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 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 "$host_os" in
  60   aix3* | aix4*)
  61     # On AIX, the GNU linker is very broken
  62     ld_shlibs=no
  63     cat <<EOF 1>&2
  64
  65 *** Warning: the GNU linker, at least up to release 2.9.1, is reported
  66 *** to be unable to reliably create shared libraries on AIX.
  67 *** Therefore, libtool is disabling shared libraries support.  If you
  68 *** really care for shared libraries, you may want to modify your PATH
  69 *** so that a non-GNU linker is found, and then restart.
  70
  71 EOF
  72     ;;
  73
  74   amigaos*)
  75     archive_cmds='$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 $output_objdir && a2ixlibrary -32)'
  76     hardcode_libdir_flag_spec='-L$libdir'
  77     hardcode_minus_L=yes
  78
  79     # Samuel A. Falvo II <kc5tja@dolphin.openprojects.net> reports
  80     # that the semantics of dynamic libraries on AmigaOS, at least up
  81     # to version 4, is to share data among multiple programs linked
  82     # with the same dynamic library.  Since this doesn't match the
  83     # behavior of shared libraries on other platforms, we can use
  84     # them.
  85     ld_shlibs=no
  86     ;;
  87
  88   beos*)
  89     if $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
  90       allow_undefined_flag=unsupported
  91       # Joseph Beckenbach <jrb3@best.com> says some releases of gcc
  92       # support --undefined.  This deserves some investigation.  FIXME
  93       archive_cmds='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
  94     else
  95       ld_shlibs=no
  96     fi
  97     ;;
  98
  99   cygwin* | mingw*)
 100     # hardcode_libdir_flag_spec is actually meaningless, as there is
 101     # no search path for DLLs.
 102     hardcode_libdir_flag_spec='-L$libdir'
 103     allow_undefined_flag=unsupported
 104     always_export_symbols=yes
 105
 106     extract_expsyms_cmds='test -f $output_objdir/impgen.c || \
 107       sed -e "/^# \/\* impgen\.c starts here \*\//,/^# \/\* impgen.c ends here \*\// { s/^# //; p; }" -e d < $0 > $output_objdir/impgen.c~
 108       test -f $output_objdir/impgen.exe || (cd $output_objdir && \
 109       if test "x$HOST_CC" != "x" ; then $HOST_CC -o impgen impgen.c ; \
 110       else $CC -o impgen impgen.c ; fi)~
 111       $output_objdir/impgen $dir/$soname > $output_objdir/$soname-def'
 112
 113     old_archive_from_expsyms_cmds='$DLLTOOL --as=$AS --dllname $soname --def $output_objdir/$soname-def --output-lib $output_objdir/$newlib'
 114
 115     # cygwin and mingw dlls have different entry points and sets of symbols
 116     # to exclude.
 117     # FIXME: what about values for MSVC?
 118     dll_entry=__cygwin_dll_entry@12
 119     dll_exclude_symbols=DllMain@12,_cygwin_dll_entry@12,_cygwin_noncygwin_dll_entry@12~
 120     case "$host_os" in
 121     mingw*)
 122       # mingw values
 123       dll_entry=_DllMainCRTStartup@12
 124       dll_exclude_symbols=DllMain@12,DllMainCRTStartup@12,DllEntryPoint@12~
 125       ;;
 126     esac
 127
 128     # mingw and cygwin differ, and it's simplest to just exclude the union
 129     # of the two symbol sets.
 130     dll_exclude_symbols=DllMain@12,_cygwin_dll_entry@12,_cygwin_noncygwin_dll_entry@12,DllMainCRTStartup@12,DllEntryPoint@12
 131
 132     # recent cygwin and mingw systems supply a stub DllMain which the user
 133     # can override, but on older systems we have to supply one (in ltdll.c)
 134     if test "x$lt_cv_need_dllmain" = "xyes"; then
 135       ltdll_obj='$output_objdir/$soname-ltdll.'"$objext "
 136       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~
 137         test -f $output_objdir/$soname-ltdll.$objext || (cd $output_objdir && $CC -c $soname-ltdll.c)~'
 138     else
 139       ltdll_obj=
 140       ltdll_cmds=
 141     fi
 142
 143     # Extract the symbol export list from an `--export-all' def file,
 144     # then regenerate the def file from the symbol export list, so that
 145     # the compiled dll only exports the symbol export list.
 146     # Be careful not to strip the DATA tag left be newer dlltools.
