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   tpf*)
 227     ld_shlibs=yes
 228     ;;
 229
 230   *)
 231     if $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
 232       archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
 233       archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
 234     else
 235       ld_shlibs=no
 236     fi
 237     ;;
 238   esac
 239
 240   if test "$ld_shlibs" = yes; then
 241     runpath_var=LD_RUN_PATH
 242     hardcode_libdir_flag_spec='${wl}--rpath ${wl}$libdir'
 243     export_dynamic_flag_spec='${wl}--export-dynamic'
 244     case $host_os in
 245     cygwin* | mingw*)
 246       # dlltool doesn't understand --whole-archive et. al.
 247       whole_archive_flag_spec=
 248       ;;
 249     *)
 250       # ancient GNU ld didn't support --whole-archive et. al.
 251       if $LD --help 2>&1 | egrep 'no-whole-archive' > /dev/null; then
 252         whole_archive_flag_spec="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
 253       else
 254         whole_archive_flag_spec=
 255       fi
 256       ;;
 257     esac
 258   fi
 259 else
 260   # PORTME fill in a description of your system's linker (not GNU ld)
 261   case $host_os in
 262   aix3*)
 263     allow_undefined_flag=unsupported
 264     always_export_symbols=yes
 265     archive_expsym_cmds='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname'
 266     # Note: this linker hardcodes the directories in LIBPATH if there
 267     # are no directories specified by -L.
 268     hardcode_minus_L=yes
 269     if test "$with_gcc" = yes && test -z "$link_static_flag"; then
 270       # Neither direct hardcoding nor static linking is supported with a
 271       # broken collect2.
 272       hardcode_direct=unsupported
 273     fi
 274     ;;
 275
 276   aix4* | aix5*)
 277     hardcode_direct=yes
 278     hardcode_libdir_separator=':'
 279     link_all_deplibs=yes
 280     # When large executables or shared objects are built, AIX ld can
 281     # have problems creating the table of contents.  If linking a library
 282     # or program results in "error TOC overflow" add -mminimal-toc to
 283     # CXXFLAGS/CFLAGS for g++/gcc.  In the cases where that is not
 284     # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
 285     if test "$with_gcc" = yes; then
 286       case $host_os in aix4.[012]|aix4.[012].*)
 287       # We only want to do this on AIX 4.2 and lower, the check
 288       # below for broken collect2 doesn't work under 4.3+
 289         collect2name=`${CC} -print-prog-name=collect2`
 290         if test -f "$collect2name" && \
 291            strings "$collect2name" | grep resolve_lib_name >/dev/null
 292         then
 293           # We have reworked collect2
 294           hardcode_direct=yes
 295         else
 296           # We have old collect2
 297           hardcode_direct=unsupported
 298           # It fails to find uninstalled libraries when the uninstalled
 299           # path is not listed in the libpath.  Setting hardcode_minus_L
 300           # to unsupported forces relinking
 301           hardcode_minus_L=yes
 302           hardcode_libdir_flag_spec='-L$libdir'
 303           hardcode_libdir_separator=
 304         fi
 305       esac
 306       shared_flag='-shared'
 307     else
 308       # not using gcc
 309       if test "$host_cpu" = ia64; then
 310         shared_flag='${wl}-G'
 311       else
 312         shared_flag='${wl}-bM:SRE'
 313       fi
 314     fi
 315
 316     if test "$host_cpu" = ia64; then
 317       # On IA64, the linker does run time linking by default, so we don't
 318       # have to do anything special.
 319       aix_use_runtimelinking=no
 320       if test $with_gnu_ld = no; then
 321         exp_sym_flag='-Bexport'
 322         no_entry_flag=""
 323       fi
 324     else
 325       # Test if we are trying to use run time linking, or normal AIX style linking.
 326       # If -brtl is somewhere in LDFLAGS, we need to do run time linking.
