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https://https.git.savannah.gnu.org/git/libtool.git
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libtool: Add configuration options for CXX linking
Add configuration options to choose whether to use '-nostdlib' when linking C++ shared libraries and modules. * m4/libtool.m4: Replace '-nostdlib' with variable '$stdlibflag' and set '$output_verbose_link_cmd' to be empty when enabling standard library linking for C++ modules. * m4/ltoptions.m4: Add new configuration options, --enable-cxx-stdlib and --disable-cxx-stdlib, and add LT_INIT options, cxx-stdlib and no-cxx-stdlib. * doc/libtool.texi: Update for new configuration options. * NEWS: Update.
This commit is contained in:
Ileana Dumitrescu
parent
7945cf75f8
commit
9bc7536bd8
5
NEWS
5
NEWS
@ -12,6 +12,11 @@ NEWS - list of user-visible changes between releases of GNU Libtool
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- Increase 5 digit limit on revision value for libraries to 19 digits,
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which is referencing Unix epoch time in nanoseconds.
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- Add configuration options to choose whether to use '-nostdlib' to let
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the compiler frontend decide what standard libraries to link when
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building C++ shared libraries and modules, --enable-cxx-stdlib and
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--disable-cxx-stdlib.
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** Bug fixes:
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- Fix wrongly deduplicated compiler dependencies on linux.
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@ -2378,6 +2378,19 @@ Change the default behaviour of @command{libtool} to try to use only
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non-PIC objects. The user may still override this default by
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specifying @option{--enable-pic} to @command{configure}.
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@item cxx-stdlib
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Change the default behaviour for @command{libtool} to let the compiler
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frontend decide what standard libraries to link when building C++ shared
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libraries and modules.
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The user may still override this default by specifying
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@option{--disable-cxx-stdlib} to @command{configure}.
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@item no-cxx-stdlib
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Change the default behaviour for @command{libtool} to not link
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standard libraries when building C++ shared libraries and modules.
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The user may still override this default by specifying
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@option{--enable-cxx-stdlib} to @command{configure}.
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@end table
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@end defmac
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48
m4/libtool.m4
vendored
48
m4/libtool.m4
vendored
@ -1201,8 +1201,8 @@ m4_defun([_LT_DARWIN_LINKER_FEATURES],
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_LT_TAGVAR(module_expsym_cmds, $1)="$SED -e 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags$_lt_dar_export_syms$_lt_dsymutil"
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m4_if([$1], [CXX],
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[ if test yes = "$_lt_dar_needs_single_mod" -a yes != "$lt_cv_apple_cc_single_mod"; then
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_LT_TAGVAR(archive_cmds, $1)="\$CC -r -keep_private_externs -nostdlib -o \$lib-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$lib-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring$_lt_dsymutil"
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_LT_TAGVAR(archive_expsym_cmds, $1)="$SED 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC -r -keep_private_externs -nostdlib -o \$lib-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$lib-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring$_lt_dar_export_syms$_lt_dsymutil"
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_LT_TAGVAR(archive_cmds, $1)="\$CC -r -keep_private_externs $stdlibflag -o \$lib-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$lib-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring$_lt_dsymutil"
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_LT_TAGVAR(archive_expsym_cmds, $1)="$SED 's|^|_|' < \$export_symbols > \$output_objdir/\$libname-symbols.expsym~\$CC -r -keep_private_externs $stdlibflag -o \$lib-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$lib-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring$_lt_dar_export_syms$_lt_dsymutil"
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fi
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],[])
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else
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@ -3016,6 +3016,8 @@ netbsdelf*-gnu)
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shlibpath_overrides_runpath=no
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hardcode_into_libs=yes
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dynamic_linker='NetBSD ld.elf_so'
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enable_cxx_stdlib=yes
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stdlibflag=
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;;
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netbsd*)
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@ -3034,6 +3036,8 @@ netbsd*)
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shlibpath_var=LD_LIBRARY_PATH
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shlibpath_overrides_runpath=yes
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hardcode_into_libs=yes
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enable_cxx_stdlib=yes
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stdlibflag=
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;;
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*-mlibc)
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@ -3541,7 +3545,7 @@ case $host_os in
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;;
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darwin*)
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if test yes = "$GCC"; then
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reload_cmds='$LTCC $LTCFLAGS -nostdlib $wl-r -o $output$reload_objs'
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reload_cmds='$LTCC $LTCFLAGS $stdlibflag $wl-r -o $output$reload_objs'
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else
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reload_cmds='$LD$reload_flag -o $output$reload_objs'
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fi
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@ -6596,8 +6600,8 @@ if test yes != "$_lt_caught_CXX_error"; then
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# Check if GNU C++ uses GNU ld as the underlying linker, since the
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# archiving commands below assume that GNU ld is being used.
