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 "$host_os" in
  60   aix3* | aix4* | aix5*)
  61     # On AIX, the GNU linker is very broken
  62     ld_shlibs=no
  63     cat <<EOF 1>&2
  64
  65 *** Warning: the GNU linker, at least up to release 2.9.1, is reported
  66 *** to be unable to reliably create shared libraries on AIX.
  67 *** Therefore, libtool is disabling shared libraries support.  If you
  68 *** really care for shared libraries, you may want to modify your PATH
  69 *** so that a non-GNU linker is found, and then restart.
  70
  71 EOF
  72     ;;
  73
  74   amigaos*)
  75     archive_cmds='$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 ${allow_undefined_flag} ${wl}-soname $wl$soname -o $lib'
 211       archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${allow_undefined_flag} ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
 212       no_undefined_flag='${wl}--no-undefined'
 213     else
 214       ld_shlibs=no
 215     fi
 216     ;;
 217   esac
 218
 219   if test "$ld_shlibs" = yes; then
 220     runpath_var=LD_RUN_PATH
 221     hardcode_libdir_flag_spec='${wl}--rpath ${wl}$libdir'
 222     export_dynamic_flag_spec='${wl}--export-dynamic'
 223     case $host_os in
 224     cygwin* | mingw*)
 225       # dlltool doesn't understand --whole-archive et. al.
 226       whole_archive_flag_spec=
 227       ;;
 228     *)
 229       # ancient GNU ld didn't support --whole-archive et. al.
 230       if $LD --help 2>&1 | egrep 'no-whole-archive' > /dev/null; then
 231         whole_archive_flag_spec="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
 232       else
 233         whole_archive_flag_spec=
 234       fi
 235       ;;
 236     esac
 237   fi
 238 else
 239   # PORTME fill in a description of your system's linker (not GNU ld)
 240   case "$host_os" in
 241   aix3*)
 242     allow_undefined_flag=unsupported
 243     always_export_symbols=yes
 244     archive_expsym_cmds='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname'
 245     # Note: this linker hardcodes the directories in LIBPATH if there
 246     # are no directories specified by -L.
 247     hardcode_minus_L=yes
 248     if test "$with_gcc" = yes && test -z "$link_static_flag"; then
 249       # Neither direct hardcoding nor static linking is supported with a
 250       # broken collect2.
 251       hardcode_direct=unsupported
 252     fi
 253     ;;
 254
 255   aix4* | aix5*)
 256     hardcode_libdir_flag_spec='${wl}-b ${wl}nolibpath ${wl}-b ${wl}libpath:$libdir:/usr/lib:/lib'
 257     hardcode_libdir_separator=':'
 258     if test "$with_gcc" = yes; then
 259       collect2name=`${CC} -print-prog-name=collect2`
 260       if test -f "$collect2name" && \
 261          strings "$collect2name" | grep resolve_lib_name >/dev/null
 262       then
 263         # We have reworked collect2
 264         hardcode_direct=yes
 265       else
 266         # We have old collect2
 267         hardcode_direct=unsupported
 268         # It fails to find uninstalled libraries when the uninstalled
 269         # path is not listed in the libpath.  Setting hardcode_minus_L
 270         # to unsupported forces relinking
 271         hardcode_minus_L=yes
 272         hardcode_libdir_flag_spec='-L$libdir'
 273         hardcode_libdir_separator=
 274       fi
 275       shared_flag='-shared'
 276     else
 277       shared_flag='${wl}-bM:SRE'
 278       hardcode_direct=yes
 279     fi
 280     allow_undefined_flag=' ${wl}-berok'
 281     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'
 282     # -bexpall does not export symbols beginning with underscore (_)
 283     always_export_symbols=yes
 284     # Exported symbols can be pulled into shared objects from archives
 285     whole_archive_flag_spec=' '
 286     build_libtool_need_lc=yes
 287
 288     # We don't want to build shared libraries on unknown CPU types.