 327       aix_use_runtimelinking=no
 328       for ld_flag in $LDFLAGS; do
 329         if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl" ); then
 330           aix_use_runtimelinking=yes
 331           break
 332         fi
 333       done
 334       exp_sym_flag='-bexport'
 335       no_entry_flag='-bnoentry'
 336     fi
 337     # -bexpall does not export symbols beginning with underscore (_)
 338     always_export_symbols=yes
 339     if test "$aix_use_runtimelinking" = yes; then
 340       # Warning - without using the other run time loading flags (-brtl), -berok will
 341       #           link without error, but may produce a broken library.
 342       allow_undefined_flag=' ${wl}-berok'
 343       hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:/usr/lib:/lib'
 344       archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs $compiler_flags ${allow_undefined_flag} '"\${wl}$no_entry_flag \${wl}$exp_sym_flag:\$export_symbols"
 345     else
 346       if test "$host_cpu" = ia64; then
 347         if test $with_gnu_ld = no; then
 348           hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib'
 349           allow_undefined_flag="-z nodefs"
 350           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"
 351         fi
 352       else
 353         allow_undefined_flag=' ${wl}-berok'
 354         # -bexpall does not export symbols beginning with underscore (_)
 355         always_export_symbols=yes
 356         # Exported symbols can be pulled into shared objects from archives
 357         whole_archive_flag_spec=' '
 358         build_libtool_need_lc=yes
 359         hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:/usr/lib:/lib'
 360         # This is similar to how AIX traditionally builds it's shared libraries.
 361         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'
 362       fi
 363     fi
 364     ;;
 365
 366   amigaos*)
 367     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 $output_objdir && a2ixlibrary -32)'
 368     hardcode_libdir_flag_spec='-L$libdir'
 369     hardcode_minus_L=yes
 370     # see comment about different semantics on the GNU ld section
 371     ld_shlibs=no
 372     ;;
 373
 374   cygwin* | mingw*)
 375     # When not using gcc, we currently assume that we are using
 376     # Microsoft Visual C++.
 377     # hardcode_libdir_flag_spec is actually meaningless, as there is
 378     # no search path for DLLs.
 379     hardcode_libdir_flag_spec=' '
 380     allow_undefined_flag=unsupported
 381     # Tell ltmain to make .lib files, not .a files.
 382     libext=lib
 383     # FIXME: Setting linknames here is a bad hack.
 384     archive_cmds='$CC -o $lib $libobjs $compiler_flags `echo "$deplibs" | sed -e '\''s/ -lc$//'\''` -link -dll~linknames='
 385     # The linker will automatically build a .lib file if we build a DLL.
 386     old_archive_from_new_cmds='true'
 387     # FIXME: Should let the user specify the lib program.
 388     old_archive_cmds='lib /OUT:$oldlib$oldobjs$old_deplibs'
 389     fix_srcfile_path='`cygpath -w "$srcfile"`'
 390     ;;
 391
 392   freebsd1*)
 393     ld_shlibs=no
 394     ;;
 395
 396   # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
 397   # support.  Future versions do this automatically, but an explicit c++rt0.o
 398   # does not break anything, and helps significantly (at the cost of a little
 399   # extra space).
 400   freebsd2.2*)
 401     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o'
 402     hardcode_libdir_flag_spec='-R$libdir'
 403     hardcode_direct=yes
 404     hardcode_shlibpath_var=no
 405     ;;
 406
 407   # Unfortunately, older versions of FreeBSD 2 do not have this feature.
