Relocate libtool (.la) files as well as pkgconfig (.pc)

Ignore quotes, just do a global substitution on cellar and prefix.

Closes Homebrew/homebrew#24894.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Library/Homebrew/keg_fix_install_names.rb

@@ -40,13 +40,13 @@ class Keg
       end
     end
 
-    pkgconfig_files.each do |pcfile|
+    (pkgconfig_files | libtool_files).each do |file|
-      pcfile.ensure_writable do
+      file.ensure_writable do
-        pcfile.open('rb') do |f|
+        file.open('rb') do |f|
           s = f.read
-          replace_pkgconfig_file_path(s, old_cellar, new_cellar)
+          s.gsub!(old_cellar, new_cellar)
-          replace_pkgconfig_file_path(s, old_prefix, new_prefix)
+          s.gsub!(old_prefix, new_prefix)
-          f.reopen(pcfile, 'wb')
+          f.reopen(file, 'wb')
           f.write(s)
         end
       end
@@ -61,17 +61,6 @@ class Keg
     install_name_tool("-change", old, new, file)
   end
 
-  # Given old == "/usr/local/Cellar" and new == "/opt/homebrew/Cellar",
-  # then update lines of the form
-  #   some_variable=/usr/local/Cellar/foo/1.0/lib
-  # to
-  #   some_variable="/opt/homebrew/Cellar/foo/1.0/lib"
-  # and add quotes to protect against paths containing spaces.
-  def replace_pkgconfig_file_path(s, old, new)
-    return if old == new
-    s.gsub!(%r[([\S]+)="?#{Regexp.escape(old)}(.*?)"?$], "\\1=\"#{new}\\2\"")
-  end
-
   # Detects the C++ dynamic libraries in place, scanning the dynamic links
   # of the files within the keg. This searches only libs contained within
   # lib/, and ignores binaries and other mach-o objects
@@ -198,4 +187,16 @@ class Keg
     end
     pkgconfig_files
   end
+
+  def libtool_files
+    libtool_files = []
+
+    # find .la files, which are stored in lib/
+    la_dir = self/'lib'
+    la_dir.find do |pn|
+      next if pn.symlink? or pn.directory? or pn.extname.to_s != '.la'
+      libtool_files << pn
+    end
+    libtool_files
+  end
 end