[Clfs-support] [clfs-embedded] Could not compile dropbear 2022.83 on i486-linux-musl

[Michele Bucca]

Hello there.
Recently I'm trying to update the clfs-embedded book by using up to
date packages. (https://michele13.github.io/clfs-embedded/x86/)
Everything has worked so far until I've tried to compile  dropbear
2022.83.
when I run the command

make MULTI=1 \
  PROGRAMS="dropbear dbclient dropbearkey dropbearconvert scp"

I get the following error:

i486-linux-musl-gcc --sysroot=/mnt/clfs/targetfs -Os -Wl,-z,now
-Wl,-z,relro -Wl,-pie  -o dropbearmulti dbmulti.o atomicio.o bignum.o
buffer.o chachapoly.o circbuffer.o cli-agentfwd.o cli-auth.o
cli-authinteract.o cli-authpasswd.o cli-authpubkey.o cli-channel.o
cli-chansession.o cli-kex.o cli-main.o cli-runopts.o cli-session.o
cli-tcpfwd.o common-algo.o common-channel.o common-chansession.o
common-kex.o common-runopts.o common-session.o compat.o crypto_desc.o
curve25519.o dbhelpers.o dbmalloc.o dbrandom.o dbutil.o dh_groups.o
dropbearconvert.o dropbearkey.o dss.o ecc.o ecdsa.o ed25519.o
fake-rfc2553.o gcm.o gendss.o gened25519.o genrsa.o gensignkey.o
keyimport.o list.o listener.o loginrec.o ltc_prng.o netio.o packet.o
process-packet.o progressmeter.o queue.o rsa.o scp.o scpmisc.o
signkey.o signkey_ossh.o sk-ecdsa.o sk-ed25519.o sshpty.o
svr-agentfwd.o svr-auth.o svr-authpam.o svr-authpasswd.o
svr-authpubkey.o svr-authpubkeyoptions.o svr-chansession.o svr-kex.o
svr-main.o svr-runopts.o svr-service.o svr-session.o svr-tcpfwd.o
svr-x11fwd.o tcp-accept.o termcodes.o libtomcrypt/libtomcrypt.a
libtommath/libtommath.a -lz  -lcrypt
/mnt/clfs/cross-tools/lib/gcc/i486-linux-musl/13.2.0/../../../../i486-linux-musl/bin/ld:
/mnt/clfs/cross-tools/lib/gcc/i486-linux-musl/13.2.0/crtbegin.o:
warning: relocation in read-only section `.text'
/mnt/clfs/cross-tools/lib/gcc/i486-linux-musl/13.2.0/../../../../i486-linux-musl/bin/ld:
buffer.o: in function `buf_putmpint':
buffer.c:(.text+0x723): undefined reference to `__stack_chk_fail_local'
/mnt/clfs/cross-tools/lib/gcc/i486-linux-musl/13.2.0/../../../../i486-linux-musl/bin/ld:
chachapoly.o: in function `dropbear_chachapoly_crypt':
chachapoly.c:(.text+0x1e2): undefined reference to `__stack_chk_fail_local'
/mnt/clfs/cross-tools/lib/gcc/i486-linux-musl/13.2.0/../../../../i486-linux-musl/bin/ld:
chachapoly.o: in function `dropbear_chachapoly_getlength':
chachapoly.c:(.text+0x2de): undefined reference to `__stack_chk_fail_local'
/mnt/clfs/cross-tools/lib/gcc/i486-linux-musl/13.2.0/../../../../i486-linux-musl/bin/ld:
cli-agentfwd.o: in function `cli_load_agent_keys':
cli-agentfwd.c:(.text+0x3a4): undefined reference to `__stack_chk_fail_local'
/mnt/clfs/cross-tools/lib/gcc/i486-linux-musl/13.2.0/../../../../i486-linux-musl/bin/ld:
cli-auth.o: in function `recv_msg_userauth_banner':
cli-auth.c:(.text+0x168): undefined reference to `__stack_chk_fail_local'
/mnt/clfs/cross-tools/lib/gcc/i486-linux-musl/13.2.0/../../../../i486-linux-musl/bin/ld:
cli-auth.o:cli-auth.c:(.text+0x391): more undefined references to
`__stack_chk_fail_local' follow
/mnt/clfs/cross-tools/lib/gcc/i486-linux-musl/13.2.0/../../../../i486-linux-musl/bin/ld:
dropbearmulti: hidden symbol `__stack_chk_fail_local' isn't defined
/mnt/clfs/cross-tools/lib/gcc/i486-linux-musl/13.2.0/../../../../i486-linux-musl/bin/ld:
final link failed: bad value
collect2: error: ld returned 1 exit status
make: *** [Makefile:224: dropbearmulti] Error 1

If I build the old version (2013.60) everything works.
I've followed the book's instructions without chainging nothing. Do
you know what might be the cause? I've also built the latest version
of dropbear using another toolchain I built using this script

https://github.com/michele13/linux-tools/blob/master/toolchains/toolchain-v2/x86_64-cross-linux-musl.sh

and I don't get any problems. What do you think it's wrong with my
clfs toolchain?
I'e also compiled a test program found here
(https://stackoverflow.com/questions/64679192/undefined-reference-to-stack-chk-fail-local)
but I get the same error:

int main()
{
  __stack_chk_fail_local();
  return 0;
}

gcc -o exec x.c -Wl,-Map,x.map

Cheers
Michele Bucca