ltcf-c.sh

   1 #### This script is meant to be sourced by ltconfig.
   2
   3 # $Id$
   4
   5 # ltcf-c.sh - Create a C compiler specific configuration
   6 #
   7 # Copyright (C) 1996-2000 Free Software Foundation, Inc.
   8 # Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
   9 #
  10 # This file is free software; you can redistribute it and/or modify it
  11 # under the terms of the GNU General Public License as published by
  12 # the Free Software Foundation; either version 2 of the License, or
  13 # (at your option) any later version.
  14 #
  15 # This program is distributed in the hope that it will be useful, but
  16 # WITHOUT ANY WARRANTY; without even the implied warranty of
  17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18 # General Public License for more details.
  19 #
  20 # You should have received a copy of the GNU General Public License
  21 # along with this program; if not, write to the Free Software
  22 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23 #
  24 # As a special exception to the GNU General Public License, if you
  25 # distribute this file as part of a program that contains a
  26 # configuration script generated by Autoconf, you may include it under
  27 # the same distribution terms that you use for the rest of that program.
  28
  29
  30 # Source file extension for C test sources.
  31 ac_ext=c
  32
  33 # Object file extension for compiled C test sources.
  34 objext=o
  35
  36 # Code to be used in simple compile tests
  37 lt_simple_compile_test_code="int some_variable = 0;"
  38
  39 # Code to be used in simple link tests
  40 lt_simple_link_test_code='main(){return(0);}'
  41
  42 ## Linker Characteristics
  43 case "$host_os" in
  44 cygwin* | mingw*)
  45   # FIXME: the MSVC++ port hasn't been tested in a loooong time
  46   # When not using gcc, we currently assume that we are using
  47   # Microsoft Visual C++.
  48   if test "$with_gcc" != yes; then
  49     with_gnu_ld=no
  50   fi
  51   ;;
  52
  53 esac
  54
  55 ld_shlibs=yes
  56 if test "$with_gnu_ld" = yes; then
  57   # If archive_cmds runs LD, not CC, wlarc should be empty
  58   wlarc='${wl}'
  59
  60   # See if GNU ld supports shared libraries.
  61   case "$host_os" in
  62   aix3* | aix4*)
  63     # On AIX, the GNU linker is very broken
  64     ld_shlibs=no
  65     cat <<EOF 1>&2
  66
  67 *** Warning: the GNU linker, at least up to release 2.9.1, is reported
  68 *** to be unable to reliably create shared libraries on AIX.
  69 *** Therefore, libtool is disabling shared libraries support.  If you
  70 *** really care for shared libraries, you may want to modify your PATH
  71 *** so that a non-GNU linker is found, and then restart.
  72
  73 EOF
  74     ;;
  75
  76   amigaos*)
  77     archive_cmds='$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 $linker_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 $output_objdir && \
 111       if test "x$HOST_CC" != "x" ; then $HOST_CC -o impgen impgen.c ; \
 112       else $CC -o impgen impgen.c ; fi)~
 113       $output_objdir/impgen $dir/$soname > $output_objdir/$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 DATA tags from a recent dlltool are present, honour them!
 154     archive_expsym_cmds='echo EXPORTS > $output_objdir/$soname-def~
 155       _lt_hint=1;
 156       cat $export_symbols | while read symbol; do
 157         set dummy \$symbol;
 158         case \$# in
 159           2) echo "     \$2 @ \$_lt_hint ; " >> $output_objdir/$soname-def;;
 160           *) echo "     \$2 @ \$_lt_hint \$3 ; " >> $output_objdir/$soname-def;;
 161         esac;
 162         _lt_hint=`expr 1 + \$_lt_hint`;
 163       done~
 164       '"$ltdll_cmds"'
 165       $CC -Wl,--base-file,$output_objdir/$soname-base '$lt_cv_cc_dll_switch' -Wl,-e,'$dll_entry' -o $lib '$ltdll_obj'$libobjs $deplibs $compiler_flags~
 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       $CC -Wl,--base-file,$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~
 168       $DLLTOOL --as=$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~
 169       $CC $output_objdir/$soname-exp '$lt_cv_cc_dll_switch' -Wl,-e,'$dll_entry' -o $lib '$ltdll_obj'$libobjs $deplibs $compiler_flags'
 170     ;;
 171
 172   netbsd*)
 173     if echo __ELF__ | $CC -E - | grep __ELF__ >/dev/null; then
 174       archive_cmds='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib'
 175       wlarc=
 176     else
 177       archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
 178       archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
 179     fi
 180     ;;
 181
 182   solaris* | sysv5*)
 183     if $LD -v 2>&1 | egrep 'BFD 2\.8' > /dev/null; then
 184       ld_shlibs=no
 185       cat <<EOF 1>&2
 186
 187 *** Warning: The releases 2.8.* of the GNU linker cannot reliably
 188 *** create shared libraries on Solaris systems.  Therefore, libtool
 189 *** is disabling shared libraries support.  We urge you to upgrade GNU
 190 *** binutils to release 2.9.1 or newer.  Another option is to modify
 191 *** your PATH or compiler configuration so that the native linker is
 192 *** used, and then restart.