 147     export_symbols_cmds="$ltdll_cmds"'
 148       $DLLTOOL --export-all --exclude-symbols '$dll_exclude_symbols' --output-def $output_objdir/$soname-def '$ltdll_obj'$libobjs $convenience~
 149       sed -e "1,/EXPORTS/d" -e "s/ @ [0-9]*//" -e "s/ *;.*$//" < $output_objdir/$soname-def > $export_symbols'
 150
 151     # If DATA tags from a recent dlltool are present, honour them!
 152     archive_expsym_cmds='echo EXPORTS > $output_objdir/$soname-def~
 153       _lt_hint=1;
 154       cat $export_symbols | while read symbol; do
 155         set dummy \$symbol;
 156         case \$# in
 157           2) echo "     \$2 @ \$_lt_hint ; " >> $output_objdir/$soname-def;;
 158           *) echo "     \$2 @ \$_lt_hint \$3 ; " >> $output_objdir/$soname-def;;
 159         esac;
 160         _lt_hint=`expr 1 + \$_lt_hint`;
 161       done~
 162       '"$ltdll_cmds"'
 163       $CC -Wl,--base-file,$output_objdir/$soname-base '$lt_cv_cc_dll_switch' -Wl,-e,'$dll_entry' -o $lib '$ltdll_obj'$libobjs $deplibs $compiler_flags~
 164       $DLLTOOL --as=$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~
 165       $CC -Wl,--base-file,$output_objdir/$soname-base $output_objdir/$soname-exp '$lt_cv_cc_dll_switch' -Wl,-e,'$dll_entry' -o $lib '$ltdll_obj'$libobjs $deplibs $compiler_flags~
 166       $DLLTOOL --as=$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~
 167       $CC $output_objdir/$soname-exp '$lt_cv_cc_dll_switch' -Wl,-e,'$dll_entry' -o $lib '$ltdll_obj'$libobjs $deplibs $compiler_flags'
 168     ;;
 169
 170   netbsd*)
 171     if echo __ELF__ | $CC -E - | grep __ELF__ >/dev/null; then
 172       archive_cmds='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib'
 173       wlarc=
 174     else
 175       archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
 176       archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
 177     fi
 178     ;;
 179
 180   solaris* | sysv5*)
 181     if $LD -v 2>&1 | egrep 'BFD 2\.8' > /dev/null; then
 182       ld_shlibs=no
 183       cat <<EOF 1>&2
 184
 185 *** Warning: The releases 2.8.* of the GNU linker cannot reliably
 186 *** create shared libraries on Solaris systems.  Therefore, libtool
 187 *** is disabling shared libraries support.  We urge you to upgrade GNU
 188 *** binutils to release 2.9.1 or newer.  Another option is to modify
 189 *** your PATH or compiler configuration so that the native linker is
 190 *** used, and then restart.
 191
 192 EOF
 193     elif $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
 194       archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
 195       archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
 196     else
 197       ld_shlibs=no
 198     fi
 199     ;;
 200
 201   sunos4*)
 202     archive_cmds='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags'
 203     wlarc=
 204     hardcode_direct=yes
 205     hardcode_shlibpath_var=no
 206     ;;
 207
 208   *)
 209     if $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
 210       archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
 211       archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
 212     else
 213       ld_shlibs=no
 214     fi
 215     ;;
 216   esac
 217
 218   if test "$ld_shlibs" = yes; then
 219     runpath_var=LD_RUN_PATH
 220     hardcode_libdir_flag_spec='${wl}--rpath ${wl}$libdir'
 221     export_dynamic_flag_spec='${wl}--export-dynamic'
 222     case $host_os in
 223     cygwin* | mingw*)
 224       # dlltool doesn't understand --whole-archive et. al.
 225       whole_archive_flag_spec=
 226       ;;
 227     *)
 228       # ancient GNU ld didn't support --whole-archive et. al.
 229       if $LD --help 2>&1 | egrep 'no-whole-archive' > /dev/null; then
 230         whole_archive_flag_spec="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
 231       else
 232         whole_archive_flag_spec=
 233       fi
 234       ;;
 235     esac
 236   fi
 237 else
 238   # PORTME fill in a description of your system's linker (not GNU ld)
 239   case "$host_os" in
 240   aix3*)
 241     allow_undefined_flag=unsupported
 242     always_export_symbols=yes
 243     archive_expsym_cmds='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname'
 244     # Note: this linker hardcodes the directories in LIBPATH if there
 245     # are no directories specified by -L.
