`arc_unpacker` fails to build with GCC 13 because GCC stopped
transitively including `cstdint` in a lot of scenarios.
While the project is inactive (the repository has been archived
on GitHub), the Arch Linux user repository already contains a
patch that fixes this issue.
Since ofborg indicated unit test failures on darwin-aarch64,
this change also marks the package as broken for such machines.
Note that these test failures are very unlikely to be caused
by the patch applied here, as it only adds a single
`#include <cstdint>` statement in a single file and that
specific include has been pulled in with older versions
of GCC, anyway.
Co-authored-by: midchildan <git@midchildan.org>
Co-authored-by: annalee <150648636+a-n-n-a-l-e-e@users.noreply.github.com>
libiconv is already defined per-platform. The actual libiconv library
won't be built on platforms like Linux where it doesn't need to be, so
there's no need to maintain a separate platform list here.
Required to build for FreeBSD.
catch is ancient and has no support for aarch64-darwin. The following
snippet is an example of what is supported on darwin platforms in catch
(i.e., prior to v2).
```
#ifdef CATCH_PLATFORM_MAC
#if defined(__ppc64__) || defined(__ppc__)
#define CATCH_TRAP() \
__asm__("li r0, 20\nsc\nnop\nli r0, 37\nli r4, 2\nsc\nnop\n" \
: : : "memory","r0","r3","r4" ) /* NOLINT */
#else
#define CATCH_TRAP() __asm__("int $3\n" : : /* NOLINT */ )
#endif
```