 193
 194 EOF
 195     elif $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
 196       archive_cmds='$CC -shared $libobjs $deplibs $linker_flags ${wl}-soname $wl$soname -o $lib'
 197       archive_expsym_cmds='$CC -shared $libobjs $deplibs $linker_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
 198     else
 199       ld_shlibs=no
 200     fi
 201     ;;
 202
 203   sunos4*)
 204     archive_cmds='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags'
 205     wlarc=
 206     hardcode_direct=yes
 207     hardcode_shlibpath_var=no
 208     ;;
 209
 210   *)
 211     if $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
 212       archive_cmds='$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 $lib'
 214     else
 215       ld_shlibs=no
 216     fi
 217     ;;
 218   esac
 219
 220   if test "$ld_shlibs" = yes; then
 221     runpath_var=LD_RUN_PATH
 222     hardcode_libdir_flag_spec="$wlarc"'--rpath '"$wlarc"'$libdir'
 223     export_dynamic_flag_spec="$wlarc"'--export-dynamic'
 224     case $host_os in
 225     cygwin* | mingw*)
 226       # dlltool doesn't understand --whole-archive et. al.
 227       whole_archive_flag_spec=
 228       ;;
 229     *)
 230       # ancient GNU ld didn't support --whole-archive et. al.
 231       if $LD --help 2>&1 | egrep 'no-whole-archive' > /dev/null; then
 232         whole_archive_flag_spec="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
 233       else
 234         whole_archive_flag_spec=
 235       fi
 236       ;;
 237     esac
 238   fi
 239 else
 240   # PORTME fill in a description of your system's linker (not GNU ld)
 241   case "$host_os" in
 242   aix3*)
 243     allow_undefined_flag=unsupported
 244     always_export_symbols=yes
 245     archive_expsym_cmds='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname'
 246     # Note: this linker hardcodes the directories in LIBPATH if there
 247     # are no directories specified by -L.
 248     hardcode_minus_L=yes
 249     if test "$with_gcc" = yes && test -z "$link_static_flag"; then
 250       # Neither direct hardcoding nor static linking is supported with a
 251       # broken collect2.