 246     hardcode_minus_L=yes
 247     if test "$with_gcc" = yes && test -z "$link_static_flag"; then
 248       # Neither direct hardcoding nor static linking is supported with a
 249       # broken collect2.
 250       hardcode_direct=unsupported
 251     fi
 252     ;;
 253
 254   aix4*)
 255     hardcode_libdir_flag_spec='${wl}-b ${wl}nolibpath ${wl}-b ${wl}libpath:$libdir:/usr/lib:/lib'
 256     hardcode_libdir_separator=':'
 257     if test "$with_gcc" = yes; then
 258       collect2name=`${CC} -print-prog-name=collect2`
 259       if test -f "$collect2name" && \
 260          strings "$collect2name" | grep resolve_lib_name >/dev/null
 261       then
 262         # We have reworked collect2
 263         hardcode_direct=yes
 264       else
 265         # We have old collect2
 266         hardcode_direct=unsupported
 267         # It fails to find uninstalled libraries when the uninstalled
 268         # path is not listed in the libpath.  Setting hardcode_minus_L
 269         # to unsupported forces relinking
 270         hardcode_minus_L=yes
 271         hardcode_libdir_flag_spec='-L$libdir'
 272         hardcode_libdir_separator=
 273       fi
 274       shared_flag='-shared'
 275     else
 276       shared_flag='${wl}-bM:SRE'
 277       hardcode_direct=yes
 278     fi
 279     allow_undefined_flag=' ${wl}-berok'
 280     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'
 281     # -bexpall does not export symbols beginning with underscore (_)
 282     always_export_symbols=yes
 283     # Exported symbols can be pulled into shared objects from archives
 284     whole_archive_flag_spec=' '
 285     build_libtool_need_lc=yes
 286     ;;
 287
 288   amigaos*)
 289     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 $output_objdir && a2ixlibrary -32)'
 290     hardcode_libdir_flag_spec='-L$libdir'
 291     hardcode_minus_L=yes
 292     # see comment about different semantics on the GNU ld section
 293     ld_shlibs=no
 294     ;;
 295
 296   cygwin* | mingw*)
 297     # When not using gcc, we currently assume that we are using
 298     # Microsoft Visual C++.
 299     # hardcode_libdir_flag_spec is actually meaningless, as there is
 300     # no search path for DLLs.
 301     hardcode_libdir_flag_spec=' '
 302     allow_undefined_flag=unsupported
 303     # Tell ltmain to make .lib files, not .a files.
 304     libext=lib
 305     # FIXME: Setting linknames here is a bad hack.
 306     archive_cmds='$CC -o $lib $libobjs $compiler_flags `echo "$deplibs" | sed -e '\''s/ -lc$//'\''` -link -dll~linknames='
 307     # The linker will automatically build a .lib file if we build a DLL.
 308     old_archive_from_new_cmds='true'
 309     # FIXME: Should let the user specify the lib program.
 310     old_archive_cmds='lib /OUT:$oldlib$oldobjs$old_deplibs'
 311     fix_srcfile_path='`cygpath -w $srcfile`'
 312     ;;
 313
 314   freebsd1*)
 315     ld_shlibs=no
 316     ;;
 317
 318   # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
 319   # support.  Future versions do this automatically, but an explicit c++rt0.o
 320   # does not break anything, and helps significantly (at the cost of a little
 321   # extra space).
 322   freebsd2.2*)
 323     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o'
 324     hardcode_libdir_flag_spec='-R$libdir'
 325     hardcode_direct=yes
 326     hardcode_shlibpath_var=no
 327     ;;
 328
 329   # Unfortunately, older versions of FreeBSD 2 do not have this feature.
 330   freebsd2*)
 331     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
 332     hardcode_direct=yes
 333     hardcode_minus_L=yes
 334     hardcode_shlibpath_var=no
 335     ;;
 336
 337   # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
 338   freebsd*)
 339     archive_cmds='$CC -shared -o $lib $libobjs $deplibs $compiler_flags'
 340     hardcode_libdir_flag_spec='-R$libdir'
 341     hardcode_direct=yes
 342     hardcode_shlibpath_var=no
 343     ;;
 344
 345   hpux9* | hpux10* | hpux11*)
 346     case "$host_os" in
 347     hpux9*) archive_cmds='$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 $lib' ;;
 348     *) archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags' ;;
 349     esac
 350     hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
 351     hardcode_libdir_separator=:
 352     hardcode_direct=yes
 353     hardcode_minus_L=yes # Not in the search PATH, but as the default
 354                          # location of the library.
