From 0e1df88f7ebb97a807a4d3d3a3d8d49b6e15c4fd Mon Sep 17 00:00:00 2001
From: ringabout <43030857+ringabout@users.noreply.github.com>
Date: Tue, 1 Oct 2024 14:11:07 +0800
Subject: [PATCH] check fileExists for outputFile (#24211)

ref
https://github.com/nim-lang/Nim/commit/a5f46a72ba7ce074c2b32f25eaac35bba6dbe744#commitcomment-147402726
---
 compiler/extccomp.nim | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/compiler/extccomp.nim b/compiler/extccomp.nim
index e66746fbbc..ce25da7738 100644
--- a/compiler/extccomp.nim
+++ b/compiler/extccomp.nim
@@ -1048,7 +1048,8 @@ proc writeJsonBuildInstructions*(conf: ConfigRef; deps: StringTableRef) =
           bcache.depfiles.add (path, $secureHashFile(path))
 
     bcache.nimexe = hashNimExe()
-    bcache.outputLastModificationTime = $getLastModificationTime(bcache.outputFile)
+    if fileExists(bcache.outputFile):
+      bcache.outputLastModificationTime = $getLastModificationTime(bcache.outputFile)
   conf.jsonBuildFile = conf.jsonBuildInstructionsFile
   conf.jsonBuildFile.string.writeFile(bcache.toJson.pretty)