From 57423540f01def019544183d79e2611bb3b6411b Mon Sep 17 00:00:00 2001
From: mmm545 <64874108+mmm545@users.noreply.github.com>
Date: Mon, 15 Feb 2021 22:53:44 +0300
Subject: [PATCH] BUILDING.md: Document server-phar.php's compression bug
 (#4037)

This bug is not fixable on PM's side because the fault lies with php-src. It was fixed recently in https://github.com/php/php-src/commit/1bb2a4f91cfde36ba343184f3d88189e646cc363.
---
 BUILDING.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/BUILDING.md b/BUILDING.md
index f84b83e35..fa2295f20 100644
--- a/BUILDING.md
+++ b/BUILDING.md
@@ -34,5 +34,11 @@ Run `composer make-server` using your preferred PHP binary. It'll drop a `Pocket
 
 You can also use the `--out` option to change the output filename.
 
+There is a bug in PHP that might cause an error which looks like this:
+```
+Fatal error: Uncaught BadMethodCallException: unable to create temporary file in PocketMine-MP/build/server-phar.php:119
+```
+You can work around it by setting `ulimit -n` to some bigger number, e.g. `8192`, or by updating your PHP version to at least 7.4.16 or 8.0.3.
+
 ## Running PocketMine-MP from source code
 Run `src/pocketmine/PocketMine.php` using your preferred PHP binary.