From 42442db78751ce8d7cb8113b925205b076a0695b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Petr=20P=C3=ADsa=C5=99?= <ppisar@redhat.com>
Date: Thu, 10 Jun 2021 12:43:49 +0200
Subject: [PATCH] Place temporary files into a writable location
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check_header() failed if called from a read-only location:

$ cd /
$ perl -e 'use Alien::SDL; Alien::SDL::check_header(q{SDL.h})'
[SDL.h] Testing header(s): Error in tempfile() using template aaXXXX.c: Could not create temp file aam5Xl.c: Permission denied at /usr/share/perl5/vendor_perl/Alien/SDL.pm line 243.

Using a temporary directory attempts to place the files into
a temporary location designated by a system. That location (e.g. /tmp)
is usually writable.

Signed-off-by: Petr Písař <ppisar@redhat.com>
---
 lib/Alien/SDL.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Alien/SDL.pm b/lib/Alien/SDL.pm
index 582ef27..b06976e 100644
--- a/lib/Alien/SDL.pm
+++ b/lib/Alien/SDL.pm
@@ -240,7 +240,7 @@ sub check_header {
   }
 
   my $cb = ExtUtils::CBuilder->new( quiet => 1, config => $config );
-  my ($fs, $src) = File::Temp::tempfile('aaXXXX', SUFFIX => '.c', UNLINK => 1);
+  my ($fs, $src) = File::Temp::tempfile('aaXXXX', SUFFIX => '.c', TMPDIR => 1, UNLINK => 1);
   my $inc = '';
   my $i = 0;
   foreach (@header) {
-- 
2.31.1