 289     case $host_cpu in
 290     powerpc | rs6000) ;;
 291     *) ld_shlibs=no ;;
 292     esac
 293     ;;
 294
 295   amigaos*)
 296     archive_cmds='$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 $output_objdir && a2ixlibrary -32)'
 297     hardcode_libdir_flag_spec='-L$libdir'
 298     hardcode_minus_L=yes
 299     # see comment about different semantics on the GNU ld section
 300     ld_shlibs=no
 301     ;;
 302
 303   cygwin* | mingw*)
 304     # When not using gcc, we currently assume that we are using
 305     # Microsoft Visual C++.
 306     # hardcode_libdir_flag_spec is actually meaningless, as there is
 307     # no search path for DLLs.
 308     hardcode_libdir_flag_spec=' '
 309     allow_undefined_flag=unsupported
 310     # Tell ltmain to make .lib files, not .a files.
 311     libext=lib
 312     # FIXME: Setting linknames here is a bad hack.
 313     archive_cmds='$CC -o $lib $libobjs $compiler_flags `echo "$deplibs" | sed -e '\''s/ -lc$//'\''` -link -dll~linknames='
 314     # The linker will automatically build a .lib file if we build a DLL.
 315     old_archive_from_new_cmds='true'
 316     # FIXME: Should let the user specify the lib program.
 317     old_archive_cmds='lib /OUT:$oldlib$oldobjs$old_deplibs'
 318     fix_srcfile_path='`cygpath -w $srcfile`'
 319     ;;
 320
 321   freebsd1*)
 322     ld_shlibs=no
 323     ;;
 324
 325   # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
 326   # support.  Future versions do this automatically, but an explicit c++rt0.o
 327   # does not break anything, and helps significantly (at the cost of a little
 328   # extra space).
 329   freebsd2.2*)
 330     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o'
 331     hardcode_libdir_flag_spec='-R$libdir'
 332     hardcode_direct=yes
 333     hardcode_shlibpath_var=no
 334     ;;
 335
 336   # Unfortunately, older versions of FreeBSD 2 do not have this feature.
 337   freebsd2*)
 338     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
 339     hardcode_direct=yes
 340     hardcode_minus_L=yes
 341     hardcode_shlibpath_var=no
 342     ;;
 343
 344   # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
 345   freebsd*)
 346     archive_cmds='$CC -shared -o $lib $libobjs $deplibs $compiler_flags'
 347     hardcode_libdir_flag_spec='-R$libdir'
 348     hardcode_direct=yes
 349     hardcode_shlibpath_var=no
 350     ;;
 351
 352   hpux9* | hpux10* | hpux11*)
 353     case "$host_os" in
 354     hpux9*) archive_cmds='$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 $lib' ;;
 355     *) archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags' ;;
 356     esac
 357     hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
 358     hardcode_libdir_separator=:
 359     hardcode_direct=yes
 360     hardcode_minus_L=yes # Not in the search PATH, but as the default
 361                          # location of the library.
 362     export_dynamic_flag_spec='${wl}-E'
 363     ;;
 364
 365   irix5* | irix6*)
 366     if test "$with_gcc" = yes; then
 367       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 $lib'
 368     else
 369       archive_cmds='$LD -shared $libobjs $deplibs $linker_flags -soname $soname `test -n "$verstring" && echo -set_version $verstring` -update_registry ${objdir}/so_locations -o $lib'
 370     fi
 371     hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 372     hardcode_libdir_separator=:
 373     link_all_deplibs=yes
 374     ;;
 375
 376   netbsd*)
 377     if echo __ELF__ | $CC -E - | grep __ELF__ >/dev/null; then
 378       archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'  # a.out
 379     else
 380       archive_cmds='$LD -shared -o $lib $libobjs $deplibs $linker_flags'      # ELF
 381     fi
 382     hardcode_libdir_flag_spec='${wl}-R$libdir'
 383     hardcode_direct=yes
 384     hardcode_shlibpath_var=no
 385     ;;
 386
 387   openbsd*)
 388     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
 389     hardcode_libdir_flag_spec='-R$libdir'
 390     hardcode_direct=yes
 391     hardcode_shlibpath_var=no
 392     ;;
 393
 394   os2*)
 395     hardcode_libdir_flag_spec='-L$libdir'
 396     hardcode_minus_L=yes
 397     allow_undefined_flag=unsupported
 398     archive_cmds='$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'
 399     old_archive_from_new_cmds='emximp -o $output_objdir/$libname.a $output_objdir/$libname.def'
 400     ;;
 401
 402   osf3*)
 403     if test "$with_gcc" = yes; then
 404       allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 405       archive_cmds='$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 $lib'
 406     else
 407       allow_undefined_flag=' -expect_unresolved \*'
 408       archive_cmds='$LD -shared${allow_undefined_flag} $libobjs $deplibs $linker_flags -soname $soname `test -n "$verstring" && echo -set_version $verstring` -update_registry ${objdir}/so_locations -o $lib'
 409     fi
 410     hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 411     hardcode_libdir_separator=:
 412     ;;
 413
 414   osf4* | osf5*)        # as osf3* with the addition of -msym flag
 415     if test "$with_gcc" = yes; then
 416       allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
 417       archive_cmds='$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 $lib'
 418     else
 419       allow_undefined_flag=' -expect_unresolved \*'
 420       archive_cmds='$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 $lib'
 421     fi
 422     hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
 423     hardcode_libdir_separator=:
 424     ;;
 425
 426   sco3.2v5*)
 427     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 428     hardcode_shlibpath_var=no
 429     runpath_var=LD_RUN_PATH
 430     hardcode_runpath_var=yes
 431     ;;
 432
 433   solaris*)
 434     no_undefined_flag=' -z text'
 435     if test "$with_gcc" = yes; then
 436       archive_cmds='$CC -shared ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
 437       archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 438                   $CC -shared ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$rm $lib.exp'
 439     else
 440       archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
 441       archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 442                   $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$rm $lib.exp'
 443     fi
 444     hardcode_libdir_flag_spec='-R$libdir'
 445     hardcode_shlibpath_var=no
 446     case "$host_os" in
 447     solaris2.[0-5] | solaris2.[0-5].*) ;;
 448     *) # Supported since Solaris 2.6 (maybe 2.5.1?)
 449       whole_archive_flag_spec='-z allextract$convenience -z defaultextract' ;;
 450     esac
 451     link_all_deplibs=yes
 452     ;;
 453
 454   sunos4*)
 455     archive_cmds='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags'
 456     hardcode_libdir_flag_spec='-L$libdir'
 457     hardcode_direct=yes
 458     hardcode_minus_L=yes
 459     hardcode_shlibpath_var=no
 460     ;;
 461
 462   sysv4)
 463     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 464     runpath_var='LD_RUN_PATH'
 465     hardcode_shlibpath_var=no
 466     hardcode_direct=no #Motorola manual says yes, but my tests say they lie
 467     ;;
 468
 469   sysv4.3*)
 470     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 471     hardcode_shlibpath_var=no
 472     export_dynamic_flag_spec='-Bexport'
 473     ;;
 474
 475   sysv5*)
 476     no_undefined_flag=' -z text'
 477     # $CC -shared without GNU ld will not create a library from C++
 478     # object files and a static libstdc++, better avoid it by now
 479     archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
 480     archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~
 481                 $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$rm $lib.exp'
 482     hardcode_libdir_flag_spec=
 483     hardcode_shlibpath_var=no
 484     runpath_var='LD_RUN_PATH'
 485     ;;
 486
 487   uts4*)
 488     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 489     hardcode_libdir_flag_spec='-L$libdir'
 490     hardcode_shlibpath_var=no
