From 2c5a763dc1c6767de2ddf096d769dbaef3a9afc3 Mon Sep 17 00:00:00 2001
From: Kai Blaschke <kai.blaschke@gdata.de>
Date: Wed, 17 Jan 2024 17:08:15 +0100
Subject: [PATCH] Pass optional dependency on Boost::filesystem to downstream
 projects.

---
 src/playlist/FilesystemSupport.cmake          | 2 ++
 src/playlist/projectM4PlaylistConfig.cmake.in | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/src/playlist/FilesystemSupport.cmake b/src/playlist/FilesystemSupport.cmake
index 48e580566..935acef0c 100644
--- a/src/playlist/FilesystemSupport.cmake
+++ b/src/playlist/FilesystemSupport.cmake
@@ -46,4 +46,6 @@ else()
             PUBLIC
             Boost::filesystem
             )
+
+    set(ENABLE_BOOST_FILESYSTEM ON CACHE BOOL "Compiler does not support std::filesystem, reverting to boost::filesystem." FORCE)
 endif()
diff --git a/src/playlist/projectM4PlaylistConfig.cmake.in b/src/playlist/projectM4PlaylistConfig.cmake.in
index ebfcfcfd2..3b3f3dc7b 100644
--- a/src/playlist/projectM4PlaylistConfig.cmake.in
+++ b/src/playlist/projectM4PlaylistConfig.cmake.in
@@ -2,4 +2,8 @@ set(projectM4Playlist_VERSION @PROJECT_VERSION@)
 
 @PACKAGE_INIT@
 
+if("@ENABLE_BOOST_FILESYSTEM@") # ENABLE_BOOST_FILESYSTEM
+    find_dependency(Boost COMPONENTS Filesystem)
+endif()
+
 include("${CMAKE_CURRENT_LIST_DIR}/projectM4PlaylistTargets.cmake")