From d4396a85bf14d3364a10f8d57a64b6aa80b9949d Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Mon, 29 Apr 2024 11:32:47 +0200
Subject: [PATCH] Fix binary proxies having an absolute path to vendor dir when
 project dir is a symlink, fixes #11947

---
 src/Composer/Installer/BinaryInstaller.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/Composer/Installer/BinaryInstaller.php b/src/Composer/Installer/BinaryInstaller.php
index ba50fe17f..9e3123ff8 100644
--- a/src/Composer/Installer/BinaryInstaller.php
+++ b/src/Composer/Installer/BinaryInstaller.php
@@ -225,7 +225,12 @@ class BinaryInstaller
             $phpunitHack1 = $phpunitHack2 = '';
             // Don't expose autoload path when vendor dir was not set in custom installers
             if ($this->vendorDir) {
-                $globalsCode .= '$GLOBALS[\'_composer_autoload_path\'] = ' . $this->filesystem->findShortestPathCode($link, $this->vendorDir . '/autoload.php', false, true).";\n";
+                // ensure comparisons work accurately if the CWD is a symlink, as $link is realpath'd already
+                $vendorDirReal = realpath($this->vendorDir);
+                if ($vendorDirReal === false) {
+                    $vendorDirReal = $this->vendorDir;
+                }
+                $globalsCode .= '$GLOBALS[\'_composer_autoload_path\'] = ' . $this->filesystem->findShortestPathCode($link, $vendorDirReal . '/autoload.php', false, true).";\n";
             }
             // Add workaround for PHPUnit process isolation
             if ($this->filesystem->normalizePath($bin) === $this->filesystem->normalizePath($this->vendorDir.'/phpunit/phpunit/phpunit')) {