[PATCH] Add replacement endian.h and byteswap.h to libgnu

Ulf Hermann ulf.hermann@qt.io
Thu Nov 16 08:54:00 GMT 2017

>> Some systems don't provide endian.h and byteswap.h. The required
>> functions are trivial to define using sys/param.h and gcc builtins,
>> though.
>> Also, include endian.h in dwelf_scn_gnu_compressed_size.c as that uses
>> be64toh().
> This is still an issue with non-glibc, non-BSD compilation.  The patch
> is not ideal, as it depends on a GCC extension, but it's an
> improvement for those who use GCC on a platform which does not provide
> these functions as part of the C library.

Well, there are a lot of other issues to be fixed if you want to build elfutils on anything non-gcc. We could add a further check for those builtins and sys/param.h and then add a somewhat less trivial version of endian.h and byteswap.h if they are missing. But that would likely involve other compiler extensions or OS-specific headers.


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