[FS#1154] Missing execinfo.h from sources

[LEDE Bugs]

The following task has a new comment added:

FS#1154 - Missing execinfo.h from sources
User who did this - Matthias Schiffer (NeoRaider)

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execinfo.h is a glibc-specific header file, and it is not availble in alternative libc implementations like musl, which is used by LEDE.

You can select glibc instead of musl if you build LEDE from source (please refer to our Wiki if you're new to this), but a glibc-based image will be too big for many smaller devices, and a package built for glibc won't be able to run on a standard (release/snapshot) LEDE system.

If your package can't be patched/configured to work without the features defined in execinfo.h, it simply can't work on a standard LEDE system, sorry.
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1154#comment3794