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if test yes = "$with_gnu_ld"; then
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_LT_TAGVAR(archive_cmds, $1)='$CC $pic_flag -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname -o $lib'
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_LT_TAGVAR(archive_expsym_cmds, $1)='$CC $pic_flag -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib'
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_LT_TAGVAR(archive_cmds, $1)='$CC $pic_flag -shared $stdlibflag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname -o $lib'
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_LT_TAGVAR(archive_expsym_cmds, $1)='$CC $pic_flag -shared $stdlibflag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname $wl-retain-symbols-file $wl$export_symbols -o $lib'
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_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-rpath $wl$libdir'
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_LT_TAGVAR(export_dynamic_flag_spec, $1)='$wl--export-dynamic'
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@ -6622,7 +6626,7 @@ if test yes != "$_lt_caught_CXX_error"; then
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# linker, instead of GNU ld. If possible, this setting should
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# overridden to take advantage of the native linker features on
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# the platform it is being used on.
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_LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
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_LT_TAGVAR(archive_cmds, $1)='$CC -shared $stdlibflag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
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fi
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# Commands to make compiler produce verbose output that lists
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@ -6893,7 +6897,7 @@ if test yes != "$_lt_caught_CXX_error"; then
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_LT_TAGVAR(file_list_spec, $1)='@'
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if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
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_LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname $wl--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
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_LT_TAGVAR(archive_cmds, $1)='$CC -shared $stdlibflag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname $wl--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
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# If the export-symbols file already is a .def file, use it as
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# is; otherwise, prepend EXPORTS...
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_LT_TAGVAR(archive_expsym_cmds, $1)='if _LT_DLL_DEF_P([$export_symbols]); then
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@ -6902,7 +6906,7 @@ if test yes != "$_lt_caught_CXX_error"; then
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echo EXPORTS > $output_objdir/$soname.def;
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cat $export_symbols >> $output_objdir/$soname.def;
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fi~
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$CC -shared -nostdlib $output_objdir/$soname.def $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname $wl--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
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$CC -shared $stdlibflag $output_objdir/$soname.def $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname $wl--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
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else
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_LT_TAGVAR(ld_shlibs, $1)=no
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fi
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@ -7009,7 +7013,7 @@ if test yes != "$_lt_caught_CXX_error"; then
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;;
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*)
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if test yes = "$GXX"; then
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_LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared -nostdlib $pic_flag $wl+b $wl$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test "x$output_objdir/$soname" = "x$lib" || mv $output_objdir/$soname $lib'
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_LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared $stdlibflag $pic_flag $wl+b $wl$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test "x$output_objdir/$soname" = "x$lib" || mv $output_objdir/$soname $lib'
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else
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# FIXME: insert proper C++ library support
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_LT_TAGVAR(ld_shlibs, $1)=no
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@ -7077,13 +7081,13 @@ if test yes != "$_lt_caught_CXX_error"; then
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if test no = "$with_gnu_ld"; then
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case $host_cpu in
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hppa*64*)
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_LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC $wl+h $wl$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
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_LT_TAGVAR(archive_cmds, $1)='$CC -shared $stdlibflag -fPIC $wl+h $wl$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
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;;
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ia64*)
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_LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $pic_flag $wl+h $wl$soname $wl+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
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_LT_TAGVAR(archive_cmds, $1)='$CC -shared $stdlibflag $pic_flag $wl+h $wl$soname $wl+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
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;;
