From f12085111242f55ea83e5b7be7ca785083cc0b11 Mon Sep 17 00:00:00 2001
From: Ajinkya Dahale <AjinkyaDahale@users.noreply.github.com>
Date: Tue, 6 Dec 2022 13:46:34 -0500
Subject: [PATCH] (Attempt to) fix compile issue in Raytracing
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Currently in Manjaro/Arch/Linux there's this issue:
```
/.../src/Mod/Raytracing/App/LuxProject.cpp: In member function ‘virtual App::DocumentObjectExecReturn* Raytracing::LuxProject::execute()’:
/.../src/Mod/Raytracing/App/LuxProject.cpp:85:20: error: variable ‘std::ifstream file’ has initializer but incomplete type
   85 |     ifstream file (fi.filePath().c_str());
      |                    ^~
/.../src/Mod/Raytracing/App/LuxProject.cpp:89:20: error: variable ‘std::ofstream ofile’ has initializer but incomplete type
   89 |     ofstream ofile(tempName.c_str());
      |                    ^~~~~~~~
```

See https://stackoverflow.com/questions/50355130/variable-stdofstream-outfile-has-initializer-but-incomplete-type.

Also edit `Precompiled.h` as compile fix
---
 src/Mod/Raytracing/App/LuxProject.cpp | 1 +
 src/Mod/Raytracing/App/PreCompiled.h  | 1 +
 2 files changed, 2 insertions(+)

diff --git a/src/Mod/Raytracing/App/LuxProject.cpp b/src/Mod/Raytracing/App/LuxProject.cpp
index 7cbaa85440..19bf837c7b 100644
--- a/src/Mod/Raytracing/App/LuxProject.cpp
+++ b/src/Mod/Raytracing/App/LuxProject.cpp
@@ -24,6 +24,7 @@
 
 #ifndef _PreComp_
 # include <Standard.hxx>
+# include <fstream>
 # include <iosfwd>
 # include <string>
 # include <vector>
diff --git a/src/Mod/Raytracing/App/PreCompiled.h b/src/Mod/Raytracing/App/PreCompiled.h
index db9a8d0e17..ab36095898 100644
--- a/src/Mod/Raytracing/App/PreCompiled.h
+++ b/src/Mod/Raytracing/App/PreCompiled.h
@@ -28,6 +28,7 @@
 #ifdef _PreComp_
 
 // STL
+#include <fstream>
 #include <iosfwd>
 #include <sstream>
 #include <vector>