X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=ltcf-cxx.sh;h=fa8dbd08d6337535eb6f245b2da43ee9a332f8cd;hb=9e5a05682cf4ef027e1a56c1a896967390644e0d;hp=d7cdf6909b0b0cc355f03b7393fa34132357d662;hpb=469b781cfb777bb37eeefbc2614adb35b4d3c199;p=deliverable%2Fbinutils-gdb.git diff --git a/ltcf-cxx.sh b/ltcf-cxx.sh index d7cdf6909b..fa8dbd08d6 100644 --- a/ltcf-cxx.sh +++ b/ltcf-cxx.sh @@ -2,7 +2,7 @@ # ltcf-cxx.sh - Create a C++ compiler specific configuration # -# Copyright (C) 1996-1999, 2000, 2001 Free Software Foundation, Inc. +# Copyright (C) 1996-1999, 2000, 2001, 2003 Free Software Foundation, Inc. # Originally by Gordon Matzigkeit , 1996 # # Original C++ support by:Gary V. Vaughan @@ -22,7 +22,7 @@ # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software -# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. # # As a special exception to the GNU General Public License, if you # distribute this file as part of a program that contains a @@ -68,11 +68,16 @@ if { ac_try='${CC-c++} -E conftest.$ac_ext'; { (eval echo \"$ac_try\") 1>&5; (ev # Set up default GNU C++ configuration # Check if GNU C++ uses GNU ld as the underlying linker, since the - # archiving commands below assume that GNU ld is being used. - if eval "`$CC -print-prog-name=ld` --version 2>&1" | \ - egrep 'GNU ld' > /dev/null; then - with_gnu_ld=yes - + # archiving commands below assume that GNU ld is being used. The + # assumption here is that the linker is going to be the same as that + # used by the C compiler. For the purposes of GCC, this is ok, but + # if someone uses g++ along with a non-GNU C compiler that doesn't + # use GNU ld, we may lose. This is ok for the toolchain tree, since + # the only users of ltcf-cxx.sh are libstdc++-v3 and libjava, + # anyway, and those use both gcc and g++, so the settings are bound + # to be the same. + + if test "$with_gnu_ld" = yes; then archive_cmds='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib' archive_expsym_cmds='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib' @@ -92,7 +97,6 @@ if { ac_try='${CC-c++} -E conftest.$ac_ext'; { (eval echo \"$ac_try\") 1>&5; (ev whole_archive_flag_spec= fi else - with_gnu_ld=no wlarc= # A generic and very simple default shared library creation @@ -106,11 +110,10 @@ if { ac_try='${CC-c++} -E conftest.$ac_ext'; { (eval echo \"$ac_try\") 1>&5; (ev # Commands to make compiler produce verbose output that lists # what "hidden" libraries, object files and flags are used when # linking a shared library. - output_verbose_link_cmds='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"' + output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"' else with_gcc=no - with_gnu_ld=no wlarc= fi @@ -165,8 +168,10 @@ case $host_os in # On IA64, the linker does run time linking by default, so we don't # have to do anything special. aix_use_runtimelinking=no - exp_sym_flag='-Bexport' - no_entry_flag="" + if test $with_gnu_ld = no; then + exp_sym_flag='-Bexport' + no_entry_flag="" + fi else # Test if we are trying to use run time linking, or normal AIX style linking. # If -brtl is somewhere in LDFLAGS, we need to do run time linking. @@ -189,15 +194,17 @@ case $host_os in archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs $compiler_flags ${allow_undefined_flag} '"\${wl}$no_entry_flag \${wl}-brtl \${wl}$exp_sym_flag:\$export_symbols" else if test "$host_cpu" = ia64; then - hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib' - allow_undefined_flag="-z nodefs" - archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$no_entry_flag \${wl}$exp_sym_flag:\$export_symbols" + if test $with_gnu_ld = no; then + hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib' + allow_undefined_flag="-z nodefs" + archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$no_entry_flag \${wl}$exp_sym_flag:\$export_symbols" + fi else hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:/usr/lib:/lib' # Warning - without using the other run time loading flags, -berok will # link without error, but may produce a broken library. - no_undefined_flag='${wl}-bnoerok' - allow_undefined_flag='${wl}-berok" + no_undefined_flag=' ${wl}-bnoerok' + allow_undefined_flag=' ${wl}-berok' # -bexpall does not export symbols beginning with underscore (_) always_export_symbols=yes # Exported symbols can be pulled into shared objects from archives @@ -233,18 +240,32 @@ case $host_os in ;; esac ;; - freebsd*) - # FreeBSD uses GNU C++ and GNU ld - # FIXME: insert proper C++ library support + freebsd[12]*) + # C++ shared libraries reported to be fairly broken before switch to ELF ld_shlibs=no ;; + freebsd* | kfreebsd*-gnu) + # FreeBSD 3 and later use GNU C++ and GNU ld with standard ELF + # conventions + ld_shlibs=yes + ;; + gnu*) + ;; hpux*) - hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir' - hardcode_libdir_separator=: - hardcode_direct=yes + if test $with_gnu_ld = no; then + case "$host_cpu" in + ia64*) + hardcode_libdir_flag_spec='-L$libdir' + hardcode_shlibpath_var=no ;; + *) + hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir' ;; + esac + hardcode_direct=yes + hardcode_libdir_separator=: + export_dynamic_flag_spec='${wl}-E' + fi hardcode_minus_L=yes # Not in the search PATH, but as the default # location of the library. - export_dynamic_flag_spec='${wl}-E' case $cc_basename in CC) @@ -264,14 +285,23 @@ case $host_os in # explicitly linking system object files so we need to strip them # from the output so that they don't get included in the library # dependencies. - output_verbose_link_cmds='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | egrep "\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list' + output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | egrep "\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list' ;; *) if test $with_gcc = yes; then - case "$host_os" in - hpux9*) archive_cmds='$rm $output_objdir/$soname~$CC -shared -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib' ;; - *) archive_cmds='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' ;; - esac + if test $with_gnu_ld = no; then + case "$host_os" in + hpux9*) archive_cmds='$rm $output_objdir/$soname~$CC -shared -nostdlib -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib' ;; + *) + case "$host_cpu" in + ia64*) + archive_cmds='$LD -b +h $soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags' ;; + *) + archive_cmds='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' ;; + esac + ;; + esac + fi else # FIXME: insert proper C++ library support ld_shlibs=no @@ -294,9 +324,9 @@ case $host_os in *) if test "$with_gcc" = yes; then if test "$with_gnu_ld" = no; then - archive_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && echo ${wl}-set_version ${wl}$verstring` ${wl}-update_registry ${wl}${objdir}/so_locations -o $lib' + archive_cmds='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && echo ${wl}-set_version ${wl}$verstring` ${wl}-update_registry ${wl}${objdir}/so_locations -o $lib' else - archive_cmds='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $linker_flags -soname $soname `test -n "$verstring" && echo -set_version $verstring` -o $lib' + archive_cmds='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -soname $soname `test -n "$verstring" && echo -set_version $verstring` -o $lib' fi fi hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir' @@ -324,7 +354,7 @@ case $host_os in # explicitly linking system object files so we need to strip them # from the output so that they don't get included in the library # dependencies. - output_verbose_link_cmds='templist=`$CC $CFLAGS -v conftest.$objext -o libconftest.so 2>&1 | egrep "ld"`; rm -f libconftest.so; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list' + output_verbose_link_cmd='templist=`$CC $CFLAGS -v conftest.$objext -o libconftest.so 2>&1 | egrep "ld"`; rm -f libconftest.so; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list' hardcode_libdir_flag_spec='${wl}--rpath,$libdir' export_dynamic_flag_spec='${wl}--export-dynamic' @@ -350,7 +380,7 @@ case $host_os in # explicitly linking system object files so we need to strip them # from the output so that they don't get included in the library # dependencies. - output_verbose_link_cmds='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | grep "ld"`; templist=`echo $templist | sed "s/\(^.*ld.*\)\( .*ld .*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list' + output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | grep "ld"`; templist=`echo $templist | sed "s/\(^.*ld.*\)\( .*ld .*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list' ;; esac ;; @@ -374,23 +404,10 @@ case $host_os in ;; esac ;; - netbsd*) + netbsd* | knetbsd*-gnu) # NetBSD uses g++ - do we need to do anything? ;; osf3*) - if test "$with_gcc" = yes && test "$with_gnu_ld" = no; then - allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*' - archive_cmds='$CC -shared -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && echo ${wl}-set_version ${wl}$verstring` ${wl}-update_registry ${wl}${objdir}/so_locations -o $lib' - - hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir' - hardcode_libdir_separator=: - - # Commands to make compiler produce verbose output that lists - # what "hidden" libraries, object files and flags are used when - # linking a shared library. - output_verbose_link_cmds='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"' - fi - case $cc_basename in KCC) # Kuck and Associates, Inc. (KAI) C++ Compiler @@ -428,28 +445,28 @@ case $host_os in # explicitly linking system object files so we need to strip them # from the output so that they don't get included in the library # dependencies. - output_verbose_link_cmds='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | grep "ld" | grep -v "ld:"`; templist=`echo $templist | sed "s/\(^.