96ccfcaa66
Somewhere between binutils 2.35 and 2.37, some functionality was
added in readelf to parse more DWARF information. Unfortunately, as
reported in binutils bug
28981 ("https://sourceware.org/bugzilla/show_bug.cgi?id=28981"), this
feature causes a number of fairly scary warnings to be displayed when
running readelf on binaries built with Clang, such as the pre-built
rustc and rustdoc binaries part of the host-rust-bin package. It
looks like this:
readelf: /home/thomas/projets/buildroot/output/host/bin/rustc: Warning: Unrecognized form: 0x23
readelf: /home/thomas/projets/buildroot/output/host/bin/rustc: Warning: Bogus end-of-siblings marker detected at offset 2f in .debug_info section
readelf: /home/thomas/projets/buildroot/output/host/bin/rustc: Warning: Unrecognized form: 0x22
readelf: /home/thomas/projets/buildroot/output/host/bin/rustc: Warning: Bogus end-of-siblings marker detected at offset 10b in .debug_info section
readelf: /home/thomas/projets/buildroot/output/host/bin/rustc: Warning: Bogus end-of-siblings marker detected at offset 10c in .debug_info section
readelf: /home/thomas/projets/buildroot/output/host/bin/rustc: Warning: Further warnings about bogus end-of-sibling markers suppressed
readelf: /home/thomas/projets/buildroot/output/host/bin/rustc: Warning: Unrecognized form: 0x22
readelf: /home/thomas/projets/buildroot/output/host/bin/rustc: Warning: Unrecognized form: 0x22
readelf: /home/thomas/projets/buildroot/output/host/bin/rustc: Warning: Unrecognized form: 0x22
readelf: /home/thomas/projets/buildroot/output/host/bin/rustc: Warning: Unrecognized form: 0x23
readelf: /home/thomas/projets/buildroot/output/host/bin/rustc: Warning: Unrecognized form: 0x22
readelf: /home/thomas/projets/buildroot/output/host/bin/rustc: Warning: Unrecognized form: 0x23
readelf: /home/thomas/projets/buildroot/output/host/bin/rustc: Warning: Unrecognized form: 0x22
readelf: /home/thomas/projets/buildroot/output/host/bin/rustc: Warning: Unrecognized form: 0x22
readelf: /home/thomas/projets/buildroot/output/host/bin/rustc: Warning: Unrecognized form: 0x22
readelf: /home/thomas/projets/buildroot/output/host/bin/rustc: Warning: Unrecognized form: 0x23
readelf: /home/thomas/projets/buildroot/output/host/bin/rustc: Warning: Unrecognized form: 0x22
readelf: /home/thomas/projets/buildroot/output/host/bin/rustc: Warning: Unrecognized form: 0x23
readelf: /home/thomas/projets/buildroot/output/host/bin/rustc: Warning: Unrecognized form: 0x22
readelf: /home/thomas/projets/buildroot/output/host/bin/rustc: Warning: DIE at offset 0x1da refers to abbreviation number 5827 which does not exist
These warnings are caused by the readelf calls done by the
support/scripts/check-host-rpath script. The annoying thing is that
once host-rust-bin has been installed in $(HOST_DIR), this warning
appears after the installation of every single host package, because
support/scripts/check-host-rpath rescans all binaries every time.
To avoid showing those scary warnings, this commit sends the error
output of readelf to /dev/null.
Of course, it would be nicer to only filter out those warnings, but
filtering the error output without merging the error output into the
standard output is tricky, so let's keep things simple. If there is
really an error, readelf will abort.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit
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|---|---|---|
| arch | ||
| board | ||
| boot | ||
| configs | ||
| docs | ||
| fs | ||
| linux | ||
| package | ||
| support | ||
| system | ||
| toolchain | ||
| utils | ||
| .clang-format | ||
| .defconfig | ||
| .flake8 | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| .shellcheckrc | ||
| CHANGES | ||
| Config.in | ||
| Config.in.legacy | ||
| COPYING | ||
| DEVELOPERS | ||
| Makefile | ||
| Makefile.legacy | ||
| README | ||
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches