From 0079a1d5bca57f9625c56ad50b815b3c2c070d93 Mon Sep 17 00:00:00 2001
From: souravdas142 <souravdas142@gmail.com>
Date: Sat, 3 Sep 2022 12:49:11 +0530
Subject: [PATCH] filter-chain: use right lv2 include path for some older
 distros also

    3f6fe392 uses headers from /usr/include/lv2/atom/. but this leads compilation
    failure for some distros (i.e. ubuntu 18.04) as they have some
    different location for these headers. One can find these headers
    at /usr/include/lv2/lv2plug.in/ns/ext/atom/ (for ubuntu 18.04)
    instead /usr/include/lv2/atom/. So guard them with __has_include.
    and mention other possibilities.

    Fixes #2670
---
 src/modules/module-filter-chain/lv2_plugin.c | 26 ++++++++++++++++----
 1 file changed, 21 insertions(+), 5 deletions(-)

diff --git a/src/modules/module-filter-chain/lv2_plugin.c b/src/modules/module-filter-chain/lv2_plugin.c
index a66c81260..fc4f274bc 100644
--- a/src/modules/module-filter-chain/lv2_plugin.c
+++ b/src/modules/module-filter-chain/lv2_plugin.c
@@ -35,11 +35,27 @@
 #include <pipewire/array.h>
 
 #include <lilv/lilv.h>
-#include <lv2/atom/atom.h>
-#include <lv2/buf-size/buf-size.h>
-#include <lv2/worker/worker.h>
-#include <lv2/options/options.h>
-#include <lv2/parameters/parameters.h>
+
+#if defined __has_include
+#	if __has_include (<lv2/atom/atom.h>)
+
+		#include <lv2/atom/atom.h>
+		#include <lv2/buf-size/buf-size.h>
+		#include <lv2/worker/worker.h>
+		#include <lv2/options/options.h>
+		#include <lv2/parameters/parameters.h>
+
+#	else
+
+		#include <lv2/lv2plug.in/ns/ext/atom/atom.h>
+		#include <lv2/lv2plug.in/ns/ext/buf-size/buf-size.h>
+		#include <lv2/lv2plug.in/ns/ext/worker/worker.h>
+		#include <lv2/lv2plug.in/ns/ext/options/options.h>
+		#include <lv2/lv2plug.in/ns/ext/parameters/parameters.h>
+
+#	endif
+
+#endif
 
 #include "plugin.h"