 408   freebsd2*)
 409     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
 410     hardcode_direct=yes
 411     hardcode_minus_L=yes
 412     hardcode_shlibpath_var=no
 413     ;;
 414
 415   # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
 416   freebsd* | kfreebsd*-gnu)
 417     archive_cmds='$CC -shared -o $lib $libobjs $deplibs $compiler_flags'
 418     hardcode_libdir_flag_spec='-R$libdir'
 419     hardcode_direct=yes
 420     hardcode_shlibpath_var=no
 421     ;;
 422
 423   hpux9* | hpux10* | hpux11*)
 424     case "$host_cpu" in
 425     ia64*)
 426       hardcode_direct=no
 427       hardcode_shlibpath_var=no
 428       archive_cmds='$LD -b +h $soname -o $lib $libobjs $deplibs $linker_flags'
 429       hardcode_libdir_flag_spec='-L$libdir' ;;
 430     *)
 431       if test $with_gcc = yes; then
 432         case "$host_os" in
 433         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 $lib' ;;
 434         *) archive_cmds='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags' ;;
 435         esac
 436       else
 437         case $host_os in
 438         hpux9*) archive_cmds='$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 $lib' ;;
 439         *) archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags' ;;
 440         esac
 441       fi
 442       hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
 443       hardcode_libdir_separator=:
 444       hardcode_minus_L=yes # Not in the search PATH, but as the default
 445                            # location of the library.
 446       ;;
 447     esac
 448     export_dynamic_flag_spec='${wl}-E'
 449     hardcode_direct=yes
 450     ;;
 451
 452   irix5* | irix6*)
 453     if test "$with_gcc" = yes; then
 454       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 $lib'
 455     else
 456       archive_cmds='$LD -shared $libobjs $deplibs $linker_flags -soname $soname `test -n "$verstring" && echo -set_version $verstring` -update_registry ${objdir}/so_locations -o $lib'
 457     fi
 458     hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 459     hardcode_libdir_separator=:
 460     link_all_deplibs=yes
 461     ;;
 462
 463   netbsd* | knetbsd*-gnu)
 464     if echo __ELF__ | $CC -E - | grep __ELF__ >/dev/null; then
 465       archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'  # a.out
 466     else
 467       archive_cmds='$LD -shared -o $lib $libobjs $deplibs $linker_flags'      # ELF
 468     fi
 469     hardcode_libdir_flag_spec='-R$libdir'
 470     hardcode_direct=yes
 471     hardcode_shlibpath_var=no
 472     ;;
 473
 474   newsos6)
 475     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linkopts'
 476     hardcode_direct=yes
 477     hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 478     hardcode_libdir_separator=:
 479     hardcode_shlibpath_var=no
 480     ;;
 481
 482   openbsd*)
 483     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
 484     hardcode_libdir_flag_spec='-R$libdir'
 485     hardcode_direct=yes
 486     hardcode_shlibpath_var=no
 487     ;;
 488
 489   os2*)
 490     hardcode_libdir_flag_spec='-L$libdir'
 491     hardcode_minus_L=yes
 492     allow_undefined_flag=unsupported
 493     archive_cmds='$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'
 494     old_archive_from_new_cmds='emximp -o $output_objdir/$libname.a $output_objdir/$libname.def'
 495     ;;
 496
 497   osf3*)
 498     if test "$with_gcc" = yes; then
 499       allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 500       archive_cmds='$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 $lib'
 501     else
 502       allow_undefined_flag=' -expect_unresolved \*'
 503       archive_cmds='$LD -shared${allow_undefined_flag} $libobjs $deplibs $linker_flags -soname $soname `test -n "$verstring" && echo -set_version $verstring` -update_registry ${objdir}/so_locations -o $lib'
 504     fi
 505     hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 506     hardcode_libdir_separator=:
 507     ;;
 508
 509   osf4* | osf5*)        # as osf3* with the addition of -msym flag
 510     if test "$with_gcc" = yes; then
 511       allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 512       archive_cmds='$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 $lib'
 513       hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 514     else
 515       allow_undefined_flag=' -expect_unresolved \*'
 516       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'
 517       archive_expsym_cmds='for i in `cat $export_symbols`; do printf "-exported_symbol " >> $lib.exp; echo "\$i" >> $lib.exp; done; echo "-hidden">> $lib.exp~
 518       $LD -shared${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'
 519
 520       # cc supports -rpath directly
 521       hardcode_libdir_flag_spec='-rpath $libdir'
 522     fi
 523     hardcode_libdir_separator=:
 524     ;;
 525
 526   sco3.2v5*)
 527     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 528     hardcode_shlibpath_var=no
 529     runpath_var=LD_RUN_PATH
 530     hardcode_runpath_var=yes
 531     ;;
 532
 533   solaris*)
 534     no_undefined_flag=' -z defs'
 535     if test "$with_gcc" = yes; then
 536       archive_cmds='$CC -shared ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
 537       archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 538                   $CC -shared ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$rm $lib.exp'
 539     else
 540       archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
 541       archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 542                   $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$rm $lib.exp'
 543     fi
 544     hardcode_libdir_flag_spec='-R$libdir'
 545     hardcode_shlibpath_var=no
 546     case $host_os in
 547     solaris2.[0-5] | solaris2.[0-5].*) ;;
 548     *) # Supported since Solaris 2.6 (maybe 2.5.1?)