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*)
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_LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $pic_flag $wl+h $wl$soname $wl+b $wl$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
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_LT_TAGVAR(archive_cmds, $1)='$CC -shared $stdlibflag $pic_flag $wl+h $wl$soname $wl+b $wl$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
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;;
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esac
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fi
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@ -7124,9 +7128,9 @@ if test yes != "$_lt_caught_CXX_error"; then
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*)
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if test yes = "$GXX"; then
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if test no = "$with_gnu_ld"; then
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_LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations -o $lib'
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_LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $stdlibflag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations -o $lib'
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else
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_LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` -o $lib'
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_LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $stdlibflag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` -o $lib'
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fi
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fi
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_LT_TAGVAR(link_all_deplibs, $1)=yes
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@ -7402,10 +7406,10 @@ if test yes != "$_lt_caught_CXX_error"; then
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_LT_TAGVAR(allow_undefined_flag, $1)=' $wl-expect_unresolved $wl\*'
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case $host in
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osf3*)
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_LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $allow_undefined_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations -o $lib'
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_LT_TAGVAR(archive_cmds, $1)='$CC -shared $stdlibflag $allow_undefined_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations -o $lib'
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;;
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*)
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_LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib $allow_undefined_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-msym $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations -o $lib'
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_LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $stdlibflag $allow_undefined_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-msym $wl-soname $wl$soname `test -n "$verstring" && func_echo_all "$wl-set_version $wl$verstring"` $wl-update_registry $wl$output_objdir/so_locations -o $lib'
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;;
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esac
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@ -7495,9 +7499,9 @@ if test yes != "$_lt_caught_CXX_error"; then
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if test yes,no = "$GXX,$with_gnu_ld"; then
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_LT_TAGVAR(no_undefined_flag, $1)=' $wl-z ${wl}defs'
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if $CC --version | $GREP -v '^2\.7' > /dev/null; then
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_LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-h $wl$soname -o $lib'
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_LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $stdlibflag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-h $wl$soname -o $lib'
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_LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
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$CC -shared $pic_flag -nostdlib $wl-M $wl$lib.exp $wl-h $wl$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
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$CC -shared $pic_flag $stdlibflag $wl-M $wl$lib.exp $wl-h $wl$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
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# Commands to make compiler produce verbose output that lists
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# what "hidden" libraries, object files and flags are used when
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@ -7506,9 +7510,9 @@ if test yes != "$_lt_caught_CXX_error"; then
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else
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# g++ 2.7 appears to require '-G' NOT '-shared' on this
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# platform.
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_LT_TAGVAR(archive_cmds, $1)='$CC -G -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-h $wl$soname -o $lib'
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_LT_TAGVAR(archive_cmds, $1)='$CC -G $stdlibflag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-h $wl$soname -o $lib'
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_LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
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$CC -G -nostdlib $wl-M $wl$lib.exp $wl-h $wl$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
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$CC -G $stdlibflag $wl-M $wl$lib.exp $wl-h $wl$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
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# Commands to make compiler produce verbose output that lists
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# what "hidden" libraries, object files and flags are used when
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@ -7747,6 +7751,10 @@ if AC_TRY_EVAL(ac_compile); then
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# the conftest object file.
