From 2640bf1e19bd5b89924dec3ad8ea8f25e7e404c4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Markus=20M=C3=BCtzel?= <markus.muetzel@gmx.de>
Date: Mon, 6 Nov 2023 19:30:33 +0100
Subject: [PATCH] CI (Alpine): Use reference BLAS and LAPACK.

Some SuiteSparse libraries rely heavily on OpenMP. But the version of
OpenBLAS that is distributed by Alpine Linux is built without OpenMP.
This could lead to deadlocks (and OpenBLAS is very verbose about that
risk):
> OpenBLAS Warning : Detect OpenMP Loop and this application may hang. Please rebuild the library with USE_OPENMP=1 option.

Use the reference implementations of the BLAS and LAPACK libraries
instead (which might be slower than OpenBLAS but safer on that
distribution).
---
 .github/workflows/build-arch-emu.yaml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/build-arch-emu.yaml b/.github/workflows/build-arch-emu.yaml
index cea8619fb6..79514a30e0 100644
--- a/.github/workflows/build-arch-emu.yaml
+++ b/.github/workflows/build-arch-emu.yaml
@@ -67,7 +67,7 @@ jobs:
             m4
             gmp-dev
             mpfr-dev
-            openblas-dev
+            lapack-dev
             valgrind
 
       - name: prepare ccache
@@ -117,7 +117,7 @@ jobs:
                   -DCMAKE_C_COMPILER_LAUNCHER="ccache" \
                   -DCMAKE_CXX_COMPILER_LAUNCHER="ccache" \
                   -DCMAKE_Fortran_COMPILER_LAUNCHER="ccache" \
-                  -DBLA_VENDOR="OpenBLAS" \
+                  -DBLA_VENDOR="Generic" \
                   -DCOMPACT=ON \
                   ..
             echo "::endgroup::"
@@ -167,7 +167,7 @@ jobs:
           printf "::group::\033[0;32m==>\033[0m Configuring example\n"
           cmake \
             -DCMAKE_PREFIX_PATH="${GITHUB_WORKSPACE}/lib/cmake" \
-            -DBLA_VENDOR="OpenBLAS" \
+            -DBLA_VENDOR="Generic" \
             ..
           echo "::endgroup::"
           printf "::group::\033[0;32m==>\033[0m Building example\n"