 355     export_dynamic_flag_spec='${wl}-E'
 356     ;;
 357
 358   irix5* | irix6*)
 359     if test "$with_gcc" = yes; then
 360       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 $lib'
 361     else
 362       archive_cmds='$LD -shared $libobjs $deplibs $linker_flags -soname $soname `test -n "$verstring" && echo -set_version $verstring` -update_registry ${objdir}/so_locations -o $lib'
 363     fi
 364     hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 365     hardcode_libdir_separator=:
 366     link_all_deplibs=yes
 367     ;;
 368
 369   netbsd*)
 370     if echo __ELF__ | $CC -E - | grep __ELF__ >/dev/null; then
 371       archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'  # a.out
 372     else
 373       archive_cmds='$LD -shared -o $lib $libobjs $deplibs $linker_flags'      # ELF
 374     fi
 375     hardcode_libdir_flag_spec='${wl}-R$libdir'
 376     hardcode_direct=yes
 377     hardcode_shlibpath_var=no
 378     ;;
 379
 380   openbsd*)
 381     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
 382     hardcode_libdir_flag_spec='-R$libdir'
 383     hardcode_direct=yes
 384     hardcode_shlibpath_var=no
 385     ;;
 386
 387   os2*)
 388     hardcode_libdir_flag_spec='-L$libdir'
 389     hardcode_minus_L=yes
 390     allow_undefined_flag=unsupported
 391     archive_cmds='$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'
 392     old_archive_from_new_cmds='emximp -o $output_objdir/$libname.a $output_objdir/$libname.def'
 393     ;;
 394
 395   osf3*)
 396     if test "$with_gcc" = yes; then
 397       allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 398       archive_cmds='$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 $lib'
 399     else
 400       allow_undefined_flag=' -expect_unresolved \*'
 401       archive_cmds='$LD -shared${allow_undefined_flag} $libobjs $deplibs $linker_flags -soname $soname `test -n "$verstring" && echo -set_version $verstring` -update_registry ${objdir}/so_locations -o $lib'
 402     fi
 403     hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 404     hardcode_libdir_separator=:
 405     ;;
 406
 407   osf4* | osf5*)        # as osf3* with the addition of -msym flag
 408     if test "$with_gcc" = yes; then
 409       allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 410       archive_cmds='$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 $lib'
 411     else
 412       allow_undefined_flag=' -expect_unresolved \*'
 413       archive_cmds='$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 $lib'
 414     fi
 415     hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 416     hardcode_libdir_separator=:
 417     ;;
 418
 419   sco3.2v5*)
 420     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 421     hardcode_shlibpath_var=no
 422     runpath_var=LD_RUN_PATH
 423     hardcode_runpath_var=yes
 424     ;;
 425
 426   solaris*)
 427     no_undefined_flag=' -z text'
 428     if test "$with_gcc" = yes; then
 429       archive_cmds='$CC -shared ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
 430       archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 431                   $CC -shared ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$rm $lib.exp'
 432     else
 433       archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
 434       archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 435                   $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$rm $lib.exp'
 436     fi
 437     hardcode_libdir_flag_spec='-R$libdir'
 438     hardcode_shlibpath_var=no
 439     case "$host_os" in
 440     solaris2.[0-5] | solaris2.[0-5].*) ;;
 441     *) # Supported since Solaris 2.6 (maybe 2.5.1?)
