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reviving libbusybox, adding CONFIG_INDIVIDUAL part 3
This commit is contained in:
Denis Vlasenko
parent
76a6b236a9
commit
def8898596
75
Config.in
75
Config.in
@ -292,31 +292,30 @@ config BUILD_LIBBUSYBOX
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binary serves no purpose (and increases the size). You should
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almost certainly say "no" to this right now.
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config FEATURE_FULL_LIBBUSYBOX
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bool "Feature-complete libbusybox"
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default n if !FEATURE_SHARED_BUSYBOX
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depends on BUILD_LIBBUSYBOX
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help
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Build a libbusybox with the complete feature-set, disregarding
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the actually selected config.
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Normally, libbusybox will only contain the features which are
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used by busybox itself. If you plan to write a separate
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standalone application which uses libbusybox say 'Y'.
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Note: libbusybox is GPL, not LGPL, and exports no stable API that
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might act as a copyright barrier. We can and will modify the
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exported function set between releases (even minor version number
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changes), and happily break out-of-tree features.
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Say 'N' if in doubt.
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### config FEATURE_FULL_LIBBUSYBOX
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### bool "Feature-complete libbusybox"
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### default n if !FEATURE_SHARED_BUSYBOX
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### depends on BUILD_LIBBUSYBOX
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### help
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### Build a libbusybox with the complete feature-set, disregarding
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### the actually selected config.
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###
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### Normally, libbusybox will only contain the features which are
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### used by busybox itself. If you plan to write a separate
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### standalone application which uses libbusybox say 'Y'.
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###
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### Note: libbusybox is GPL, not LGPL, and exports no stable API that
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### might act as a copyright barrier. We can and will modify the
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### exported function set between releases (even minor version number
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### changes), and happily break out-of-tree features.
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###
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### Say 'N' if in doubt.
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config FEATURE_SHARED_BUSYBOX
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bool "Use shared libbusybox for busybox"
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bool "Produce additional busybox binary linked against libbusybox"
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default y if BUILD_LIBBUSYBOX
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depends on !STATIC && BUILD_LIBBUSYBOX
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help
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Use libbusybox.so also for busybox itself.
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You need to have a working dynamic linker to use this variant.
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config LFS
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@ -331,24 +330,24 @@ config LFS
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cp, mount, tar, and many others. If you want to access files larger
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than 2 Gigabytes, enable this option. Otherwise, leave it set to 'N'.
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config BUILD_AT_ONCE
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bool "Compile all sources at once"
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default n
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help
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Normally each source-file is compiled with one invocation of
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the compiler.
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If you set this option, all sources are compiled at once.
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This gives the compiler more opportunities to optimize which can
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result in smaller and/or faster binaries.
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Setting this option will consume alot of memory, e.g. if you
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enable all applets with all features, gcc uses more than 300MB
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RAM during compilation of busybox.
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This option is most likely only beneficial for newer compilers
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such as gcc-4.1 and above.
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Say 'N' unless you know what you are doing.
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### config BUILD_AT_ONCE
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### bool "Compile all sources at once"
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### default n
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### help
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### Normally each source-file is compiled with one invocation of
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### the compiler.
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### If you set this option, all sources are compiled at once.
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### This gives the compiler more opportunities to optimize which can
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### result in smaller and/or faster binaries.
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###
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### Setting this option will consume alot of memory, e.g. if you
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### enable all applets with all features, gcc uses more than 300MB
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### RAM during compilation of busybox.
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###
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### This option is most likely only beneficial for newer compilers
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### such as gcc-4.1 and above.
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###
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### Say 'N' unless you know what you are doing.