*ld.*\)\( .*ld.*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list' + output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | grep "ld" | grep -v "ld:"`; templist=`echo $templist | sed "s/\(^.*ld.*\)\( .*ld.*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list' ;; *) - # FIXME: insert proper C++ library support - ld_shlibs=no + if test "$with_gcc" = yes && test "$with_gnu_ld" = no; then + allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*' + archive_cmds='$CC -shared -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && echo ${wl}-set_version ${wl}$verstring` ${wl}-update_registry ${wl}${objdir}/so_locations -o $lib' + + hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir' + hardcode_libdir_separator=: + + # Commands to make compiler produce verbose output that lists + # what "hidden" libraries, object files and flags are used when + # linking a shared library. + output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"' + else + # FIXME: insert proper C++ library support + ld_shlibs=no + fi ;; esac ;; osf4* | osf5*) - if test "$with_gcc" = yes && test "$with_gnu_ld" = no; then - allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*' - archive_cmds='$CC -shared -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $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 $lib' - - hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir' - hardcode_libdir_separator=: - - # Commands to make compiler produce verbose output that lists - # what "hidden" libraries, object files and flags are used when - # linking a shared library. - output_verbose_link_cmds='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"' - fi - case $cc_basename in KCC) # Kuck and Associates, Inc. (KAI) C++ Compiler @@ -474,6 +491,10 @@ case $host_os in cxx) allow_undefined_flag=' -expect_unresolved \*' archive_cmds='$CC -shared${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -msym -soname $soname `test -n "$verstring" && echo -set_version $verstring` -update_registry ${objdir}/so_locations -o $lib' + archive_expsym_cmds='for i in `cat $export_symbols`; do printf "-exported_symbol " >> $lib.exp; echo "\$i" >> $lib.exp; done~ + echo "-hidden">> $lib.exp~ + $CC -shared$allow_undefined_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -msym -soname $soname -Wl,-input -Wl,$lib.exp `test -n "$verstring" && echo -set_version $verstring` -update_registry $objdir/so_locations -o $lib~ + $rm $lib.exp' hardcode_libdir_flag_spec='-rpath $libdir' hardcode_libdir_separator=: @@ -486,11 +507,24 @@ case $host_os in # explicitly linking system object files so we need to strip them # from the output so that they don't get included in the library # dependencies. - output_verbose_link_cmds='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | grep "ld" | grep -v "ld:"`; templist=`echo $templist | sed "s/\(^.*ld.*\)\( .*ld.*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list' + output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | grep "ld" | grep -v "ld:"`; templist=`echo $templist | sed "s/\(^.*ld.*\)\( .*ld.*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list' ;; *) - # FIXME: insert proper C++ library support - ld_shlibs=no + if test "$with_gcc" = yes && test "$with_gnu_ld" = no; then + allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*' + archive_cmds='$CC -shared -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $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 $lib' + + hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir' + hardcode_libdir_separator=: + + # Commands to make compiler produce verbose output that lists + # what "hidden" libraries, object files and flags are used when + # linking a shared library. + output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep "\-L"' + else + # FIXME: insert proper C++ library support + ld_shlibs=no + fi ;; esac ;; @@ -532,7 +566,7 @@ case $host_os in case $cc_basename in CC) # Sun C++ 4.2, 5.x and Centerline C++ - no_undefined_flag=' -ztext' + no_undefined_flag=' -zdefs' archive_cmds='$CC -G${allow_undefined_flag} -nolib -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags' archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~ $CC -G${allow_undefined_flag} -nolib ${wl}-M ${wl}$lib.exp -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$rm $lib.exp' @@ -559,7 +593,7 @@ case $host_os in # explicitly linking system object files so we need to strip them # from the output so that they don't get included in the library # dependencies. - output_verbose_link_cmds='templist=`$CC -G $CFLAGS -v conftest.