 549       whole_archive_flag_spec='-z allextract$convenience -z defaultextract' ;;
 550     esac
 551     link_all_deplibs=yes
 552     ;;
 553
 554   sunos4*)
 555     archive_cmds='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags'
 556     hardcode_libdir_flag_spec='-L$libdir'
 557     hardcode_direct=yes
 558     hardcode_minus_L=yes
 559     hardcode_shlibpath_var=no
 560     ;;
 561
 562   sysv4)
 563     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 564     runpath_var='LD_RUN_PATH'
 565     hardcode_shlibpath_var=no
 566     hardcode_direct=no #Motorola manual says yes, but my tests say they lie
 567     ;;
 568
 569   sysv4.3*)
 570     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 571     hardcode_shlibpath_var=no
 572     export_dynamic_flag_spec='-Bexport'
 573     ;;
 574
 575   sysv5*)
 576     no_undefined_flag=' -z text'
 577     # $CC -shared without GNU ld will not create a library from C++
 578     # object files and a static libstdc++, better avoid it by now
 579     archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
 580     archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 581                 $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$rm $lib.exp'
 582     hardcode_libdir_flag_spec=
 583     hardcode_shlibpath_var=no
 584     runpath_var='LD_RUN_PATH'
 585     ;;
 586
 587   uts4*)
 588     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 589     hardcode_libdir_flag_spec='-L$libdir'
 590     hardcode_shlibpath_var=no
 591     ;;
 592
 593   dgux*)
 594     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 595     hardcode_libdir_flag_spec='-L$libdir'
 596     hardcode_shlibpath_var=no
 597     ;;
 598
 599   sysv4*MP*)
 600     if test -d /usr/nec; then
 601       archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 602       hardcode_shlibpath_var=no
 603       runpath_var=LD_RUN_PATH
 604       hardcode_runpath_var=yes
 605       ld_shlibs=yes
 606     fi
 607     ;;
 608
 609   sysv4.2uw2*)
 610     archive_cmds='$LD -G -o $lib $libobjs $deplibs $linker_flags'
 611     hardcode_direct=yes
 612     hardcode_minus_L=no
 613     hardcode_shlibpath_var=no
 614     hardcode_runpath_var=yes
 615     runpath_var=LD_RUN_PATH
 616     ;;
 617
 618   sysv5uw7* | unixware7*)
 619     no_undefined_flag='${wl}-z ${wl}text'
 620     if test "$GCC" = yes; then
 621       archive_cmds='$CC -shared ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
 622     else
 623       archive_cmds='$CC -G ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
 624     fi
 625     runpath_var='LD_RUN_PATH'
 626     hardcode_shlibpath_var=no
 627     ;;
 628
 629   *)
 630     ld_shlibs=no
 631     ;;
 632   esac
 633 fi
 634
 635 ## Compiler Characteristics: PIC flags, static flags, etc
 636 if test "X${ac_cv_prog_cc_pic+set}" = Xset; then
 637   :
 638 else
 639   ac_cv_prog_cc_pic=
 640   ac_cv_prog_cc_shlib=
 641   ac_cv_prog_cc_wl=
 642   ac_cv_prog_cc_static=
 643   ac_cv_prog_cc_no_builtin=
 644   ac_cv_prog_cc_can_build_shared=$can_build_shared
 645
 646   if test "$with_gcc" = yes; then
 647     ac_cv_prog_cc_wl='-Wl,'
 648     ac_cv_prog_cc_static='-static'
 649
 650     case $host_os in
 651     aix*)
 652       # All AIX code is PIC.
