac_cv_prog_cc_pic+set}" = Xset; then
 633   :
 634 else
 635   ac_cv_prog_cc_pic=
 636   ac_cv_prog_cc_shlib=
 637   ac_cv_prog_cc_wl=
 638   ac_cv_prog_cc_static=
 639   ac_cv_prog_cc_no_builtin=
 640   ac_cv_prog_cc_can_build_shared=$can_build_shared
 641
 642   if test "$with_gcc" = yes; then
 643     ac_cv_prog_cc_wl='-Wl,'
 644     ac_cv_prog_cc_static='-static'
 645
 646     case $host_os in
 647     aix*)
 648       # All AIX code is PIC.
 649       if test "$host_cpu" = ia64; then
 650         # AIX 5 now supports IA64 processor
 651         lt_cv_prog_cc_static='-Bstatic'
 652       else
 653         lt_cv_prog_cc_static='-bnso -bI:/lib/syscalls.exp'
 654       fi
 655       ;;
 656     amigaos*)
 657       # FIXME: we need at least 68020 code to build shared libraries, but
 658       # adding the `-m68020' flag to GCC prevents building anything better,
 659       # like `-m68040'.
 660       ac_cv_prog_cc_pic='-m68020 -resident32 -malways-restore-a4'
 661       ;;
 662     beos* | irix5* | irix6* | osf3* | osf4* | osf5*)
 663       # PIC is the default for these OSes.
 664       ;;
 665     cygwin* | mingw* | os2*)
 666       # This hack is so that the source file can tell whether it is being
 667       # built for inclusion in a dll (and should export symbols for example).
 668       ac_cv_prog_cc_pic='-DDLL_EXPORT'
 669       ;;
 670     darwin* | rhapsody*)
 671       # PIC is the default on this platform
 672       # Common symbols not allowed in MH_DYLIB files
 673       lt_cv_prog_cc_pic='-fno-common'
 674       ;;
 675     *djgpp*)
 676       # DJGPP does not support shared libraries at all
 677       ac_cv_prog_cc_pic=
 678       ;;
 679     sysv4*MP*)
 680       if test -d /usr/nec; then
 681          ac_cv_prog_cc_pic=-Kconform_pic
 682       fi
 683       ;;
 684     *)
 685       ac_cv_prog_cc_pic='-fPIC'
 686       ;;
 687     esac
 688   else
 689     # PORTME Check for PIC flags for the system compiler.
 690     case $host_os in
 691     aix*)
 692      # All AIX code is PIC.
 693       ac_cv_prog_cc_static="$ac_cv_prog_cc_static ${ac_cv_prog_cc_wl}-lC"
 694       ;;
 695
 696     hpux9* | hpux10* | hpux11*)
 697       # Is there a better ac_cv_prog_cc_static that works with the bundled CC?
 698       ac_cv_prog_cc_wl='-Wl,'
 699       ac_cv_prog_cc_static="${ac_cv_prog_cc_wl}-a ${ac_cv_prog_cc_wl}archive"
 700       ac_cv_prog_cc_pic='+Z'
 701       ;;
 702
 703     irix5* | irix6*)
 704       ac_cv_prog_cc_wl='-Wl,'
 705       ac_cv_prog_cc_static='-non_shared'
 706       # PIC (with -KPIC) is the default.
 707       ;;
 708
 709     cygwin* | mingw* | os2*)
 710       # This hack is so that the source file can tell whether it is being
 711       # built for inclusion in a dll (and should export symbols for example).
 712       ac_cv_prog_cc_pic='-DDLL_EXPORT'
 713       ;;
 714
 715     newsos6)
 716       ac_cv_prog_cc_pic='-KPIC'
 717       ac_cv_prog_cc_static='-Bstatic'
 718       ;;
 719
 720     osf3* | osf4* | osf5*)
 721       # All OSF/1 code is PIC.