$objext 2>&1 | egrep "\-R|\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list' + output_verbose_link_cmd='templist=`$CC -G $CFLAGS -v conftest.$objext 2>&1 | egrep "\-R|\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; echo $list' # Archives containing C++ object files must be created using # "CC -xar", where "CC" is the Sun C++ compiler. This is @@ -577,26 +611,27 @@ case $host_os in *) # GNU C++ compiler with Solaris linker if test "$with_gcc" = yes && test "$with_gnu_ld" = no; then + no_undefined_flag=' ${wl}-z ${wl}defs' if $CC --version | egrep -v '^2\.7' > /dev/null; then - archive_cmds='$CC -shared -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $linker_flags ${wl}-h $wl$soname -o $lib' + archive_cmds='$CC -shared -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib' archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~ - $CC -shared -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags~$rm $lib.exp' + $CC -shared -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$rm $lib.exp' # Commands to make compiler produce verbose output that lists # what "hidden" libraries, object files and flags are used when # linking a shared library. - output_verbose_link_cmds="$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep \"\-L\"" + output_verbose_link_cmd="$CC -shared $CFLAGS -v conftest.$objext 2>&1 | egrep \"\-L\"" else # g++ 2.7 appears to require `-G' NOT `-shared' on this # platform. - archive_cmds='$CC -G -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $linker_flags ${wl}-h $wl$soname -o $lib' + archive_cmds='$CC -G -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib' archive_expsym_cmds='$echo "{ global:" > $lib.exp~cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $lib.exp~$echo "local: *; };" >> $lib.exp~ - $CC -G -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags~$rm $lib.exp' + $CC -G -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$rm $lib.exp' # Commands to make compiler produce verbose output that lists # what "hidden" libraries, object files and flags are used when # linking a shared library. - output_verbose_link_cmds="$CC -G $CFLAGS -v conftest.$objext 2>&1 | egrep \"\-L\"" + output_verbose_link_cmd="$CC -G $CFLAGS -v conftest.$objext 2>&1 | egrep \"\-L\"" fi hardcode_libdir_flag_spec='${wl}-R $wl$libdir' @@ -617,6 +652,9 @@ case $host_os in ;; esac ;; + tpf*) + ld_shlibs=yes + ;; unixware*) # FIXME: insert proper C++ library support ld_shlibs=no @@ -651,9 +689,6 @@ if test "$with_gcc" = yes; then ac_cv_prog_cc_static='-static' case $host_os in - beos* | irix5* | irix6* | osf3* | osf4* | osf5*) - # PIC is the default for these OSes. - ;; aix*) # All AIX code is PIC. if test "$host_cpu" = ia64; then @@ -663,17 +698,29 @@ if test "$with_gcc" = yes; then lt_cv_prog_cc_static='-bnso -bI:/lib/syscalls.exp' fi ;; - cygwin* | mingw* | os2*) - # This hack is so that the source file can tell whether it is being - # built for inclusion in a dll (and should export symbols for example). - ac_cv_prog_cc_pic='-DDLL_EXPORT' - ;; amigaos*) # FIXME: we need at least 68020 code to build shared libraries, but # adding the `-m68020' flag to GCC prevents building anything better, # like `-m68040'. ac_cv_prog_cc_pic='-m68020 -resident32 -malways-restore-a4' ;; + beos* | irix5* | irix6* | osf3* | osf4* | osf5*) + # PIC is the default for these OSes. + ;; + cygwin* | mingw* | os2*) + # This hack is so that the source file can tell whether it is being + # built for inclusion in a dll (and should export symbols for example). + ac_cv_prog_cc_pic='-DDLL_EXPORT' + ;; + darwin* | rhapsody*) + # PIC is the default on this platform + # Common symbols not allowed in MH_DYLIB files + lt_cv_prog_cc_pic='-fno-common' + ;; + *djgpp*) + # DJGPP does not support shared libraries at all + ac_cv_prog_cc_pic= + ;; sysv4*MP*) if test -d /usr/nec; then ac_cv_prog_cc_pic=-Kconform_pic @@ -715,9 +762,11 @@ else ;; esac ;; - freebsd*) + freebsd* | kfreebsd*-gnu) # FreeBSD uses GNU C++ ;; + gnu*) + ;; hpux9* | hpux10* | hpux11*) case $cc_basename in CC) @@ -860,7 +909,17 @@ else ;; esac fi -ac_cv_prog_cc_pic="$ac_cv_prog_cc_pic -DPIC" + +case "$host_os" in + # Platforms which do not suport PIC and -DPIC is meaningless + # on them: + *djgpp*) + ac_cv_prog_cc_pic= + ;; + *) + ac_cv_prog_cc_pic="$ac_cv_prog_cc_pic -DPIC" + ;; +esac # Figure out "hidden" C++ library dependencies from verbose @@ -884,7 +943,7 @@ if (eval $ac_compile) 2>&5; then # the conftest object file. pre_test_object_deps_done=no - for p in `eval $output_verbose_link_cmds`; do + for p in `eval $output_verbose_link_cmd`; do case $p in