| commit | 1fdc9797f32c711c35a8a61a591607c8fa8a5468 | [log] [tgz] |
|---|---|---|
| author | Marco Felsch <m.felsch@pengutronix.de> | Wed Nov 09 12:59:09 2022 +0100 |
| committer | Okash Khawaja <okash@google.com> | Tue May 30 18:35:55 2023 +0100 |
| tree | 102551b5d2caf2222d856c8e053329abf0a8a88e | |
| parent | 8782b8849147aef0e0f8dcf54ec3f2d980acbf50 [diff] |
feat(build): add support for new binutils versions Users of GNU ld (BPF) from binutils 2.39+ will observe multiple instaces of a new warning when linking the bl*.elf in the form: ld.bfd: warning: stm32mp1_helper.o: missing .note.GNU-stack section implies executable stack ld.bfd: NOTE: This behaviour is deprecated and will be removed in a future version of the linker ld.bfd: warning: bl2.elf has a LOAD segment with RWX permissions ld.bfd: warning: bl32.elf has a LOAD segment with RWX permissions These new warnings are enbaled by default to secure elf binaries: - https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=ba951afb99912da01a6e8434126b8fac7aa75107 - https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=0d38576a34ec64a1b4500c9277a8e9d0f07e6774 Fix it in a similar way to what the Linux kernel does, see: https://lore.kernel.org/all/20220810222442.2296651-1-ndesaulniers@google.com/ Following the reasoning there, we set "-z noexecstack" for all linkers (although LLVM's LLD defaults to it) and optional add --no-warn-rwx-segments since this a ld.bfd related. Signed-off-by: Marco Felsch <m.felsch@pengutronix.de> Signed-off-by: Robert Schwebel <r.schwebel@pengutronix.de> Change-Id: I9430f5fa5036ca88da46cd3b945754d62616b617 (cherry picked from commit 1f49db5f25cdd4e43825c9bcc0575070b80f628c)