 252       hardcode_direct=unsupported
 253     fi
 254     ;;
 255
 256   aix4*)
 257     hardcode_libdir_flag_spec='${wl}-b ${wl}nolibpath ${wl}-b ${wl}libpath:$libdir:/usr/lib:/lib'
 258     hardcode_libdir_separator=':'
 259     if test "$with_gcc" = yes; then
 260       collect2name=`${CC} -print-prog-name=collect2`
 261       if test -f "$collect2name" && \
 262          strings "$collect2name" | grep resolve_lib_name >/dev/null
 263       then
 264         # We have reworked collect2
 265         hardcode_direct=yes
 266       else
 267         # We have old collect2
 268         hardcode_direct=unsupported
 269         # It fails to find uninstalled libraries when the uninstalled
 270         # path is not listed in the libpath.  Setting hardcode_minus_L
 271         # to unsupported forces relinking
 272         hardcode_minus_L=yes
 273         hardcode_libdir_flag_spec='-L$libdir'
 274         hardcode_libdir_separator=
 275       fi
 276       shared_flag='-shared'
 277     else
 278       shared_flag='${wl}-bM:SRE'
 279       hardcode_direct=yes
 280     fi
 281     allow_undefined_flag=' ${wl}-berok'
 282     archive_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs $compiler_flags ${wl}-bexpall ${wl}-bnoentry${allow_undefined_flag}'
 283     archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs $compiler_flags ${wl}-bE:$export_symbols ${wl}-bnoentry${allow_undefined_flag}'
 284     case "$host_os" in aix4.[01]|aix4.[01].*)
 285       # According to Greg Wooledge, -bexpall is only supported from AIX 4.2 on
 286       always_export_symbols=yes ;;
 287     esac
 288    ;;
 289
 290   amigaos*)
 291     archive_cmds='$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 $output_objdir && a2ixlibrary -32)'
 292     hardcode_libdir_flag_spec='-L$libdir'
 293     hardcode_minus_L=yes
 294     # see comment about different semantics on the GNU ld section
 295     ld_shlibs=no
 296     ;;
 297
 298   cygwin* | mingw*)
 299     # When not using gcc, we currently assume that we are using
 300     # Microsoft Visual C++.
 301     # hardcode_libdir_flag_spec is actually meaningless, as there is
 302     # no search path for DLLs.
 303     hardcode_libdir_flag_spec=' '
 304     allow_undefined_flag=unsupported
 305     # Tell ltmain to make .lib files, not .a files.
 306     libext=lib
 307     # FIXME: Setting linknames here is a bad hack.
 308     archive_cmds='$CC -o $lib $libobjs $compiler_flags `echo "$deplibs" | sed -e '\''s/ -lc$//'\''` -link -dll~linknames='
 309     # The linker will automatically build a .lib file if we build a DLL.
 310     old_archive_from_new_cmds='true'
 311     # FIXME: Should let the user specify the lib program.
 312     old_archive_cmds='lib /OUT:$oldlib$oldobjs$old_deplibs'
 313     fix_srcfile_path='`cygpath -w $srcfile`'
 314     ;;
 315
 316   freebsd1*)
 317     ld_shlibs=no
 318     ;;
 319
 320   # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
 321   # support.  Future versions do this automatically, but an explicit c++rt0.o
 322   # does not break anything, and helps significantly (at the cost of a little
 323   # extra space).
 324   freebsd2.2*)
 325     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o'
 326     hardcode_libdir_flag_spec='-R$libdir'
 327     hardcode_direct=yes
 328     hardcode_shlibpath_var=no
 329     ;;
 330
 331   # Unfortunately, older versions of FreeBSD 2 do not have this feature.
 332   freebsd2*)
 333     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
 334     hardcode_direct=yes
 335     hardcode_minus_L=yes
 336     hardcode_shlibpath_var=no
 337     ;;
 338
 339   # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
 340   freebsd*)
 341     archive_cmds='$CC -shared -o $lib $libobjs $deplibs $compiler_flags'
 342     hardcode_libdir_flag_spec='-R$libdir'
 343     hardcode_direct=yes
 344     hardcode_shlibpath_var=no
 345     ;;
 346
 347   hpux9* | hpux10* | hpux11*)
 348     case "$host_os" in
 349     hpux9*) archive_cmds='$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 $lib' ;;
 350     *) archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags' ;;
 351     esac
 352     hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
 353     hardcode_libdir_separator=:
 354     hardcode_direct=yes
 355     hardcode_minus_L=yes # Not in the search PATH, but as the default
 356                          # location of the library.