 722       ac_cv_prog_cc_wl='-Wl,'
 723       ac_cv_prog_cc_static='-non_shared'
 724       ;;
 725
 726     sco3.2v5*)
 727       ac_cv_prog_cc_pic='-Kpic'
 728       ac_cv_prog_cc_static='-dn'
 729       ac_cv_prog_cc_shlib='-belf'
 730       ;;
 731
 732     solaris*)
 733       ac_cv_prog_cc_pic='-KPIC'
 734       ac_cv_prog_cc_static='-Bstatic'
 735       ac_cv_prog_cc_wl='-Wl,'
 736       ;;
 737
 738     sunos4*)
 739       ac_cv_prog_cc_pic='-PIC'
 740       ac_cv_prog_cc_static='-Bstatic'
 741       ac_cv_prog_cc_wl='-Qoption ld '
 742       ;;
 743
 744     sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
 745       ac_cv_prog_cc_pic='-KPIC'
 746       ac_cv_prog_cc_static='-Bstatic'
 747       ac_cv_prog_cc_wl='-Wl,'
 748       ;;
 749
 750     uts4*)
 751       ac_cv_prog_cc_pic='-pic'
 752       ac_cv_prog_cc_static='-Bstatic'
 753       ;;
 754
 755     sysv4*MP*)
 756       if test -d /usr/nec ;then
 757         ac_cv_prog_cc_pic='-Kconform_pic'
 758         ac_cv_prog_cc_static='-Bstatic'
 759       fi
 760       ;;
 761
 762     *)
 763       ac_cv_prog_cc_can_build_shared=no
 764       ;;
 765     esac
 766   fi
 767   case "$host_os" in
 768       # Platforms which do not suport PIC and -DPIC is meaningless
 769       # on them:
 770       *djgpp*)
 771         ac_cv_prog_cc_pic=
 772         ;;
 773       *)
 774         ac_cv_prog_cc_pic="$ac_cv_prog_cc_pic -DPIC"
 775         ;;
 776   esac
 777 fi
 778
 779 need_lc=yes
 780 if test "$enable_shared" = yes && test "$with_gcc" = yes; then
 781   case $archive_cmds in
 782   *'~'*)
 783     # FIXME: we may have to deal with multi-command sequences.
 784     ;;
 785   '$CC '*)
 786     # Test whether the compiler implicitly links with -lc since on some
 787     # systems, -lgcc has to come before -lc. If gcc already passes -lc
 788     # to ld, don't add -lc before -lgcc.
 789     echo $ac_n "checking whether -lc should be explicitly linked in... $ac_c" 1>&6
 790     if eval "test \"`echo '$''{'ac_cv_archive_cmds_needs_lc'+set}'`\" = set"; then
 791       echo $ac_n "(cached) $ac_c" 1>&6
 792       need_lc=$ac_cv_archive_cmds_needs_lc
 793     else
 794       $rm conftest*
 795       echo "static int dummy;" > conftest.$ac_ext
 796       if { (eval echo ltcf-c.sh:need_lc: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>conftest.err; }; then
 797         # Append any warnings to the config.log.
 798         cat conftest.err 1>&5
 799         soname=conftest
 800         lib=conftest
 801         libobjs=conftest.$objext
 802         deplibs=
 803         wl=$ac_cv_prog_cc_wl
 804         compiler_flags=-v
 805         linker_flags=-v
 806         verstring=
 807         output_objdir=.
 808         libname=conftest
 809         save_allow_undefined_flag=$allow_undefined_flag
 810         allow_undefined_flag=
 811         if { (eval echo ltcf-c.sh:need_lc: \"$archive_cmds\") 1>&5; (eval $archive_cmds) 2>&1 | grep " -lc " 1>&5 ; }; then
 812           need_lc=no
 813         fi
 814         allow_undefined_flag=$save_allow_undefined_flag
 815       else
 816         cat conftest.err 1>&5
 817       fi
 818     fi
 819     $rm conftest*
 820     echo "$ac_t$need_lc" 1>&6
 821     ;;
 822   esac
 823 fi
 824 ac_cv_archive_cmds_needs_lc=$need_lc