| commit | 24ad840570ac60d2d8b55978e86688f39675ec8c | [log] [tgz] |
|---|---|---|
| author | Marco Felsch <m.felsch@pengutronix.de> | Wed Nov 09 12:59:09 2022 +0100 |
| committer | Marco Felsch <m.felsch@pengutronix.de> | Mon Mar 13 10:55:50 2023 +0100 |
| tree | 60ce958fd006ffa31dc9b7496239542b8375b8e5 | |
| parent | df646b536fdf1955607f98464942590f98418692 [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