From 861d7b908725501470a4b613f9619f62aefd5e41 Mon Sep 17 00:00:00 2001
From: Carlo Cabrera <30379873+carlocab@users.noreply.github.com>
Date: Sun, 29 Sep 2024 05:15:36 +0800
Subject: [PATCH 1/2] linkage_checker: skip files with incompatible
 architectures

Some formulae include these files, and they can't always be removed.
However, they can cause spurious linkage failures, so let's skip them
when checking for linkage. See, for example, faust at
Homebrew/homebrew-core#191308.
---
 Library/Homebrew/extend/pathname.rb | 5 +++++
 Library/Homebrew/linkage_checker.rb | 1 +
 Library/Homebrew/os/linux/elf.rb    | 6 ++++++
 Library/Homebrew/os/mac/mach.rb     | 7 +++++++
 4 files changed, 19 insertions(+)

diff --git a/Library/Homebrew/extend/pathname.rb b/Library/Homebrew/extend/pathname.rb
index 0df8d17dd43e1..1f7a787376c24 100644
--- a/Library/Homebrew/extend/pathname.rb
+++ b/Library/Homebrew/extend/pathname.rb
@@ -469,6 +469,11 @@ def dylib?
     false
   end
 
+  sig { params(_wanted_arch: Symbol).returns(T::Boolean) }
+  def arch_compatible?(_wanted_arch)
+    false
+  end
+
   sig { returns(T::Array[String]) }
   def rpaths
     []
diff --git a/Library/Homebrew/linkage_checker.rb b/Library/Homebrew/linkage_checker.rb
index 1f3bb08cc36bc..7d986104247e2 100644
--- a/Library/Homebrew/linkage_checker.rb
+++ b/Library/Homebrew/linkage_checker.rb
@@ -115,6 +115,7 @@ def check_dylibs(rebuild_cache:)
       @keg.find do |file|
         next if file.symlink? || file.directory?
         next if !file.dylib? && !file.binary_executable? && !file.mach_o_bundle?
+        next unless file.arch_compatible?(Hardware::CPU.arch)
 
         # weakly loaded dylibs may not actually exist on disk, so skip them
         # when checking for broken linkage
diff --git a/Library/Homebrew/os/linux/elf.rb b/Library/Homebrew/os/linux/elf.rb
index 91c4407670554..116c9ea23f4d0 100644
--- a/Library/Homebrew/os/linux/elf.rb
+++ b/Library/Homebrew/os/linux/elf.rb
@@ -68,6 +68,12 @@ def arch
     end
   end
 
+  def arch_compatible?(wanted_arch)
+    return true unless elf?
+
+    wanted_arch == arch
+  end
+
   def elf_type
     return :dunno unless elf?
 
diff --git a/Library/Homebrew/os/mac/mach.rb b/Library/Homebrew/os/mac/mach.rb
index a632b3d128bea..fdb4ffd3874e3 100644
--- a/Library/Homebrew/os/mac/mach.rb
+++ b/Library/Homebrew/os/mac/mach.rb
@@ -155,6 +155,13 @@ def ppc64?
     arch == :ppc64
   end
 
+  def arch_compatible?(wanted_arch)
+    return true unless mach_data.present?
+    return arch == wanted_arch unless universal?
+
+    archs.include?(wanted_arch)
+  end
+
   def dylib?
     mach_data.any? { |m| m.fetch(:type) == :dylib }
   end

From 6329db9065ae670f0f69454b3e58ec81ba7b3ea3 Mon Sep 17 00:00:00 2001
From: Carlo Cabrera <30379873+carlocab@users.noreply.github.com>
Date: Mon, 30 Sep 2024 22:29:03 +0800
Subject: [PATCH 2/2] Remove macOS implementation of `#arch_compatible?`

We don't really need this.
---
 Library/Homebrew/extend/pathname.rb | 2 +-
 Library/Homebrew/os/mac/mach.rb     | 7 -------
 2 files changed, 1 insertion(+), 8 deletions(-)

diff --git a/Library/Homebrew/extend/pathname.rb b/Library/Homebrew/extend/pathname.rb
index 1f7a787376c24..49f5d0111d588 100644
--- a/Library/Homebrew/extend/pathname.rb
+++ b/Library/Homebrew/extend/pathname.rb
@@ -471,7 +471,7 @@ def dylib?
 
   sig { params(_wanted_arch: Symbol).returns(T::Boolean) }
   def arch_compatible?(_wanted_arch)
-    false
+    true
   end
 
   sig { returns(T::Array[String]) }
diff --git a/Library/Homebrew/os/mac/mach.rb b/Library/Homebrew/os/mac/mach.rb
index fdb4ffd3874e3..a632b3d128bea 100644
--- a/Library/Homebrew/os/mac/mach.rb
+++ b/Library/Homebrew/os/mac/mach.rb
@@ -155,13 +155,6 @@ def ppc64?
     arch == :ppc64
   end
 
-  def arch_compatible?(wanted_arch)
-    return true unless mach_data.present?
-    return arch == wanted_arch unless universal?
-
-    archs.include?(wanted_arch)
-  end
-
   def dylib?
     mach_data.any? { |m| m.fetch(:type) == :dylib }
   end