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commit2531ba0e4aupstream. Thorsten reported build issue with command line that defined extra HOSTCFLAGS that were not passed into 'prepare' targets, but were used to build resolve_btfids objects. This results in build fail when these objects are linked together: /usr/bin/ld: /build.../tools/bpf/resolve_btfids//libbpf/libbpf.a(libbpf-in.o): relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a PIE \ object; recompile with -fPIE Fixing this by passing HOSTCFLAGS in EXTRA_CFLAGS as part of HOST_OVERRIDES variable for prepare targets. [1] https://lore.kernel.org/bpf/f7922132-6645-6316-5675-0ece4197bfff@leemhuis.info/ Fixes:56a2df7615("tools/resolve_btfids: Compile resolve_btfids as host program") Reported-by: Thorsten Leemhuis <linux@leemhuis.info> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Tested-by: Thorsten Leemhuis <linux@leemhuis.info> Acked-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/bpf/20230209143735.4112845-1-jolsa@kernel.org Cc: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.