From 362a44a122d51096d301a9aeba86c8c7dbf40ed6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alex=20R=C3=B8nne=20Petersen?= <alex@alexrp.com>
Date: Sun, 19 Oct 2025 22:31:57 +0200
Subject: [PATCH] std.Target: better Abi.default() behavior for arc and xtensa

---
 lib/std/Target.zig | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/lib/std/Target.zig b/lib/std/Target.zig
index 9638b1ddb0..7ad66e7590 100644
--- a/lib/std/Target.zig
+++ b/lib/std/Target.zig
@@ -825,13 +825,13 @@ pub const Abi = enum {
                 // Soft float is usually a sane default for freestanding.
                 .arm,
                 .armeb,
-                .thumb,
-                .thumbeb,
                 .csky,
                 .mips,
                 .mipsel,
                 .powerpc,
                 .powerpcle,
+                .thumb,
+                .thumbeb,
                 => .eabi,
                 else => .none,
             },
@@ -846,20 +846,28 @@ pub const Abi = enum {
             .linux => switch (arch) {
                 .arm,
                 .armeb,
-                .thumb,
-                .thumbeb,
                 .powerpc,
                 .powerpcle,
+                .thumb,
+                .thumbeb,
                 => .musleabihf,
-                // Soft float tends to be more common for CSKY and MIPS.
-                .csky,
-                => .gnueabi, // No musl support.
                 .mips,
                 .mipsel,
                 => .musleabi,
                 .mips64,
                 .mips64el,
                 => .muslabi64,
+
+                // No musl support.
+                .arc,
+                => .gnu,
+                .csky,
+                => .gnueabi,
+
+                // No glibc or musl support.
+                .xtensa,
+                => .none,
+
                 else => .musl,
             },
             .rtems => switch (arch) {