 442       whole_archive_flag_spec='-z allextract$convenience -z defaultextract' ;;
 443     esac
 444     link_all_deplibs=yes
 445     ;;
 446
 447   sunos4*)
 448     archive_cmds='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags'
 449     hardcode_libdir_flag_spec='-L$libdir'
 450     hardcode_direct=yes
 451     hardcode_minus_L=yes
 452     hardcode_shlibpath_var=no
 453     ;;
 454
 455   sysv4)
 456     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 457     runpath_var='LD_RUN_PATH'
 458     hardcode_shlibpath_var=no
 459     hardcode_direct=no #Motorola manual says yes, but my tests say they lie
 460     ;;
 461
 462   sysv4.3*)
 463     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 464     hardcode_shlibpath_var=no
 465     export_dynamic_flag_spec='-Bexport'
 466     ;;
 467
 468   sysv5*)
 469     no_undefined_flag=' -z text'
 470     # $CC -shared without GNU ld will not create a library from C++
 471     # object files and a static libstdc++, better avoid it by now
 472     archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
 473     archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 474                 $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$rm $lib.exp'
 475     hardcode_libdir_flag_spec=
 476     hardcode_shlibpath_var=no
 477     runpath_var='LD_RUN_PATH'
 478     ;;
 479
 480   uts4*)
 481     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 482     hardcode_libdir_flag_spec='-L$libdir'
 483     hardcode_shlibpath_var=no
 484     ;;
 485
 486   dgux*)
 487     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 488     hardcode_libdir_flag_spec='-L$libdir'
 489     hardcode_shlibpath_var=no
 490     ;;
 491
 492   sysv4*MP*)
 493     if test -d /usr/nec; then
 494       archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 495       hardcode_shlibpath_var=no
 496       runpath_var=LD_RUN_PATH
 497       hardcode_runpath_var=yes
 498       ld_shlibs=yes
 499     fi
 500     ;;
 501
 502   sysv4.2uw2*)
 503     archive_cmds='$LD -G -o $lib $libobjs $deplibs $linker_flags'
 504     hardcode_direct=yes
 505     hardcode_minus_L=no
 506     hardcode_shlibpath_var=no
 507     hardcode_runpath_var=yes
 508     runpath_var=LD_RUN_PATH
 509     ;;
 510
 511   unixware7*)
 512     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 513     runpath_var='LD_RUN_PATH'
 514     hardcode_shlibpath_var=no
 515     ;;
 516
 517   *)
 518     ld_shlibs=no
 519     ;;
 520   esac
 521 fi
 522
 523 ## Compiler Characteristics: PIC flags, static flags, etc
 524 if test "X${ac_cv_prog_cc_pic+set}" = Xset; then
 525   :
 526 else
 527   ac_cv_prog_cc_pic=
 528   ac_cv_prog_cc_shlib=
 529   ac_cv_prog_cc_wl=
 530   ac_cv_prog_cc_static=
 531   ac_cv_prog_cc_no_builtin=
 532   ac_cv_prog_cc_can_build_shared=$can_build_shared
 533
 534   if test "$with_gcc" = yes; then
 535     ac_cv_prog_cc_wl='-Wl,'
 536     ac_cv_prog_cc_static='-static'
 537
 538     case "$host_os" in
 539     beos* | irix5* | irix6* | osf3* | osf4* | osf5*)
 540       # PIC is the default for these OSes.
 541       ;;
 542     aix*)
 543       # Below there is a dirty hack to force normal static linking with -ldl
 544       # The problem is because libdl dynamically linked with both libc and
 545       # libC (AIX C++ library), which obviously doesn't included in libraries
 546       # list by gcc. This cause undefined symbols with -static flags.
 547       # This hack allows C programs to be linked with "-static -ldl", but
 548       # we not sure about C++ programs.
 549       ac_cv_prog_cc_static="$ac_cv_prog_cc_static ${ac_cv_prog_cc_wl}-lC"
 550       ;;
 551     cygwin* | mingw* | os2*)
 552       # This hack is so that the source file can tell whether it is being
 553       # built for inclusion in a dll (and should export symbols for example).
 554       ac_cv_prog_cc_pic='-DDLL_EXPORT'
 555       ;;
 556     amigaos*)
 557       # FIXME: we need at least 68020 code to build shared libraries, but
 558       # adding the `-m68020' flag to GCC prevents building anything better,
 559       # like `-m68040'.
 560       ac_cv_prog_cc_pic='-m68020 -resident32 -malways-restore-a4'
 561       ;;
 562     sysv4*MP*)
 563       if test -d /usr/nec; then
 564          ac_cv_prog_cc_pic=-Kconform_pic
 565       fi
 566       ;;
 567     *)
 568       ac_cv_prog_cc_pic='-fPIC'
 569       ;;
 570     esac
 571   else
 572     # PORTME Check for PIC flags for the system compiler.
 573     case "$host_os" in
 574     aix3* | aix4*)
 575      # All AIX code is PIC.
 576       ac_cv_prog_cc_static='-bnso -bI:/lib/syscalls.exp'
 577       ;;
 578
 579     hpux9* | hpux10* | hpux11*)
 580       # Is there a better ac_cv_prog_cc_static that works with the bundled CC?
 581       ac_cv_prog_cc_wl='-Wl,'
 582       ac_cv_prog_cc_static="${ac_cv_prog_cc_wl}-a ${ac_cv_prog_cc_wl}archive"
 583       ac_cv_prog_cc_pic='+Z'
 584       ;;
 585
 586     irix5* | irix6*)
 587       ac_cv_prog_cc_wl='-Wl,'
 588       ac_cv_prog_cc_static='-non_shared'
 589       # PIC (with -KPIC) is the default.
