From 4c09f5e51af4fc5d064cd7462b89c0d455dfab2a Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Thu, 23 Nov 2023 00:04:18 +0100
Subject: Add method to setup LD_LIBRARY_PATH for grok.

---
 src/lib/util.cc | 25 +++++++++++++++++++++++++
 src/lib/util.h  |  3 +++
 2 files changed, 28 insertions(+)

diff --git a/src/lib/util.cc b/src/lib/util.cc
index 8cfdf0552..a25914a6c 100644
--- a/src/lib/util.cc
+++ b/src/lib/util.cc
@@ -1117,3 +1117,28 @@ word_wrap(string input, int columns)
 	return output;
 }
 
+
+
+#ifdef DCPOMATIC_GROK
+void
+setup_grok_library_path()
+{
+	static std::string old_path;
+	if (old_path.empty()) {
+		old_path = getenv("LD_LIRARY_PATH");
+	}
+	auto const grok = Config::instance()->grok();
+	if (!grok || grok->binary_location.empty()) {
+		setenv("LD_LIRARY_PATH", old_path.c_str(), 1);
+		return;
+	}
+
+	std::string new_path = old_path;
+	if (!new_path.empty()) {
+		new_path += ":";
+	}
+	new_path += grok->binary_location.string();
+
+	setenv("LD_LIBRARY_PATH", new_path.c_str(), 1);
+}
+#endif
diff --git a/src/lib/util.h b/src/lib/util.h
index 2d65b9214..b85cf0a33 100644
--- a/src/lib/util.h
+++ b/src/lib/util.h
@@ -98,6 +98,9 @@ extern std::string error_details(boost::system::error_code ec);
 extern bool contains_assetmap(boost::filesystem::path dir);
 extern std::string word_wrap(std::string input, int columns);
 extern void capture_ffmpeg_logs();
+#ifdef DCPOMATIC_GROK
+extern void setup_grok_library_path();
+#endif
 
 
 template <class T>
-- 
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