From 520eb40e693f9c3604cabae2e799acbb581da643 Mon Sep 17 00:00:00 2001
From: redradist <redradist@gmail.com>
Date: Wed, 19 Feb 2025 09:57:10 +0200
Subject: [PATCH] FindOpenCL: Fix version detection in presence of multiple
 versions

Previously our call to `check_symbol_exists` was passing an absolute
path to the `cl.h` header to be included.  However, this might not
include its other headers correctly.  We already set
`CMAKE_REQUIRED_INCLUDES` such that `CL/cl.h` can be included by
the check, so we do not need to include by absolute path.
---
 Modules/FindOpenCL.cmake | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Modules/FindOpenCL.cmake b/Modules/FindOpenCL.cmake
index 697b062266..f50c05ca8d 100644
--- a/Modules/FindOpenCL.cmake
+++ b/Modules/FindOpenCL.cmake
@@ -53,12 +53,12 @@ function(_FIND_OPENCL_VERSION)
     if(EXISTS ${OpenCL_INCLUDE_DIR}/Headers/cl.h)
       check_symbol_exists(
         CL_VERSION_${VERSION}
-        "${OpenCL_INCLUDE_DIR}/Headers/cl.h"
+        "Headers/cl.h"
         OPENCL_VERSION_${VERSION})
     else()
       check_symbol_exists(
         CL_VERSION_${VERSION}
-        "${OpenCL_INCLUDE_DIR}/CL/cl.h"
+        "CL/cl.h"
         OPENCL_VERSION_${VERSION})
     endif()