 590       ;;
 591
 592     cygwin* | mingw* | os2*)
 593       # This hack is so that the source file can tell whether it is being
 594       # built for inclusion in a dll (and should export symbols for example).
 595       ac_cv_prog_cc_pic='-DDLL_EXPORT'
 596       ;;
 597
 598     osf3* | osf4* | osf5*)
 599       # All OSF/1 code is PIC.
 600       ac_cv_prog_cc_wl='-Wl,'
 601       ac_cv_prog_cc_static='-non_shared'
 602       ;;
 603
 604     sco3.2v5*)
 605       ac_cv_prog_cc_pic='-Kpic'
 606       ac_cv_prog_cc_static='-dn'
 607       ac_cv_prog_cc_shlib='-belf'
 608       ;;
 609
 610     solaris*)
 611       ac_cv_prog_cc_pic='-KPIC'
 612       ac_cv_prog_cc_static='-Bstatic'
 613       ac_cv_prog_cc_wl='-Wl,'
 614       ;;
 615
 616     sunos4*)
 617       ac_cv_prog_cc_pic='-PIC'
 618       ac_cv_prog_cc_static='-Bstatic'
 619       ac_cv_prog_cc_wl='-Qoption ld '
 620       ;;
 621
 622     sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
 623       ac_cv_prog_cc_pic='-KPIC'
 624       ac_cv_prog_cc_static='-Bstatic'
 625       ac_cv_prog_cc_wl='-Wl,'
 626       ;;
 627
 628     uts4*)
 629       ac_cv_prog_cc_pic='-pic'
 630       ac_cv_prog_cc_static='-Bstatic'
 631       ;;
 632
 633     sysv4*MP*)
 634       if test -d /usr/nec ;then
 635         ac_cv_prog_cc_pic='-Kconform_pic'
 636         ac_cv_prog_cc_static='-Bstatic'
 637       fi
 638       ;;
 639
 640     *)
 641       ac_cv_prog_cc_can_build_shared=no
 642       ;;
 643     esac
 644   fi
 645   ac_cv_prog_cc_pic="$ac_cv_prog_cc_pic -DPIC"
 646 fi
 647
 648 need_lc=yes
 649 if test "$enable_shared" = yes && test "$with_gcc" = yes; then
 650   case "$archive_cmds" in
 651   *'~'*)
 652     # FIXME: we may have to deal with multi-command sequences.
 653     ;;
 654   '$CC '*)
 655     # Test whether the compiler implicitly links with -lc since on some
 656     # systems, -lgcc has to come before -lc. If gcc already passes -lc
 657     # to ld, don't add -lc before -lgcc.
 658     echo $ac_n "checking whether -lc should be explicitly linked in... $ac_c" 1>&6
 659     if eval "test \"`echo '$''{'ac_cv_archive_cmds_needs_lc'+set}'`\" = set"; then
 660       echo $ac_n "(cached) $ac_c" 1>&6
 661       need_lc=$ac_cv_archive_cmds_needs_lc
 662     else
 663       $rm conftest*
 664       echo "static int dummy;" > conftest.$ac_ext
 665       if { (eval echo ltcf-c.sh:need_lc: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>conftest.err; }; then
 666         # Append any warnings to the config.log.
 667         cat conftest.err 1>&5
 668         soname=conftest
 669         lib=conftest
 670         libobjs=conftest.o
 671         deplibs=
 672         wl=$ac_cv_prog_cc_wl
 673         compiler_flags=-v
 674         linker_flags=-v
 675         verstring=
 676         output_objdir=.
 677         libname=conftest
 678         save_allow_undefined_flag=$allow_undefined_flag
 679         allow_undefined_flag=
 680         if { (eval echo ltcf-c.sh:need_lc: \"$archive_cmds\") 1>&5; (eval $archive_cmds) 2>&1 | grep " -lc " 1>&5 ; }; then
 681           need_lc=no
 682         fi
 683         allow_undefined_flag=$save_allow_undefined_flag
 684       else
 685         cat conftest.err 1>&5
 686       fi
 687     fi
 688     $rm conftest*
 689     echo "$ac_t$need_lc" 1>&6
 690     ;;
 691   esac
 692 fi
 693 ac_cv_archive_cmds_needs_lc=$need_lc