https://www.sourceware.org/bugzilla/show_bug.cgi?id=25832
https://cgit.openembedded.org/openembedded-core/plain/meta/recipes-devtools/elfutils/files/0006-Fix-build-on-aarch64-musl.patch
https://bugs.gentoo.org/693772

Other variants/links:
https://git.alpinelinux.org/aports/tree/main/elfutils/fix-aarch64_fregs.patch
https://github.com/gentoo/musl/blob/6450482b9b4463b57ac249c63b7ed796e9874c40/dev-libs/elfutils/files/0.178/fix-aarch64_fregs.patch

From: Hongxu Jia <hongxu.jia@windriver.com>
Date: Tue, 15 Aug 2017 17:27:30 +0800
Subject: [PATCH] Fix build on aarch64/musl

Errors

invalid operands to binary & (have 'long double' and 'unsigned int')

error: redefinition
 of 'struct iovec'
 struct iovec { void *iov_base; size_t iov_len; };
        ^
Upstream-Status: Pending
Signed-off-by: Khem Raj <raj.khem@gmail.com>

Rebase to 0.170
Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>

--- a/backends/aarch64_initreg.c
+++ b/backends/aarch64_initreg.c
@@ -33,7 +33,7 @@
 #include "system.h"
 #include <assert.h>
 #if defined(__aarch64__) && defined(__linux__)
-# include <linux/uio.h>
+# include <sys/uio.h>
 # include <sys/user.h>
 # include <sys/ptrace.h>
 /* Deal with old glibc defining user_pt_regs instead of user_regs_struct.  */
@@ -82,7 +82,7 @@ aarch64_set_initial_registers_tid (pid_t tid __attribute__ ((unused)),
 
   Dwarf_Word dwarf_fregs[32];
   for (int r = 0; r < 32; r++)
-    dwarf_fregs[r] = fregs.vregs[r] & 0xFFFFFFFF;
+    dwarf_fregs[r] = (unsigned int)fregs.vregs[r] & 0xFFFFFFFF;
 
   if (! setfunc (64, 32, dwarf_fregs, arg))
     return false;
--- a/backends/arm_initreg.c
+++ b/backends/arm_initreg.c
@@ -38,7 +38,7 @@
 #endif
 
 #ifdef __aarch64__
-# include <linux/uio.h>
+# include <sys/uio.h>
 # include <sys/user.h>
 # include <sys/ptrace.h>
 /* Deal with old glibc defining user_pt_regs instead of user_regs_struct.  */