From d3c495e8b99a385231720358f5f4464866cd3ea8 Mon Sep 17 00:00:00 2001
From: Christian Groessler <chris@groessler.org>
Date: Tue, 16 Feb 2021 22:19:34 +0100
Subject: [PATCH] ar65: fix parallel builds by using a per-process temp file

---
 src/ar65/library.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/ar65/library.c b/src/ar65/library.c
index 08fdeb563..fd761d04e 100644
--- a/src/ar65/library.c
+++ b/src/ar65/library.c
@@ -249,9 +249,10 @@ void LibOpen (const char* Name, int MustExist, int NeedTemp)
     if (NeedTemp) {
 
         /* Create the temporary library name */
-        NewLibName = xmalloc (strlen (Name) + strlen (".temp") + 1);
+        NewLibName = xmalloc (strlen (Name) + strlen (".temp-") + 8 + 1);
         strcpy (NewLibName, Name);
-        strcat (NewLibName, ".temp");
+        strcat (NewLibName, ".temp-");
+        sprintf (NewLibName + strlen (NewLibName), "%X", (unsigned int)getpid());
 
         /* Create the temporary library */
         NewLib = fopen (NewLibName, "w+b");