$NetBSD: patch-ocl-icd.pc.in,v 1.2 2024/04/22 10:43:30 adam Exp $

Link with libpthread in order to unbreak pocl on NetBSD.

--- ocl-icd.pc.in.orig	2023-06-02 21:36:20.000000000 +0000
+++ ocl-icd.pc.in
@@ -7,5 +7,5 @@ Name: ocl-icd
 Description: Open Computing Language generic Installable Client Driver support
 Requires: OpenCL-Headers
 Version: @VERSION@
-Libs: -L${libdir}
+Libs: -L${libdir} -pthread
 Cflags: -I${includedir}