 653       if test "$host_cpu" = ia64; then
 654         # AIX 5 now supports IA64 processor
 655         lt_cv_prog_cc_static='-Bstatic'
 656       else
 657         lt_cv_prog_cc_static='-bnso -bI:/lib/syscalls.exp'
 658       fi
 659       ;;
 660     amigaos*)
 661       # FIXME: we need at least 68020 code to build shared libraries, but
 662       # adding the `-m68020' flag to GCC prevents building anything better,
 663       # like `-m68040'.
 664       ac_cv_prog_cc_pic='-m68020 -resident32 -malways-restore-a4'
 665       ;;
 666     beos* | irix5* | irix6* | osf3* | osf4* | osf5*)
 667       # PIC is the default for these OSes.
 668       ;;
 669     cygwin* | mingw* | os2*)
 670       # This hack is so that the source file can tell whether it is being
 671       # built for inclusion in a dll (and should export symbols for example).
 672       ac_cv_prog_cc_pic='-DDLL_EXPORT'
 673       ;;
 674     darwin* | rhapsody*)
 675       # PIC is the default on this platform
 676       # Common symbols not allowed in MH_DYLIB files
 677       lt_cv_prog_cc_pic='-fno-common'
 678       ;;
 679     *djgpp*)
 680       # DJGPP does not support shared libraries at all
 681       ac_cv_prog_cc_pic=
 682       ;;
 683     sysv4*MP*)
 684       if test -d /usr/nec; then
 685          ac_cv_prog_cc_pic=-Kconform_pic
 686       fi
 687       ;;
 688     *)
 689       ac_cv_prog_cc_pic='-fPIC'
 690       ;;
 691     esac
 692   else
 693     # PORTME Check for PIC flags for the system compiler.
 694     case $host_os in
 695     aix*)
 696      # All AIX code is PIC.
 697       ac_cv_prog_cc_static="$ac_cv_prog_cc_static ${ac_cv_prog_cc_wl}-lC"
 698       ;;
 699
 700     hpux9* | hpux10* | hpux11*)
 701       # Is there a better ac_cv_prog_cc_static that works with the bundled CC?
 702       ac_cv_prog_cc_wl='-Wl,'
 703       ac_cv_prog_cc_static="${ac_cv_prog_cc_wl}-a ${ac_cv_prog_cc_wl}archive"
 704       ac_cv_prog_cc_pic='+Z'
 705       ;;
 706
 707     irix5* | irix6*)
 708       ac_cv_prog_cc_wl='-Wl,'
 709       ac_cv_prog_cc_static='-non_shared'
 710       # PIC (with -KPIC) is the default.
 711       ;;
 712
 713     cygwin* | mingw* | os2*)
 714       # This hack is so that the source file can tell whether it is being
 715       # built for inclusion in a dll (and should export symbols for example).
 716       ac_cv_prog_cc_pic='-DDLL_EXPORT'
 717       ;;
 718
 719     newsos6)
 720       ac_cv_prog_cc_pic='-KPIC'
 721       ac_cv_prog_cc_static='-Bstatic'
 722       ;;
 723
 724     osf3* | osf4* | osf5*)
 725       # All OSF/1 code is PIC.