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pre_test_object_deps_done=no
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if test yes = "$enable_cxx_stdlib"; then
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output_verbose_link_cmd=
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fi
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for p in `eval "$output_verbose_link_cmd"`; do
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case $prev$p in
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44
m4/ltoptions.m4
vendored
44
m4/ltoptions.m4
vendored
@ -80,6 +80,7 @@ m4_if([$1],[LT_INIT],[
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_LT_UNLESS_OPTIONS([LT_INIT], [shared disable-shared], [_LT_ENABLE_SHARED])
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_LT_UNLESS_OPTIONS([LT_INIT], [static disable-static], [_LT_ENABLE_STATIC])
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_LT_UNLESS_OPTIONS([LT_INIT], [pic-only no-pic], [_LT_WITH_PIC])
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_LT_UNLESS_OPTIONS([LT_INIT], [cxx-stdlib no-cxx-stdlib], [_LT_ENABLE_CXX_STDLIB])
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_LT_UNLESS_OPTIONS([LT_INIT], [fast-install disable-fast-install],
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[_LT_ENABLE_FAST_INSTALL])
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_LT_UNLESS_OPTIONS([LT_INIT], [aix-soname=aix aix-soname=both aix-soname=svr4],
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@ -456,6 +457,49 @@ put the 'pic-only' option into LT_INIT's first parameter.])
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dnl aclocal-1.4 backwards compatibility:
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dnl AC_DEFUN([AC_LIBTOOL_PICMODE], [])
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|
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# _LT_ENABLE_CXX_STDLIB([MODE])
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# --------------------
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# implement the --enable-cxx-stdlib flag, and support the 'cxx-stdlib' and 'no-cxx-stdlib'
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# LT_INIT options.
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# MODE is either 'yes' or 'no'. If omitted, it defaults to 'no'.
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m4_define([_LT_ENABLE_CXX_STDLIB],
|
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[m4_define([_LT_ENABLE_CXX_STDLIB_DEFAULT], [m4_if($1, yes, yes, no)])dnl
|
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stdlibflag=-nostdlib
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AC_ARG_ENABLE([cxx-stdlib],
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[AS_HELP_STRING([--enable-cxx-stdlib@<:@=PKGS@:>@],
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[let the compiler frontend decide what standard libraries to link when building C++ shared libraries and modules @<:@default=]_LT_ENABLE_CXX_STDLIB_DEFAULT[@:>@])],
|
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[p=${PACKAGE-default}
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case $enableval in
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yes) enable_cxx_stdlib=yes ;;
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no) enable_cxx_stdlib=no ;;
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*)
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enable_cxx_stdlib=no
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# Look at the argument we got. We use all the common list separators.
|
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lt_save_ifs=$IFS; IFS=$IFS$PATH_SEPARATOR,
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for pkg in $enableval; do
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IFS=$lt_save_ifs
|
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if test "X$pkg" = "X$p"; then
|
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enable_cxx_stdlib=yes
|
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fi
|
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done
|
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IFS=$lt_save_ifs
|
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;;
|
||||
esac],
|
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[enable_cxx_stdlib=]_LT_ENABLE_CXX_STDLIB_DEFAULT)
|
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|
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if test yes = "$enable_cxx_stdlib"; then
|
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stdlibflag=
|
||||
fi
|
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|
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_LT_DECL([], [enable_cxx_stdlib], [0], [Whether to let the compiler frontend decide what standard libraries to link when building C++ shared libraries and modules])dnl
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||||
_LT_DECL([], [stdlibflag], [0], [Flag used for specifying not to link standard libraries])dnl
|
||||
])# _LT_ENABLE_CXX_STDLIB
|
||||
|
||||
LT_OPTION_DEFINE([LT_INIT], [cxx-stdlib], [_LT_ENABLE_CXX_STDLIB([yes])])
|
||||
LT_OPTION_DEFINE([LT_INIT], [no-cxx-stdlib], [_LT_ENABLE_CXX_STDLIB([no])])
|
||||
|
||||
|
||||
## ----------------- ##
|
||||
## LTDL_INIT Options ##
|
||||
## ----------------- ##
|
||||
|
||||
Loading…
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Reference in New Issue
Block a user