| 1 | #### This script is meant to be sourced by ltconfig.
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| 2 |
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| 3 | # ltcf-c.sh - Create a C compiler specific configuration
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| 4 | #
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| 5 | # Copyright (C) 1996-2000, 2001 Free Software Foundation, Inc.
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| 6 | # Originally by Gordon Matzigkeit <[email protected]>, 1996
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| 7 | #
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| 8 | # This file is free software; you can redistribute it and/or modify it
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| 9 | # under the terms of the GNU General Public License as published by
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| 10 | # the Free Software Foundation; either version 2 of the License, or
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| 11 | # (at your option) any later version.
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| 12 | #
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| 13 | # This program is distributed in the hope that it will be useful, but
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| 14 | # WITHOUT ANY WARRANTY; without even the implied warranty of
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| 15 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 16 | # General Public License for more details.
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| 17 | #
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| 18 | # You should have received a copy of the GNU General Public License
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| 19 | # along with this program; if not, write to the Free Software
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| 20 | # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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| 21 | #
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| 22 | # As a special exception to the GNU General Public License, if you
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| 23 | # distribute this file as part of a program that contains a
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| 24 | # configuration script generated by Autoconf, you may include it under
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| 25 | # the same distribution terms that you use for the rest of that program.
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| 26 |
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| 27 |
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| 28 | # Source file extension for C test sources.
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| 29 | ac_ext=c
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| 30 |
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| 31 | # Object file extension for compiled C test sources.
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| 32 | objext=o
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| 33 |
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| 34 | # Code to be used in simple compile tests
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| 35 | lt_simple_compile_test_code="int some_variable = 0;"
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| 36 |
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| 37 | # Code to be used in simple link tests
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| 38 | lt_simple_link_test_code='main(){return(0);}'
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| 39 |
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| 40 | ## Linker Characteristics
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| 41 | case $host_os in
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| 42 | cygwin* | mingw*)
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| 43 | # FIXME: the MSVC++ port hasn't been tested in a loooong time
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| 44 | # When not using gcc, we currently assume that we are using
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| 45 | # Microsoft Visual C++.
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| 46 | if test "$with_gcc" != yes; then
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| 47 | with_gnu_ld=no
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| 48 | fi
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| 49 | ;;
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| 50 |
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| 51 | esac
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| 52 |
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| 53 | ld_shlibs=yes
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| 54 | if test "$with_gnu_ld" = yes; then
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| 55 | # If archive_cmds runs LD, not CC, wlarc should be empty
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| 56 | wlarc='${wl}'
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| 57 |
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| 58 | # See if GNU ld supports shared libraries.
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| 59 | case $host_os in
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| 60 | aix3* | aix4* | aix5*)
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| 61 | # On AIX/PPC, the GNU linker is very broken
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| 62 | if test "$host_cpu" != ia64; then
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| 63 | ld_shlibs=no
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| 64 | cat <<EOF 1>&2
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| 65 |
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| 66 | *** Warning: the GNU linker, at least up to release 2.9.1, is reported
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| 67 | *** to be unable to reliably create shared libraries on AIX.
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| 68 | *** Therefore, libtool is disabling shared libraries support. If you
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| 69 | *** really care for shared libraries, you may want to modify your PATH
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| 70 | *** so that a non-GNU linker is found, and then restart.
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| 71 |
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| 72 | EOF
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| 73 | fi
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| 74 | ;;
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| 75 |
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| 76 | amigaos*)
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| 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 $output_objdir && a2ixlibrary -32)'
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| 78 | hardcode_libdir_flag_spec='-L$libdir'
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| 79 | hardcode_minus_L=yes
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| 80 |
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| 81 | # Samuel A. Falvo II <[email protected]> reports
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| 82 | # that the semantics of dynamic libraries on AmigaOS, at least up
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| 83 | # to version 4, is to share data among multiple programs linked
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| 84 | # with the same dynamic library. Since this doesn't match the
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| 85 | # behavior of shared libraries on other platforms, we can use
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| 86 | # them.
