https://bugs.gentoo.org/950573
https://github.com/google/benchmark/pull/1942

From d124c771fe507a8eb5bb37697f8b36a7fde19e27 Mon Sep 17 00:00:00 2001
From: Alfred Wingate <parona@protonmail.com>
Date: Wed, 5 Mar 2025 00:16:54 +0200
Subject: [PATCH] Install FindPFM.cmake for bencmarkConfig.cmake

There is no upstream PFM cmake package config file to use, so this has
to be installed for the benchmark cmake package config file to work.

Bug: https://bugs.gentoo.org/950573
See-Also: c2146397ac69e6589a50f6b4fc6a7355669caed5
Signed-off-by: Alfred Wingate <parona@protonmail.com>
--- a/cmake/Config.cmake.in
+++ b/cmake/Config.cmake.in
@@ -5,6 +5,7 @@ include (CMakeFindDependencyMacro)
 find_dependency (Threads)
 
 if (@BENCHMARK_ENABLE_LIBPFM@)
+    list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}")
     find_dependency (PFM)
 endif()
 
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -39,6 +39,9 @@ set_property(
 if (PFM_FOUND)
   target_link_libraries(benchmark PRIVATE PFM::libpfm)
   target_compile_definitions(benchmark PRIVATE -DHAVE_LIBPFM)
+  install(
+      FILES "${PROJECT_SOURCE_DIR}/cmake/Modules/FindPFM.cmake"
+      DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}")
 endif()
 
 # pthread affinity, if available