[compiler-rt] [compiler-rt][tests][AIX] Use /opt/freeware/bin/env (PR #133160)

[Hubert Tong via llvm-commits]

https://github.com/hubert-reinterpretcast created https://github.com/llvm/llvm-project/pull/133160

`env -u` is not supported by the system `env` utility on AIX.
`/opt/freeware/bin/env` is the standard path for the GNU coreutils `env` utility as distributed by the AIX Toolbox for Open Source Software.
Adding `/opt/freeware/bin` to `PATH` causes issues by picking up other utilities that are less capable, in an AIX context, than the system ones.
This patch modifies the relevant usage of `env` to use (on AIX) the full path to `/opt/freeware/bin/env`.


>From 06ae31fea846298753728708c166073d39340c80 Mon Sep 17 00:00:00 2001
From: Hubert Tong <hubert.reinterpretcast at gmail.com>
Date: Wed, 26 Mar 2025 02:56:57 -0400
Subject: [PATCH] [compiler-rt][tests][AIX] Use /opt/freeware/bin/env

`env -u` is not supported by the system `env` utility on AIX.
---
 compiler-rt/test/lit.common.cfg.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/compiler-rt/test/lit.common.cfg.py b/compiler-rt/test/lit.common.cfg.py
index e15b8aefdd09b..877718c703ba7 100644
--- a/compiler-rt/test/lit.common.cfg.py
+++ b/compiler-rt/test/lit.common.cfg.py
@@ -395,9 +395,10 @@ def get_ios_commands_dir():
         if sanitizer not in config.environment:
             config.environment[sanitizer] = symbolizer_path
 
+env_utility = "/opt/freeware/bin/env" if config.host_os == "AIX" else "env"
 env_unset_command = " ".join(f"-u {var}" for var in tool_symbolizer_path_list)
 config.substitutions.append(
-    ("%env_unset_tool_symbolizer_path", f"env {env_unset_command}")
+    ("%env_unset_tool_symbolizer_path", f"{env_utility} {env_unset_command}")
 )
 
 # Allow tests to be executed on a simulator or remotely.