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| 87 | ld_shlibs=no
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| 88 | ;;
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| 89 |
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| 90 | beos*)
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| 91 | if $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
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| 92 | allow_undefined_flag=unsupported
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| 93 | # Joseph Beckenbach <[email protected]> says some releases of gcc
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| 94 | # support --undefined. This deserves some investigation. FIXME
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| 95 | archive_cmds='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
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| 96 | else
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| 97 | ld_shlibs=no
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| 98 | fi
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| 99 | ;;
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| 100 |
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| 101 | cygwin* | mingw*)
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| 102 | # hardcode_libdir_flag_spec is actually meaningless, as there is
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| 103 | # no search path for DLLs.
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| 104 | hardcode_libdir_flag_spec='-L$libdir'
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| 105 | allow_undefined_flag=unsupported
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| 106 | always_export_symbols=yes
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| 107 |
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| 108 | extract_expsyms_cmds='test -f $output_objdir/impgen.c || \
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| 109 | sed -e "/^# \/\* impgen\.c starts here \*\//,/^# \/\* impgen.c ends here \*\// { s/^# //; p; }" -e d < $0 > $output_objdir/impgen.c~
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| 110 | test -f $output_objdir/impgen.exe || (cd $output_objdir && \
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| 111 | if test "x$BUILD_CC" != "x" ; then $BUILD_CC -o impgen impgen.c ; \
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| 112 | else $CC -o impgen impgen.c ; fi)~
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| 113 | $output_objdir/impgen $dir/$soroot > $output_objdir/$soname-def'
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| 114 |
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| 115 | old_archive_from_expsyms_cmds='$DLLTOOL --as=$AS --dllname $soname --def $output_objdir/$soname-def --output-lib $output_objdir/$newlib'
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| 116 |
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| 117 | # cygwin and mingw dlls have different entry points and sets of symbols
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| 118 | # to exclude.
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| 119 | # FIXME: what about values for MSVC?
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| 120 | dll_entry=__cygwin_dll_entry@12
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| 121 | dll_exclude_symbols=DllMain@12,_cygwin_dll_entry@12,_cygwin_noncygwin_dll_entry@12~
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| 122 | case $host_os in
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| 123 | mingw*)
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| 124 | # mingw values
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| 125 | dll_entry=_DllMainCRTStartup@12
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| 126 | dll_exclude_symbols=DllMain@12,DllMainCRTStartup@12,DllEntryPoint@12~
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| 127 | ;;
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| 128 | esac
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| 129 |
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| 130 | # mingw and cygwin differ, and it's simplest to just exclude the union
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| 131 | # of the two symbol sets.
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| 132 | dll_exclude_symbols=DllMain@12,_cygwin_dll_entry@12,_cygwin_noncygwin_dll_entry@12,DllMainCRTStartup@12,DllEntryPoint@12
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| 133 |
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| 134 | # recent cygwin and mingw systems supply a stub DllMain which the user
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| 135 | # can override, but on older systems we have to supply one (in ltdll.c)
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| 136 | if test "x$lt_cv_need_dllmain" = "xyes"; then
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| 137 | ltdll_obj='$output_objdir/$soname-ltdll.'"$objext "
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| 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~
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| 139 | test -f $output_objdir/$soname-ltdll.$objext || (cd $output_objdir && $CC -c $soname-ltdll.c)~'
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| 140 | else
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| 141 | ltdll_obj=
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| 142 | ltdll_cmds=
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| 143 | fi
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| 144 |
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| 145 | # Extract the symbol export list from an `--export-all' def file,
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| 146 | # then regenerate the def file from the symbol export list, so that
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| 147 | # the compiled dll only exports the symbol export list.
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| 148 | # Be careful not to strip the DATA tag left be newer dlltools.
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| 149 | export_symbols_cmds="$ltdll_cmds"'
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| 150 | $DLLTOOL --export-all --exclude-symbols '$dll_exclude_symbols' --output-def $output_objdir/$soname-def '$ltdll_obj'$libobjs $convenience~
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| 151 | sed -e "1,/EXPORTS/d" -e "s/ @ [0-9]*//" -e "s/ *;.*$//" < $output_objdir/$soname-def > $export_symbols'
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| 152 |
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| 153 | # If the export-symbols file already is a .def file (1st line
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| 154 | # is EXPORTS), use it as is.
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| 155 | # If DATA tags from a recent dlltool are present, honour them!