 357     export_dynamic_flag_spec='${wl}-E'
 358     ;;
 359
 360   irix5* | irix6*)
 361     if test "$with_gcc" = yes; then
 362       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 $lib'
 363     else
 364       archive_cmds='$LD -shared $libobjs $deplibs $linker_flags -soname $soname `test -n "$verstring" && echo -set_version $verstring` -update_registry ${objdir}/so_locations -o $lib'
 365     fi
 366     hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 367     hardcode_libdir_separator=:
 368     link_all_deplibs=yes
 369     ;;
 370
 371   netbsd*)
 372     if echo __ELF__ | $CC -E - | grep __ELF__ >/dev/null; then
 373       archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'  # a.out
 374     else
 375       archive_cmds='$LD -shared -o $lib $libobjs $deplibs $linker_flags'      # ELF
 376     fi
 377     hardcode_libdir_flag_spec='${wl}-R$libdir'
 378     hardcode_direct=yes
 379     hardcode_shlibpath_var=no
 380     ;;
 381
 382   openbsd*)
 383     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
 384     hardcode_libdir_flag_spec='-R$libdir'
 385     hardcode_direct=yes
 386     hardcode_shlibpath_var=no
 387     ;;
 388
 389   os2*)
 390     hardcode_libdir_flag_spec='-L$libdir'
 391     hardcode_minus_L=yes
 392     allow_undefined_flag=unsupported
 393     archive_cmds='$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'
 394     old_archive_from_new_cmds='emximp -o $output_objdir/$libname.a $output_objdir/$libname.def'
 395     ;;
 396
 397   osf3*)
 398     if test "$with_gcc" = yes; then
 399       allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 400       archive_cmds='$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 $lib'
 401     else
 402       allow_undefined_flag=' -expect_unresolved \*'
 403       archive_cmds='$LD -shared${allow_undefined_flag} $libobjs $deplibs $linker_flags -soname $soname `test -n "$verstring" && echo -set_version $verstring` -update_registry ${objdir}/so_locations -o $lib'
 404     fi
 405     hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 406     hardcode_libdir_separator=:
 407     ;;
 408
 409   osf4* | osf5*)        # as osf3* with the addition of -msym flag
 410     if test "$with_gcc" = yes; then
 411       allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 412       archive_cmds='$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 $lib'
 413     else
 414       allow_undefined_flag=' -expect_unresolved \*'
 415       archive_cmds='$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 $lib'
 416     fi
 417     hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 418     hardcode_libdir_separator=:
 419     ;;
 420
 421   sco3.2v5*)
 422     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 423     hardcode_shlibpath_var=no
 424     runpath_var=LD_RUN_PATH
 425     hardcode_runpath_var=yes
 426     ;;
 427
 428   solaris*)
 429     no_undefined_flag=' -z text'
 430     # $CC -shared without GNU ld will not create a library from C++
 431     # object files and a static libstdc++, better avoid it by now
 432     archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
 433     archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 434                 $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$rm $lib.exp'
 435     hardcode_libdir_flag_spec='-R$libdir'
 436     hardcode_shlibpath_var=no
 437     case "$host_os" in
 438     solaris2.[0-5] | solaris2.[0-5].*) ;;
 439     *) # Supported since Solaris 2.6 (maybe 2.5.1?)
 440       whole_archive_flag_spec='-z allextract$convenience -z defaultextract' ;;
 441     esac
 442     link_all_deplibs=yes
 443     ;;
 444
 445   sunos4*)
 446     archive_cmds='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags'
 447     hardcode_libdir_flag_spec='-L$libdir'
 448     hardcode_direct=yes
 449     hardcode_minus_L=yes
 450     hardcode_shlibpath_var=no
 451     ;;
 452
 453   sysv4)
 454     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 455     runpath_var='LD_RUN_PATH'
 456     hardcode_shlibpath_var=no
 457     hardcode_direct=no #Motorola manual says yes, but my tests say they lie
 458     ;;
 459
 460   sysv4.3*)
 461     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 462     hardcode_shlibpath_var=no
 463     export_dynamic_flag_spec='-Bexport'
 464     ;;
 465
 466   sysv5*)
 467     no_undefined_flag=' -z text'
 468     # $CC -shared without GNU ld will not create a library from C++
 469     # object files and a static libstdc++, better avoid it by now
 470     archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
 471     archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 472                 $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$rm $lib.exp'
 473     hardcode_libdir_flag_spec=
 474     hardcode_shlibpath_var=no
 475     runpath_var='LD_RUN_PATH'
 476     ;;
 477
 478   uts4*)
 479     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 480     hardcode_libdir_flag_spec='-L$libdir'
 481     hardcode_shlibpath_var=no
 482     ;;
 483
 484   dgux*)
 485     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 486     hardcode_libdir_flag_spec='-L$libdir'
 487     hardcode_shlibpath_var=no
 488     ;;
 489
 490   sysv4*MP*)
 491     if test -d /usr/nec; then
 492       archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 493       hardcode_shlibpath_var=no
 494       runpath_var=LD_RUN_PATH
 495       hardcode_runpath_var=yes
 496       ld_shlibs=yes
 497     fi
 498     ;;
 499
 500   sysv4.2uw2*)
 501     archive_cmds='$LD -G -o $lib $libobjs $deplibs $linker_flags'
 502     hardcode_direct=yes
 503     hardcode_minus_L=no
 504     hardcode_shlibpath_var=no
 505     hardcode_runpath_var=yes
 506     runpath_var=LD_RUN_PATH
 507     ;;
 508
 509   unixware7*)
 510     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 511     runpath_var='LD_RUN_PATH'
 512     hardcode_shlibpath_var=no
 513     ;;
 514
 515   *)
 516     ld_shlibs=no
 517     ;;
 518   esac
 519 fi
 520
 521 ## Compiler Characteristics: PIC flags, static flags, etc
 522 if test "X${ac_cv_prog_cc_pic+set}" = Xset; then
 523   :
 524 else
 525   ac_cv_prog_cc_pic=
 526   ac_cv_prog_cc_shlib=
 527   ac_cv_prog_cc_wl=
 528   ac_cv_prog_cc_static=
 529   ac_cv_prog_cc_no_builtin=
 530   ac_cv_prog_cc_can_build_shared=$can_build_shared
 531
 532   if test "$with_gcc" = yes; then
 533     ac_cv_prog_cc_wl='-Wl,'
 534     ac_cv_prog_cc_static='-static'
 535
 536     case "$host_os" in
 537     beos* | irix5* | irix6* | osf3* | osf4* | osf5*)
 538       # PIC is the default for these OSes.
 539       ;;
 540     aix*)
 541       # Below there is a dirty hack to force normal static linking with -ldl
 542       # The problem is because libdl dynamically linked with both libc and
 543       # libC (AIX C++ library), which obviously doesn't included in libraries
 544       # list by gcc. This cause undefined symbols with -static flags.
 545       # This hack allows C programs to be linked with "-static -ldl", but
 546       # we not sure about C++ programs.
 547       ac_cv_prog_cc_static="$ac_cv_prog_cc_static ${ac_cv_prog_cc_wl}-lC"
 548       ;;
 549     cygwin* | mingw* | os2*)
 550       # This hack is so that the source file can tell whether it is being
 551       # built for inclusion in a dll (and should export symbols for example).
 552       ac_cv_prog_cc_pic='-DDLL_EXPORT'
 553       ;;
 554     amigaos*)
 555       # FIXME: we need at least 68020 code to build shared libraries, but
 556       # adding the `-m68020' flag to GCC prevents building anything better,
 557       # like `-m68040'.
 558       ac_cv_prog_cc_pic='-m68020 -resident32 -malways-restore-a4'
 559       ;;
 560     sysv4*MP*)
 561       if test -d /usr/nec; then
 562          ac_cv_prog_cc_pic=-Kconform_pic
 563       fi
 564       ;;
 565     *)
 566       ac_cv_prog_cc_pic='-fPIC'
 567       ;;
 568     esac
 569   else
 570     # PORTME Check for PIC flags for the system compiler.
 571     case "$host_os" in
 572     aix3* | aix4*)
 573      # All AIX code is PIC.
 574       ac_cv_prog_cc_static='-bnso -bI:/lib/syscalls.exp'
 575       ;;
 576
 577     hpux9* | hpux10* | hpux11*)
 578       # Is there a better ac_cv_prog_cc_static that works with the bundled CC?
 579       ac_cv_prog_cc_wl='-Wl,'
 580       ac_cv_prog_cc_static="${ac_cv_prog_cc_wl}-a ${ac_cv_prog_cc_wl}archive"
 581       ac_cv_prog_cc_pic='+Z'
 582       ;;
 583
 584     irix5* | irix6*)
 585       ac_cv_prog_cc_wl='-Wl,'
 586       ac_cv_prog_cc_static='-non_shared'
 587       # PIC (with -KPIC) is the default.
