From 93f68fe2d4fdc41ea9932d6e8e0174aecc34e8ca Mon Sep 17 00:00:00 2001
From: Niels Grewe <niels.grewe@halbordnung.de>
Date: Mon, 1 Sep 2025 23:37:25 +0200
Subject: [PATCH] docs: Add a hint to CMake error message if the required
 symbol was not found in libBlocksRuntime

---
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7be34400..dddaae96 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -249,7 +249,7 @@ else ()
 		if (HAVE_BLOCK_USE_RR2)
 			add_definitions(-DHAVE_BLOCK_USE_RR2)
 		else ()
-			message(FATAL_ERROR "libBlocksRuntime does not contain _Block_use_RR2(). Enable EMBEDDED_BLOCKS_RUNTIME to use the built-in blocks runtime.")
+			message(FATAL_ERROR "_Block_use_RR2() could not be found in libBlocksRuntime. Did you install libdispatch with INSTALL_PRIVATE_HEADERS=ON? Alternatively, enable EMBEDDED_BLOCKS_RUNTIME to use the built-in blocks runtime.")
 		endif ()
 		unset(CMAKE_REQUIRED_LIBRARIES)
 	else ()