From 9a65514249524dbce4f886c345dc75b5785bf6cd Mon Sep 17 00:00:00 2001
From: Sebastian Ehlert <28669218+awvwgk@users.noreply.github.com>
Date: Wed, 25 Mar 2026 13:54:08 +0100
Subject: [PATCH] Allow finding LAPACK++ and BLAS++

For LAPACK++ and BLAS++ only the availability of the lapackpp and blaspp target is checked. This patch adds the possibility to find the package as part of the `ga-linalg.cmake` routine to discover the targets from a CMake config file or similar.
---
 cmake/ga-linalg.cmake | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cmake/ga-linalg.cmake b/cmake/ga-linalg.cmake
index 7ad1ecb1d..14e700284 100644
--- a/cmake/ga-linalg.cmake
+++ b/cmake/ga-linalg.cmake
@@ -178,6 +178,7 @@ if (ENABLE_BLAS)
     endif()
     include(FetchContent)
     set( gpu_backend "none" CACHE STRING "GPU backend to use" FORCE)
+    find_package(blaspp QUIET)
     if(NOT TARGET blaspp)
       if(ENABLE_OFFLINE_BUILD)
       FetchContent_Declare(
@@ -195,6 +196,7 @@ if (ENABLE_BLAS)
       FetchContent_MakeAvailable( blaspp )
     endif()
 
+    find_package(lapackpp QUIET)
     if(NOT TARGET lapackpp)
     if(ENABLE_OFFLINE_BUILD)
       FetchContent_Declare(