 588       ;;
 589
 590     cygwin* | mingw* | os2*)
 591       # This hack is so that the source file can tell whether it is being
 592       # built for inclusion in a dll (and should export symbols for example).
 593       ac_cv_prog_cc_pic='-DDLL_EXPORT'
 594       ;;
 595
 596     osf3* | osf4* | osf5*)
 597       # All OSF/1 code is PIC.
 598       ac_cv_prog_cc_wl='-Wl,'
 599       ac_cv_prog_cc_static='-non_shared'
 600       ;;
 601
 602     sco3.2v5*)
 603       ac_cv_prog_cc_pic='-Kpic'
 604       ac_cv_prog_cc_static='-dn'
 605       ac_cv_prog_cc_shlib='-belf'
 606       ;;
 607
 608     solaris*)
 609       ac_cv_prog_cc_pic='-KPIC'
 610       ac_cv_prog_cc_static='-Bstatic'
 611       ac_cv_prog_cc_wl='-Wl,'
 612       ;;
 613
 614     sunos4*)
 615       ac_cv_prog_cc_pic='-PIC'
 616       ac_cv_prog_cc_static='-Bstatic'
 617       ac_cv_prog_cc_wl='-Qoption ld '
 618       ;;
 619
 620     sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
 621       ac_cv_prog_cc_pic='-KPIC'
 622       ac_cv_prog_cc_static='-Bstatic'
 623       ac_cv_prog_cc_wl='-Wl,'
 624       ;;
 625
 626     uts4*)
 627       ac_cv_prog_cc_pic='-pic'
 628       ac_cv_prog_cc_static='-Bstatic'
 629       ;;
 630
 631     sysv4*MP*)
 632       if test -d /usr/nec ;then
 633         ac_cv_prog_cc_pic='-Kconform_pic'
 634         ac_cv_prog_cc_static='-Bstatic'
 635       fi
 636       ;;
 637
 638     *)
 639       ac_cv_prog_cc_can_build_shared=no
 640       ;;
 641     esac
 642   fi
 643   ac_cv_prog_cc_pic="$ac_cv_prog_cc_pic -DPIC"
 644 fi
 645
 646 need_lc=yes
 647 if test "$enable_shared" = yes && test "$with_gcc" = yes; then
 648   case "$archive_cmds" in
 649   *'~'*)
 650     # FIXME: we may have to deal with multi-command sequences.
 651     ;;
 652   '$CC '*)
 653     # Test whether the compiler implicitly links with -lc since on some
 654     # systems, -lgcc has to come before -lc. If gcc already passes -lc
 655     # to ld, don't add -lc before -lgcc.
 656     echo $ac_n "checking whether -lc should be explicitly linked in... $ac_c" 1>&6
 657     if eval "test \"`echo '$''{'ac_cv_archive_cmds_needs_lc'+set}'`\" = set"; then
 658       echo $ac_n "(cached) $ac_c" 1>&6
 659       need_lc=$ac_cv_archive_cmds_needs_lc
 660     else
 661       $rm conftest*
 662       echo "static int dummy;" > conftest.$ac_ext
 663       if { (eval echo ltcf-c.sh:need_lc: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>conftest.err; }; then
 664         # Append any warnings to the config.log.
 665         cat conftest.err 1>&5
 666         soname=conftest
 667         lib=conftest
 668         libobjs=conftest.o
 669         deplibs=
 670         wl=$ac_cv_prog_cc_wl
 671         compiler_flags=-v
 672         linker_flags=-v
 673         verstring=
 674         output_objdir=.
 675         libname=conftest
 676         allow_undefined_flag=
 677         if { (eval echo ltcf-c.sh:need_lc: \"$archive_cmds\") 1>&5; (eval $archive_cmds) 2>&1 | grep " -lc " 1>&5 ; }; then
 678           need_lc=no
 679         fi
 680       else
 681         cat conftest.err 1>&5
 682       fi
 683     fi
 684     $rm conftest*
 685     echo "$ac_t$need_lc" 1>&6
 686     ;;
 687   esac
 688 fi
 689 ac_cv_archive_cmds_needs_lc=$need_lc