elf: Discard input .note.gnu.build-id sections

Originally issue:
building of glibc 2.32 or 2.34 with option "-Wl,--build-id"
produce libc.so.6 with section ".note.gnu.build-id" that have
invalid(double, 0x48) section size. It happens because glibc
use sublibraries for linking libc.so.6
ld produce this sublibraries with build-id section and on last
linking stage loads this sections as input for linking.
ld should create new(valid) ".note.gnu.build-id" into function
ldelf_setup_build_id on last linking stage but it skip creating because
build-id section already exists.
As result libc.so.6 contain ".note.gnu.build-id" with build-ids from
sublibraries and without valid build-id

Howto solved:
1. Discard input .note.gnu.build-id sections.
2. Clear the build ID field before writing.
3. Use bfd_make_section_anyway_with_flags to create the output
   .note.gnu.build-id section.

Upstream-Status: Backport

Reference to upstream patch:
[https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=1f1d0f8888a6c944e612b416a2a6e11abcf5199f]

(From OE-Core rev: 68bbff44a481a036dc7d39e5d5745a01ccffdb95)

Signed-off-by: Valerii Chernous <vchernou@cisco.com>
Signed-off-by: Valery Chernous <valery.chernous@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Valerii Chernous
2021-12-10 19:53:37 +02:00
committed by Richard Purdie
parent c9351aee3f
commit e9558a166e
2 changed files with 216 additions and 0 deletions

View File

@@ -32,5 +32,6 @@ SRC_URI = "\
file://0015-sync-with-OE-libtool-changes.patch \
file://0016-Check-for-clang-before-checking-gcc-version.patch \
file://0017-bfd-Close-the-file-descriptor-if-there-is-no-archive.patch \
file://0001-elf-Discard-input-.note.gnu.build-id-sections.patch \
"
S = "${WORKDIR}/git"