On modern host distributions with recent binutils, make with GDBSERVER=y fails during Buildroot rootfs generation with:
/bin/sh: symbol lookup error:
.../out-br/host/lib/libreadline.so.8: undefined symbol: UP
Host: Arch Linux, gcc 16.1.1, binutils 2.46.1.
Buildroot: tag 2026.02.2.
Config: GDBSERVER=y (enables BR2_PACKAGE_HOST_GDB=y).
Looks like the root cause is in Buildroot's package/readline/readline.mk: READLINE_CONF_OPTS is not propagated to the host variant, so --with-shared-termcap-library is dropped for host-readline. The resulting host libreadline.so.8 has no DT_NEEDED on ncurses/tinfo; termcap symbols (UP, BC, tgetent, ...) are unresolved. Under modern binutils enforcing --no-copy-dt-needed-entries, any process loading this libreadline via LD_LIBRARY_PATH aborts. fakeroot prepends $(HOST_DIR)/lib, so /bin/sh dies and cpio/tar rootfs generation fails.
This seems to be part of a spate of recent similar issues
#842
OP-TEE/manifest#179
OP-TEE/manifest#347
It is getting 'fixed "by itself" soon' ;-) with a patch submitted to upstream in Buildroot. So, if/when that is merged, I guess OP-TEE should update its dependency. I'm posting this issue for tracking it.
https://lists.buildroot.org/pipermail/buildroot/2026-July/806328.html
On modern host distributions with recent binutils,
makewithGDBSERVER=yfails during Buildroot rootfs generation with:Host: Arch Linux, gcc 16.1.1, binutils 2.46.1.
Buildroot: tag 2026.02.2.
Config: GDBSERVER=y (enables BR2_PACKAGE_HOST_GDB=y).
Looks like the root cause is in Buildroot's package/readline/readline.mk: READLINE_CONF_OPTS is not propagated to the host variant, so --with-shared-termcap-library is dropped for host-readline. The resulting host libreadline.so.8 has no DT_NEEDED on ncurses/tinfo; termcap symbols (UP, BC, tgetent, ...) are unresolved. Under modern binutils enforcing --no-copy-dt-needed-entries, any process loading this libreadline via LD_LIBRARY_PATH aborts. fakeroot prepends $(HOST_DIR)/lib, so /bin/sh dies and cpio/tar rootfs generation fails.
This seems to be part of a spate of recent similar issues
#842
OP-TEE/manifest#179
OP-TEE/manifest#347
It is getting 'fixed "by itself" soon' ;-) with a patch submitted to upstream in Buildroot. So, if/when that is merged, I guess OP-TEE should update its dependency. I'm posting this issue for tracking it.
https://lists.buildroot.org/pipermail/buildroot/2026-July/806328.html