Bug 375729 – dev-libs/klibc-1.5.23 fails with ld.gold: ,noexecstack: unknown -z option

• Product: Gentoo Linux
• Status: RESOLVED FIXED

[Description Justin Lecher (RETIRED) 2011-07-20 08:03:07 UTC]

ld -m elf_x86_64 -o usr/kinit/ipconfig/static/ipconfig -z,noexecstack usr/klibc/arch/x86_64/crt0.o --start-group  usr/kinit/ipconfig/main.o usr/kinit/ipconfig/netdev.o usr/kinit/ipconfig/packet.o usr/kinit/ipconfig/dhcp_proto.o usr/kinit/ipconfig/bootp_proto.o  usr/klibc/libc.a /usr/lib/gcc/x86_64-pc-linux-gnu/4.6.1/libgcc.a --end-group ; cp -f usr/kinit/ipconfig/static/ipconfig usr/kinit/ipconfig/static/ipconfig.g ; strip --strip-all -R .comment -R .note --strip-all -R .comment -R .note --strip-all -R .comment -R .note usr/kinit/ipconfig/static/ipconfig
ld: ,noexecstack: unknown -z option
ld: use the --help option for usage information
make[3]: *** [usr/kinit/ipconfig/static/ipconfig] Error 1
make[2]: *** [usr/kinit/ipconfig] Error 2
make[1]: *** [all] Error 2
make: *** [klibc] Error 2
emake failed
 * ERROR: dev-libs/klibc-1.5.23 failed (compile phase):
 *   Compile failed!




$ einfo =dev-libs/klibc-1.5.23
sh: einfo: command not found

[Comment 1 Justin Lecher (RETIRED) 2011-07-20 08:04:30 UTC]

Created attachment 280433 [details]
/tmp/einfo

emerge --info

[Comment 2 Justin Lecher (RETIRED) 2011-07-20 08:05:03 UTC]

Created attachment 280435 [details]
/var/log/portage/build/dev-libs/klibc-1.5.23:20110720-075810.log

build.log

[Comment 3 Mike Pagano 2011-11-02 16:00:16 UTC]

I can seem to reproduce this withh gcc-4.6.2. Is this still an issue for you with that compiler?

[Comment 4 Justin Lecher (RETIRED) 2011-11-02 16:14:59 UTC]

same with latest gcc:4.6 binutils and klibc.

[Comment 5 Mike Pagano 2011-11-05 19:16:23 UTC]

I'm not sure why mine would work, and yours would not.

Same klibc
Same binutils
Same arch


rm -f usr/kinit/ipconfig/lib.a; ar cru usr/kinit/ipconfig/lib.a usr/kinit/ipconfig/main.o usr/kinit/ipconfig/netdev.o usr/kinit/ipconfig/packet.o usr/kinit/ipconfig/dhcp_proto.o usr/kinit/ipconfig/bootp_proto.o
  ld -m elf_x86_64 -o usr/kinit/ipconfig/static/ipconfig -z,noexecstack usr/klibc/arch/x86_64/crt0.o --start-group  usr/kinit/ipconfig/main.o usr/kinit/ipconfig/netdev.o usr/kinit/ipconfig/packet.o usr/kinit/ipconfig/dhcp_proto.o usr/kinit/ipconfig/bootp_proto.o  usr/klibc/libc.a /usr/lib/gcc/x86_64-pc-linux-gnu/4.5.3/libgcc.a --end-group ; cp -f usr/kinit/ipconfig/static/ipconfig usr/kinit/ipconfig/static/ipconfig.g ; strip --strip-all -R .comment -R .note --strip-all -R .comment -R .note --strip-all -R .comment -R .note usr/kinit/ipconfig/static/ipconfig
  ld -m elf_x86_64 -o usr/kinit/ipconfig/shared/ipconfig -z,noexecstack -e main usr/klibc/interp.o --start-group  usr/kinit/ipconfig/main.o usr/kinit/ipconfig/netdev.o usr/kinit/ipconfig/packet.o usr/kinit/ipconfig/dhcp_proto.o usr/kinit/ipconfig/bootp_proto.o  -R usr/klibc/libc.so /usr/lib/gcc/x86_64-pc-linux-gnu/4.5.3/libgcc.a --end-group ; cp -f usr/kinit/ipconfig/shared/ipconfig usr/kinit/ipconfig/shared/ipconfig.g ; strip --strip-all -R .comment -R .note --strip-all -R .comment -R .note --strip-all -R .comment -R .note usr/kinit/ipconfig/shared/ipconfig
   rm -f usr/kinit/fstype/lib.a; ar cru usr/kinit/fstype/lib.a usr/kinit/fstype/main.o usr/kinit/fstype/fstype.o

[Comment 6 Tim Harder 2011-11-08 04:54:08 UTC]

(In reply to comment #5)
> I'm not sure why mine would work, and yours would not.

Are you using the gold linker as mentioned in the summary? I can reproduce this using it.

[Comment 7 Mike Pagano 2012-03-22 23:42:37 UTC]

Not sure gold linker can compile klibc. toolchain, any thoughts?

[Comment 8 Justin Lecher (RETIRED) 2012-03-23 07:42:39 UTC]

gold doesn't except -z,noexecstack, it needs to be -Wl,-z,noexecstack.

[Comment 9 SpanKY 2012-03-24 06:37:51 UTC]

(In reply to comment #8)

not quite.  the compiler driver accepts -Wl,-z,noexecstack.  when invoking the linker, you have to drop the comma:
  ld ... -z noexecstack ...

atm your invocation is doing:
  ld ... -z,noexecstack ...

hence the error:
  ld: ,noexecstack: unknown -z option

because it's treating ",noexecstack" as the option.

the ebuild is clearly broken:
klibc-1.5.25.ebuild:            EXTRA_KLIBCLDFLAGS="-z,noexecstack" \

[Comment 10 Mike Pagano 2013-03-16 23:12:34 UTC]

Fixed in >= 1.5.25