From c5395f7cd948f02ada095515b9d6824cbbac4f22 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alex=20R=C3=B8nne=20Petersen?= <alex@alexrp.com>
Date: Wed, 30 Oct 2024 11:05:18 +0100
Subject: [PATCH] llvm: Set OS min version and libc version in ~all cases.

Except Windows, because that just doesn't really fit into LLVM's target triple
format currently.
---
 src/codegen/llvm.zig | 34 +++++++++++++++++++++++++++-------
 1 file changed, 27 insertions(+), 7 deletions(-)

diff --git a/src/codegen/llvm.zig b/src/codegen/llvm.zig
index 682b96d31a..2dcb1c3907 100644
--- a/src/codegen/llvm.zig
+++ b/src/codegen/llvm.zig
@@ -239,13 +239,20 @@ pub fn targetTriple(allocator: Allocator, target: std.Target) ![]const u8 {
     };
     try llvm_triple.appendSlice(llvm_os);
 
-    if (target.os.tag.isDarwin()) {
-        const min_version = target.os.version_range.semver.min;
-        try llvm_triple.writer().print("{d}.{d}.{d}", .{
-            min_version.major,
-            min_version.minor,
-            min_version.patch,
-        });
+    switch (target.os.versionRange()) {
+        .none,
+        .windows,
+        => {},
+        .semver => |ver| try llvm_triple.writer().print("{d}.{d}.{d}", .{
+            ver.min.major,
+            ver.min.minor,
+            ver.min.patch,
+        }),
+        .linux => |ver| try llvm_triple.writer().print("{d}.{d}.{d}", .{
+            ver.range.min.major,
+            ver.range.min.minor,
+            ver.range.min.patch,
+        }),
     }
     try llvm_triple.append('-');
 
@@ -279,6 +286,19 @@ pub fn targetTriple(allocator: Allocator, target: std.Target) ![]const u8 {
     };
     try llvm_triple.appendSlice(llvm_abi);
 
+    // This should eventually handle the Android API level too.
+    switch (target.os.versionRange()) {
+        .none,
+        .semver,
+        .windows,
+        => {},
+        .linux => |ver| if (target.abi.isGnu()) try llvm_triple.writer().print("{d}.{d}.{d}", .{
+            ver.glibc.major,
+            ver.glibc.minor,
+            ver.glibc.patch,
+        }),
+    }
+
     return llvm_triple.toOwnedSlice();
 }