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* tools/libelf: remove unneeded host libraryTony Ambardar2021-03-131-198/+0
| | | | | | | | | | | | | | | | | | | | This old ELF library dating to 2009 used to be necessary on MacOS but is not required for building the kernel or tools since [1]. On Linux systems, libelf is already an OpenWRT build-system prerequisite [2]. Presence of the older library can mask or conflict with the system libelf and lead to build errors, as seen compiling Linux kernels since v5.8 or host tools such as dwarves (e.g. pahole). Remove the unnecessary tools/libelf library and avoid the related issues. [1] 5f8e587240 ("build: force disable stack validation during kernel build on non-linux systems") [2] https://openwrt.org/docs/guide-developer/build-system/install-buildsystem#prerequisites Tested-by: Rosen Penev <rosenp@gmail.com> (Linux) Tested-by: Georgi Valkov <gvalkov@abv.bg> (MacOS) Signed-off-by: Tony Ambardar <itugrok@yahoo.com>
* tools: libelf: fix headers to trigger -Wundef warningsJo-Philipp Wich2019-09-031-0/+198
When libelf from tools/ is used for building the kernel, compilation aborts due to access to undefined defines since Kbuild adds -Wundef to the compiler flags. Patch the header files to use `#if defined(...)` instead of `#if ...` to prevent such issues. Ref: https://github.com/NixOS/nixpkgs/issues/59929 Signed-off-by: Jo-Philipp Wich <jo@mein.io>