 491     ;;
 492
 493   dgux*)
 494     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 495     hardcode_libdir_flag_spec='-L$libdir'
 496     hardcode_shlibpath_var=no
 497     ;;
 498
 499   sysv4*MP*)
 500     if test -d /usr/nec; then
 501       archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 502       hardcode_shlibpath_var=no
 503       runpath_var=LD_RUN_PATH
 504       hardcode_runpath_var=yes
 505       ld_shlibs=yes
 506     fi
 507     ;;
 508
 509   sysv4.2uw2*)
 510     archive_cmds='$LD -G -o $lib $libobjs $deplibs $linker_flags'
 511     hardcode_direct=yes
 512     hardcode_minus_L=no
 513     hardcode_shlibpath_var=no
 514     hardcode_runpath_var=yes
 515     runpath_var=LD_RUN_PATH
 516     ;;
 517
 518   unixware7*)
 519     archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
 520     runpath_var='LD_RUN_PATH'
 521     hardcode_shlibpath_var=no
 522     ;;
 523
 524   *)
 525     ld_shlibs=no
 526     ;;
 527   esac
 528 fi
 529
 530 ## Compiler Characteristics: PIC flags, static flags, etc
 531 if test "X${ac_cv_prog_cc_pic+set}" = Xset; then
 532   :
 533 else
 534   ac_cv_prog_cc_pic=
 535   ac_cv_prog_cc_shlib=
 536   ac_cv_prog_cc_wl=
 537   ac_cv_prog_cc_static=
 538   ac_cv_prog_cc_no_builtin=
 539   ac_cv_prog_cc_can_build_shared=$can_build_shared
 540
 541   if test "$with_gcc" = yes; then
 542     ac_cv_prog_cc_wl='-Wl,'
 543     ac_cv_prog_cc_static='-static'
 544
 545     case "$host_os" in
 546     beos* | irix5* | irix6* | osf3* | osf4* | osf5*)
 547       # PIC is the default for these OSes.
 548       ;;
 549     aix*)
 550       # Below there is a dirty hack to force normal static linking with -ldl
 551       # The problem is because libdl dynamically linked with both libc and
 552       # libC (AIX C++ library), which obviously doesn't included in libraries
 553       # list by gcc. This cause undefined symbols with -static flags.
 554       # This hack allows C programs to be linked with "-static -ldl", but
 555       # we not sure about C++ programs.
 556       ac_cv_prog_cc_static="$ac_cv_prog_cc_static ${ac_cv_prog_cc_wl}-lC"
 557       ;;
 558     *djgpp*)
 559       # DJGPP does not support shared libraries at all
 560       ac_cv_prog_cc_pic=
 561       ;;
 562     cygwin* | mingw* | os2*)
 563       # This hack is so that the source file can tell whether it is being
 564       # built for inclusion in a dll (and should export symbols for example).
 565       ac_cv_prog_cc_pic='-DDLL_EXPORT'
 566       ;;
 567     amigaos*)
 568       # FIXME: we need at least 68020 code to build shared libraries, but
 569       # adding the `-m68020' flag to GCC prevents building anything better,
 570       # like `-m68040'.
 571       ac_cv_prog_cc_pic='-m68020 -resident32 -malways-restore-a4'
 572       ;;
 573     sysv4*MP*)
 574       if test -d /usr/nec; then
 575          ac_cv_prog_cc_pic=-Kconform_pic
 576       fi
 577       ;;
 578     *)
 579       ac_cv_prog_cc_pic='-fPIC'
 580       ;;
 581     esac
 582   else
 583     # PORTME Check for PIC flags for the system compiler.
 584     case "$host_os" in
 585     aix3* | aix4* | aix5*)
 586      # All AIX code is PIC.
 587       ac_cv_prog_cc_static='-bnso -bI:/lib/syscalls.exp'
 588       ;;
 589
 590     hpux9* | hpux10* | hpux11*)
 591       # Is there a better ac_cv_prog_cc_static that works with the bundled CC?
 592       ac_cv_prog_cc_wl='-Wl,'
 593       ac_cv_prog_cc_static="${ac_cv_prog_cc_wl}-a ${ac_cv_prog_cc_wl}archive"
 594       ac_cv_prog_cc_pic='+Z'
 595       ;;
 596
 597     irix5* | irix6*)
 598       ac_cv_prog_cc_wl='-Wl,'
 599       ac_cv_prog_cc_static='-non_shared'
 600       # PIC (with -KPIC) is the default.
 601       ;;
 602
 603     cygwin* | mingw* | os2*)
 604       # This hack is so that the source file can tell whether it is being
 605       # built for inclusion in a dll (and should export symbols for example).
 606       ac_cv_prog_cc_pic='-DDLL_EXPORT'
 607       ;;
 608
 609     osf3* | osf4* | osf5*)
 610       # All OSF/1 code is PIC.