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| 156 | archive_expsym_cmds='if test "x`head -1 $export_symbols`" = xEXPORTS; then
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| 157 | cp $export_symbols $output_objdir/$soname-def;
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| 158 | else
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| 159 | echo EXPORTS > $output_objdir/$soname-def;
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| 160 | _lt_hint=1;
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| 161 | cat $export_symbols | while read symbol; do
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| 162 | set dummy \$symbol;
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| 163 | case \[$]# in
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| 164 | 2) echo " \[$]2 @ \$_lt_hint ; " >> $output_objdir/$soname-def;;
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| 165 | *) echo " \[$]2 @ \$_lt_hint \[$]3 ; " >> $output_objdir/$soname-def;;
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| 166 | esac;
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| 167 | _lt_hint=`expr 1 + \$_lt_hint`;
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| 168 | done;
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| 169 | fi~
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| 170 | '"$ltdll_cmds"'
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| 171 | $CC -Wl,--base-file,$output_objdir/$soname-base '$lt_cv_cc_dll_switch' -Wl,-e,'$dll_entry' -o $output_objdir/$soname '$ltdll_obj'$libobjs $deplibs $compiler_flags~
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| 172 | $DLLTOOL --as=$AS --dllname $soname --exclude-symbols '$dll_exclude_symbols' --def $output_objdir/$soname-def --base-file $output_objdir/$soname-base --output-exp $output_objdir/$soname-exp~
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| 173 | $CC -Wl,--base-file,$output_objdir/$soname-base $output_objdir/$soname-exp '$lt_cv_cc_dll_switch' -Wl,-e,'$dll_entry' -o $output_objdir/$soname '$ltdll_obj'$libobjs $deplibs $compiler_flags~
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| 174 | $DLLTOOL --as=$AS --dllname $soname --exclude-symbols '$dll_exclude_symbols' --def $output_objdir/$soname-def --base-file $output_objdir/$soname-base --output-exp $output_objdir/$soname-exp --output-lib $output_objdir/$libname.dll.a~
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| 175 | $CC $output_objdir/$soname-exp '$lt_cv_cc_dll_switch' -Wl,-e,'$dll_entry' -o $output_objdir/$soname '$ltdll_obj'$libobjs $deplibs $compiler_flags'
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| 176 | ;;
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| 177 |
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| 178 | darwin* | rhapsody*)
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| 179 | allow_undefined_flag='-undefined suppress'
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| 180 | archive_cmds='$CC `test .$module = .yes && echo -bundle || echo -dynamiclib` $allow_undefined_flag -o $lib $libobjs $deplibs $linkopts -install_name $rpath/$soname `test -n "$verstring" -a x$verstring != x0.0 && echo $verstring`'
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| 181 | # We need to add '_' to the symbols in $export_symbols first
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| 182 | #archive_expsym_cmds="$archive_cmds"' && strip -s $export_symbols'
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| 183 | hardcode_direct=yes
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| 184 | hardcode_shlibpath_var=no
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| 185 | whole_archive_flag_spec='-all_load $convenience'
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| 186 | ;;
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| 187 |
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| 188 | netbsd*)
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| 189 | if echo __ELF__ | $CC -E - | grep __ELF__ >/dev/null; then
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| 190 | archive_cmds='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib'
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| 191 | wlarc=
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| 192 | else
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| 193 | archive_cmds='$CC -shared -nodefaultlibs $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
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| 194 | archive_expsym_cmds='$CC -shared -nodefaultlibs $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
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| 195 | fi
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| 196 | ;;
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| 197 |
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| 198 | solaris* | sysv5*)
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| 199 | if $LD -v 2>&1 | egrep 'BFD 2\.8' > /dev/null; then
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| 200 | ld_shlibs=no
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| 201 | cat <<EOF 1>&2
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| 202 |
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| 203 | *** Warning: The releases 2.8.* of the GNU linker cannot reliably
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| 204 | *** create shared libraries on Solaris systems. Therefore, libtool
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| 205 | *** is disabling shared libraries support. We urge you to upgrade GNU
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| 206 | *** binutils to release 2.9.1 or newer. Another option is to modify
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| 207 | *** your PATH or compiler configuration so that the native linker is
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| 208 | *** used, and then restart.
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| 209 |
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| 210 | EOF
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