 726       ac_cv_prog_cc_wl='-Wl,'
 727       ac_cv_prog_cc_static='-non_shared'
 728       ;;
 729
 730     sco3.2v5*)
 731       ac_cv_prog_cc_pic='-Kpic'
 732       ac_cv_prog_cc_static='-dn'
 733       ac_cv_prog_cc_shlib='-belf'
 734       ;;
 735
 736     solaris*)
 737       ac_cv_prog_cc_pic='-KPIC'
 738       ac_cv_prog_cc_static='-Bstatic'
 739       ac_cv_prog_cc_wl='-Wl,'
 740       ;;
 741
 742     sunos4*)
 743       ac_cv_prog_cc_pic='-PIC'
 744       ac_cv_prog_cc_static='-Bstatic'
 745       ac_cv_prog_cc_wl='-Qoption ld '
 746       ;;
 747
 748     sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
 749       ac_cv_prog_cc_pic='-KPIC'
 750       ac_cv_prog_cc_static='-Bstatic'
 751       ac_cv_prog_cc_wl='-Wl,'
 752       ;;
 753
 754     uts4*)
 755       ac_cv_prog_cc_pic='-pic'
 756       ac_cv_prog_cc_static='-Bstatic'
 757       ;;
 758
 759     sysv4*MP*)
 760       if test -d /usr/nec ;then
 761         ac_cv_prog_cc_pic='-Kconform_pic'
 762         ac_cv_prog_cc_static='-Bstatic'
 763       fi
 764       ;;
 765
 766     *)
 767       ac_cv_prog_cc_can_build_shared=no
 768       ;;
 769     esac
 770   fi
 771   case "$host_os" in
 772       # Platforms which do not suport PIC and -DPIC is meaningless
 773       # on them:
 774       *djgpp*)
 775         ac_cv_prog_cc_pic=
 776         ;;
 777       *)
 778         ac_cv_prog_cc_pic="$ac_cv_prog_cc_pic -DPIC"
 779         ;;
 780   esac
 781 fi
 782
 783 need_lc=yes
 784 if test "$enable_shared" = yes && test "$with_gcc" = yes; then
 785   case $archive_cmds in
 786   *'~'*)
 787     # FIXME: we may have to deal with multi-command sequences.
 788     ;;
 789   '$CC '*)
 790     # Test whether the compiler implicitly links with -lc since on some
 791     # systems, -lgcc has to come before -lc. If gcc already passes -lc
 792     # to ld, don't add -lc before -lgcc.
 793     echo $ac_n "checking whether -lc should be explicitly linked in... $ac_c" 1>&6
 794     if eval "test \"`echo '$''{'ac_cv_archive_cmds_needs_lc'+set}'`\" = set"; then
 795       echo $ac_n "(cached) $ac_c" 1>&6
 796       need_lc=$ac_cv_archive_cmds_needs_lc
 797     else
 798       $rm conftest*
 799       echo "static int dummy;" > conftest.$ac_ext
 800       if { (eval echo ltcf-c.sh:need_lc: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>conftest.err; }; then
 801         # Append any warnings to the config.log.
 802         cat conftest.err 1>&5
 803         soname=conftest
 804         lib=conftest
 805         libobjs=conftest.$objext
 806         deplibs=
 807         wl=$ac_cv_prog_cc_wl
 808         compiler_flags=-v
 809         linker_flags=-v
 810         verstring=
 811         output_objdir=.
 812         libname=conftest
 813         save_allow_undefined_flag=$allow_undefined_flag
 814         allow_undefined_flag=
 815         if { (eval echo ltcf-c.sh:need_lc: \"$archive_cmds\") 1>&5; (eval $archive_cmds) 2>&1 | grep " -lc " 1>&5 ; }; then
 816           need_lc=no
 817         fi
 818         allow_undefined_flag=$save_allow_undefined_flag
 819       else
 820         cat conftest.err 1>&5
 821       fi
 822     fi
 823     $rm conftest*
 824     echo "$ac_t$need_lc" 1>&6
 825     ;;
 826   esac
 827 fi
 828 ac_cv_archive_cmds_needs_lc=$need_lc