From 332b17662dc56488970d1ae1d78b9851f8332e52 Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Sat, 14 Mar 2026 22:21:50 +0100
Subject: Allow building of disk writer with boost process version 2.

---
 src/lib/grok/util.cc | 36 ++++++++++++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

(limited to 'src/lib')

diff --git a/src/lib/grok/util.cc b/src/lib/grok/util.cc
index 3d5caeba1..33847e8bb 100644
--- a/src/lib/grok/util.cc
+++ b/src/lib/grok/util.cc
@@ -22,6 +22,7 @@
 #include "util.h"
 #include "../config.h"
 #include "../dcpomatic_log.h"
+#include <boost/asio.hpp>
 #include <boost/process.hpp>
 #include <future>
 
@@ -33,9 +34,11 @@ using std::vector;
 vector<string>
 get_gpu_names()
 {
-	namespace bp = boost::process;
+	auto const binary = Config::instance()->grok().binary_location / "gpu_lister";
+
+#ifdef DCPOMATIC_BOOST_PROCESS_V1
 
-	auto binary = Config::instance()->grok().binary_location / "gpu_lister";
+	namespace bp = boost::process;
 
 	bp::ipstream stream;
 
@@ -55,6 +58,35 @@ get_gpu_names()
 		LOG_ERROR("Could not fetch GPU names: {}", e.what());
 		return {};
 	}
+
+#else
+
+	namespace bp = boost::process::v2;
+
+	try {
+    boost::asio::io_context context;
+    boost::asio::readable_pipe out{context};
+    bp::process child(context, binary, {}, bp::process_stdio{{}, out, {}});
+
+    string output;
+    boost::system::error_code ec;
+    while (child.running()) {
+      string block;
+      boost::asio::read(out, boost::asio::dynamic_buffer(block), ec);
+      output += block;
+      if (ec && ec == boost::asio::error::eof) {
+        break;
+      }
+    }
+
+    vector<string> lines;
+    boost::algorithm::split(lines, output, boost::is_any_of("\n"));
+    return lines;
+  } catch (std::exception& e) {
+		LOG_ERROR("Could not fetch GPU names: {}", e.what());
+		return {};
+  }
+#endif
 }
 
 
-- 
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