From 6dcb32a0c9554b1df583acd0c6b4aace91bf437a Mon Sep 17 00:00:00 2001
From: Levente Meszaros <levy@omnetpp.org>
Date: Mon, 25 Mar 2024 12:10:14 +0100
Subject: [PATCH] ExternalProcess: Fixed Windows compilation by adding a Linux
 OS guard condition.

---
 src/inet/common/ExternalProcess.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/inet/common/ExternalProcess.cc b/src/inet/common/ExternalProcess.cc
index 1f2877d8739..202ca57f4ba 100644
--- a/src/inet/common/ExternalProcess.cc
+++ b/src/inet/common/ExternalProcess.cc
@@ -77,6 +77,7 @@ bool ExternalProcess::notify(int fd)
 
 void ExternalProcess::startProcess()
 {
+#ifdef __linux__
     NetworkNamespaceContext context(par("namespace"));
     EV_DEBUG << "Starting process: " << command << std::endl;
     int stdout_pipe[2];
@@ -123,6 +124,9 @@ void ExternalProcess::startProcess()
         rtScheduler->addCallback(processStdout, this);
         rtScheduler->addCallback(processStderr, this);
     }
+#else
+        throw cRuntimeError("External processes are only supported on Linux");
+#endif
 }
 
 void ExternalProcess::stopProcess()