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endmenu
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@ -3,6 +3,7 @@
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# ==========================================================================
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BB_VER = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
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export BB_VER
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SKIP_STRIP = n
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# -std=gnu99 needed for [U]LLONG_MAX on some systems
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@ -59,7 +60,7 @@ ifeq ($(CONFIG_STATIC),y)
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LDFLAGS += -static
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endif
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LDLIBS = m crypt
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LDLIBS += m crypt
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ifeq ($(CONFIG_PAM),y)
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LDLIBS += pam pam_misc
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@ -260,7 +260,7 @@ int udhcpc_main(int argc, char **argv)
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if (opt & OPT_t)
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client_config.retries = xatoi_u(str_t);
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if (opt & OPT_v) {
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printf("version %s\n", BB_VER);
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puts("version "BB_VER);
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return 0;
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}
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@ -283,7 +283,7 @@ int udhcpc_main(int argc, char **argv)
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/* if (!..) bb_perror_msg("cannot create pidfile %s", pidfile); */
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/* Goes to stdout and possibly syslog */
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bb_info_msg("%s (v%s) started", applet_name, BB_VER);
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bb_info_msg("%s (v"BB_VER") started", applet_name);
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/* if not set, and not suppressed, setup the default client ID */
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if (!client_config.clientid && !(opt & OPT_C)) {
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@ -62,7 +62,7 @@ int udhcpd_main(int argc, char **argv)
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write_pidfile(server_config.pidfile);
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/* if (!..) bb_perror_msg("cannot create pidfile %s", pidfile); */
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bb_info_msg("%s (v%s) started", applet_name, BB_VER);
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bb_info_msg("%s (v"BB_VER") started", applet_name);
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option = find_option(server_config.options, DHCP_LEASE_TIME);
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server_config.lease = LEASE_TIME;
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@ -101,35 +101,50 @@ else
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>/dev/null
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fi
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mkdir 0lib 2>/dev/null
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test -d 0lib || exit 1
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ln -s libbusybox.so.1.8.0 0lib/libbusybox.so 2>/dev/null
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. .config
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EXE="0lib/libbusybox.so.1.8.0"
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try $CC $LDFLAGS \
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sharedlib_dir="0_lib"
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if test "$CONFIG_BUILD_LIBBUSYBOX" = y; then
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mkdir "$sharedlib_dir" 2>/dev/null
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test -d "$sharedlib_dir" || {
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echo "Cannot make directory $sharedlib_dir"
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exit 1
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}
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ln -s "libbusybox.so.$BB_VER" "$sharedlib_dir"/libbusybox.so 2>/dev/null
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EXE="$sharedlib_dir/libbusybox.so.${BB_VER}_unstripped"
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try $CC $LDFLAGS \
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-o $EXE -Wl,-Map -Wl,$EXE.map \
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-shared -fPIC -Wl,--enable-new-dtags \
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-Wl,--start-group -Wl,--whole-archive $A_FILES -Wl,--no-whole-archive -Wl,--end-group \
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$l_list -Wl,--verbose \
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-Wl,-soname="libbusybox.so.1.8.0" \
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-Wl,-soname="libbusybox.so.$BB_VER" \
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-Wl,-z,combreloc \
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>/dev/null \
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echo "Linking $EXE failed"
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exit 1
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}
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strip -s --remove-section=.note --remove-section=.comment $EXE
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|| {
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echo "Linking $EXE failed"
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cat $EXE.out
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exit 1
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}
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strip -s --remove-section=.note --remove-section=.comment $EXE -o "$sharedlib_dir/libbusybox.so.$BB_VER"
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echo "libbusybox: $sharedlib_dir/libbusybox.so.$BB_VER"
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fi
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EXE="0lib/busybox"
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try $CC $LDFLAGS \
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if test "$CONFIG_FEATURE_SHARED_BUSYBOX" = y; then
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EXE="$sharedlib_dir/busybox_unstripped"
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try $CC $LDFLAGS \
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-o $EXE -Wl,-Map -Wl,$EXE.map \
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-Wl,--warn-common -Wl,--sort-common -Wl,--gc-sections \
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-Wl,--start-group $O_FILES -Wl,--end-group \
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$l_list -Wl,--verbose \
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-L"0lib" -lbusybox \
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-L"$sharedlib_dir" -lbusybox \
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>/dev/null \
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echo "Linking $EXE failed"
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exit 1
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}
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strip -s --remove-section=.note --remove-section=.comment $EXE
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echo "Linking $EXE failed"
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cat $EXE.out
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exit 1
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}
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strip -s --remove-section=.note --remove-section=.comment $EXE -o "$sharedlib_dir/busybox"
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echo "busybox linked against libbusybox: $sharedlib_dir/busybox"
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fi
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