 611       ac_cv_prog_cc_wl='-Wl,'
 612       ac_cv_prog_cc_static='-non_shared'
 613       ;;
 614
 615     sco3.2v5*)
 616       ac_cv_prog_cc_pic='-Kpic'
 617       ac_cv_prog_cc_static='-dn'
 618       ac_cv_prog_cc_shlib='-belf'
 619       ;;
 620
 621     solaris*)
 622       ac_cv_prog_cc_pic='-KPIC'
 623       ac_cv_prog_cc_static='-Bstatic'
 624       ac_cv_prog_cc_wl='-Wl,'
 625       ;;
 626
 627     sunos4*)
 628       ac_cv_prog_cc_pic='-PIC'
 629       ac_cv_prog_cc_static='-Bstatic'
 630       ac_cv_prog_cc_wl='-Qoption ld '
 631       ;;
 632
 633     sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
 634       ac_cv_prog_cc_pic='-KPIC'
 635       ac_cv_prog_cc_static='-Bstatic'
 636       ac_cv_prog_cc_wl='-Wl,'
 637       ;;
 638
 639     uts4*)
 640       ac_cv_prog_cc_pic='-pic'
 641       ac_cv_prog_cc_static='-Bstatic'
 642       ;;
 643
 644     sysv4*MP*)
 645       if test -d /usr/nec ;then
 646         ac_cv_prog_cc_pic='-Kconform_pic'
 647         ac_cv_prog_cc_static='-Bstatic'
 648       fi
 649       ;;
 650
 651     *)
 652       ac_cv_prog_cc_can_build_shared=no
 653       ;;
 654     esac
 655   fi
 656   case "$host_os" in
 657       # Platforms which do not suport PIC and -DPIC is meaningless
 658       # on them:
 659       *djgpp*)
 660         ac_cv_prog_cc_pic=
 661         ;;
 662       *)
 663         ac_cv_prog_cc_pic="$ac_cv_prog_cc_pic -DPIC"
 664         ;;
 665   esac
 666 fi
 667
 668 need_lc=yes
 669 if test "$enable_shared" = yes && test "$with_gcc" = yes; then
 670   case "$archive_cmds" in
 671   *'~'*)
 672     # FIXME: we may have to deal with multi-command sequences.
 673     ;;
 674   '$CC '*)
 675     # Test whether the compiler implicitly links with -lc since on some
 676     # systems, -lgcc has to come before -lc. If gcc already passes -lc
 677     # to ld, don't add -lc before -lgcc.
 678     echo $ac_n "checking whether -lc should be explicitly linked in... $ac_c" 1>&6
 679     if eval "test \"`echo '$''{'ac_cv_archive_cmds_needs_lc'+set}'`\" = set"; then
 680       echo $ac_n "(cached) $ac_c" 1>&6
 681       need_lc=$ac_cv_archive_cmds_needs_lc
 682     else
 683       $rm conftest*
 684       echo "static int dummy;" > conftest.$ac_ext
 685       if { (eval echo ltcf-c.sh:need_lc: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>conftest.err; }; then
 686         # Append any warnings to the config.log.
 687         cat conftest.err 1>&5
 688         soname=conftest
 689         lib=conftest
 690         libobjs=conftest.o
 691         deplibs=
 692         wl=$ac_cv_prog_cc_wl
 693         compiler_flags=-v
 694         linker_flags=-v
 695         verstring=
 696         output_objdir=.
 697         libname=conftest
 698         save_allow_undefined_flag=$allow_undefined_flag
 699         allow_undefined_flag=
 700         if { (eval echo ltcf-c.sh:need_lc: \"$archive_cmds\") 1>&5; (eval $archive_cmds) 2>&1 | grep " -lc " 1>&5 ; }; then
 701           need_lc=no
 702         fi
 703         allow_undefined_flag=$save_allow_undefined_flag
 704       else
 705         cat conftest.err 1>&5
 706       fi
 707     fi
 708     $rm conftest*
 709     echo "$ac_t$need_lc" 1>&6
 710     ;;
 711   esac
 712 fi
 713 ac_cv_archive_cmds_needs_lc=$need_lc