From df5596e9c1ee24e5f6a21ec3dd5983e10232daac Mon Sep 17 00:00:00 2001
From: Eli Schwartz <eschwartz@archlinux.org>
Date: Wed, 27 Jul 2022 01:56:17 -0400
Subject: [PATCH] linkers: include linker detection output in the debug logs

We do something similar when running get_compiler() method checks from
the DSL. This ensures that if errors happen, the log file we tell people
to check actually works.
---
 mesonbuild/linkers/detect.py | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/mesonbuild/linkers/detect.py b/mesonbuild/linkers/detect.py
index 6248ac940c02..72bd0a1908b7 100644
--- a/mesonbuild/linkers/detect.py
+++ b/mesonbuild/linkers/detect.py
@@ -14,6 +14,7 @@
 
 from __future__ import annotations
 
+from .. import mlog
 from ..mesonlib import (
     EnvironmentException, OptionKey,
     Popen_safe, join_args, search_version
@@ -152,7 +153,13 @@ def guess_nix_linker(env: 'Environment', compiler: T.List[str], comp_class: T.Ty
         override = comp_class.use_linker_args(value[0], comp_version)
         check_args += override
 
-    _, o, e = Popen_safe(compiler + check_args)
+    mlog.debug('-----')
+    mlog.debug(f'Detecting linker via: {join_args(compiler + check_args)}')
+    p, o, e = Popen_safe(compiler + check_args)
+    mlog.debug(f'linker returned {p}')
+    mlog.debug(f'linker stdout:\n{o}')
+    mlog.debug(f'linker stderr:\n{e}')
+
     v = search_version(o + e)
     linker: DynamicLinker
     if 'LLD' in o.split('\n')[0]: